Volume 2025 Volume 2024 Volume 2023 Volume 2022 Volume 2021 Volume 2020 Volume 2019 Volume 2018 Volume 2017 Volume 2016 Volume 2015 Volume 2014
Vol. 6, Issue 12, PP. 570-575, December 2019
The escalation in the level of municipal solid waste generation by mankind is the index of using natural resources in an unsustainable and ineffective manner while that pattern has continued and paved its way to the exhaustion of the natural resources and environmental changes. Pakistan is not confronted solely by the increase in population growth like the other developing countries but it has also an escalation in its Municipal Solid waste (MSW) generation. The concerned municipal corporation authorities are incapable to cope up with due to a boost in the increased urbanization. Energy from waste being renewable energy can generate a good enough amount of electricity; reduces greenhouse gas emissions, solid waste minimization as well as it’s a good source for a circular economy. RETScreen Expert Software support tool has been used in this study to determine the prefeasibility analysis of electricity generation from Peshawar city municipal solid wastes suggesting power plant having capacity assumed to be of 10 MW using city mix municipal solid waste it’s being analyzed that for a 10 MW system which can export 74,816 MWh of electricity to the grid and the revenue generation from that will be 11,970,503 CAD. While the GHG emission reduction would be 32,598 tons of CO2 having a simple payback period of 7.7 years with a cost to benefit ratio of 1.5 hence from the result its recommended to have a waste to energy facility for the Peshawar city municipal solid waste.
[1] A. Kumar and S. R. Samadder, “A review on technological options of waste to energy for effective management of municipal solid waste,” Waste Manag., vol. 69, pp. 407–422, 2017.
[2] P. Hoornweg, Daniel, Bhada-Tata, “What a waste - a global review on solid waste,” vol. 1, no. 5, p. 116, 2012.
[3] D. Moya, C. Aldás, D. Jaramillo, E. Játiva, and P. Kaparaju, “ScienceDirect ScienceDirect Waste-To-Energy Technologies : an opportunity of energy recovery from Municipal Solid Waste, using Quito - Ecuador as case study,” Energy Procedia, vol. 134, pp. 327–336, 2017.
[4] S. Aatif and M. Naeem Arbab, “Capacity Estimation of Power Generation from MSW of Peshawar City,” Int. J. Comput. Appl., vol. 111, no. 15, pp. 40–45, 2015.
[5] M. J. S. Zuberi and S. F. Ali, “Greenhouse effect reduction by recovering energy from waste landfills in Pakistan,” Renew. Sustain. Energy Rev., vol. 44, pp. 117–131, 2015.
[6] C. E. Palacio et al., “Municipal Solid Waste Management and Energy Recovery José.”
[7] D. Moya, C. Aldás, G. López, and P. Kaparaju, “Municipal solid waste as a valuable renewable energy resource: A worldwide opportunity of energy recovery by using Waste-To-Energy Technologies,” in Energy Procedia, 2017.
[8] International Renewable Energy Agency (IRENA), 2016. Renewable EnergyStatistics.
[9] (accessed 21.03.2017).
[10] World Energy Council, “World Energy Resources 2016,” World Energy Counc. 2016, pp. 6–46, 2016.
[11] G. Ali and N. A. Molla, “Selection of Appropriate Technology for Solid Waste Management: A Case of Thammasat Hospital, Thailand. Himalayan Adaptation, Water and Resilience (HI-AWARE) Research View project Climate change policies in Asia View project,” no. April, 2010.
[12] S. T. Tan, W. S. Ho, H. Hashim, C. T. Lee, M. R. Taib, and C. S. Ho, “Energy, economic and environmental (3E) analysis of waste-to-energy (WTE) strategies for municipal solid waste (MSW) management in Malaysia,” Energy Convers. Manag., vol. 102, pp. 111–120, 2015.
[13] K. A. Kalyani and K. K. Pandey, “Waste to energy status in India: A short review,” Renew. Sustain. Energy Rev., vol. 31, pp. 113–120, 2014.
[14] R. Intharathirat and P. Abdul Salam, “Valorization of MSW-to-Energy in Thailand: Status, Challenges and Prospects,” Waste and Biomass Valorization, vol. 7, no. 1, pp. 31–57, 2016.
[15] D. Moya, J. Paredes, and P. Kaparaju, “Technical , financial , economic and environmental pre-feasibility study of geothermal power plants by RETScreen – Ecuador ’ s case study,” Renew. Sustain. Energy Rev., vol. 92, no. December 2017, pp. 628–637, 2018.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 534-542, December 2019
Due to the fast increase in energy of modern human being the desire for the clean renewable energy is increasing day by day. Electrical power generation from wind is promising source. But due to the large combination of wind forms in electrical power grid the stability and security are key issues for the electrical power engineers. Amongst the required grid codes for the power utilities LVRT is very important. According to LVRT the wind form should act as conventional power plant and connect to grid for some particular time to provide stability to grid at normal and fault time. In this paper we have developed a LVRT strategy for control of active, reactive power and DC link voltage of the variable speed wind turbine. The test bed system is 9 MW DFIG wind turbine attached to 120KV grid system by 30KM long 25 KV transmission line. The modelling and simulation is done by using MATLAB/SIMULINK. The control system is implemented by using PI controller using vector or field oriented control. The LVRT strategies implemented on test bed model are (STFCL), DC chopper, Rotor Crowbar and Hybrid strategy with using RSC control, GSC control and pitch control mechanisms. The hybrid strategy provide excellent solution for LVRT of DFIG wind turbine by controlling power (active and reactive) and voltage of DC link. The results of hybrid strategy during symmetrical fault is best and well suited to the LVRT requirements as compared of STFCL, DC chopper and crowbar.
[1] REN21. (2019). Renewables Global Status Report- REN21. [Online] Available at: http://www.ren21.net/status-of-renewables/global-status-report
[2] W. Qiao and R. G. Harley, “Grid Connection Requirements and Solutions for DFIG Wind Turbines,” 2008 IEEE Energy 2030 Conference, 2008.
[3] FERC - Interconnection of Wind Energy, 18 CFR Part 35, Docket No. RM05-4-001; Order No. 661-A December 12, 2005.
[4] B. B. Ambati, P. Kanjiya, and V. Khadkikar, “A Low Component Count Series Voltage Compensation Scheme for DFIG WTs to Enhance Fault Ride-Through Capability,” IEEE Transactions on Energy Conversion, vol. 30, no. 1, pp. 208–217, 2015
[5] D. A and S. A “Comparison of fault ride-through strategies for wind turbines with DFIM generators”. IEEE European conference on power electronics and applications, New York ,2005, Dresden, pp. 1–8.:
[6] J. Morren and S.W.H. de Haan, “Ridet hrough of wind turbines with doubly-fed induction generator during a voltage dip,” IEEE Trans.Energy Convers., vol. 20, no. 2, pp. 435 – 441, June 2005.
[7] J. Lopez, P. Sanchis, X. Roboam, and L. Marroyo, “Dynamic behaviour of the doubly fed induction generator during three-phase voltage dips,” IEEE Trans. Energy Convers., vol. 22, no. 3, pp. 709 – 717, Sept. 2007.
[8] X. Kong, Z. Zhang, X. Yin and M. Wen, “Study of fault current characteristics of the DFIG considering dynamic response of the RSC,” IEEE Trans. Energy Convers., vol. 29, no. 2, pp. 278-287, June. 2014
[9] W. Chen, F. Blaabjerg, N. Zhu, M. Chen and D. Xu, “Doubly fed induction generator wind turbine system subject to symmetrical recurring grid faults”, IEEE Trans. Power Electron., early access, 2015.
[10] S. Seman, J. Niiranen, S. Kanerva, A. Arkkio, and J. Saitz, “Performance study of a doubly fed wind-power induction generator under network disturbances,” IEEE Trans. Energy Convers., vol. 21, no. 4, pp. 883 – 890, December 2006.
[11] I. Erlich, H. Wrede, and C. Feltes, “Dynamic behavior of DFIG-based wind turbines during grid faults,” in Proc. 38th IEEE Power Electronics Specialists Conference, Orlando, FL, USA, June 17-21, 2007, pp. 1195-1200.
[12] A. Hansen, G. Michalke, P. Sørensen, F. Iov, and T. Lund, “Coordinated voltage control of DFIG wind turbines in uninterrupted operation during grid faults,” Wind & Solar Energy Journal, vol. 10, no. 1, Aug. 2006.
[13] P. Kumar and A. K. Singh.” Grid Codes goals and challenges” Electrical Engineering Department, Motilal Nehru National Institute of Technology Allahabad, Uttar Pradesh 211004, India e-mail: pradeepkumar@ieee.orgA. K. Singh e-mail: asheesh@mnnit.ac.in
[14] K. E. Okedu, S. M. Muyeen, R. Takahashi, and J. Tamura, “Application of SDBR with DFIG to augment wind farm fault ride through,” 2011 International Conference on Electrical Machines and Systems, 2011.
[15] R. Sarrias, L. M. Fernández, C. A. García, and F. Jurado, “Coordinate operation of power sources in a doubly-fed induction generator wind turbine/battery hybrid power system,” Journal of Power Sources, vol. 205, pp. 354–366, 2012.
[16] F. Lima, A. Luna, P. Rodriguez, E. Watanabe, and F. Blaabjerg, “Rotor Voltage Dynamics in the Doubly Fed Induction Generator During Grid Faults,” IEEE Transactions on Power Electronics, vol. 25, no. 1, pp. 118–130, 2010.
[17] S. Xiao, G. Yang, H. Zhou, and H. Geng, “Analysis of the control limit for rotor-side converter of doubly fed induction generator-based wind energy conversion system under various voltage dips,” IET Renewable Power Generation, vol. 7, no. 1, pp. 71–81, 2013.
[18] W. Guo, L. Xiao, S. Dai, Y. Li, X. Xu, W. Zhou, and L. Li, “LVRT Capability Enhancement of DFIG With Switch-Type Fault Current Limiter,” IEEE Transactions on Industrial Electronics, vol. 62, no. 1, pp. 332–342, 2015.
[19] K. Young, V. Utkin, and U. Ozguner, “A control engineers guide to sliding mode control,” Proceedings. 1996 IEEE International Workshop on Variable Structure Systems. - VSS96 -.
[20] Mohan, Ned. Advanced electric drives: analysis, control, and modeling using MATLAB/Simulink. John wiley & sons, 2014.
[21] Niiranen, Jouko. "Voltage dip ride through of a doubly-fed generator equipped with an active crowbar." In Nordic wind power conference, vol. 1. Chalmers University of Technology Sweden, 2004.
[22] J. K. Huusom, N. K. Poulsen, S. B. Jørgensen, and J. B. Jørgensen, “ARX-Model based Model Predictive Control with Offset-Free Tracking,” Computer Aided Chemical Engineering 20th European Symposium on Computer Aided Process Engineering, pp. 601–606, 2010.
[23] J. K. Huusom, N. K. Poulsen, S. B. Jørgensen, and J. B. Jørgensen, “Tuning SISO offset-free Model Predictive Control based on ARX models,” Journal of Process Control, vol. 22, no. 10, pp. 1997–2007, 2012.
[24] R. Chudamani, C. Ramalingam, and K. Vasudevan, “Non-linear least-squares-based harmonic estimation algorithm for a shunt active power filter,” IET Power Electronics, vol. 2, no. 2, pp. 134–146, 2009.
[25] S. Hu, X. Lin, Y. Kang, and X. Zou, “An Improved Low-Voltage Ride-Through Control Strategy of Doubly Fed Induction Generator During Grid Faults,” IEEE Transactions on Power Electronics, vol. 26, no. 12, pp. 3653–3665, 2011.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 564-569, December 2019
From the past couple of years, the high-power conversion efficiency (PCE) of >25% and low-cost fabrication of single-junction perovskite photovoltaic cells have gained great attention from researchers. The bandgap tunability of these solar cells makes them an attractive and ideal candidate for tandem solar cell applications. The PCEs above than the single-junction solar cells theoretical Shockley-Queisser (SQ) radiative efficiency limit (31%-33%) can be achieved by harvesting a wide fraction of solar spectrum using multi-junction solar cells. In perovskite tandem (double-junction) solar cells, a wide-bandgap perovskite top cell is combined with either narrow-bandgap bottom cells of dissimilar materials like silicon (Si) and copper indium gallium selenide (CIGS) or with low bandgap perovskite solar cell. In this work, we have simulated perovskite/Si (PVK/Si), perovskite/CIGS (PVK/CIGS) and perovskite/perovskite (PVK/PVK) tandem solar cells and estimated 28.73%, 20.31% and 26.06% PCEs. The highest conversion efficiency is shown by PVK/Si tandem cells among others because of the suitable bandgap for tandem applications. Our work will guide the researchers for obtaining ultra-high conversion efficiency solar cells.
[1] J.-P. Correa-Baena et al., “Promises and challenges of perovskite solar cells,” Science (80-. )., vol. 358, no. 6364, pp. 739–744, 2017.
[2] T. Leijtens, K. A. Bush, R. Prasanna, and M. D. McGehee, “Opportunities and challenges for tandem solar cells using metal halide perovskite semiconductors,” Nat. Energy, vol. 3, no. 10, p. 828, 2018.
[3] G. E. Eperon, M. T. Hörantner, and H. J. Snaith, “Metal halide perovskite tandem and multiple-junction photovoltaics,” Nat. Rev. Chem., vol. 1, no. 12, p. 95, 2017.
[4] “Best Research-Cell Efficiencies, available online. [Accessed: 20 October 2019], 2019.”
[5] W. Shockley and H. J. Queisser, “Detailed balance limit of efficiency of p‐n junction solar cells,” J. Appl. Phys., vol. 32, no. 3, pp. 510–519, 1961.
[6] A. De Vos, “Detailed balance limit of the efficiency of tandem solar cells,” J. Phys. D. Appl. Phys., vol. 13, no. 5, p. 839, 1980.
[7] P. Löper et al., “Organic-inorganic halide perovskite/crystalline silicon four-terminal tandem solar cells,” Phys. Chem. Chem. Phys., vol. 17, no. 3, pp. 1619–1629, 2015.
[8] C. D. Bailie et al., “Semi-transparent perovskite solar cells for tandems with silicon and CIGS,” Energy Environ. Sci., vol. 8, no. 3, pp. 956–963, 2015.
[9] J. Zheng et al., “21.8% efficient monolithic perovskite/homo-junction-silicon tandem solar cell on 16 cm2,” ACS Energy Lett., vol. 3, no. 9, pp. 2299–2300, 2018.
[10] “Imec Perovskite/CIGS tandem cell with Record Efficiency of 24.6 percent Paves the Way for Flexible Solar Cells and High-Efficiency Building-Integrated PV 2018.[Online]. Available:(https://www.imec-int.com/en/articles/perovskite-cigs-tandem- cell-with-rec,” 2018.
[11] M. Jost et al., “21.6%-Efficient Monolithic Perovskite/Cu (In, Ga) Se2 Tandem Solar Cells with Thin Conformal Hole Transport Layers for Integration on Rough Bottom Cell Surfaces,” ACS Energy Lett., vol. 4, no. 2, pp. 583–590, 2019.
[12] D. Zhao et al., “Four-terminal all-perovskite tandem solar cells achieving power conversion efficiencies exceeding 23%,” ACS Energy Lett., vol. 3, no. 2, pp. 305–306, 2018.
[13] S. Albrecht et al., “Monolithic perovskite/silicon-heterojunction tandem solar cells processed at low temperature,” Energy Environ. Sci., vol. 9, no. 1, pp. 81–88, 2016.
[14] “"PVlighthouse,.” [Online]. Available: https://www.pvlighthouse.com.au/sunsolve.” .
[15] P. D. Paulson, R. W. Birkmire, and W. N. Shafarman, “Optical characterization of CuIn 1− x Ga x Se 2 alloy thin films by spectroscopic ellipsometry,” J. Appl. Phys., vol. 94, no. 2, pp. 879–888, 2003.
[16] A. Rajagopal et al., “Highly efficient perovskite–perovskite tandem solar cells reaching 80% of the theoretical limit in photovoltage,” Adv. Mater., vol. 29, no. 34, p. 1702140, 2017.
[17] [17] Z. Song, C. Chen, C. Li, R. A. Awni, D. Zhao, and Y. Yan, “Wide-bandgap, low-bandgap, and tandem perovskite solar cells,” Semicond. Sci. Technol., vol. 34, no. 9, p. 93001, 2019.
[18] J. Y. Zhengshan and Z. C. Holman, “Predicting the Efficiency of the Silicon Bottom Cell in a Two-Terminal Tandem Solar Cell,” in 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC), 2017, pp. 3250–3253.
[19] D. Zhao et al., “Efficient two-terminal all-perovskite tandem solar cells enabled by high-quality low-bandgap absorber layers,” Nat. Energy, vol. 3, no. 12, p. 1093, 2018.
[20] M. T. Hörantner et al., “The potential of multijunction perovskite solar cells,” ACS Energy Lett., vol. 2, no. 10, pp. 2506–2513, 2017.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 547-555, December 2019
In ad hoc network the unidirectional links and hidden node appear very frequently. There are few techniques that are used to avoid both unidirectional links and hidden nodes. Request to send/Clear to send (RTS/CTS) technique is used to avoid hidden link scenario and hello, blacklisting and reverse path search are used to avoid unidirectional links. In our research we opted for Dynamic source routing (DSR) which basically considers every route to be bidirectional, but as nodes moves frequently in ad hoc network these two problems occur. In the first part of the paper, we have implemented (RTS/CTS) and blacklisting techniques to avoid hidden links and unidirectional links to look into the improvement in the Dynamic source routing (DSR) by calculating certain parameters such as, Throughput (packet delivery at sink), End-to-End Delay, Network load and Packet delivery ratio. Furthermore our thesis also look into the link failure recovery, as nodes are continuously moving while data transferring as well so the node can move away from each other in these cases so the link broke down between the source and destination nodes so to avoid this scenario We implemented a mechanism of route recovery to efficiently tackle this problem. The result shows that the improved Dynamic source routing (Improved DSR) has shown more stability and performs very good overall in every performance parameter.
[1] Samir R. Das Mahesh K. Marina, "Routing Performance in the Presence of Unidirectional Links in Multihop Wireless Networks," Proceedings of the 3rd ACM international symposium on Mobile ad hoc networking & computing, pp. 12-23, 2002.
[2] Zygmunt J. Haas, Benjamin P. Manvell Marc R. Pearlman, "Using Multi-Hop Acknowledgements to Discover and Reliably Communicate over Unidirectional Links in Ad Hoc Networks," in IEEE Wireless Communications and Networking Conference, 2000.
[3] RAVI PRAKASH, "A Routing Algorithm forWireless Ad Hoc Networks with Unidirectional Links," Wireless Networks , vol. 7, no. 6, pp. 617-625, 2001.
[4] Daniel Mossé Venugopalan Ramasubramanian, "BRA: A Bidirectional Routing Abstraction for Asymmetric Mobile Ad Hoc Networks," IEEE/ACM TRANSACTIONS ON NETWORKING, pp. 116-129, 2008.
[5] SHIOW-FEN HWANG, CHYI-REN DOW YI-YU SU, "An Efficient Cluster-Based Routing Algorithm in Ad Hoc Networks with Unidirectional Links," JOURNAL OF INFORMATION SCIENCE AND ENGINEERING, pp. 1409-1428, 2008.
[6] Jian-de Lu, Jia-jia Tang Zhen-zhong Wang, "Neighbor Monitoring Mechanism to Solve Unidirectional Link Problem in MANET," in Wireless and Mobile Communications, International Conference, 2007, pp. 55-59.
[7] LIU Yuan-an, LIU Kai-ming, ZHAI Lin-bo, YANG Ming ZHUANG Lin, "An adaptive algorithm for connecting mobile ad hoc network to Internet with unidirectional links supported," The Journal of China Universities of Posts and Telecommunications, pp. 44-49, 2010.
[8] Sung-Ju Lee, Jun-Beom Lee Young-Bae Ko, "Ad Hoc Routing with Early Unidirectionality Detection and Avoidance," in IFIP International Conference on Personal Wireless Communications, 2004, pp. 132-146.
[9] Y. Hu, D. Maltz D. Johnson, "Request for Comments: 4728 (The Dynamic Source Routing Protocol (DSR))," Rice University, Microsoft Research, Experimental 2007.
[10] Jorg Nolte Reinhardt Karnapke, "Unidirectional Link Counter - A Routing Protocol for Wireless Sensor Networks with Many Unidirectional Links," in 14th Annual Mediterranean Ad Hoc Networking Workshop , 2015.
[11] Juan-Antonio Cordero , Jiazi Yi , Yuichi Igarashi Thomas Clausen, "Use ’em or lose ’em: On unidirectional links in reactive routing protocols," Elsevier Science Publishers, pp. 51-64, 2018.
[12] Y.Hui Y.Fengjie, "Research on DSDV routing protocol based on wireless mesh network," in Chinese control and decision conference, 2018.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 556-563, December 2019
Abnormal switching transients are those transients that arise during unbalanced faults interruption e.g., single-line-to-ground (S.L.G) fault, double-line-to-ground (D.L.G) fault, or three-phase fault. Circuit-breaker is the first line of defense to face these abnormal transients. Whenever a circuit-breaker encounters these abnormal transients, it changes its state from close to open by moving away its closed contacts. Circuit-breaker try to block large amount of fault-current from flowing, and these transients appear in the form of multitude-voltage around circuit-breaker’ open contacts. This large amount of voltage is known as transient recovery voltage (T.R.V). This T.R.V is normally three to five-times of the rated operating voltage. Circuit-breaker failure/damage occurs only when it is unable to withstand this T.R.V for which it is designed. In this research, methodology is developed to correctly find the value of T.R.V by taking care of various abnormal and worst-case switching scenarios. T.R.V curtailment is a serious challenge for the power system experts. This study is a competent effort to address this challenge. Electromagnetic-Alternative Transient Program (EM-A.T.P) software is used for simulation of the test network IEEE-39 bus system.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 543-546, December 2019
Concrete is the key component that is usually used in construction as in the world containing 70-75 percent of natural rocks, sand and 10-15 percent of Portland cement. Concerns about global sustainability of construction technology and the efficient use of structural aggregates in concrete will help minimize construction problems. Because of the high cost of cement, construction has become more costly and due to CO2 pollution and other harmful heavy metals during the cement production process, it becomes environmentally dangerous, so we can partly replace the portend cement with fly ash created as solid waste by different industries and power generation plants. At dumping sites, this fly ash is dumped locally, causing air pollution. Because of its binding behavior, we use fly ash as a binding constituent. The purpose behind this research work was to evaluate the tensile and compressive strength of specimens while using different fly ashes in favor of environmentally friendly technique and to perform the properties of workout strength and the variation pattern with mixing in different proportions of different tests such as tensile and compressive strength after 7, 14, 21 and 28 days of healing. Cement was replaced by various types of ashes including coal ash, Vachellia nilotica (Kikar) ash, Dalbergia sisso (shisham) with different concentration of 10, 20, 30, 40 and 50 % of each. Results showed that when 10% of coal ash, Vachellia nilotica (kikar) ash, Dalbergia sisso (shisham) was used, concrete and mortar tensile and compressive strength increased with the increase in healing time. While the decrease in intensity was observed in samples with proportions of 20, 30, 40 and 50% with the same healing time. In addition the samples with coal, Vachellia nilotica (Kikar) ash, Dalbergia sissoo (shisham) ash, a decreasing trend in strength along with weight decrease was observed. By using coal ash upto 10% can reduce the 13.5% construction cost without losing strength properties in concrete. Such building materials can be used in lightweight buildings such as farm buildings for poultry and dairy farm buildings.
[1] Aragao, F. (2007). Effects of aggregates on properties and performance of mastics and superpave hot mix asphalt mixtures.J. Clerk Maxwell, A Treatise on Electricity and Magnetism, 3rd ed., vol. 2. Oxford: Clarendon, 1892, pp.68–73.
[2] Benhelal, E., Zahedi, G., Shamsaei, E., & Bahadori, A. (2013). Global strategies and potentials to curb CO2 emissions in cement industry. Journal of cleaner production, 51, 142-161.
[3] Cheah, C. B., & Ramli, M. (2011). The implementation of wood waste ash as a partial cement replacement material in the production of structural grade concrete and mortar: An overview. Resources, Conservation and Recycling, 55(7), 669-685.
[4] Dmitrienko, M. A., & Strizhak, P. A. (2018). Coal-water slurries containing petrochemicals to solve problems of air pollution by coal thermal power stations and boiler plants: An introductory review. Science of the Total Environment, 613, 1117-1129.
[5] Drochytka, R., Zach, J., Korjenic, A., & Hroudová, J. (2013). Improving the energy efficiency in buildings while reducing the waste using autoclaved aerated concrete made from power industry waste. Energy and Buildings, 58, 319-323.
[6] Formosa, L. M., Mallia, B., Bull, T., & Camilleri, J. (2012). The microstructure and surface morphology of radiopaque tricalcium silicate cement exposed to different curing conditions. Dental Materials, 28(5), 584-595.
[7] Kampa, M., & Castanas, E. (2008). Human health effects of air pollution. Environmental pollution, 151(2), 362-367.
[8] Kazmi, Syed MS, Safeer Abbas, Muhammad A. Saleem, Muhammad J. Munir, and Anwar Khitab. "Manufacturing of sustainable clay bricks: Utilization of waste sugarcane bagasse and rice husk ashes." Construction and building materials 120 (2016): 29-41.
[9] Madlool, N. A., Saidur, R., Hossain, M. S., & Rahim, N. A. (2011). A critical review on energy use and savings in the cement industries. Renewable and Sustainable Energy Reviews, 15(4), 2042-2060.
[10] Meddah, M. S., Zitouni, S., & Belâabes, S. (2010). Effect of content and particle size distribution of coarse aggregate on the compressive strength of concrete. Construction and Building Materials, 24(4), 505-512.
[11] Pascale, G., Di Leo, A., & Bonora, V. (2003). Nondestructive assessment of the actual compressive strength of high-strength concrete. Journal of Materials in Civil Engineering, 15(5), 452-459.
[12] Qian, Z., Garboczi, E. J., Ye, G., & Schlangen, E. (2016). Anm: a geometrical model for the composite structure of mortar and concrete using real-shape particles. Materials and Structures, 49(1-2), 149-158.
[13] Sajedi, F., & Shafigh, P. (2012). High-strength lightweight concrete using leca, silica fume, and limestone. Arabian journal for Science and engineering, 37(7), 1885-1893.
[14] Schneider, M., Romer, M., Tschudin, M., & Bolio, H. (2011). Sustainable cement production—present and future. Cement and concrete research, 41(7), 642-650.
[15] Siddique, R. (2012). Utilization of wood ash in concrete manufacturing. Resources, conservation and Recycling, 67, 27-33.
[16] Wang, H. T., and L. C. Wang. "Experimental study on static and dynamic mechanical properties of steel fiber reinforced lightweight aggregate concrete." Construction and Building Materials 38 (2013): 1146-1151.
[17] Wongkeo, W., & Chaipanich, A. (2010). Compressive strength, microstructure and thermal analysis of autoclaved and air cured structural lightweight concrete made with coal bottom ash and silica fume. Materials Science and Engineering: A, 527(16-17), 3676-3684.
Yasar, E., Atis, C. D., Kilic, A., & Gulsen, H. (2003). Strength properties of lightweight concrete made with basaltic pumice and fly ash. Materials Letters, 57(15), 2267-2270.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 529-533, December 2019
In this paper estimation of PFC (Primary frequency control) reserves and their adequacy has been investigated. Since Pakistan is aiming to add more renewable generation to its power system to reduce their dependency on fossil fuels and because of their concern about the environmental polution. And this renewable penetration adds variability and complexity to the power grid and doesn’t add inertia to the system. So therefore overall inertia of the system decreases in result of addition of renewables. When the inertia of the system decreases, frequency deviations increases because of the renewable forecast error and other contingencies in the grid. To study thiese frequency deviations expected scenario for Pakistan power system are created for current and future Pakistan power system. From these studies, estimation of PFC reserves are made in this paper for future Pakistan power system. This paper also explain the frequency instability arises due to high renewable integration in power system and their feasible solutions for future Pakistan power system.
1] Hassan. Bevrani, Robust Power System Frequency Control, Second. Springer Cham Heidelberg New York Dordrecht London, 2009.
[2] European Network of Transmission System Operators (ENTSO-E), “ENTSO-E Operation Handbook (Policy 1),” no. Cc, p. 63, 2009.
[3] A. F. Guidelines, “Network Code on Load-Frequency Control and Reserves in line with the ACER Framework Guidelines on Electricity System Operation,” vol. 6, no. February 2012, 2013.
[4] E. Ela, M. Milligan, and B. Kirby, “Operating Reserves and Variable Generation: A comprehensive review of current strategies, studies, and fundamental research on the impact that increased penetration of variable renewable generation has on power system operating reserves,” no. August, pp. 1–103, 2011.
[5] K. Das, M. Litong-palima, P. Maule, and P. E. Sørensen, “Adequacy of Operating Reserves for Power Systems in Future European Wind Power Scenarios,” 2015.
[6] K. Das, M. Altin, A. D. Hansen, P. E. Sorensen, and H. Abildgaard, “Primary reserve studies for high wind power penetrated systems,” 2015 IEEE Eindhoven PowerTech, PowerTech 2015, 2015.
[7] N.2009c, “Procedure for Determining Interconnection Frequency Limits.,” 2003.
[8] P. KUNDUR, “Power System Stability and Control.” .
[9] R. Eriksson, N. Modig, and K. Elkington, “Synthetic inertia versus fast frequency response : a definition,” vol. 12, pp. 507–514, 2018.
[10] E. P. Act, “Performance Standards (Distribution) Rules 2005 of Pakistan,” vol. 1997, no. January, pp. 1–26, 2005.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 525-528, December 2019
A microgrid is a combination of distributed energy sources to generate power to the consumer or exchange electrical energy to the grid or working in a standalone system. The microgrid may be on-grid or off-grid. Distributed Generators (DG, s) are more reliable on-site selection. Therefore, a hybrid energy system came into existence. Like to combine solar PV, wind, small Hydro, and diesel generator and fuels cells. Solar PV, wind and diesel generator hybrid system are more analyzed previously in the research study. In this research PV, Batteries and diesel Gen are combined to make a hybrid system connected to the utility grid, which is economical and reliable. The potential resource data were downloaded from NASA through the homer tool. Homer software is used for the simulation to simulate and analyze the hybrid system.
[1] M. pd. Zerta, P. R. Schmidt, C. Stiller, and H. Landinger, “Alternative World Energy Outlook (AWEO) and the role of hydrogen in a changing energy landscape,” Int. J. Hydrogen Energy, vol. 33, no. 12, pp. 3021–3025, 2008.
[2] M. D. A. Al-falahi, S. D. G. Jayasinghe, and H. Enshaei, “A review on recent size optimization methodologies for standalone solar and wind hybrid renewable energy system,” Energy Convers. Manag., vol. 143, pp. 252–274, 2017.
[3] Y. Z. Alharthi, M. K. Siddiki, and G. M. Chaudhry, “The New Vision and the Contribution of Solar Power in the Kingdom of Saudi Arabia Electricity Production,” IEEE Green Technol. Conf., pp. 83–88, 2017.
[4] K. Y. Lau, M. F. M. Yousof, S. N. M. Arshad, M. Anwari, and A. H. M. Yatim, “Performance analysis of hybrid photovoltaic/diesel energy system under Malaysian conditions,” Energy, vol. 35, no. 8, pp. 3245–3255, 2010.
[5] M. B. M. Rozlan, A. F. Zobaa, and S. H. E. A. Aleem, “The Optimisation of Stand-Alone Hybrid Renewable Energy Systems Using Integration of Stand Alone Hybrid Renewable Energy Systems Optimisation using HOMER,” no. July, 2011.
[6] S. N. Kane, A. Mishra, and A. K. Dutta, “Preface: International Conference on Recent Trends in Physics (ICRTP 2016),” J. Phys. Conf. Ser., vol. 755, no. 1, 2016.
[7] V. Khare, S. Nema, and P. Baredar, “Solar – wind hybrid renewable energy system : A review,” Renew. Sustain. Energy Rev., vol. 58, pp. 23–33, 2016.
[8] B. S. Borowy and Z. M. Salameh, “Methodology for optimally sizing the combination of a battery bank and PV array in a Wind/PV hybrid system,” IEEE Trans. Energy Convers., vol. 11, no. 2, pp. 367–373, 1996.
[9] J. L. Bernal-Agustin and R. Dufo-Lopez, “Simulation and optimization of stand-alone hybrid renewable energy systems,” Renew. Sustain. Energy Rev., vol. 13, no. 8, pp. 2111–2118, 2009.
[10] T. Lambert, P. Gilman, and P. Lilienthal, “Micropower System Modeling with Homer,” Integr. Altern. Sources Energy, pp. 379–418, 2006.
[11] Y. Z. Alharthi, M. K. Siddiki, and G. M. Chaudhry, “Techno-economic analysis of hybrid PV/Wind system connected to utility grid,” 2019 IEEE Texas Power Energy Conf. TPEC 2019, pp. 1–6, 2019.
[12] M. Moniruzzaman and S. Hasan, “Cost analysis of PV/wind/diesel/grid connected hybrid systems,” 2012 Int. Conf. Informatics, Electron. Vision, ICIEV 2012, pp. 727–730, 2012.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 521-524, December 2019
Integration of renewable energy sources in power system has increased rapidly in recent years due to environmental effects such as climate change and global warming. Renewable sources provide clean and sustainable energy but it has some negative effects on power system. Renewable sources are mostly inertia-less sources and they increase instability in system. Frequency deviations are main indicator of their fluctuation because of their variable energy nature. To stabilize frequency, spinning reserves are there. Most of generators providing spinning reserves are fossil fuel generators, their operation is costly and not environment friendly. To minimize dependence on spinning reserves, demand side response is a method, which can provide frequency reserves cheaply and have a fast response. Demand side response is to shift loads of end users from peak hours to off-peak hours in response to frequency deviations or any contingency in power system with agreement with end users. This paper proposes the use of demand response through load management. Direct control method is used to control loads of end users. In response to frequency deviations, loads are ON/OFF to stabilize the frequency. For that purpose, a simple microgrid is designed in MATLAB/SIMULINK comprises of Solar PV and diesel generation sources. Loads are controlled through simple controller, which monitor frequency and act accordingly. Different scenarios are simulated, with demand side response and without demand side response. The results showed that with demand side response, frequency can be stabilizing quickly and system can be prevented from instability.
Syed Afzal Shah: Department of Electrical Energy System Engineering, US-Pakistan Center for Advanced Studies in Energy (US-PCASE), UET Peshawar
Zafar Ahmad: Department of Electrical Energy System Engineering, US-Pakistan Center for Advanced Studies in Energy (US-PCASE), UET Peshawar
Israr Uddin: Department of Electrical Energy System Engineering, US-Pakistan Center for Advanced Studies in Energy (US-PCASE), UET Peshawar
Muhammad Nazeer: Department of Electrical Energy System Engineering, US-Pakistan Center for Advanced Studies in Energy (US-PCASE), UET Peshawar
[1] U. N. Grid, “Frequency response National Grid,” 2015.
[2] M. Aunedi, P. Aristidis Kountouriotis, J. E. Ortega Calderon, D. Angeli, and G. Strbac, “Economic and environmental benefits of dynamic demand in providing frequency regulation,” IEEE Trans. Smart Grid, vol. 4, no. 4, pp. 2036–2048, 2013
[3] J. Han and M. A. Piette, “Solutions for Summer Electric Power Shortages : Demand Response and its Applications in Air Conditioning and Refrigerating Systems,” Refrig. Air Cond. Electr. Power Mach., vol. 29, no. 1, pp. 1–4, 2008.
[4] N. Boogen, S. Datta, and M. Filippini, “Demand-side management by electric utilities in Switzerland: Analyzing its impact on residential electricity demand,” Energy Econ., vol. 64, pp. 402–414, 2017.
[5] M. A. Zehir and M. Bagriyanik, “Demand Side Management by controlling refrigerators and its effects on consumers,” Energy Convers. Manag., vol. 64, pp. 238–244, 2012.
[6] K. Pandiaraj, P. Taylor, N. Jenkins, and C. Robb, “Distributed load control of autonomous renewable energy systems,” IEEE Trans. Energy Convers., vol. 16, no. 1, pp. 14–19, 2001.
[7] A. Basit, T. Ahmad, A. Y. Ali, K. Ullah, G. Mufti, and A. D. Hansen, “Flexible modern power system: Real-time power balancing through load and wind power,” Energies, vol. 12, no. 9, pp. 1–15, 2019.
[8] G. R. Aghajani, H. A. Shayanfar, and H. Shayeghi, “Demand side management in a smart micro-grid in the presence of renewable generation and demand response,” Energy, vol. 126, pp. 622–637, 2017.
[9] G. Bazydło and S. Wermiński, “Demand side management through home area network systems,” Int. J. Electr. Power Energy Syst., vol. 97, no. August 2017, pp. 174–185, 2018.
[10] J. A. Short, D. G. Infield, and L. L. Freris, “Stabilization of grid frequency through dynamic demand control,” IEEE Trans. Power Syst., vol. 22, no. 3, pp. 1284–1293, Aug. 2007.
[11] F. Baccino, F. Conte, S. Grillo, S. Massucco and F. Silvestro, “Frequency Regulation by Management of Building Cooling Systems through Model Predictive Control”, In: Power Systems Computation Conference, Wroclaw, Poland, Aug. 2014
[12] A. Molina-García, F. Bouffard, and D. Kirschen, “Decentralized demand-side contribution to primary frequency control,” IEEE Trans. Pow. Syst., vol. 26, no. 1, pp. 411–419, 2011
[13] Z. Xu, J. Østergaard, and M. Togeby, “Demand as Frequency Controlled Reserve,” IEEE Trans. Pow. Syst., vol. 26, no. 3, pp. 1062–1071, Nov. 2011
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 514-520, December 2019
Disaster is a sudden accident or a catastrophic calamity that causes incredible damage or loss of life. Disaster has different types like Tornadoes, Floods, Wildfires, and Earthquakes. When a disaster occurs, many people get injured and many people die due to delay in timely treatment. But in a traditional rescue system, rescue workers are unaware of suitable and nearest health centers (hospitals) per patient condition. Rescue teams need to be updated about the capacity of the hospital and to know the shortest route to bring disaster patients to the most suitable hospital in minimum possible time. If resources are not available or occupied once they have arrived, retransfer from one hospital to another will be required which takes longer time and in severe condition, the patient could die. Smart Resource Allocation and Information System increases the chances of life in disaster by providing timely treatment. With the help of Smart Resource Allocation and Information System, the rescue teams will be aware of the shortest path, availability of specialist per patient condition and capacity of the hospital where disaster patient is to be assigned. So, the application allows timely treatment and better resuscitation services for catastrophic victims. Our designed system provides the solution for patient load balancing and patient load migration, better utilization of available resources, especially in resource constraint scenarios.
[1]. Dobson, Doan and Hung, "A systematic review of patient tracking systems," Journal of Emergency Medicine, p. 242‑248, 2013.
[2]. J. Marshall and S. Mathews, "Disaster preparedness for the elderly: An analysis," J Aging Emerg Econ, vol. 2, p. 79‑92, 2010.
[3]. Tavakoli, Nahid, Y. mohammadian, M. H. S. Reza and K. Mahmoud, "Health sector readiness for patient tracking in disaster: A literature reviewon concepts and patterns," International Journal of Health System and Disaster Management, vol. 4, no. 3, pp. 75-81, 2016.
[4]. D. Guha‑Sapir, P. Hoyois and B. Below, "Annual Disaster Statistical Review 2014 – The Numbers and Trends," 2014.
[5]. Schultz, Carlh, Koenig, Kristil, Noji And Anderick, "A Medical Disaster Response To Reduce Immediate Mortality After An Earthquake," The New England Journal Of Medicine, Vols. 438-448, 1996.
[6]. C. Yu-Feng, K. Alagappan, G. Arpita, D. Colleen, T. Malti and Z. S. B, "Disaster management following the Chi-Chi earthquake in Taiwan," Prehospital and disaster medicine, vol. 21, pp. 196-202, 2006.
[7]. Sahar and Z. J. Ahmed, "Load Balancing for Disaster Recovery and Management," Wireless Personal Communications, vol. 90, no. 1, p. 369–379, 2016.
[8]. Ardalan, H. Mowafi, H. M. Ardakani, F.Abolhasanai, A. Zanganeh and H. Safizadeh, "Effectiveness of a primary health care program on Urban and Rural Community Disaster Preparedness,Islamic Republic of Iran: A Community Intervention Trial," Disaster Medicine and Public Health Preparedness, vol. 7, pp. 481-90, 2013.
[9]. D. Cook and S. Das, "How smart are our environments? An updated look at the state of the art," Pervasive and Mobile Computing, vol. 3, pp. 53-73, 2007.
[10]. Rathore, A. Farooq, G. J. E., G. R. Raissi and L. Jianan, "Experience and Preparedness of Major Incidents in Developing Countries," Disaster Medicine and Public Health Preparedness, vol. 7, pp. 127-8, 2013.
[11]. K. Murad, D. Sadia, J. Sohail, M. Gohar, G. Hemant and S. C. Mukhopadhyaye, "Context-aware low power intelligent SmartHome based on the Internet of things," Computers & Electrical Engineering, vol. 52, p. 208–222, 2016.
[12]. G. Marres, M. Bemelman, J. v. der and L. Leenen, "Development of a Permanent Facility for Management of Incident Casualties," Eur J Trauma Emerg Surg, vol. 35, pp. 203-11, 2009.
[13]. Paul, A. Ahmad, M. M. Rathore and S. Jabbar, "Smartbuddy: defining human behaviors using big data analytics in social internet of things," IEEE Wireless Communications, vol. 23, no. 05, pp. 68 - 74, 2016.
[14]. M. Carlton, "Surge capacity management and patient identification in," Elsevier Health Sciences, 2006.
[15]. T. Rich, P. Biddinger, R. Zane, A. Hassol, L. Savitz and M. Warren, "Recommendations for a National Mass Patient and Evacuee Movement," Agency for Healthcare Research and Quality, 2009.
[17]. Rehman, A.U., Asif, R.M., Tariq, R., Javed, A.: GSM based solar automatic irrigation system using moisture, temperature and humidity sensors. In: International Conference on Engineering Technology and Technopreneurship (ICE2T), Kuala Lumpur, pp. 1–4 (2017).
[18]. U. Christophe, U. F. Van, D. Emilie and D. Michel, "Pre-Hospital Simulation Model For Medical Disaster Management," in IEEE Proceedings of the 2013 Winter Simulation Conference, Neder-Over-Heembeek, 2013.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 507-513, December 2019
Maintenance and Overlay resolve medium distress, but reconstruction can be feasible and cost-effective because asphalt pavement deteriorated drastically with time and traffic. Therefore, pavements are required to be reconstructed or rehabilitated. Reuse of such construction waste is gaining popularity with the passage of time due to its benefits. The cost and shortage of virgin aggregate have encouraged the use of reclaimed asphalt pavement, and involved in regular practice in various countries around the world. Asphalt is 100% recyclable product in some states of US, but RAP usage has not yet been established in Pakistan. Therefore, in this research different percentages of aged aggregates are used in conjunction with virgin aggregates in asphalt mixtures. The virgin and RAP asphalt samples were then compared in terms of Marshall Stability, Rut resistance and indirect tensile strength (IDT). 22 samples including conventional and different RAP percentages were prepared for Marshall Stability, 10 samples for Rutting and 12 samples for IDT. It has concluded that the 60 percent RAP aggregate when used in conjunction with virgin aggregate in asphalt mixture gives improved Marshall Stability as compared to virgin aggregates when used in asphalt mixture, also the flow values of the 60 percent aged aggregate sample is neither open to rut of fatigue as compared to asphalt mixture prepared with virgin aggregate, and the indirect tensile strength of RAP mixture with 60% aged aggregate is high as compared to the asphalt mixture prepared with 100 percent virgin aggregates.
[1] Kheiralipour, Kamran, and Soraya Hoseinpour. "Determining and Modeling Shearing Properties of Peppermint Stem." Caspian Journal of Applied Sciences Research 5.3 (2016).
[2] McDaniel, R.S., Soleymani, H., and Slah, A. (2002). Use of Reclaimed Asphalt (RAP) under Superpave Specifications, Report No. FHWA/IN/JTRP-2002/6, North Central Superpave Center, West Lafayette, IN, USA.
[3] McDaniel, R.S., Soleymani, H., Anderson, R.M., Turner, P., and Peterson, R. (2000). Incorporation of Reclaimed Asphalt Pavement in the Superpave System, NCHRP 9-12, National Cooperative Highway Research Program, Transportation Research Board.
[4] Hofko, B., et al. "Impact of maltene and asphaltene fraction on mechanical behavior and microstructure of bitumen." Materials and Structures 49.3 (2016): 829-841.
[5] Handbook, Median. "Florida Department of Transportation." Tallahassee, FL (1997).
[6] Mehta, P. Kumar, and P. J. M. Monteiro. "Durability." P. K. Mehta.--Concrete, microstructure, properties and materials.--Westerville: JP Skalny (Ed) (1993): 113-155.
[7] Kosmatka, Steven H., Beatrix Kerkhoff, and William C. Panarese. Design and control of concrete mixtures. Vol. 5420. Skokie, IL: Portland Cement Association, 2002.
[8] Neville, Adam M., and Jeffrey John Brooks. Concrete technology. England: Longman Scientific & Technical, 1987.
[9] Jones, R., and MFi Kaplan. "The effect of coarse aggregate on the mode of failure of concrete in compression and flexure." Magazine of Concrete Research 9.26 (1957): 89-94.
[10] Abdelhak, Bordjiba, et al. "Effect of recycled asphalt aggregates on the rutting of bituminous concrete in the presence of additive." Arabian Journal for Science and Engineering 41.10 (2016): 4139-4145.
[11] Martinho, F. C. G., L. G. Picado-Santos, and S. D. Capitão. "Feasibility assessment of the use of recycled aggregates for asphalt mixtures." Sustainability 10.6 (2018): 1737.
[12] Higuera Sandoval, Carlos Hernando, Xiomara Vanessa Camargo Amaya, and Edwin Alexander Suárez Molano. "Effect of Aging on the Properties of Asphalt and Asphalt Mixtures." Ingeniería y Universidad 19.2 (2015): 335-349.
[13] Caro, Silvia, et al. "Moisture susceptibility of asphalt mixtures, Part 1: mechanisms." International Journal of Pavement Engineering 9.2 (2008): 81-98.
[14] Hussain, Arshad, and Qiu Yanjun. "Evaluation of asphalt mixes containing reclaimed asphalt pavement for wearing courses." Proceedings. International Conference on Traffic and Transportation Engineering, School of Civil Engineering, Southwest Jiaotong University, Chengdu, China, IPCSIT. Vol. 26. 2012.
[15] Abdelhak, Bordjiba, et al. "Effect of recycled asphalt aggregates on the rutting of bituminous concrete in the presence of additive." Arabian Journal for Science and Engineering 41.10 (2016): 4139-4145
[16] Martinho, F. C. G., L. G. Picado-Santos, and S. D. Capitão. "Feasibility assessment of the use of recycled aggregates for asphalt mixtures." Sustainability 10.6 (2018): 1737.
[17] ASTM, D. "Standard test method for indirect tensile (IDT) strength of Asphalt mixtures." (2012).
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 496-506, December 2019
The aim of this research work is to conduct an extensive performance evaluation of a box type dual Booster Mirror solar cooker under tracking free conditions. To cope up with the need for continuous adjustment of the cooker during the cooking operation the optimal tilt angles of the Booster Mirrors have been calculated through numerical calculations for the location of 340 latitude. To evaluate the Performance parameters of the cooker, tests under tracking free conditions have been carried out and parameters such as, First and Second Figure of Merit, Cooking power, exergy efficiency and the Quality Factor, are evaluated for the BSC. Moreover, the cooker is tested on-field and different types of food items are cooked. The results indicate that orienting the Booster Mirrors at their respective optimal angles provides a viable and convenient alternative to the need for continuous tracking of the sun during cooking hours. With this technique the said cooker can be used for cooking 6.4 kg of 6 different dishes in a single day i-e. from 9:00 Am to 3:00 Pm in two batches.
[1] Miller, K., Tangley, L., 1991. Trees of Life: Saving Tropical Forests and Their Biological Wealth. Beacon Press, Boston
[2] Farooqui, Suhail Zaki. “Angular Optimization of Dual BM SCs – Tracking Free Experiments with Three Different Aspect Ratios.” SE, vol. 114, Apr. 2015, pp. 337–348.
[3] Kumar, Naveen, et al. “An Exergy Based Unified Test Protocol for SCs of Different Geometries.” RE, vol. 44, Aug. 2012, pp. 457–462, 10.1016/j.renene.2012.01.085. Accessed 27 July 2019
[4] Purohit, I., and P. Purohit. “Effect of Instrumentation Error on the First and Seco F1nd Figures of Merit (F1and F2) of a Box-Type SC.” International Journal of Ambient Energy, vol. 29, no. 2, Apr. 2008, pp. 83–92, 10.1080/01430750.2008.9675061. Accessed 6 Aug. 2019
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 431-438, December 2019
In this paper the energy crisis of Pakistan is discussed with comparative analysis due to a continuous and wide gap among available system producing capacity and demand. The deteriorating of shortages (power) has become a main problem in the view of politics, showing the difficulties for persons and companies. It looms to weaken the reliability and legality of government and to additional pressure the societal fabric of the nation. The energy crisis did not arise suddenly. It is the straight consequence of impulsive and irresponsible energy policies over the last three years. These energy policies have obstructed the growth of low and plentiful domestic energy resources. They have also caused in very incompetent fuel mix selections, lack of energy and security of the economics. The country’s energy insolvency is eventually due to huge official and failure of the governance. This paper analyzes the issues confronting Pakistan’s energy sector and classifies the key elements of a hidden policy reply to address the nation’s tough energy crisis. In order to assess these diverse renewable energy alternatives a comparative analysis of SAARC countries is performed using a standard criteria framework that are likely to be decisive in the making of decisions. The assessment shows that completely the renewable energy system conformations are not economically viable in the country while the renewable energy local resources could bring down the price of energy. An improved understanding of the whole processes by which innovation occurs is important, both theoretically and to inform the policy makers to support innovation to attain more sustainable technologies.
[1] 1. Patlitzianas, K.D., et al., Sustainable energy policy indicators: Review and recommendations. Renewable Energy, 2008. 33(5): p. 966-973.
[2] 2. Javed, A., Study to assess renewable energy development in South Asia ; Achievements and the way forward in the perspective of policies aand investment opportunities SAARC Energy Centre, Islamabad, December 2015.
[3] 3. Oyedepo, S.O., Energy and sustainable development in Nigeria: the way forward. Energy, Sustainability and Society, 2012. 2(1): p. 15.
[4] 4. von Hippel, D., et al., Energy security and sustainability in Northeast Asia. Energy Policy, 2011. 39(11): p. 6719-6730.
[5] 5. Khatib, H.e.a., World Energy Assessment - Energy and the Challenge of Sustainability (UNDESA - UNDP - WEA - WEC). Energy Security, 2000. Chapter 4 of J. Goldemberg et al(United Nations Development Programme, New York).
[6] 6. Berry, T. and M. Jaccard, The renewable portfolio standard:: design considerations and an implementation survey. Energy Policy, 2001. 29(4): p. 263-277.
[7] 7. Jacobsson, S. and V. Lauber, The politics and policy of energy system transformation—explaining the German diffusion of renewable energy technology. Energy policy, 2006. 34(3): p. 256-276.
[8] 8. Menanteau, P., D. Finon, and M.-L. Lamy, Prices versus quantities: choosing policies for promoting the development of renewable energy. Energy policy, 2003. 31(8): p. 799-812.
[9] 9. Couture, T.D., et al., Policymakers guide to feed-in tariff policy design. 2010, National Renewable Energy Lab.(NREL), Golden, CO (United States).
[10] 10. Li, X., Diversification and localization of energy systems for sustainable development and energy security. Energy policy, 2005. 33(17): p. 2237-2243.
[11] 11. Ozturk, I., Energy dependency and security The role of effciency and renewable energy sources. april, 2014.
[12] 12. Stirling, A., Diversity and ignorance in electricity supply investment: addressing the solution rather than the problem. Energy Policy, 1994. 22(3): p. 195-216.
[13] 13. Ream, M.K., When it comes to energy, countries should mix it up. May 6, 2015.
[14] 14. Sturm, C., Inside the Energiewende: Policy and Complexity in the German Utility Industry. Issues in Science and Technology, Winter 2017. 2(33).
[15] 15. A. Gürhan Kök, K.S., Şafak Yücel, Impact of electricity pricing policies on renewable energy investments and carbon emissions. December 2, 2016.
[16] 16. Monasterolo, I. and M. Raberto, The impact of phasing out fossil fuel subsidies on the low-carbon transition. Energy Policy, 2019. 124: p. 355-370.
[17] 17. Kefford, B.M., et al., The early retirement challenge for fossil fuel power plants in deep decarbonisation scenarios. Energy policy, 2018. 119: p. 294-306.
[18] 18. Lund, H. and B.V. Mathiesen, Energy system analysis of 100% renewable energy systems—The case of Denmark in years 2030 and 2050. Energy, 2009. 34(5): p. 524-531.
[19] 19. Morthorst, P.E., The development of a green certificate market. Energy policy, 2000. 28(15): p. 1085-1094.
[20] 20. Foxon, T.J., et al., UK innovation systems for new and renewable energy technologies: drivers, barriers and systems failures. Energy policy, 2005. 33(16): p. 2123-2137.
[21] 21. Chuang, M.C. and H.W. Ma, Energy security and improvements in the function of diversity indices—Taiwan energy supply structure case study. Renewable and Sustainable Energy Reviews, 2013. 24: p. 9-20.
[22] 22. Asif, M. and T. Muneer, Energy supply, its demand and security issues for developed and emerging economies. Renewable and Sustainable Energy Reviews, 2007. 11(7): p. 1388-1413.
[23] 23. Loiter, J.M. and V. Norberg-Bohm, Technology policy and renewable energy: public roles in the development of new energy technologies. Energy Policy, 1999. 27(2): p. 85-97.
[24] 24. Lund, H. and W.W. Clark, Management of fluctuations in wind power and CHP comparing two possible Danish strategies. Energy, 2002. 27(5): p. 471-483.
[25] 25. Verde, S., Everybody merges with somebody—The wave of M&As in the energy industry and the EU merger policy. Energy policy, 2008. 36(3): p. 1125-1133.
[26] 26. Gussai Sheikheldin, B.D., Hezron Makundi, Energy policy for industrialization: Tanzanias big development challenge. Dec, 2018.
[27] 27. Mourelatou, A., B.E. Research, and C. Limited, Renewable energies: success stories. 2001: Office for official publications of the european communities.
[28] 28. Abdmouleh, Z., R.A. Alammari, and A. Gastli, Review of policies encouraging renewable energy integration & best practices. Renewable and Sustainable Energy Reviews, 2015. 45: p. 249-262.
[29] 29. Mustafa K. Mujeri, T.T.C.a.S.S., Energy Sector in Bangladesh: An agenda for reforms The International Institute for Sustainable Development March 2014.
[30] 30. POWER DIVISION MINISTRY OF POWER, E.A.M.R.G.O.T.P.S.R.O.B., , and Renewable Energy Policy Of Bangladesh. DECEMBER, 18 2008
[31] 31. Roland-Holst, H.G.a.D., Energy Policy Options for Sustainable Development in Bangladesh ADB Economics Working Paper Series, November, 2013.
[32] 32. Policy and regulatory overviews Bhutan 2012. REEEP Policy Database (contributed by SERN for REEEP), 2012.
[33] 33. Bhutan Renewable Energy Policy, 2011
[34] 34. Department of Energy Ministery of Economic Affairs, R.G.o.B., Overview Of Energy Policies Of Bhutan. May, 2009.
[35] 35. NITI Aayog, G.o.I., Draft National Energy Policy June 27, 2017
[36] 36. Prateek, S., Feed-In Tariffs to Make a Comeback in India for Small Solar and Wind Projects. Feb 03, 2018.
[37] 37. REN21, Renewables 2009 global status report.
[38] 38. Mainali, B. and S. Silveira, Financing off-grid rural electrification: country case Nepal. Energy, 2011. 36(4): p. 2194-2201.
[39] 39. Reegle, Policy and regulatoy overviews- Nepal 2012.
[40] 40. Nepal, R., Roles and potentials of renewable energy in less-developed economies: The case of Nepal. Renewable and Sustainable Energy Reviews, 2012. 16(4): p. 2200-2206.
[41] 41. Promote renewable energy technologies (Policy no. 5, Maldives National Energy Policy and Strategy). 2010.
[42] 42. Jung, T.Y., Y.T. Kim, and J.H. Hyun, An Economic Analysis of a Hybrid Solar PV-Diesel-ESS System for Kumundhoo, Maldives. Korea and the World Economy, 2017. 18(S1): p. 109-134.
[43] 43. Timilsina, G.R. and K.U. Shah, Filling the gaps: Policy supports and interventions for scaling up renewable energy development in Small Island Developing States. Energy Policy, 2016. 98: p. 653-662.
[44] 44. Aized, T., et al., Energy security and renewable energy policy analysis of Pakistan. Renewable and Sustainable Energy Reviews, 2018. 84: p. 155-169.
[45] 45. Pakistan, G.o., National Power Policy. 2013.
[46] 46. Engr. Arshad h Abbasi, F.M., Amna Baig, Maha Kamal, Sdpi Pakistan Energy Vision 2035. 2014.
[47] 47. Wijayatunga, P.D., et al., Strategies to overcome barriers for cleaner generation technologies in small developing power systems: Sri Lanka case study. Energy conversion and management, 2006. 47(9-10): p. 1179-1191.
[48] 48. reegle, Policy and regulatory overviews Sri Lanka 2012.
[49] 49. Energy, M.O.P., The Gazette of the Democratic Socialist Republic of Sri Lanka. 11th May, 2008.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 490-495, December 2019
Unstable soil has always been a hurdle in swift construction projects, which can only be eradicated by soil stabilization. Soil stabilization is used for a plethora of projects; however, it is more common in pavement construction, where the purpose is to enhance the strength of soil and to minimize the expenses by providing indigenous available materials. Thus the use of alternative materials like coal combustion product (fly ash) and agriculture waste (Rice husk ash) will certainly lower the cost of construction and therefore reducing the environmental hazards. Hydrometer analysis, Atterberg limits, modified proctor test and California Bearing Ratio (CBR) tests were carried out on the natural soil. Next three different percentages of fly ash (5%, 10% and 15%) were mixed with soil for the CBR test. In this study, the Rice Husk Ash (RHA) was also used for soil stabilization same as the percentages (5%, 10% and 15%) we selected in stabilization for fly ash. After finding CBR, the pavement was designed on natural soil and stabilized soil. The detail cost estimation was performed for 1km length and 7.62m wide road construction with specific thicknesses of designed road on natural soil and stabilized soil. In conclusion, the fly ash and RHA resulted in less thickness of road layers as compared to road design on natural soil. Furthermore, it was also concluded that the road construction cost using the fly ash and RHA is significantly less than the natural soil.
[1] Acosta, H. A., T. B. Edil, and C. H. Benson. "Soil stabilization and drying using fly ash." Geo Engineering Rep 3 (2003).
[2] Alhassan, Musa. "Potentials of rice husk ash for soil stabilization." Assumption university journal of technology 11.4: 246-250 2008.
[3] Bhuvaneshwari, S., R. G. Robinson, and S. R. Gandhi. "Stabilization of expansive soils using fly ash." Fly Ash India 8: 1-10 2005.
[4] Brooks, Robert M. "Soil stabilization with fly ash and rice husk ash." International Journal of Research and Reviews in Applied Sciences 1.3: 209-217 2009.
[5] Fattah, Mohammed Y., Falah H. Rahil, and Kawther YH Al-Soudany. "Improvement of clayey soil characteristics using rice husk ash." Journal of Civil Engineering and Urbanism 3.1: 12-18 2013.
[6] Ji-ru, Zhang, and Cao Xing. "Stabilization of expansive soil by lime and fly ash." Journal of Wuhan University of Technology-Mater. Sci. Ed. 17.4: 73-77 2002.
[7] Keshawarz, M. Saleh, and Utpal Dutta. "Stabilization of south Texas soils with fly ash." Fly ash for soil improvement. ASCE Geotechnical special publication No.36 1993.
[8] Mackiewicz, Scott M., and E. Glen Ferguson. "Stabilization of soil with self-cementing coal ashes." World of Coal Ash (WOCA): 1-7 2005.
[9] Prakash, J., K. Kumari, and V. Kunar. "Stabilization of Soil using Rice Husk Ash." International Journal of Innovative Research in Science, Engineering and Technology 6.7: 12997-13003 2017.
[10] Ramaji, Amin Esmaeil. "A review on the soil stabilization using low-cost methods." Journal of Applied Sciences Research 8.4: 2193-2196 2012.
[11] Rathan Raj, R., S. Banupriya, and R. Dharani. "Stabilization of soil using rice husk ash." International Journal of Computational Engineering Research (IJCER), ISSN (e): 2250-3005 2016.
[12] Tastan, Erdem O., et al. "Stabilization of organic soils with fly ash." Journal of geotechnical and Geo environmental Engineering 137.9: 819-833 2011.
[13] Yadu, Laxmikant, Rajesh Kumar Tripathi, and Dharamveer Singh. "Comparison of fly ash and rice husk ash stabilized black cotton soil." International Journal of Earth Sciences and Engineering 4.06 (2011): 42-45.
[14] https://www.fhwa.dot.gov/pavement/recycling/fach01.cfm
[15] Zha, Fusheng, et al. "Behavior of expansive soils stabilized with fly ash." Natural hazards 47.3 (2008): 509-523.
[16] Zia, Nayyar, and Patrick J. Fox. "Engineering properties of loess-fly ash mixtures for roadbase construction." Transportation Research Record 1714.1 (2000): 49-56.
[17] Zumrawi, Magdi ME. "Stabilization of pavement subgrade by using fly ash activated by cement." American journal of civil engineering and architecture 3.6 (2015): 218-224.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 479-489, December 2019
Most of the industrial machines have reactive power during operation due to which these machines are facing low power factor. One of the important existing public sector industries (where heavy mechanical products are manufactured) of Pakistan is under study, which has a very low power factor i.e. in the range of 0.60 to 0.75. This low power factor not only increase the cost (when there is extra bill and power factor penalty in the rate clause) but also decrease electrical capacity of power distribution system. In the public sector organization, there are five loads in the public sector industry i.e. machine shop load, heat treatment shop load, non-ferrous shop load, gal/forge shop load and fabrication shop. In the proposed thesis, we have utilized capacitor bank in the existing distribution network .We investigated the shunt capacitor banks for Power Factor Correction (PFC). After analysis of the proposed distribution network in Matlab/Simulink software, it was found that using shunt capacitor bank in parallel with load, the power factor increased to 0.95, due to which proposed system and devices efficiency increased. The power losses decreased tremendously. Voltage drop has been reduced. Reduction in size of a conductor and cable reduced cost of the copper. Three different strategies (Central PFC, Regional PFC, Local PFC) are followed in this power factor improvement study and each one is then compared with the previous system.
[1] L. Saribulut, “Electrical Power and Energy Systems,” Electrical Power and EnergySystems, vol. 62, no. 5, pp. 66-71, 2014.
[2] A. Feher, “Definitions and Measurment of Power Factor,” 8th InternationalSymposium of Hungarian Research on Computational Intelligence and Informatics,Hungary, 2001.
[3] F. Marafao, “Power Factor Analysis Under Nonsinusoidal Systems and UnblancedSystems,” Conference on Harmonics and Quality of Power, vol, no, pp.1-8, Oct 2003.
[4] C. Sankaran, Power Quality, CRC Press, 2002, p. 202M. Abdel Aziz, “Power Factor and your Electrical Utility Bill in Egypt,” Transactions on Power Delivery , vol. 18, no. 4, pp. 1567 - 1568, 10 Oct 2003.
[5] L. Cividino, “Power Factor, Harmonic Distortion; Causes, Effects and Considerations,”14th International Telecommunications Energy Conference, vol, no, pp. 1-7, Oct 1992.
[6] E. F. Fuchs, Power Quality in Power Systems and Electrical Machines, AcademicPress, 2008, p. 664.
[7] A. Zobaa, “Comparing Power Factor and Displacement Factor Corrections Based onIEEE Std. 18-2002,” 11th International Conference on Harmonics and Quality of Power, vol, no, pp. 1-5 Sep 2004.
[8] J. Bednarczyk, “Induction Motor Theory,” PDH, 2012, p. 52P. Bimbhra, Electrical Machinery, Khanna, 1997, p. 420.
[9] S. J. Chapman, Electric Machinery Fundamentals, McGraw Hill, 2012, p. 680.J. Siar, “Power Factor of Motors and Generators,” ABB Company, 2014, p. 68.
[10] Neagle NM, Samson DR. Loss reduction from capacitors installed on primary feeders. Power Apparatus Syst Part III Trans Am InstElectrEng 1956;75:950–9.
[11] Kasztenny B, Schaefer J, Clark E. Fundamentals of adaptive protection of large capacitor banks. Power Systems Conference: Advanced Metering, Protection, Control, Communication, and Distributed Resources; 2007 PSC 2007: IEEE; 2007. p. 154–86.
[12] Segura S, Romero R, Rider MJ. Efficient heuristic algorithm used for optimal capacitor placement in distribution systems. Int J Electr Power Energy Syst 2010;32:71–8.
[13] Lidula NWA, Rajapakse AD. Microgrids research: a review of experimental microgrids and test systems. Renewable Sustainable Energy Rev 2011;15:186–202.
[14] Eltawil MA, Zhao Z. Grid-connected photovoltaic power systems: technical and potential problems— a review. Renewable Sustainable Energy Rev 2010;14:112–29.
[15] Taylor CW. Shunt compensation for voltage stability. Power plants and power systems control 2003.In: A proceedings volume from the fifth IFAC symposium, Seoul, South Korea; 15–19 September 2003: Gulf Professional Publishing; 2004. p. 43.
[16] ENERGI. Guidelines to install, operate and maintain ht capacitors & its associated equipment〈http://www.energegroup.com/CapacitorManual.pdf〉
[17] Singh H, Hao S, Papalexopoulos A. Transmission congestion management in competitive electricity markets. IEEE Trans Power Syst 1998;13:672–80.
[18] Hemmati R, Hooshmand R-A, Khodabakhshian A. State-of-the-art of transmission expansion planning: comprehensive review. Renewable Sustainable Energy Rev 2013;23:312–9.
[19] Rao RS, Narasimham S, Ramalingaraju M. Optimal capacitor placement in a radial distribution system using plant growth simulation algorithm. Int J Electr Power Energy Syst 2011;33:1133–9.
[20] Mekhamer SF, Soliman SA, Moustafa MA, El-Hawary ME. Load flow solution of radial distribution feeders: a new contribution. Int J Electr Power Energy Syst 2002;24:701–7.
[22] M. Khodapanah, A. F. Zobaa and M. Abbod, “Monitoring of Power Factor for Induction Machine Using Estimation Technique,” 50th International Universities Power Engineering Conference,( UPEC), vol, no, pp. 1-5, Sep 2015.
[23] M. Khodapanah, A. Zobaa and M. Abbod, “Estimating Power Factor of Induction Motors at any Loading Conditions using Support Vector Regression,” Journal of Electrical engineering, pp. 1-8, Submitted Oct 2017.
[24] R. Guntaka, “Regression and Kriging Analysis for Grid Power Factor Estimation,” Journal of Electrical Systems and Information Technology, pp. 223-233, 2014.
[25] R. Gunaka, Regression and Kriging Analysis for Grid Power Factor Estimation, Lamer university, 2013, p. 98.
[26] M. Khodapanah, A. Zobaa and M. Abbod, “Estimating Power Factor of Induction Motors Using Regression Technique,” International Conference on Harmonics and Quality of Power (ICHQP), vol, no, pp. 1-5 Oct 2016.
[27] Z. J. Paracha, “Estimation of Power Factor by the Analysis of Power Quality Data for Voltage Unbalance Zahir,” Third International Conference on Electrical Engineering, vol, no, pp. 1-6, Sep 2009.
[28] Neelima, S & Subramanyam, Pisupati & A, Srinivasula. (2010). Capacitor Placement in a Distribution System for Power Factor Correction: An Optimization Approach.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 471-478, December 2019
The extensive use of organic and virgin aggregates contributes to their resource exploitation. High priority must be given to the partial substitution of conventional aggregates with recyclable construction material, which must be environmentally responsible and should function equally too as the conventional material. Reclaimed Asphalt Pavements (RAP) is a great choice for the asphaltic wearing and asphaltic base courses of road pavements. In this research, the properties were determined for various combinations and proportions of virgin and aged asphalts. In this study, six blends which were the mixtures of virgin materials and RAP, were analyzed. The blends were designed with a wide variety of RAP blends from 0 to 100 percent by Marshall Method of design. The rutting performance of the blends was also determined in-order to check the deformation. The RAP content was combined with virgin aggregates in such a way that all the test samples had about the same gradation. RAP-containing mixtures showed significant variation and the properties indicated improvement with the increase in RAP material. The results show that up to 40 percent of RAP material can be used efficiently in the construction of wearing courses.
[1] Copeland, Audrey. Reclaimed asphalt pavement in asphalt mixtures: State of the practice. No. FHWA-HRT-11-021. 2011.
[2] Kandhal, Prithvi S., Shridhar S. Rao, and Brad Young. Performance of recycled mixtures in state of Georgia. No. FHWA-GA-94-9209. Georgia. Dept. of Transportation, 1994.
[3] Roberts, Freddy L., et al. "Hot mix asphalt materials, mixture design and construction." (1991).
[4] Sullivan, John. Pavement recycling executive summary and report. Federal Highway Administration, 1996.
[5] Thomas E. Wohlscheid, In-Place Pavement Recycling in New York State, Paper Prepared for the 19th Annual Meeting of the Asphalt Emulsion Manufacturers Association and the 16th Annual Meeting of the Asphalt Recycling & Reclaiming Association,1992.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 466-470, December 2019
Due to electricity stealing, electricity providers in divergent territories particularly inside progressing ones are experiencing from massive losses. This work focuses on electricity energy metering technique which is prepaid with an additional function of theft detection and changing tariff time to peak time and off-peak time. The suggested system has two parts. First part is service main side which will be installed on pole and is connected to distribution lines through service line while second part is main meter which will be installed at consumer side on service main wire. The suggested meter is equipped with transmitter/receiver used for theft detection and GSM module which open the door for bidirectional communication between service provider, users, and main meter getting advantage of the pre-installed GSM framework. Electricity meter can be recharged by customers, simply scratching card and sending hidden code with the help of SMS utilizing GSM module. This work presents new techniques to cover meter tampering and bypassing. In case of theft detection, it will cut off supply, inform the service provider and will show the exact location of theft using GSM. The tariff time will be changed by service provider using SMS with the help of GSM module to meter. The bidirectional GSM communication using SMS is very helpful for user as well as service providers. In case of low balance and if remaining balance become zero, it will cut off supply and inform user as well as service provider.
T. B. Smith, “Electricity theft: a comparative analysis,” Elsevier Journal Energy Policy, vol. 32, no. 18, pp. 2067-2076, Dec. 2004.
Prepaid Energy Meter with GSM Technology Jubi.K, Mareena John Department of Instrumentation and Control Engineering PSG College of Technology Peelamedu, Coimbatore, India.
Karan Gandhi and Hari Om Bansal, “Smart Metering in Electric Power Distribution System”, IEEE International Conference on Control, Automation, Robotics and embedded system (ICARE),2013.
Rezaei, N., & Haghifam, M. R. (2008). Protection scheme for a distribution system with distributed generation using neural networks. International Journal of Electrical Power & Energy Systems, 30(4), 235-241.
Bar-Ilan, A., Sacerdote, B., 2004. The response of criminals and non-criminals to fines. Journal of law and Economics, 47, 1-17. Nagi, K.S. Yap, S.K. Tiong, S.K. Ahmed, and A.M. Mohammad, “Detection of abnormalities and electricity theft using genetic Support Vector Machines,” in proceedings of IEEE Region 10 Conference, pp. 1-6, Nov. 2008.
A.H. Nizar and Z.Y. Dong, “Identification and detection of electricity customer behavior irregularities,” in proceedings of IEEE Power Systems Conference and Exposition, pp. 1-10, Mar. 2009.
An Advanced Smart Energy Metering System for Developing Countries Sai Kiran Ellenki 1 , Srikanth Reddy G 2 Srikanth Ch. 2 1.BITS – Dubai, 2. SLC’s Institute of Engineering and Technology-Hyderabad, India.
Eduardo Werley S.dos Angelos,Osvaldo R.Saavedra, Member IEEE,Omar A.Carmona Cortes,and Andre nunes de Souza,”Detection and Identification of Abnormalities in coustmer Consumptions in Power Distribution Systems”,IEEE 2011,0885-8977
A. Barua, N. Mohammad, M. A. Arafat, K. Khan, A. I. Abbas, and R.Chaudhary “Threephase SMS prepaid digital energy meter,”International Conference on Electrical and Computer Engineering, Dec.2012, in press.
S.S.S.R. Depuru, L. Wang, V. Devabhaktuni, and N. Gudi, “Measures and setbacks for controlling electricity theft,” in proceedings of North American Power Symposium, pp. 1-8, Sept. 2010.
S. H. Ahmad Usman "Evolution of Communicaton Technologies for Smart Grid Application " 2013.
Q. Z. Weiqing Tao1, Beijing Cui 1, "The design of Energy Management Terminal Unit based on double MSP430 MCU," pp. 1-4, 2008.
T.Instruments, "Analysis of Sallen-Key Architecture," p. 1, July 1999 – Revised September 2002.
S. Limited, "TCPIP Application Note," vol. 3, vol. 1, p. 7, pp. 1-10, 20.01.2010 2010.with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor," pp. 1-3.
D. S. Naidu, "The Hybrid Meter Reading System " International Conference on Electrical and Computer Engineering 2012.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 459-465, December 2019
Grid connected Photovoltaic (PV) system installations are rapidly growing around the globe to meet the increasing demand of electricity, leading to a high penetration to the electric grid. Tremendous efforts should be employed to sustain the operation of the PV system at the optimal level. Due to its non-linear nature, PV system can’t handle electrical faults, which may lead to voltage sag at DC side while simultaneously producing dynamics at AC side. This work offers techniques for improving the dynamic performance of the PV system by controlling voltage sag through the application of fuzzy logic based maximum power point techniques (MPPT) at DC-DC boost converter and the regulation of dynamics at inverter by using positive and negative sequence current controlling techniques during grid faults. In the event a fault occurs, fuzzy logic based MPPT controller will be activated, instead of the simple MPPT techniques. These techniques are implemented by designing 1 MW PV system in MATLAB/SIMULINK and validating the results by introducing faults in the implemented system.
[1]. Bacon, A. A. (2016). Dynamic Performace Improvement of Grid connected PV system using a Feed Forward Control Acting on the NPC Inverter Currents. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 10.
[2]. Yeqin Wang, B. R. (2017). Fault Ride-Through Enhancement for Grid-tied PV Systems with Robust Control. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 11.
[3]. Esmaeil Zangeneh Bighash, S. M. (Nov 2017). Improving performance of LVRT capability in single-phase grid-tied PV inverters by a model-predictive controller. ScienceDirect,Electrical Power and Energy Systems, Elsevier Ltd., 13.
[4]. C. Larbes, S. A. (2009). Genetic algorithms optimized fuzzy logic control for the maximum power point tracking in photovoltaic system. ELSEVIER, 8.
[5]. Camilo C. Gomes, A. F. (2018). Damping techniques for grid-connected voltage source converters based on LCL filter: An overview. ELSEVIER, 20.
[6]. Hasanien, H. M. (Dec 2017). Performance improvement of photovoltaic power systems using anoptimal control strategy based on whale optimization algorithm. ELSEVIER Electric Power Systems Research, 9.
[7]. Chin, C. S. (2011). Fuzzy Logic Based MPPT for Photovoltaic Modules Influenced by Solar Irradiation and Cell Temperature. 13th International Conference on Modelling and Simulation, (p. 6). UKSim .
[8]. Prajna Paramita Dash, M. K. (2011). Dynamic Modeling and Performance Analysis of a Grid-Connected Current-Source Inverter-Based Photovoltaic System. IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, 9.
[9]. M. K. Hossain and M.H. Ali, “Overview on Maximum Power Point Tracking (MPPT) Techniques for Photovoltaic Power Systems,” Int. Rev. Electr. Eng., vol. 8, no. 4, pp. 1363–1378, 2013.
[10]. W. Kou, D. Wei, P. Zhang, and W. Xiao, “A Direct Phase-coordinates Approach to Fault Ride Through of Unbalanced Faults in Large-scale Photovoltaic Power Systems,” Electr. Power Components Syst., vol. 43, no. 8–10, pp. 902–913, 2015.
[11]. C. T. Lee, C. W. Hsu, and P. T. Cheng, “A low-voltage ride-through technique for grid-connected converters of distributed energy resources,” IEEE Trans. Ind. Appl., vol. 47, no. 4, pp. 1821–1832, 2011.
[12]. Patsalides-M, Stavrou A, Efthymiou V, Georghiou GE. Towards the establishment of maximum PV generation limits due to power quality constraints. Electr Power Energy Syst 2012; 42:285 98.
[13]. Pena -Alzola R, Liserre-M, Blaabjerg F,-Sebastian R, Dannehl J, Fuchs FW. Analysis of the passive damping losses in lcl-filter-based grid converters. IEEE Trans Power Electron 2013; 28:2642–6.
[14]. M.S.-At Cheikh, C. Larbes, G. F. “Maximum-power point-tracking using a fuzzy logic-control scheme”, Revue des energies-Renouvelables, Vol. 10, 2007, pp. 387-395.
[15]. Salas-V, Olıas E,-Barrado A, Lazaro A. Review of the maximum power point tracking algorithms for stand-alone photovoltaic systems. Solar Energy Materials & Solar Cells 2006; 90:1555–78.
[16]. EsramT,-Chapman PL. Comparison-of photo-voltaic array maximum-power point tracking methods-IEEE Transactions on Energy Conversion June 2007;22(2).
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 453-458, December 2019
With the increasing technological advances, the global energy needs are increasing exponentially. The ever increasing demand of electricity has compelled generation sector to highly depend on fossil based fuel but the irony is that the fossil fuel is not only costly but also pose hazard to environment. Therefore, shift towards Renewable Energy (RE) is vital for every country. Currently, RE sector in Pakistan is underdeveloped though some projects have been initiated in Pakistan to decrease reliance on fossil fuel and to lessen the energy shortage in Pakistan. Globally, many countries like Germany and China are heavily investing in renewable energy. Hence, it is important to know the status of renewable energy project growth in Pakistan in comparison to other countries. The proposed methodology aims to find the growth of RE in Pakistan energy mix in comparison to bench mark country as China, Germany, India and Saudi Arabia. This is done to understand the current progress of Pakistan in expanding RE projects, against certain developed and under developed counties. For this study, solar, wind and small micro hydro sectors of Pakistan has been considered. After analysis, the challenges and way forward for successful integration of RE in Pakistan is put forth by this study.. The results of this study will help the policy makers of Pakistan in choosing the right energy resource which is not only cost effective but also environmental friendly. This will help Pakistan in ensuring economic energy projects along with mitigation of greenhouse emissions.
[1] M. Kamran, “Current status and future success of renewable energy in Pakistan,” Renewable and Sustainable Energy Reviews, vol. 82. Elsevier Ltd, pp. 609–617, 2018
[2] G. Das, M. Aslam, H. Rahman, R. Samoo, N. Hussain, and K. Harijan, “Overcoming electricity crisis in Pakistan : A review of sustainable electricity options,” Renew. Sustain. Energy Rev., vol. 72, no. January, pp. 734–745, 2017.
[3] O. Rauf, S. Wang, P. Yuan, and J. Tan, “An overview of energy status and development in Pakistan,” Renewable and Sustainable Energy Reviews. 2015.
[4] S. A. Ur Rehman, Y. Cai, N. H. Mirjat, G. Das Walasai, I. A. Shah, and S. Ali, “The future of sustainable energy production in Pakistan: A system dynamics-based approach for estimating hubbert peaks,” Energies, vol. 10, no. 11, 2017.
[5] M. Ragazzi, M. Maniscalco, V. Torretta, N. Ferronato, and E. C. Rada, “Anaerobic digestion as sustainable source of energy: A dynamic approach for improving the recovery of organic waste,” Energy Procedia, vol. 119, pp. 602–614, 2017.
[6] M. K. Farooq and S. Kumar, “An assessment of renewable energy potential for electricity generation in Pakistan,” Renew. Sustain. Energy Rev., vol. 20, pp. 240–254, 2013.
[7] M. S. Malkani, A review of coal and water resources of Pakistan, vol. 31. 2012.
[8] A. Hepbasli and Z. Alsuhaibani, “A key review on present status and future directions of solar energy studies and applications in Saudi Arabia,” Renew. Sustain. Energy Rev., vol. 15, no. 9, pp. 5021–5050, 2011.
[9] U. K. Mirza, M. Mercedes Maroto-Valer, and N. Ahmad, “Status and outlook of solar energy use in Pakistan,” Renew. Sustain. Energy Rev., vol. 7, no. 6, pp. 501–514, 2003.
[10] J. C. Godenzzi, “No 主観的健康感を中心とした在宅高齢者における 健康関連指標に関する共分散構造分析Title,” vol. XX, no. 1990, pp. 317–331, 1996.
[11] “Pakistan Meteorological department.” [Online]. Available: http://www.pmd.gov.pk/wind/Wind_Project_files/Page767.html.
[12] M. Kamran, “Current status and future success of renewable energy in Pakistan,” Renew. Sustain. Energy Rev., vol. 82, no. September 2017, pp. 609–617, 2018.
[13] M. Carolin Mabel and E. Fernandez, “Growth and future trends of wind energy in India,” Renew. Sustain. Energy Rev., vol. 12, no. 6, pp. 1745–1757, 2008.
[14] X. Changliang and S. Zhanfeng, “Wind energy in China: Current scenario and future perspectives,” Renew. Sustain. Energy Rev., vol. 13, no. 8, pp. 1966–1974, 2009.
[15] C. W. E. Association., “Status and development of China wind industry,” 2006. [Online]. Available: http://www.crein.org.cn.
[16] David K., “A method for developing geographic–economic wind supply curves: China case study.” 2008.
[17] Q. Hang, Z. Jun, Y. Xiao, and C. Junkui, “Prospect of concentrating solar power in China — the sustainable future,” 2008.
[18] K. Kapoor, K. K. Pandey, A. K. Jain, and A. Nandan, “Evolution of solar energy in India: A review,” Renew. Sustain. Energy Rev., vol. 40, pp. 475–487, 2014.
[19] I. R. Pillai and R. Banerjee, “Renewable energy in India: Status and potential,” Energy, vol. 34, no. 8, pp. 970–980, 2009.
[20] R. Hinrichs-Rahlwes, “Renewable energy: Paving the way towards sustainable energy security. Lessons learnt from Germany,” Renew. Energy, vol. 49, pp. 10–14, 2013.
[21] N. Vandaele and W. Porter, “Renewable Energy in Developing and Developed Nations : Outlooks to 2040,” vol. 15, no. 3, pp. 1–7, 2015.
[22] S. Rafiq, H. Bloch, and R. Salim, “Determinants of renewable energy adoption in China and India : a comparative analysis Determinants of renewable energy adoption in China and India : a comparative analysis,” no. July, pp. 37–41, 2014.
[23] A. N. Menegaki, “Growth and renewable energy in Europe : A random effect model with evidence for neutrality hypothesis,” Energy Econ., vol. 33, no. 2, pp. 257–263, 2011.
[24] N. Park, S. Yun, and E. Jeon, “An analysis of long-term scenarios for the transition to renewable energy in the Korean electricity sector,” Energy Policy, vol. 52, pp. 288–296, 2013.
[25] L. Dusonchet and E. Telaretti, “Comparative economic analysis of support policies for solar PV in the most representative EU countries,” Renew. Sustain. Energy Rev., vol. 42, pp. 986–998, 2015.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 448-452, December 2019
In this research work, we have modeled and analyzed an existing 500 KV power station located at Shiekh Muhammadi, Peshawar in ETAP, using the actual real time data taken carefully for simulation in order to improve the voltage profile of the system using different techniques. It was revealed that voltage profiles of most of the buses are far below the nominal values with high losses causing considerable voltage drop at the bus. The optimization was very carefully performed by analyzing each simulation results in light of classical Newton Raphson technique in order to get the best possible optimized value without going through tedious iterations. Reactive power compensation using Static Capacitor Banks was used for voltage profile improvement of the power system. After performing optimization through above techniques, the voltages of all the buses including those with previously critical under voltage conditions, experienced boost in voltage to the nominal value with increased in real power supplied, thus improving the overall efficiency of the system.
[1] L. Grigsby Leonard. Power System. New York: CRC Press, 2006
[2] J.GRAINGER and D.STEVENSON. Power System Analysis. London: McGraw-Hill, 1994.
[3] Rohit Kapahi “Load Flow Analysis of 132 kV substation using ETAP Software” International Journal of Scientific & Engineering Research Volume 4, Issue 2, February-2013 ISSN 2229-5518.
[4] Rana Abdul Jabbar Khan, Muhammad Junaid, Muhammad Mansoor Asgher “Analyses and Monitoring of 132 kV Grid using ETAP Software” 2009 - ieeexplore.ieee.org.
[5] Vivek Raveendran, Sumit Tomar “Modeling, Simulation, Analysis and Optimisation of a Power System Network- Case Study” International Journal of Scientific & Engineering Research Volume 3, Issue 6, June-2012.
[6] Folorunso O.1, Osuji C.C.1, Ighodalo O.S.2 “Enhancement of Power System Voltage Stability with the Aid of Reactive/Capacitive Power Switching Mechanism (A Case Study of Oweeri Transmission Company of Nigeria)” Received: September 4, 2014, Accepted: October 8, 2014, Published: October 8, 2014.
[7] Pravin Chopade1 and Dr.Marwan Bikdash “Minimizing Cost and Power lossby Optimal Placement of Capacitor using ETAP” 978-1-4244-9593-1/11/$26.00 ©2011 IEEE.
[8] S Yunus, Y I Rahmi, R Nazir, Aulia, and U G S Dinata “Static VAR compensator for improving voltage profiles and transmission losses: Case study in Batam”, Conference on Innovation in Technology and Engineering Science, 2019.
[9] D.Mc.Donald. Electric Power Substations Engineering. New York: CRC Press, 2006.
[10] V.K Mehta and Rohit Mehta. Principals of Electric Power Systems. Delhi: Revised Edition2008.
[11] Kiran Natkar, Naveen Kumar “Design Analysis of 220/132 KV Substation Using ETAP” IRJET Volume: 02 Issue: 03 | June-2015
[12] C. J. Soni, P. R. Gandhi, S.M.Takalkar “Design and analysis of 11 KV Distribution System using ETAP Software” 2015 INTERNATIONAL CONFERENCE ON COMPUTATION OF POWER, ENERGY, INFORMATION AND COMMUNICATION.
[13] J. A. Michline Rupa, S. Ganesh “Power Flow Analysis for Radial Distribution” World Academy of Science, Engineering and Technology International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering Vol: 8, No: 10, 2014.
[14] Guneet Kour1, G. S. Brar1, Jaswanti Dhiman2, “Improvement by Voltage Profile by Static Var Compensators in Distribution Substation”, International Journal of Instrumentation Science 2012, 1(2): 21-24 DOI: 10.5923/j.instrument.20120102.03.
[15] Divesh Kumar1*, Amritpal Singh1 and Satish Kansal2, “To Improve the Voltage Profile of Distribution System with the Optimal Placement of Capacitor”, Indian Journal of Science and Technology, Vol 10(31), DOI: 10.17485/ijst/2017/v10i31/113897, August 2017.
[16] L.Ramesh, S.P.Chowdhury, S.Chowdhury, A.A.Natarajan, C.T.Gaunt, “Minimization of Power Loss in Distribution Networks by Different Techniques”, World Academy of Science, Engineering and Technology International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering Vol:3, No:4, 2009.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 445-447, December 2019
The increasing trend in the photvoltaic technology ask not only for efficient photvoltaic technology but also requires the best utilization of the solar power. As many factor effecting the performance of photvoltaic system such as Temperature, Dust depositon, Humidity, Tilt angle, wind speed. So a qualitative study is carried out to summarize the effect of these factors. Among all these temperature is the main culprit in degrading the performance of the Photovoltaic System. Due to dust deposition slightly reduce the open circuit voltage of the system while it significantly reduce the short circuit current and hence affecting the performance. Humidity has also negative impact on the performace of the PV system. Similar with increase in tilt angle the ability of the system to receive maximum irradiance decrease but it has the advantage of reducing the dust deposited on the photvolataic panel. Among all the parameters wind speed has positive impact on the performance of the system as it reduce temperature, dust deposition, humidity and hence improve the performance of the system.
[1] Shariff, Farihah, Nasrudin Abd Rahim, and Hew Wooi Ping. "Photovoltaic remote monitoring system based on GSM." 2013 IEEE Conference on Clean Energy and Technology (CEAT). IEEE, 2013.
[2] Goswami, D. Yogi, et al. "New and emerging developments in solar energy." Solar energy 76.1-3 (2004): 33-43
[3] Singh, Girish Kumar. "Solar power generation by PV (photovoltaic) technology: A review." Energy 53 (2013): 1-13.
[4] Jordan, Dirk C., and Sarah R. Kurtz. "Photovoltaic degradation rates—an analytical review." Progress in photovoltaics: Research and Applications 21.1 (2013): 12-29
[5] Meral, Mehmet Emin, and Furkan Dincer. "A review of the factors affecting operation and efficiency of photovoltaic based electricity generation systems." Renewable and Sustainable Energy Reviews 15.5 (2011): 2176-2184.
[6] Bhalchandra, V. Chikate, and Y. A. Sadawarte. "The factors affecting the performance of solar cell." International Journal of Computer Applications, International Conference on Quality Up-gradation in Engineering, Science and Technology. 2015.bstrate interface,”
[7] Skoplaki , Elisa, and John A. Palyvos. "On the temperature dependence of photovoltaic module electrical performance: A review of efficiency/power correlations." Solar energy 83.5 (2009): 614-624
[8] Gwandu, B. A. L., and D. J. Creasey. "Humidity: a factor in the appropriate positioning of a photovoltaic power station." Renewable Energy 6.3 (1995): 313-316.
[9] Hussein, H. M. S., G. E. Ahmad, and H. H. El-Ghetany. "Performance evaluation of photovoltaic modules at different tilt angles and orientations." Energy conversion and management 45.15-16 (2004): 2441-2452.
[10] Kacira, Murat, et al. "Determining optimum tilt angles and orientations of photovoltaic panels in Sanliurfa, Turkey." Renewable energy 29.8 (2004): 1265-1275.
[11] Kaldellis, J. K., and M. Kapsali. "Simulating the dust effect on the energy performance of photovoltaic generators based on experimental measurements." Energy 36.8 (2011): 5154-5161
[12] Meral, Mehmet Emin, and Furkan Dincer. "A review of the factors affecting operation and efficiency of photovoltaic based electricity generation systems." Renewable and Sustainable Energy Reviews 15.5 (2011): 2176-2184.
[13] Tin Tai. "A review on photovoltaic/thermal hybrid solar technology." Applied energy 87.2 (2010): 365-379.
[14] Dirk C., and Sarah R. Kurtz. "Photovoltaic degradation rates—an analytical review." Progress in photovoltaics: Research and Applications 21.1 (2013): 12-29.
[15] Lineykin, Simon, Moshe Averbukh, and Alon Kuperman. "An improved approach to extract the single-diode equivalent circuit parameters of a photovoltaic cell/panel." Renewable and Sustainable Energy Reviews 30 (2014): 282-289.
[16] Sera, Dezso, Remus Teodorescu, and Pedro Rodriguez. "PV panel model based on datasheet values." 2007 IEEE international symposium on industrial electronics. IEEE, 2007.
Gökmen, Nuri, et al. "Investigation of wind speed cooling effect on PV panels in windy locations." Renewable Energy 90 (2016): 283-290.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 12, PP. 439-444, December 2019
Identification of traffic accident spots play a pivotal role in planning of roads and application of effective strategies in order to minimize the traffic accidents. This study puts into use the spatial distribution of the traffic accidents scattered throughout the area using spatial analysis and statistical approaches. The purpose of this research study is to analyze the traffic accidents occurring in the Hayatabad area of Peshawar. The fundamental objective of this study is to detect accidents hotspot in an observed area by a complex statistical algorithm. A methodology was developed in ArcGIS 10.2 to analyze the spatial patterns of traffic accidents and to identify hotspots. This study has conducted NNHA spatial clustering method in CrimeSTAT for the identification of hotspot clusters for accidents points in ArcGIS. Moreover, based on the detected hotspots, spatio-temporal tool like Kernel Density Estimation (KDE) analysis was performed in Crime STAT to create a temporal map of RTAs hotspots in ArcGIS. A geostatistical method known as Kriging Interpolation method (KI) was also used to assess the results computed by KDE. The results indicated that the roundabouts located in this area are the major hotspot of accidents, which includes Bagh-e-Naran roundabout, Phase-6 roundabout, Tatara Park roundabout and Jamrud road. Comparison of KDE and KI was performed and it was found that KI outperforms KDE in identifying hotspots. It has been concluded that these hotspots lacked the basic traffic controlling devices, which are necessary for controlling the speed and converging or merging of vehicles at these locations.
[1] Ahmed, Aizaza. "Road safety in Pakistan." National Road Safety Secretariat, Islamabad, 142, 2007.
[2] Chen, Yen-Chi. "A tutorial on kernel density estimation and recent advances." Biostatistics & Epidemiology 1.1, 161-187, 2017.
[3] Chainey, Spencer, and Jerry Ratcliffe. GIS and crime mapping. John Wiley & Sons, 2013
[4] Gudes, Ori, and Richard Varhol. "Using a spatial analysis approach to investigate Articulated Heavy Vehicle." Journal of Transport Geography 31, 64-71. 2015
[5] Goovaerts, Pierre. Geostatistics for natural resources evaluation. Oxford University Press on Demand, 1997.
[6] Hart, Timothy C., and Paul A. Zandbergen. "Effects of data quality on predictive hotspot mapping." Final report submitted to the National Institute of Justice 1, 2012.
[7] Kazmi, Jamil H., and Salman Zubair. "Estimation of vehicle damage cost involved in road traffic accidents in Karachi, Pakistan: a geospatial perspective." Procedia engineering 77, 70-78, 2014
[8] McCullagh, Michael J. "Detecting hotspots in time and space." ISG06 349 : 1-17, 2006
[9] Nakaya, Tomoki, and Keiji Yano. "Visualising crime clusters in a space‐time cube: An exploratory data‐analysis approach using space‐time kernel density estimation and scan statistics." Transactions in GIS 14.3: 223-239, 2010
[10] Prasannakumar, V., et al. "Spatio-temporal clustering of road accidents: GIS based analysis and assessment." Procedia-Social and Behavioral Sciences 21, 317-325, 2011
[11] World Health Organization. Global status report on road safety 2015. World Health Organization, 2015.
[12] World Health Organization. Global status report on road safety 2018. World Health Organization, 2018.
[13] Razzak, Junaid Abdul, et al. "A successful model of road traffic injury surveillance in a developing country: process and lessons learnt." BMC public health 12.1, 357.2012
[14] Rosenblatt, Murray. "Remarks on some nonparametric estimates of a density function." The Annals of Mathematical Statistics 832-837, 1956
[15] Shafabakhsh, Gholam Ali, Afshin Famili, and Mohammad Sadegh Bahadori. "GIS-based spatial analysis of urban traffic accidents: Case study in Mashhad, Iran." Journal of traffic and transportation engineering (English edition) 4.3, 290-299, 2017
[16] Thakali, Lalita, Tae J. Kwon, and Liping Fu. "Identification of crash hotspots using kernel density estimation and kriging methods: a comparison." Journal of Modern Transportation23.2, 93-106, 2015
[17] Van Patten, Isaac T., Jennifer McKeldin-Coner, and Deana Cox. "A microspatial analysis of robbery: Prospective hot spotting in a small city." Crime Mapping: A journal of research and practice 1.1, 7-32., 2009
[18] Jia, Ruo, Anish Khadka, and Inhi Kim. "Traffic crash analysis with point-of-interest spatial clustering." Accident Analysis & Prevention 121, 223-230, 2018
[19] Romano, Benjamin, and Zhe Jiang. "Visualizing traffic accident hotspots based on spatial-temporal network kernel density estimation." Proceedings of the 25th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems. ACM, 2017.
[20] Rushton, G., and C. Tiwari. "Spatial filtering/kernel density estimation.", 359-364. 2009
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 11, PP. 414-419, November 2019
Pakistan is suffering from acute energy crisis since last decades. There is a big gap between power supply and demand and the shortfall is about 5000 MW per day. This shortfall is badly affecting all sectors which consumes electricity like residential, commercial, industrial and agriculture etc. Among the total energy about 43 % is consumed by the residential buildings. This high consumption needs to be minimized so finding desirable and effective ways to minimize the energy consumption of existing residential buildings and to propose strategies that are energy efficient is the aim of this research work. Each household has its own energy consumption pattern which is affected by the socio-economic conditions, number of occupants, the age group and gender. Thus, figuring out a generalized procedure for the transformation of residential buildings into the energy efficient building becomes very challenging. The proposed methodology aims at optimizing the energy consumption of residential buildings and finding a generalized procedure that can be adopted to transform any residential building into a low energy building. The test site selected for the proposed work is situated at canal town Peshawar which is a residential building. To lower down the electricity consumption of the selected building different insulation materials and energy efficient equipment’s along with different retrofitting strategies are analyzed in this research work. The financial analysis is also carried out based on the KWH savings, with an improvement in energy consumption up to 30%.
[1] Rashid, Tanzeel-ur. Energy Modeling and Policy Analysis of Pakistan’s Residential Energy System. Diss. University of Engineering and Technology, Taxila, 2016.
[2] K. kiani, DAWN NEWS, May 2017.
[3] Valasai, Gordhan Das, et al. "Overcoming electricity crisis in Pakistan: A review of sustainable electricity options." Renewable and Sustainable Energy Reviews 72 (2017): 734-745.
[4] Balaras, Constantinos A., et al. "Heating energy consumption and resulting environmental impact of European apartment buildings." Energy and buildings 37.5 (2005): 429-442.C. Balaras,
[5] Asimakopoulos, D. A., et al. "Modelling the energy demand projection of the building sector in Greece in the 21st century." Energy and Buildings 49 (2012): 488-498.
[6] Zhang, Tao, Peer-Olaf Siebers, and Uwe Aickelin. "Modelling electricity consumption in office buildings: An agent based approach." Energy and Buildings 43.10 (2011): 2882-2892.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 11, PP. 420-430, November 2019
The exhaustion of the fossil fuel supply of the world is an understood eventuality, considering the pace at which these resources are being exploited the world over. More so when the global energy requirements are increasing without much interruption; suffice to say the current state of operations in the energy arena is not going to last long. Alternative energy resources, in this worldview, provide an auspicious avenue of fulfilling the burgeoning human thirst for energy. The impact of these alternative energy resources utilization will be twofold: the satiation of the energy demand, and the culmination of the global warming resulting from the incessant use of the fossil fuels. The urge for alternative resources of energy is key to survival and demand of future. In comparison to all the alternative resources of energy, Hydro power present better results in terms of efficiency and long term viability.The viability of Hydro Power is subject to its high initial cost and major construction with no return in the initial phase of construction. This work is aimed at presenting the technical and financial aspects of Micro-Hydro power. The financial assessment is based on the Net Present Value (NPV), Internal Rate of Return and Benefit to Cost Ratio (B/C). Apart from the social benefits to the residents and improving the quality of life, the financial feasibility is tested on the basis the above parameters and results shows the micro hydro are feasible in the lights of mentioned parameters. The proposition is tested and implemented on three different case studies, i.e. Ajmera Hydro power plant, Bersa Payen and Sheri Dumrai HPP. The data shows successful results in the all the mentioned cases.
[1] N. E. F. Bloomberg, "New energy outlook 2018," ed: Informs BNEF). Disponible en: http://about. bnef. com/content/uploads/sites …, 2016.
[2] L. Yang, H. Yan, and J. C. Lam, "Thermal comfort and building energy consumption implications–a review," Applied energy, vol. 115, pp. 164-173, 2014.
[3] A. Amin, N. Muhammad, S. A. Maoz, A. Basit, and T. Ahmad, "A Socio-Technical Survey of Micro Hydro Power Projects in District Shangla, Pakistan," 2018.
[4] N. Qureshi, "Exploring the energy consumption environmental impacts and economic consequences of," 2018.
[5] M. A. Sheikh, "Energy and renewable energy scenario of Pakistan," Renewable and Sustainable Energy Reviews, vol. 14, pp. 354-363, 2010.
[6] A. Raheem, S. A. Abbasi, A. Memon, S. R. Samo, Y. Taufiq-Yap, M. K. Danquah, et al., "Renewable energy deployment to combat energy crisis in Pakistan," Energy, Sustainability and Society, vol. 6, p. 16, 2016.
[7] M. K. Farooq and S. Kumar, "An assessment of renewable energy potential for electricity generation in Pakistan," Renewable and Sustainable Energy Reviews, vol. 20, pp. 240-254, 2013.
[8] M. Shahbaz, N. Loganathan, M. Zeeshan, and K. Zaman, "Does renewable energy consumption add in economic growth? An application of auto-regressive distributed lag model in Pakistan," Renewable and Sustainable Energy Reviews, vol. 44, pp. 576-585, 2015
[9] S. Z. Farooqui, "Prospects of renewables penetration in the energy mix of Pakistan," Renewable and Sustainable Energy Reviews, vol. 29, pp. 693-700, 2014.
[10] F. Wagner, "The complex story of energy transition—an introduction," in EPJ Web of Conferences, 2018, p. 00002.
[11] W. Uddin, S. Hussain, K. Zeb, M. A. Dildar, Z. Ullah, . U. Khalil, et al., "Energy Scenario and Potential of Hydroelectric Power in Pakistan," in 2018 International Conference on Power Generation Systems and Renewable Energy Technologies (PGSRET), 2018, pp. 1-6.
[12] S. Stiebert, "Pakistan Low Carbon Scenario Analysis," 2016.
[13] A. Hussain and Z. Gillani, "Fulfilling environment related international commitments through implementation of multilateral environmental agreements (meas) in pakistan," A scientific journal of COMSATS–Science Vision, vol. 18, pp. 1-2, 2014.
[14] O. Paish, "Small hydro power: technology and current status," Renewable and sustainable energy reviews, vol. 6, pp. 537-556, 2002.
[15] M. S. Rahman, I. M. Nabil, and M. M. Alam, "Global analysis of a renewable micro hydro power generation plant," in AIP Conference Proceedings, 2017, p. 020014.
[16] M. Bilal, R. Ullah, A. Ali, M. H. Khan, and Z. Ullah, "Wheeling hybrid energy system for industries," in 2016 International Conference on Computing, Electronic and Electrical Engineering (ICE Cube), 2016, pp. 169-174.
[17] M. H. Baloch, S. T. Chauhdary, D. Ishak, G. S. Kaloi, M. H. Nadeem, W. A. Wattoo, et al., "Hybrid energy sources status of Pakistan: An optimal technical proposal to solve the power crises issues," Energy Strategy Reviews, vol. 24, pp. 132-153, 2019.
[18] H. A. Sher, A. F. Murtaza, K. E. Addoweesh, and M. Chiaberge, "Pakistan’s progress in solar PV based energy generation," Renewable and Sustainable Energy Reviews, vol. 47, pp. 213-217, 2015.
[19] B. K. Sovacool, "The political economy of energy poverty: A review of key challenges," Energy for Sustainable Development, vol. 16, pp. 272-282, 2012.
[20] W. Uddin, K. Zeb, A. Haider, B. Khan, S. ul Islam, M. Ishfaq, et al., "Current and future prospects of small hydro power in Pakistan: A survey," Energy Strategy Reviews, vol. 24, pp. 166-177, 2019.
[21] M. Umar and A. Hussain, "Micro hydro power: a source of sustainable energy in rural communities: economic and environmental perspectives," The Pakistan Development Review, pp. 487-504, 2015.
[22] A. Hussain, G. K. Sarangi, A. Pandit, S. Ishaq, N. Mamnun, B. Ahmad, et al., "Hydropower development in the Hindu Kush Himalayan region: Issues, policies and opportunities," Renewable and Sustainable Energy Reviews, vol. 107, pp. 446-461, 2019.
[23] M. A. Khan, "Policy review and recommendations on the promotion of renewable energy and energy efficiency," 2016.
[24] D. Moulick, B. Chowardhara, and S. K. Panda, "Agroecotoxicological Aspect of Arsenic (As) and Cadmium (Cd) on Field Crops and its Mitigation: Current Status and Future Prospect," in Plant-Metal Interactions, ed: Springer, 2019, pp. 217-246.
[25] P. Purohit, "Small hydro power projects under clean development mechanism in India: A preliminary assessment," Energy Policy, vol. 36, pp. 2000-2015, 2008
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 11, PP. 406-413, November 2019
The aim of this paper is to provide the software-based materials selection approach for the micro channel heat exchanger for high-temperature industrial waste heat recovery. Industrial heat processing and heat recovery places increasing demand for material performance in extreme conditions. These extreme conditions accelerate the materials degradation in turn leading to performance and efficiency reduction. Therefore the development of new compatible materials demand material qualification for the miniaturized technology to function over a long period of time with full efficiency. This paper proposes methodology for the material identification and selecting appropriate material for the micro channel heat exchanger to recover high-temperature (>500℃) industrial waste heat. Thermally stable materials such as aluminum nitride, silicon carbide, alumina, tungsten carbide, tungsten alloys, and nickel and TZM alloys were observed to perform exceptionally well in extreme condition. Thus silicon carbide, aluminum nitride and molybdenum TZM alloys were selected as the most promising materials for micro channel heat exchanger recover high-temperature (500-750 ℃) waste heat from different industries.
[1] Tuckerman, D. B. and R. F. W. Pease (1981). "High-performance heat sinking for VLSI." IEEE Electron device letters 2(5): 126-129.
[2] Dixit, T. and I. Ghosh (2015). "Review of micro-and mini-channel heat sinks and heat exchangers for single phase fluids." Renewable and Sustainable Energy Reviews 41: 1298-1311.
[3] Knight, R. W., et al. (1992). "Heat sink optimization with application to microchannels." IEEE Transactions on Components, Hybrids, and Manufacturing Technology 15(5): 832-842.
[4] Lee, J., et al. (2005). "Optimum design of cold-formed steel channel beams using micro Genetic Algorithm." Engineering Structures 27(1): 17-24.
[5] Riera, S., et al. (2015). "Stepwise varying width microchannel cooling device for uniform wall temperature: Experimental and numerical study." Applied Thermal Engineering 78: 30-38.
[6] Harms, T. M., et al. (1999). "Developing convective heat transfer in deep rectangular microchannels." International Journal of Heat and Fluid Flow 20(2): 149-157.
[7] Mohammed, H., et al. (2011). "Heat transfer and fluid flow characteristics in microchannels heat exchanger using nanofluids: a review." Renewable and Sustainable Energy Reviews 15(3): 1502-1512.
[8] Segre, G. and A. Silberberg (1962). "Behaviour of macroscopic rigid spheres in Poiseuille flow Part 2. Experimental results and interpretation." Journal of fluid mechanics 14(1): 136-157.
[9] Kan, M., et al. (2015). "Plate heat exchangers as a compact design and optimization of different channel angles." Acta Physica Polonica A 12: 49-52.
[10] Peng, X. and G. Peterson (1996). "Convective heat transfer and flow friction for water flow in microchannel structures." International journal of heat and mass transfer 39(12): 2599-2608
[11] Wu, H. and P. Cheng (2003). "An experimental study of convective heat transfer in silicon microchannels with different surface conditions." International journal of heat and mass transfer 46(14): 2547-2556.
[12] Jiang, P.-X., et al. (2001). "Thermal–hydraulic performance of small scale micro-channel and porous-media heat-exchangers." International journal of heat and mass transfer 44(5): 1039-1051.
[13] Westphalen, D. and S. Koszalinski (1999). "Energy consumption characteristics of commercial building HVAC systems. Volume II: Thermal Distribution, auxiliary equipment, and ventilation." Arthur D. Little Inc (ADLI) 20(October): 33745-33700.
[14] Kandlikar, S., et al. (2005). Heat transfer and fluid flow in minichannels and microchannels, elsevier.
[15] Pettersen, J., et al. (1998). "Development of compact heat exchangers for CO2 air-conditioning systems." International journal of refrigeration 21(3): 180-193.
[16] Han, Y., et al. (2012). "A review of development of micro-channel heat exchanger applied in air-conditioning system." Energy Procedia 14: 148-153.
[17] Leland, J. E. and R. Ponnappan (2001). Method of making micro channel heat pipe having corrugated fin elements, Google Patents.
[18] [18] Harris, C., et al. (2000). "Design and fabrication of a cross flow micro heat exchanger." Journal of Microelectromechanical Systems 9(4): 502-508.
[19] Min, J. K., et al. (2009). "High temperature heat exchanger studies for applications to gas turbines." Heat and mass transfer 46(2): 175.
[20] Sommers, A., et al. (2010). "Ceramics and ceramic matrix composites for heat exchangers in advanced thermal systems—a review." Applied Thermal Engineering 30(11-12): 1277-1291.
[21] Meng, J.-H., et al. (2016). "Performance investigation and design optimization of a thermoelectric generator applied in automobile exhaust waste heat recovery." Energy Conversion and Management 120: 71-80.
[22] Baek, S., et al. (2010). Micro channel heat exchanger for LNG-FPSO application. The Ninth ISOPE Pacific/Asia Offshore Mechanics Symposium, International Society of Offshore and Polar Engineers.
[23] Thonon, B. and E. Breuil (2001). Compact heat exchanger technologies for the HTRs recuperator application.
[24] Kandlikar, S. G. (2005). "High flux heat removal with microchannels—a roadmap of challenges and opportunities." Heat transfer engineering 26(8): 5-14.
[25] Walpole, J. N. and L. J. Missaggia (1992). Microchannel heat sink with alternating flow directions, Google Patents.
[26] Reuse, P., et al. (2004). "Hydrogen production for fuel cell application in an autothermal micro-channel reactor." Chemical Engineering Journal 101(1-3): 133-141.
[27] Li, Q., et al. (2011). "Compact heat exchangers: A review and future applications for a new generation of high temperature solar receivers." Renewable and Sustainable Energy Reviews 15(9): 4855-4875.
[28] Silvestri, S. and E. Schena (2012). "Micromachined flow sensors in biomedical applications." Micromachines 3(2): 225-243.
[29] Qu, W. and I. Mudawar (2002). "Experimental and numerical study of pressure drop and heat transfer in a single-phase micro-channel heat sink." International journal of heat and mass transfer 45(12): 2549-2565.
[30] Liu, X. and J. Yu (2016). "Numerical study on performances of mini-channel heat sinks with non-uniform inlets." Applied Thermal Engineering 93: 856-864.
[31] Del Col, D., et al. (2011). "Effect of cross sectional shape during condensation in a single square minichannel." International journal of heat and mass transfer 54(17-18): 3909-3920.
[32] Brandner, J., et al. (2006). "Concepts and realization of microstructure heat exchangers for enhanced heat transfer." Experimental thermal and fluid science 30(8): 801-809.
[33] [33] David, M. P., et al. (2011). "Hydraulic and thermal characteristics of a vapor venting two-phase microchannel heat exchanger." International journal of heat and mass transfer 54(25-26): 5504-5516.
[34] M Kan, O Ipek, B et al. (2015) "Plate heat exchangers as a compact design and optimization of different channel angles" GurelActa Physica Polonica A 12, 49-52
[35] Liu, N., et al. (2016). "Experimental investigation of condensation heat transfer and pressure drop of propane, R1234ze (E) and R22 in minichannels." Applied Thermal Engineering 102: 63
[36] Shen, S., et al. (2006). "Flow and heat transfer in microchannels with rough wall surface." Energy Conversion and Management 47(11-12): 1311-1325.
[37] Peng XF, Peterson GP. The effect of thermo fluid and geometrical parameters on convection of liquids through rectangular micro channels. Int J Heat Mass Transfer 1995; 38: 755–8.
[38] Peng XF, Peterson GP. Convective heat transfer and flow friction for water flow in micro channel structures. Int J Heat Mass Transfer 1996; 39: 2599–608
[39] P Chamarthy, SV Garimella, ST Wereley - Measurement of the temperature non-uniformity in a micro channel heat sink using micro-scale laser-induced fluorescence of Heat and Mass Transfer, 2010.
[40] P Wu, WA Little - Measurement of the heat transfer characteristics of gas flow in fine channel heat exchangers used for micro miniature refrigerators Cryogenics, 1984.
[41] Khare, S., Dell’Amico, M., Knight, C., & McGarry, S. (2013). Selection of materials for high temperature sensible energy storage. Solar Energy Materials and Solar Cells, 115, 114–122. doi:10.1016/j.solmat.2013.03.009.
[42] Barreneche, C., Navarro, M. E., Cabeza, L. F., & Fernández, A. I. (2015). New database to select phase change materials: Chemical nature, properties, and applications. Journal of Energy Storage, 3, 18–24. doi:10.1016/j.est.2015.08.003.
[43] Shanian, A., & Savadogo, O. (2006). A material selection model based on the concept of multiple attribute decision making. Materials & Design, 27(4), 329–337.
[44] MF Ashby, A Miller, F Rutter, C Seymour, UGK Wegst the CES Eco Selector – Background Reading – 2009[42] MF Ashby, A Miller, F Rutter, C Seymour, UGK Wegst the CES Eco Selector – Background Reading – 2009.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 11, PP. 399-405, November 2019
This paper carries out a comprehensive numerical investigation of turbocharger high-pressure ratio centrifugal compressor impeller. The aim is to study the effect of varying mass flow rate on the pressure ratio and efficiency from stall to choke using (3D) numerical simulations. The transonic SRV2 compressor developed by DLR (German Aerospace Center) has been used as the test case in this study. Numerical simulations have been performed using Reynolds Averaged Navier-Stokes (RANS) based k-ɛ model to predict turbulence. Y-plus is kept 35 for the structured mesh near the boundaries. In first part, calculations were carried out for design speed of 50,000 1/min to study the suitability of ANSYS CFX in the design procedure and compared the results with experimental data and four other (3D) solvers. The numerical simulations showed that ANSYS CFX over predicts the experimental data by 9% in this compressor. The second part describes the effect of vaneless diffuser exit width on performance parameters of centrifugal compressor at design high rotational speed, which shows that decreasing vaneless diffuser exit width increases pressure ratio, isentropic efficiency and operating range from stall to choke.
[1] S. N. Danish, Chaochen Ma, and Y. Ce, “The influence of tip clearance on centrifugal compressor stage of a turbocharger,” Proc. 4th WSEAS Int. Conf. Fluid Mech. Aerodyn. Elounda, Greece, vol. 2006, pp. 6–11, 2006.
[2] G. Eisenlohr et al., “Gt-2002-30394 Investigations of the Flow Through a High,” pp. 1–9, 2002.
[3] G. Eisenlohr, P. Dalbert, H. Krain, H. Pröll, F.-A. Richter, and K.-H. Rohne, “Analysis of the Transonic Flow at the Inlet of a High Pressure Ratio Centrifugal Impeller,” p. V001T01A007, 2014.
[4] A. Jaatinen-Värri, P. Röyttä, T. Turunen-Saaresti, and A. Grönman, “Experimental study of centrifugal compressor vaneless diffuser width,” J. Mech. Sci. Technol., vol. 27, no. 4, pp. 1011–1020, 2013.
[5] A. S. Rathore and K. B. Ravichandrakumar, “International Journal of Aerospace and Mechanical Engineering PARAMETRIC STUDY ON IMPELLER EXIT BLADE WIDTH VARIATION ON CENTRIFUGAL COMPRESSOR International Journal of Aerospace and Mechanical Engineering,” vol. 4, no. 3, pp. 16–22, 2017.
[6] Q. H. Nagpurwala, “Numerical Investigation of the Effect of Exit Width Trim on the Performance of a Centrifugal Compressor Impeller Numerical Investigation of the Effect of Exit Width Trim on the Performance of a Centrifugal Compressor Impeller,” no. January 2010, 2018.
[7] T. C. Siva Reddy, G. V. Ramana Murty, M. V. S. S. S. M. Prasad, and D. N. Reddy, “Experimental studies on the effect of impeller width on centrifugal compressor stage performance with low solidity vaned diffusers,” Proc. Inst. Mech. Eng. Part A J. Power Energy, vol. 221, no. 4, pp. 519–533, 2007.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 11, PP. 392-398, November 2019
Micro hydro power is considered as one of the lucrative options for electricity generation, it can work both autonomously and in Grid connected mode.Most of the MHP’s are built on obsolete technology due to which only a portion of flow is utilized for power generation. In micro hydro power plant Voltage and frequency of induction generator are not constant due to change in discharge of water.To overcome these issues technology is moving from fixed speed operation (FSO) to variable speed operations (VSO). Doubly Fed Induction Generator (DFIG) is the most suitable option for variable speed operation .In this research paper working and operation of DFIG in MHP system in Grid connected mode is observed which allow to compensate the variations in acceptable proportion while guaranteeing a good quality of electrical outputs.A control algorithm is developed which enable the stator voltage and frequency of DFIG to a constant value in spite of speed variation in driving shaft and load changes. A vector control technique is adopted for the regulation of rotor side converter (RSC) and grid side converter(GSC) to keep the voltages and frequency with in limits and also ensure the reactive power exchange with the grid according to the reference value.Operation of the established model is tested by different operating conditions in Simulink MATLAB.
[1] R. Adib, R. Coordinator, and C. Webinar, “Renewables 2015 Global Status Report Distrbuted Renewable Energy for Energy Access,” no. September, 2015.
[2] S. Breban, M. M. Radulescu, and B. Robyns, “Direct active and reactive power control of variable-speed doubly-fed induction generator on micro-hydro energy conversion system,” 19th Int. Conf. Electr. Mach. ICEM 2010, pp. 0–5, 2010.
[3] C. Mi, M. Filippa, J. Shen, and N. Natarajan, “Modeling and control of a variable-speed constant-frequency synchronous generator with brushless exciter,” IEEE Trans. Ind. Appl., vol. 40, no. 2, pp. 565–573, 2004.
[4] A. Ansel and B. Robyns, “Modelling and simulation of an autonomous variable speed micro hydropower station,” Math. Comput. Simul., vol. 71, no. 4–6, pp. 320–332, 2006.
[5]S. Breban, M. Nasser, A. Ansel, C. Saudemont, B. Robyns, and M. Radulescu, “Variable Speed Small Hydro Power Plant Connected to AC Grid or Isolated Loads,” EPE J., vol. 17, no. 4, pp. 29–36, 2008.
[6]M. B. Camara, B. Dakyo, C. Nichita, and G. Barakat, “Simulation of a doubly-fed induction generator with hydro turbine for electrical energy production,” 2009 8th Int. Symp. Adv. Electromechanical Motion Syst. Electr. Drives Jt. Symp. ELECTROMOTION 2009, no. July, pp. 1–3, 2009.
[7] S. Mpn, P. Ts, A. Hermanto, and B. Ian, “Innovative Energy & Research Electric Speed Governor for 1kw Microhydro Generator,” vol. 6, no. 2, pp. 6–9, 2017.
[8] C. P. Ion and C. Marinescu, “Autonomous micro hydro power plant with induction generator,” Renew. Energy, vol. 36, no. 8, pp. 2259–2267, 2011.
IEE Proc. - Electr. Power Appl., vol. 143, no. 5, p. 380, 1996.
[9]A. L. U. Quilisch, “Object Oriented Modelling and Simulation of Kaplan Turbines,” no. February, 2008.
[10]Z. Husain, Basic Fluid Mechanics and . Hydraulic Machines.
[11]D. Zhi and L. Xu, “Direct power control of DFIG with constant switching frequency and improved transient performance,” IEEE Trans. Energy Convers., vol. 22, no. 1, pp. 110–118, 2007.
[12]A. D. Hansen, “Overall control strategy of variable speed doubly-fed induction generator wind turbine,” Grid Integr. Electr. Syst. Wind Turbines Wind Farms, 2004.
[13]M. I. Martinez, G. Tapia, A. Susperregui, and H. Camblong, “Sliding-mode control for DFIG rotor- and grid-side converters under unbalanced and harmonically distorted grid voltage,” IEEE Trans. Energy Convers., vol. 27, no. 2, pp. 328–339, 2012.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 10, PP. 387-391, October 2019
The need for safety devices is increasing day by day in a fast-growing technology era. Many heating appliances involve oil fuel or liquefied petroleum gas burning in furnaces providing heat to the working facilities and our homes with controlled fires and careful management. The risk of blazing fire escaping from furnaces will cause potential harm and hazardous to our lives and damages to our houses. Remote acting fire valve (RAF) safeguard against the fuel being fed into the fire and prevent the total destruction by fire. The automated fire safety valve utilizes the temperature control sensor governed to minimize the risk of fire. The RAF with cut off temperature 66 ℃ or 90 ℃ depends on the model, the flow rate of 395 liters/hour with 2m head approved by BS5410. This paper demonstrates the operation, calibration, function, and Reworks of Remote Acting Fire valve (RAF), manufactured and assembled in Tesla Technologies Private limited Pakistan. RAF is a safety device designated to cut off fuels supply to heating appliances that may have malfunctioned. Failure and Reworks of RAF are the problems need to be resolved. The proposed solution to the rework problems at Tesla Private limited would be beneficial to the company and customers.
[1] Thompson, W. S. (1977). Pressure reducing fire valve, Google Patents.
[2] Northill, B. W. (1993). Fire suppression systems, Google Patents.
[3] Hilpert, B. and B. Hunziker (1987). Remote control actuating device for a valve, Google Patents.
[4] Kelada, M. I. (2000). Remote function verification of low pressure and vacuum relief devices, Google Patents.
[5] Lymberopoulos, D. (2015). Valve actuator control system and method of use, Google Patents.
[6] Stacey, M. R. (1992). Performance Tests of a Fast-acting Valve for the Driver Tubes of a Large Blast/Thermal Simulator, EG AND G IDAHO INC IDAHO FALLS.
[7] Oppenberg, R. (1981). Safety device for an oil burner, Google Patents
[8] Morse, L. H. (1936). Valve, Google Patents.
[9] Phillips, S. C. (1930). Steam-operated emergency valve for oil and gas wells, Google Patents.
[10] Smith, I. E. (1926). Oil-burner-control system, Google Patents.
[11] Grant, W. S. (1931). Oil burner, Google Patents.
[12] Buchanan, B. F. and J. R. Buchanan (1992). Combination steam and fuel oil supply and purge valve with recirculation feature, Google Patents.
[13] Kagi, T. (2006). Waste oil multi-fuel fired burner, Google Patents.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 10, PP. 379-386, October 2019
Khyber Pakhtunkhwa is considered to be one of the greenest province of Pakistan. But the province is in a great threat of deforestation as majority of the population are cutting trees rapidly in order to meet their need of cooking fuel. Majority of the rural population are using firewood as their cooking fuel as they have no access to national gas transmission line and cannot afford the LPG cylinders. Installation of domestic biogas plant is one of the alternative green solutions to this problem. This research is conducted to evaluate the overall potential of biogas from cattle manure in KPK and to carry out the multi prospect assessment of current biogas plants in KPK. Potential of biogas from cattle manure was calculated from statistical data of KPK and literature review. Questionnaires were designed to conduct survey of 15 installed biogas plants in different districts of KPK. The total potential of biogas from cattle manure in KPK was found to be 532.9 million cubic meter per year. The equivalent potential of electricity generation from biogas is 1,344200 GWh per year. FATA regions have the highest potential of biogas which is 22 percent of the total whereas district D.I. Khan has a potential of 8 percent of the total. From the results of multi prospect assessment of current biogas plants it was found that 26.67 percent of the total plants were dismantled. 60 percent of the plants were fixed dome type while 40 percent were floating type. 40 percent of the plants were funded by the government, 33.33 percent by the NGOs and 26.67 percent were constructed by user on their own finance. 100% of the user agreed that biogas helps in firewood reduction. 92.86 percent of the users complaint about the maintenance of plant as a major challenge. 64.29 percent of the users wanted storage of biogas facility in the plant. On average, Rs. 2130 per month per household were saved in energy expenditure of cooking fuel with the help of biogas. 40 percent of plants users were satisfied, 33.33 percent were highly satisfied and only 26.67 percent responded as not satisfied.
[1] F. Fatai, K and Oxley, Les and Scrimgeour, “Modelling the causal relationship between energy consumption and GDP in New Zealand, Australia, India, Indonesia, The Philippines and Thailand,” Math. Comput. Simul., vol. 64, pp. 431–445, 2004.
[2] GOP, “Pakistan Economic Survey 2018-19. Ministry of Finance, Government of Pakistan, Islamabad.,” 2019.
[3] M. of Energy, Pakistan Energy Year Book 2018, no. 2018. 2018.
[4] I. Jan and W. Akram, “Willingness of rural communities to adopt biogas systems in Pakistan: Critical factors and policy implications,” Renew. Sustain. Energy Rev., vol. 81, no. June, pp. 3178–3185, 2018.
[5] Pakistan Bureau of Statistics, “Household Integrated Economic Survey,” p. 2017, 2015.
[6] B. Pandey and S. Bajgain, “Feasibility Study of Domestic Biogas in Pakistan,” Rspn, no. July, pp. 1–38, 2007.
[7] J. Daniel-Gromke et al., “Current Developments in Production and Utilization of Biogas and Biomethane in Germany,” Chemie-Ingenieur-Technik. 2018.
[8] H. Oechsner, S. K. Khanal, and M. Taherzadeh, “Advances in Biogas Research and Application,” Bioresour. Technol., 2015.
[9] C. Sawatdeenarunat et al., “Anaerobic biorefinery: Current status, challenges, and opportunities,” Bioresource Technology. 2016.
[10] Y. Zhou et al., “A comprehensive review on densified solid biofuel industry in China,” Renewable and Sustainable Energy Reviews. 2016.
[11] M. Shan, D. Li, Y. Jiang, and X. Yang, “Re-thinking china’s densified biomass fuel policies: Large or small scale?,” Energy Policy, 2016.
[12] M. A. Sanz-Bobi, F. De Cuadra, and C. Batlle, “A review of key points of an industrial biogas plant. A European perspective,” in 2012 International Conference on Renewable Energy Research and Applications, ICRERA 2012, 2012.
[13] W. Uddin et al., “Biogas potential for electric power generation in Pakistan: A survey,” Renew. Sustain. Energy Rev., vol. 54, pp. 25–33, 2016.
[14] GOP, “Pakistan Economic Survey 2017-18. Ministry of Finance, Government of Pakistan, Islamabad.,” p. P: 13-32, 2018.
[15] J. B. Holm-Nielsen, T. Al Seadi, and P. Oleskowicz-Popiel, “The future of anaerobic digestion and biogas utilization,” Bioresour. Technol., vol. 100, no. 22, pp. 5478–5484, Nov. 2009.
[16] H. Pathak, N. Jain, A. Bhatia, S. Mohanty, and N. Gupta, “Global warming mitigation potential of biogas plants in India.,” Environ. Monit. Assess., vol. 157, no. 1–4, pp. 407–18, Oct. 2009.
[17] K. C. Surendra, D. Takara, A. G. Hashimoto, and S. K. Khanal, “Biogas as a sustainable energy source for developing countries: Opportunities and challenges,” Renewable and Sustainable Energy Reviews, vol. 31. Elsevier Ltd, pp. 846–859, 2014.
[18] B. Amigun, W. Parawira, J. K., A. O., and A. S., “Anaerobic Biogas Generation for Rural Area Energy Provision in Africa,” in Biogas, InTech, 2012.
[19] M. Lantz, M. Svensson, L. Björnsson, and P. Börjesson, “The prospects for an expansion of biogas systems in Sweden - Incentives, barriers and potentials,” Energy Policy, vol. 35, no. 3, pp. 1819–1829, 2007.
[20] J. Lorimor, W. Powers, and A. Sutton, “Manure Characteristics - Manure Management Systems Series,” p. 24, 2018.
[21] C. Karaca, “Determination of biogas production potential from animal manure and GHG emission abatement in Turkey,” Int. J. Agric. Biol. Eng., vol. 11, no. 3, pp. 205–210, 2018.
[22] Govt of Pakistan Statistics Division, “PAKISTAN LIVESTOCK CENSUS 2006,” 2006.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 10, PP. 374-378, October 2019
Power Generators of high KVA rating especially that of hydropower plant are very much prone to the ground faults. Stator ground faults are the most common winding failure in generators. During stator ground faults, short circuit currents flow from the damaged phase to ground through the stator core. Experience has shown that stator ground fault damages are proportional to phase-to-ground fault current as well as fault duration. For that reason, Generator Neutral Grounding must be appliedin order to;
Limit phase-to-ground fault current.
Provide a means of stator ground fault detection.
There are various generator grounding classes and types available. In this paper, high-resistance grounding has been chosen. High-resistance generator neutral grounding scheme based on a grounding transformer with a secondary resistor. The advantage of the distribution transformer resistor combination is that the resistor used in the secondary is of comparatively low ohmic value and of rugged construction as compared to obtaining the same result by installing a high-ohmic, low-current resistor directly in the generator neutral. This research introduces some important and applicable practices which came from few years of practical as well as theoretical studies and discussions with some national and international power system experts. The research was made on the hydro power plants installed at Tarbela generating unit. The important parameters concerning the high impedance grounding of the generator were calculated. These results will be a kind of ready references for neutral grounding transformer design calculations and analysis.
[1] M. Gilany, O. Malik and A. Megahed, "Generator stator winding protection with 100% enhanced sensitivity", International Journal of Electrical Power & Energy Systems, vol. 24, no. 2, pp. 167-172, 2002. Available: 10.1016/s0142-0615(01)00018-7.
[2] B. Ravindranath and M. Chander, Power system protection and switchgear. New Delhi: New Age International, 2011.
[3] D. Reimert, Protective relaying for power generation systems. 2017.
[4] Y. Hase and Y. Hase, Handbook of power systems engineering with power electronics applications. Hoboken, NJ: John Wiley, 2013.
[5] The 10th IET International Conference on Development in Power Systems Protection (DPSP 2010). [Stevenage, Hertfordshire]: Institution of Engineering and Technology, 2010.
[6] L. Hewitson, M. Brown and B. Ramesh, Practical power systems protection. Amsterdam: Elsevier, 2008.
[7] S. Horowitz and A. Phadke, Power system relaying. Chichester, England: Wiley/Research Studies Press, 2008.
[8] M. Kezunovic, J. Ren and S. Lotfifard, Design, modeling and evaluation of protective relays for power systems. 2015.
[9] J. Martínez-Velasco, Transient analysis of power systems. Chichester: Wiley, 2015.
[10] Y. Paithankar, Fundamentals of power system protection. Delhi: PHI Learning Private Limited, 2014.
[11] W. Rebizant, J. Szafran and A. Wiszniewski, Digital signal processing in power system protection and control. London: Springer, 2011.
[12] L. Singh, Advanced power system analysis and dynamics. New Dehli: New Age International (P) Ltd., 2007.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 10, PP. 365-373, October 2019
Conservation and management of energy and power in any sector especially in large institutes, is of much significance. Energy efficient electrical systems lead to energy efficient delivering systems by keeping the power losses minimum. Energy audit is the best solution for the energy conservation where the system is verified and observed to reduce energy consumption without any negative effect on the system. It is an energy audit of a given case study of an accommodation area, a Boys Hostel (ALI Hall) of Bahauddin Zakariya University, Multan Pakistan. It is the comprehensive energy audit of hostel with tariff C-2b (29) T and 11.21 rupees per unit. Hostel is estimated as consuming 44836.42 units and cost of 502616 rupees. This survey and analysis suggests certain recommendations for energy savings and to reduce unit consumption up to 20098.572 and cost of 225305 rupees.
[1] Perez-Lombard, L., J. Ortiz, and C. Pout, A review on buildings energy consumption information. Energy and buildings, 2008. 40(3): p. 394-398.
[2] McIntosh, M., Report: Iowa has 24,000 bridges, 5,000 structurally deficient. KCCI News, 2013. 20.
[3] Wong, H. and C.K. Lee. Application of energy audit in buildings and a case study. in 1993 2nd International Conference on Advances in Power System Control, Operation and Management, APSCOM-93. 1993. IET.
[4] Ahila, C. and W.J. Femi. Energy audit in ladies hostel. in TENCON 2015-2015 IEEE Region 10 Conference. 2015. IEEE.
[5] Fischer, C., Feedback on household electricity consumption: a tool for saving energy? Energy efficiency, 2008. 1(1): p. 79-104.
[6] Fumo, N., A review on the basics of building energy estimation. Renewable and Sustainable Energy Reviews, 2014. 31: p. 53-60.
[7] Chiu, T.-Y., S.-L. Lo, and Y.-Y. Tsai, Establishing an integration-energy-practice model for improving energy performance indicators in ISO 50001 energy management systems. Energies, 2012. 5(12): p. 5324-5339.
[8] Goyal, P., B.S. Kumar, and K. Sudhakar. Energy audit: A case study of energy centre and Hostel of MANIT, Bhopal. in 2013 International Conference on Green Computing, Communication and Conservation of Energy (ICGCE). 2013. IEEE.
[9] Zhang, J., et al. How to reduce energy consumption by energy audits and energy management: The case of province Jilin in China. in 2011 Proceedings of PICMET11: Technology Management in the Energy Smart World (PICMET). 2011. IEEE.
[10] Krarti, M., Energy audit of building systems: an engineering approach. 2016: CRC press.
[11] Gordic, D., et al., Development of energy management system–Case study of Serbian car manufacturer. Energy Conversion and Management, 2010. 51(12): p. 2783-2790.
[12] Baechler, M., C. Strecker, and J. Shafer, A Guide to Energy Audits. PNNL-20956. Pacific Northwest National Laboratory, Richland, WA. Prepared for US Department of Energy under Contract DEAC05-76RL01830, 2011.
[13] Manjunatha, P., et al., Energy audit, conservation and power factor improvement for BMSIT campus. International Journal of Research in Engineering and Technology, 2013. 2(11): p. 354-359.
[14] Unachukwu, G.O., Energy savings opportunities at the University of Nigeria, Nsukka. Journal of Energy in Southern Africa, 2010. 21(1): p. 2-10.
[15] Kamalapur, G. and R. Udaykumar. Electrical energy conservation in India-Challenges and achievements. in 2009 International Conference on Control, Automation, Communication and Energy Conservation. 2009. IEEE.
[16] Dillman, D.A., E.A. Rosa, and J.J. Dillman, Lifestyle and home energy conservation in the United States: the poor accept lifestyle cutbacks while the wealthy invest in conservation. Journal of Economic Psychology, 1983. 3(3-4): p. 299-315.
[17] Hirst, E., L. Berry, and J. Soderstrom, Review of utility home energy audit programs. Energy, 1981. 6(7): p. 621-630.
[18] Abraham, C., et al., Energy Audit Of IIT-Bombay Campus. Draft Final Report, Indian Institute of Technology-Bombay, 2008.
[19] Ng, T.F., et al., Energy Consumption in Student Hostels of Universiti Sains Malaysia: Energy Audit and Energy Efficiency Awareness, in Handbook of Theory and Practice of Sustainable Development in Higher Education. 2017, Springer. p. 191-207.
[20] Abdelaziz, E., R. Saidur, and S. Mekhilef, A review on energy saving strategies in industrial sector. Renewable and sustainable energy reviews, 2011. 15(1): p. 150-168.
[21] Mehta, V. and R. Mehta, Principles of power system. S. Chand, New Delhi, 2004.
[22] Radhi, H., A systematic methodology for optimising the energy performance of buildings in Bahrain. Energy and buildings, 2008. 40(7): p. 1297-1303.
[23] Thumann, A. and W.J. Younger, Handbook of energy audits. 2003: Fairmont Press.
[24] Hirst, E. and M. Brown, Closing the efficiency gap: barriers to the efficient use of energy. Resources, Conservation and Recycling, 1990. 3(4): p. 267-281.
[25] Fleiter, T., J. Schleich, and P. Ravivanpong, Adoption of energy-efficiency measures in SMEs—An empirical analysis based on energy audit data from Germany. Energy Policy, 2012. 51: p. 863-875.
[26] Sameeullah, M., et al., Energy Audit: A Case Study of Hostel Building. International Journal of Research in Management, Science & Technology, 2014. 2(2).
[27] Doty, S. and W.C. Turner, Energy management handbook. 2004: Crc Press.
[28] Ibrik, I.H. and M.M. Mahmoud, Energy efficiency improvement procedures and audit results of electrical, thermal and solar applications in Palestine. Energy Policy, 2005. 33(5): p. 651-658.
[29] Ramya, L. and M. Femina, Energy auditing a walk-through survey. International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, 2014. 3(2): p. 2320-3765
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 10, PP. 360-364, October 2019
Energy is a prerequisite for sustainable development in todays world. Pakistan is a developing country in the South East Asia with a population of more than 210 million. Pakistan is highly dependent on imported oil and gas since a long time. The share of installed renewable energy capacity uptil now is 6%. Khyber Pakhtunkhwa (KP) is one of the four provinces of Pakistan. KP is blessed with a significant amount of renewable energy potential which includes hydroelectric, solar, wind and biomass. This paper starts with Pakistan’s energy scenario including the current energy supply and demand gap. It is then followed by a discussion on the renewable energy potential across KP. Hydropower alone has a total potential of around 25000 MW. Average daily solar radiation for KP is found to be 4.99kWh/m2/day It was found that daily solar radiation remains high in the summer season from April-July and then falls in the winter season. In KP, Mardan receives the highest daily solar radiation in June and Chitral receives the lowest daily solar radiation in December. The province is also blessed with biomass. KP has total livestock population of 43 million including cows, buffaloes, sheep and goats. Waste from animals can be converted into biogas which can be used for cooking and heating purposes. Some parts of the province like Malakand, Buner, Haripur have also some wind potential which is enough to provide electricity to the nearby villages and communites. The paper then discusses reasons for energy shortfall followed by short term and long term measures that can be adopted by KP government to tackle energy crisis.
[1] F. Fatai, K and Oxley, Les and Scrimgeour, “Modelling the causal relationship between energy consumption and GDP in New Zealand, Australia, India, Indonesia, The Philippines and Thailand,” Math. Comput. Simul., vol. 64, pp. 431–445, 2004.
[2] M. A. T. Muneer, S. Maubleu, “Prospects of solar water heating for textile industry in Pakistan.,” Renew. Sustain. Energy Rev., vol. 10, no. 1, pp. 1–23, 2006.
[3] “Pakistan: rapid assessment and gap analysis. [UNDP] - United Nations Development Programme. Sustainable energy for all (SE4ALL) http://www.se4all.org/sites/default/files/Pakistan_RAGA_EN_Released.pdf,” 2014.
[4] “Hydrocarbon Development Institute of Pakistan,” 2016. [Online]. Available: https://www.hdip.com.pk/. [Accessed: 05-Mar-2019].
[5] “Pakistan to set 30% plus 30% renewable energy target by 2030.” [Online]. Available: https://wwindea.org/blog/2019/04/02/pakistan-to-set-30-plus-30-renewable-energy-target-by-2030/. [Accessed: 02-Feb-2019].
[6] “Hydro power Resources of Pakistan,” 2011. [Online]. Available: http://www.ppib.gov.pk/HYDRO.pdf. [Accessed: 05-Jan-2019].
[7] “IRENA Renewables Readiness Assesment Pakistan,” 2018. [Online]. Available: https://www.irena.org/publications/2018/Apr/Renewa
[8] M. A. Sheikh, “Renewable energy resource potential in Pakistan,” Renew Sust Energy Rev, vol. 13, pp. 2696–702, 2009.
[9] M. R. Adnan S, Khan AH, Haider S, “Solar Energy Potential in Pakistan,” J. Renew. Sustain. Energy, vol. 4, 2012.
[10] M. Z. Baloch MH, Kaloi GS, “Current scenario of the wind energy in Pakistan challenges and future perspectives: a case study.,” Energy Rep, vol. 2, pp. 201–10, 2016.
[11] Farooqui SZ., “Prospects of renewables penetration in the energy mix of Pakistan.,” Renew Sustain Energy Rev, vol. 29, pp. 693–700, 2014.
[12] “Pakistan economic survey 2009-10. Ministry of Finance, Government of Pakistan.” [Online]. Available: http://www.finance.gov.pk/survey_0910.html. [Accessed: 02-Feb-2019].
[13] M. M. Uddin W, Khan B, Shaukat N, “Biogas potential for electric power generation in Pakistan: a survey.,” Renew Sustain Energy Rev, vol. 54, pp. 25–33, 2016.
[14] “Livestock Consensus of Khyber Pakhtunkhwa.” [Online]. Available: http://www.pbs.gov.pk/content/livestock-population. [Accessed: 02-Feb-2019].
[15] M. T. Mirza UK, Ahmad N, “An overview of biomass energy utilization in Pakistan.,” Renew Sustain Energy Rev, vol. 12, no. 7, pp. 1988–96, 2008.
[16] “Wind Resource Map for Pakistan.” [Online]. Available: http://www.pmd.gov.pk/wind/Wind_Project_files/Page694.html. [Accessed: 04-May-2019].
[17] M. Realff, “Bio Renewable Resources,” J. Ind. Ecol. IND ECOL, vol. 7, pp. 227–228, 2004.
[18] Donald L Klass, “Biomass for Renewable energy, Fuels and Chemicals,” 2006. [Online]. Available: https://www.sciencedirect.com/book/9780124109506/biomass-for-renewable-energy-fuels-and-chemicals. [Accessed: 25-Dec-2018].
[19] G N Tiwari and M K Ghosal, Renewable Energy Resources: Basic Principles and Applications. Alpha Science International, 2005.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 10, PP. 354-359, October 2019
In recent decades, energy demand has grown exponentially. Fossil fuels, which today meet the bulk of global energy demand, can be gradually replaced by renewable energies, thus limiting its dangerous consequences such as climate change, environmental pollution, depletion of natural resources, etc. Solar energy can play an important role in the satisfaction of energy demand, especially in a heavily sun-ridden country. The current study focuses on the modelling and optimization of Organic Rankine Cycle (ORC) based on different organic fluids operating in a temperature range below 50-100 °C. The ORCs are a good choice to produce small-scale energy due to the lower temperature range of 50 to 99 °C. They are therefore simple and inexpensive. Flat plate (FPC) or evacuated tube solar collectors (ETC) can also provide the desired energy. In this work, two system configurations are analyzed. In configuration-I (C-I), the water from the collector outlet moves to the hot water storage tank (HWST) connected in series, while in configuration-II (C-II), HWST is not used. Therefore, the hot water from the solar collector outlet enters directly into the auxiliary heater (which will be lit if necessary, otherwise) and the water return from the heat exchanger will become the input of the solar collector. Working fluids suitable for a solar-powered ORC at a temperature of 100 °C or lower are selected using predefined criteria such as higher fluid densities, maximum cycle efficiency, safety and environmental data, a moderate temperature and inexpensive and uncomplicated equipment. The R125 and R245ca were found to be good fluids due to the minimum collector area for the desired yield and maximum efficiency, respectively. For the R125, the minimum required collector area is estimated to be 50 m² for the ETC and 68.14 m² for the FPC. For these areas, the optimized size of the HWST is estimated at 1350 L. System configurations are modelled and simulated in TRNSYS for the entire year, from January 1st to December 31st, to investigate optimal collector tilt, the smallest collector area for maximum solar fraction, and solar collector thermal efficiency. Monthly solar collector efficiency is calculated for both configurations. The results of the simulation showed that C-II gives a comparatively higher solar collector thermal efficiency and solar fraction. For both collectors, the maximum seasonal solar fraction is obtained at an inclination of approximately 14°. A thermal efficiency of evacuated tube solar collector is comparatively higher for C-II than that of C-I and one observes the same trend for FPC. In addition, the thermal efficiency of the ETC at 50 m² is higher than that of the FPC at an area of 68.14 m².
[1] Kiyarash Rahbar, Saad Mahmoud, Raya K Al Dadah, Nima Moazami, Seyed A. Mirhadizadeh. (2017). Review of organic Rankine cycle for small scale applications Energy Conversion and Management 134, 135-155.
[2] N. Abas, A. Kalair, N. Khan’Review of fossil fuels and future energy technologies’ Futures 69 (2015) 31–49
[3] Dolf Gielen, Francissco Boshell ‘The role of renewable energy in the global energy transformation’ Energy Strategy Reviews volume 24 p38-50
[4] M. Wajahat, M. Shoaib, A. Waheed ‘Modeling and Analysis of Solar Assisted Adsorption Cooling System Using TRNSYS’ World Academy of Science, Engineering and Technology International Journal of Energy and Power Engineering Vol:9, No:7, 2015
[5] TRNSYS 17 A Transient System Simulation Program Mathematical Reference 4th Vol, 486p
[6] Jakob, Uli, and Walter Mittelbach. "Development and investigation of a compact silica gel/water adsorption chiller integrated in solar cooling systems." In VII Minsk international seminar “Heat pipes, heat pumps, refrigerators, power sources”, Minsk, Belarus, pp. 8-11. 2008.
[7] Aldubyan, M., and A. Chiasson. "Thermal Study of Hybrid Photovoltaic-Thermal (PVT) Solar Collectors Combined with Borehole Thermal Energy Storage Systems." Energy Procedia141 (2017): 102-108.
[8] Zhao, D. L., Y. Li, Y. J. Dai, and R. Z. Wang.“Optimal study of a solar air heating system with pebble bed energy storage." Energy conversion and management 52, no. 6 (2011): 2392-2400.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 10, PP. 347-353, October 2019
This research work presents two optimization algorithms to optimize the path and energy in the wireless sensor network. Minimum Spanning Tree (MST) and Particle Swarm Optimization (PSO) algorithms both are utilized to optimize the path and energy of a system, which is connected on a fifty nodes network deployed randomly on 100x100 meters region. The proposed scheme is for the constrained improvement problem, or more explicitly, a weighted spanning tree problem and its appliance to Wireless Sensor Network (WSN) is examined here where definite exploratory discoveries on the energy improvement of the network have been exhibited.
[1] S. Bouarafa, R. Saadane, and M. Rahmani, “Inspired from Ants Colony: Smart Routing Algorithm of Wireless Sensor Network,” Information, vol. 9, no. 1, p. 23, 2018.
[2] A. Khan et al., “A localization-free interference and energy holes minimization routing for underwater wireless sensor networks,” Sensors (Switzerland), vol. 18, no. 1, pp. 1–17, 2018.
[3] A. Ali, Y. Ming, T. Si, S. Iram, and S. Chakraborty, “Enhancement of RWSN lifetime via firework clustering algorithm validated by ANN,” Inf., vol. 9, no. 3, pp. 1–13, 2018.
[4] A. Darwish and A. E. Hassanien, “Wearable and implantable wireless sensor network solutions for healthcare monitoring,” Sensors, vol. 11, no. 6, pp. 5561–5595, 2011.
[5] S. Tomic and I. Mezei, “Improvements of DV-Hop localization algorithm for wireless sensor networks,” Telecommun. Syst., vol. 61, no. 1, pp. 93–106, 2015.
[6] M. S. Elgamel and A. Dandoush, “A modified Manhattan distance with application for localization algorithms in ad-hoc WSNs,” Ad Hoc Networks, vol. 33, pp. 168–189, 2015.
[7] R. Lachowski, M. Pellenz, M. Penna, E. Jamhour, and R. Souza, “An Efficient Distributed Algorithm for Constructing Spanning Trees in Wireless Sensor Networks,” Sensors, vol. 15, no. 12, pp. 1518–1536, 2015.
[8] A. G. Bakirtzis, P. N. Biskas, C. E. Zoumas, and V. Petridis, “Optimal power flow by enhanced genetic algorithm,” IEEE Trans. Power Syst., vol. 17, no. 2, pp. 229–236, 2002.
[9] B. Risteska Stojkoska, “Nodes Localization in 3D Wireless Sensor Networks Based on Multidimensional Scaling Algorithm,” Int. Sch. Res. Not., vol. 2014, pp. 1–10, 2014.
[10] I. Banerjee, I. Roy, A. R. Choudhury, B. D. Sharma, and T. Samanta, “Shortest path based geographical routing algorithm in wireless sensor network,” Commun. Devices Intell. Syst. (CODIS), 2012 Int. Conf., pp. 262–265, 2012.
[11] P. Chen, H. Ma, S. Gao, and Y. Huang, “SSL: Signal similarity-based localization for ocean sensor networks,” Sensors (Switzerland), vol. 15, no. 11, pp. 29702–29720, 2015.
[12] J. Cota-Ruiz, J.-G. Rosiles, P. Rivas-Perea, and E. Sifuentes, “A Distributed Localization Algorithm for Wireless Sensor Networks Based on the Solutions of Spatially-Constrained Local Problems,” IEEE Sens. J., vol. 13, no. 6, p. 11, 2013.
[13] Y. Shang, W. Ruml, Y. Zhang, and M. P. J. Fromherz, “Localization from mere connectivity,” Proc. 4th ACM Int. Symp. Mob. ad hoc Netw. Comput. - MobiHoc ’03, p. 201, 2003.
[14] A. a Kannan, G. Mao, and B. Vucetic, “Simulated Annealing based Wireless Sensor Network Localization with Flip Ambiguity Mitigation,” Most, vol. 00, no. c, 2006.
[15] [C. Alippi and G. Vanini, “A {RSSI}-Based and Calibrated Centralized Llocalization Technique for Wireless Sensor Networks,” Proc. IEEE Int. Conf. Pervasive Comput. Commun. Work., 2006.
[16] [B. Huang, C. Yu, and B. D. O. Anderson, “Analyzing Error Propagation in Range-based Multihop Sensor Localization,” Proc. IEEE Conf. Decis. Control, pp. 865–870, 2009.
[17] G. Anastasi, M. Conti, M. Di Francesco, and A. Passarella, “Energy conservation in wireless sensor networks: A survey,” Ad Hoc Networks, vol. 7, no. 3, pp. 537–568, 2009.
[18] R. Rajagopalan and P. Varshney, “Data aggregation techniques in sensor networks: A survey,” pp. 48–63, 2006.
[19] K. Akkaya and M. Younis, “A survey on routing protocols for wireless sensor networks,” Ad Hoc Networks, vol. 3, no. 3, pp. 325–349, 2005.
[20] S. Sudevalayam and P. Kulkarni, “Energy harvesting sensor nodes: Survey and implications,” IEEE Commun. Surv. Tutorials, vol. 13, no. 3, pp. 443–461, 2011.
[21] I. Dietrich and F. Dressler, “On the lifetime of wireless sensor networks,” ACM Trans. Sens. Networks, vol. 5, no. 1, pp. 1–39, 2009.
[22] C. E. Jones, K. M. Sivalingam, P. Agrawal, and J. C. Chen, “A survey of energy efficient network protocols for wireless networks,” Wirel. Networks, vol. 7, no. 4, pp. 343–358, 2001.
[23] J. N. Al-Karaki and A. E. Kamal, “Routing techniques in wireless sensor networks: A survey,” IEEE Wirel. Commun., vol. 11, no. 6, pp. 6–27, 2004.
[24] A. A. Abbasi and M. Younis, “A survey on clustering algorithms for wireless sensor networks,” Comput. Commun., vol. 30, no. 14–15, pp. 2826–2841, 2007.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 10, PP. 339-346, October 2019
Solar-biomass hybrid tunnel dryer has been designed to dry different kinds of agricultural products.The dryer is comprised of three major parts, solar collector(inside the drying chamber), backup heating stove and an additional collector connected to the drying chamber through PVC pipes. This study presents the performance evaluation of the dryer. Collector average efficiency was found to be 29.7% and the drying efficiency for the system was 22.8%. The tunnel dryer was run on solar energy and solar-biomass energy for different set of tests. Different types of vegetables and fruits were dried in the tunnel dryer. A total of 7 solar-biomass hybrid tunnel dryer were constructed out of which 6 were installed in Swat KP Pakistan (Regions: Chikrae, Tal sar, Badalae, Jarro, Charbagh and Khwazakhela). Swat being the most effective area in respect of producing fruits. The post harvest losses are high. The total capacity of the dryer was found to be 75Kg.
[1] A, Sharma et. al (2009) Solar-energy drying systems: a review, Renewable and sustainable energy review, 13(67): 1185-1210.
[2] GuttiBabagana, Silas, K and Mustafa, B.G., Design and construction of forced/natural convection solar vegetable dryer with heat storage, ARPN journal of engineering and applied science, 7(10), (2012) 72-77.
[3] Mujumdar, Arun and DevahastinSakamon, Mujumdars practical guide to industrial drying, Montreal: Exergex corporation, (2000).
[4] Joshi, Pallavi and Mehata, Dipika, Effect of drying on the nutritive value of drumstick leaves, Journal of Metabolomics and Systems Biology,1(1), (2010) 5-9
[5] Joshi, Pallavi and Mehata, Dipika, Effect of drying on the nutritive value of drumstick leaves, Journal of Metabolomics and Systems Biology,1(1), (2010) 5-9
[6] Blair R. et. al (2007) Design of a solar-powered fruit and vegetables dryers
[7] SMEDA to establish fruit dehydration unit in swat https://fp.brecorder.com/2017/06/20170623191996/
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 10, PP. 333-338, October 2019
In this paper various control schemes used for the enhancement of tranisent have been studied. There are two main control schemes used for transient stability enhancement: Prevntive controle scheme and Emergency control scheme. In this paper the main focus is on emergency control scheme. Further various emergency schemes have been presented in this paper like fast valving, braking resistors, fast valving in coordination with braking resistor, HVDC link for the improvement of transient stability. At the end of this paper a new control scheme has also been proposed in which PMU’s are used in coordination with HVDC link for the improvement of transient stability. PMU’s are used for the continuous monitoring of the system parameters.
[1] P. Kundur, “Power System Stability and Control”. McGraw-Hill, 1994.
[2] M. Pavella, D. Ernst, and D. Ruiz- Vega, “Transient Stability of power systems”. Kluwer Academic, 2000.
[3] P.Gomes, “New strategy to improve bulk power system security : lesson learned from large blackout,”
[4] Y. Min, K. Hou, R. Zhang, and Q. Tu, ÒA, “new method for generation shedding and load shedding in power system emergency control”. Ó in Proc. IEEE International Conference on Electric Utility Deregulation, Restructuring and Power Technologies, vol. 1, April 2004, pp. 210-214.
[5] Chunyan. Li, Changhong. Deng, Y. Sun, and X. Chen, Ò “An on-line transient stability emergency control strategy based on PMU forecasted trajectory”, in Proc. International Power Engineering Conference, Dec 2007, pp. 807-812.
[6] D. Ruiz-Vega and M. Pavella, ÒA comprehensive approach to transient stability control. II. Open loop emergency control, Ó IEEE Trans Power System, vol. 18, no. 4, pp. 1454-1460, Nov 2003.
[7] D. Ernst and M. Pavella, “Closed-loop transient stability emergency control”. in Proc. IEEE Power Engineering Society Winter Meeting, vol. 1, 2000, pp. 58-62
[8] M. Glavic, D. Ernst, D. Ruiz-Vega, L. Wehenkel, and M. Pavella, “E-SIME - a method for transient stability closed-loop emergency control: achievements and prospects,” in Proc. iREP Symposium- Bulk Power System Dynamics and Control - VII, Revitalizing Operational Reliability, Aug 2007, pp. 1-10.
[9] R. Patel, T. S. Bhatti, and D. P. Kothari, “A modified approach to transient stability enhancement with fast valving and braking resistor applications”, in J Electrical Power & Energy Systems, vol. 28, no. 10, 729-738, Dec 2006.
[10] N.fermendopulle and R.Ramshaw“Domain of stability of synchronous machine with excitation control-a cell mapping approach, Electric Power Systems Research, vol. 27, no. 3, pp. 173-181, Aug 1993.
[11] D. K. Reitan and N. Ramarao, “A method of improving transient stability by bang-bang control of tie-line reactance”, IEEE Trans Power Apparatus and Systems, vol. PAS-93, no. 1, pp. 303-311, Jan 1974.
[12] D. Ernst, M. Glavic, F. Capitanescu, and L. Wehenkel, “Reinforcement learning versus model predictive control: a comparison on a power system problem,” IEEE Transactions on Systems, Man, and Cybernetics - Part B: Cybernetics, vol. 39, pp. 517–529, April 2009.
[13] M. Larsson, D. Hill, and G. Olsson, “Emergency voltage control using search and predictive control,” International Journal of Power and Energy Systems, vol. 24, no. 2, pp. 121–130, 2002.
[14] B. Otomega, A. Marinakis, M. Glavic, and T. Van Cutsem, “Model predictive control to alleviate thermal overloads,” IEEE Transactions on Power Systems, vol. 22, pp. 1384–1385, August 2007.
[15] J. Ford, G. Ledwich, and Z. Dong, “Efficient and robust model predictive control for first swing transient stability of power systems using flexible ac transmission systems devices,” IET Proceedings on Generation, Transmission, and Distribution, vol. 2, no. 5, pp. 731–742, 2008.
[16] Y.Phulpin, J.Hazra, D.Ernst, “Model predictive control of HVDC power flow to improve transient stability in power system”, Smart grid communications, 2011
[17] C. Li, C. Deng, Y. Sun, and X. Chen, Ò “An on-line transient stability emergency control strategy based on PMU forecasted trajectory”, in Proc. International Power Engineering Conference, Dec 2007, pp. 807-812.
[18] Y.Xue, “practically negative effects of emergency controls”, in proc.1997 IFAC/CIGRE symposium on control of power system and power plants, p.134-138.
[19] M. Pavella, D. Ernst, and D. Ruiz-Vega, Transient Stability of Power Systems: A Unified Approach to Assessment and Control. Norwell, MA: Kluwer, 2000.
[20] L. Wehenkel, “Emergency control and its strategies,” in Proc. Power Syst. Comput. Conf., vol. 1, Trondheim, Norway, June 28–July 2, 1999, pp. 35–48
[21] Daniel Ruiz-Vega, Mania Pavella, “A Comprehensive Approach to Transient Stability Control: Part II—Open Loop Emergency Control”, IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 18, NO. 4, NOVEMBER 2003.
[22] D. Ruiz-Vega and M. Pavella, “A comprehensive approach to transient stability control—Part 1: near-optimal preventive control,” IEEE Trans. Power Syst., vol. 18, pp. 1446–1453, Nov. 2003.
[23] D. Ruiz-Vega, “Dynamic Security Assessment and Control: Transient and Small Signal Stability,” Ph.D. dissertation, Univ. Liege, Liege, Belgium, 2002.
[24] Y, Zhang, L. Wehenkel and M. Pavella. .A Method for Real-Time Transient Stability Emergency Control, Proc. of CPSP97, I FAC/CIGRE Symp. On Control of Power Systems and Power Plants, August 1997, Beijing, China, pp. 673-678.
[25] D. Ernst, A. Bettiol, Y. Zhang, L. Wehenkel and M. Pavella. .Real Time Transient Stability Emergency Control of the South- Southeast Brazilian System., SEPOPE, Salvador, Brazil, May 1998, (Invited paper, IP044).
[26] D. Ernst, M. Pavella, .Closed-Loop Transient Stability Emergency Control, Proc. of IEEE/PES Winter Meeting, Singapore, 2000.
[27] Duniel Ruiz- Vega, Mevludin Glavic, Damien Ernst “transient stability emergency control combining open loop and closed loop techniques”,
[28] J.Hazra, Y.Phulpin, D.Ernst, “HVDC control strategies to improve transient stability in interconnected power system”, Power Tech, IEEE Busharest pp.1-6 oct. 2009.
[29] Duniel Ruiz-Vega, Louis Wehenkel, Damien Ernst, Alejandro Pizano-Martinez and Claudio R. Fuerte-Esquivel, “Power system transient stability preventive and emergency control, chapter 5”.
[30] Duniel Ruiz- Vega, Mevludin Glavic, Damien Ernst “transient stability emergency control combining open loop and closed loop techniques”,
[31] Pavella M, Ruiz-Vega D, and al. SIME: A Comprehensive Approach to Transient Stability. Real-Time Stability Assessment in Modern Power System Control Centers, John Wiley & Sons, Inc 2008; 353-400.
[32] Pavella, M., D. Ernst, and al. Transient Stability of Power Systems: A Unified Approach to Assessment and Control, Kluwer Academic Publishers 2000.
[33] Youcef Oubbati, Salem Arif, “Securing transient stability Assessment Using Single Machine Equivalent Method”, Electrical Engineering (ICEE), pp. 1-4, Dec 2015
[34] Durrant CW. Boiler response to partial load rejection resulting from System upsets. IEEE Trans 1982; PAS-10(8):2630–9.
[35] IEEE Working Group on Special Stability Controls Power System Engineering Committee. Bibliography on the application of discrete Supplementary controls to improve power system stability. IEEE Trans ‘1987; PWRS-2(2):474–85.
[36] Ramnarayan Patel, T.S.Bhati, D.P.Kothari, “A modified approach to transient stability enhancement with fast valving and braking resistor applications”, electric power and Energy system, p.729-738, 2006
[37] Patel Ramnarayan, Bhatti TS, Kothari DP. Dynamic braking control strategies: a comparative analysis. In: Proceedings international conference on energy automation and information technology 2001
[38] A.H.M.A. Rahim, A.I.J. Al-Sammak, “Optimal switching of dynamic Braking resistor, reactor or capacitor for transient stability of power system”, IEE Proceedings C-Generation, Transmission and distribution, pp. 89-93 vol 138 Jan 1991.
[39] Riya Saluja, Mohd. Hasan Ali, “Novel Braking resistor models for transient stability enhancement in power grid system”, Innovative Smart Grid Technologies (ISGT), April 2013
[40] Al-Azzawi FJ, Omar F. Dynamic brake switching time in multimachine Power system during emergency: Proceeding of the 24th University power engineering conference, Belfast, Britain, September 1989. p. 101–6.
[41] Al-Azzawi FJ, Al-Wafi NM, Jassim AK, Omar F. Braking resistorsize, switching instants and assessment of power system transient stability by direct methods. J Inst Engrs (India) 1995;76-175–80.
[42] Patel, Ram Narayan. Bhatti, T.S. Kothari, D.P. “Improvement of Power System Transient Stability using Fast Valvings: A Review”, Electric Power Components and Systems, P-927-938, Nov 30, 2010
[43] A.H.M.A. Rahim, A.I.J. Al-Sammak, “Optimal switching of dynamics braking resistor, reactor, or capacitor for transient stability of power system”, IEE proceeding C-Generation, Transmission and Distribution, vol 138, no.1, pp-89-93, 1991
[44] G.G.Karady, M.A.Mohammad, “improving transient stability using fast valving base on tracking rotor angle and active power”, power engineering society meeting summer, 2002.
[45] K.Koyanagi, T.Komukai, “a study of fast valving as an aid to power system transient stability part1. Some considerations of control methods for fast valving”, p.1-5, 1977
[46] Shri Bhagwan, “A Review: High Voltage Transmission System”, International Journal on Recent Technologies in Mechanical and Electrical Engineering (IJRMEE) pp. 1-4, vol 02.
[47] Vijay. K. sood, “High Voltage Direct Current And FACTS controller”, USA Kluwer Academic Publisher 2004.
[48] N. Flourentzou, V. G. Agelidis, and G. D. Demetriades, “VSC based HVDC power transmission system: an overview”, IEEE transaction on power electronics, vol. 24, pp. 593-602, March 2009.
[49] Chan-ki Kkim, Vijay K. Sood. Gil-Sood Jang, Seong-Joo Lim, and Seok-Jin Lee, “High Voltage Direct Current transmission” chapter 01 Development of HVDC Technology,
[50] P. Kundur, “Power system Stability and Control”, McGraw-Hill, 1994.
[51] “Compendium of HVDC schemes throughout the world”, International conference on Large High Voltage Electric systems, CIGRE WG 04 of SC 14. 1987.
[52] Brahim. Bekki, Mohamed Moujahid, Mouhamed. Boudiaf, “Transmission System Transient stability enhancement based on VSC-HVDC”, Journal of Electrical Engineering, pp. 1-6
[53] Schetter F, Huang H, Christl N, "HVDC transmission systems using voltage source converter-design and applications" IEEE Power Engineering Society Summer Meeting, July 2000.
[54] Y.Phulpin, J.Hazra, D.Ernst, “Model predictive control of HVDC power flow to improve transient stability in power system”, Smart grid communications, 2011
[55] Javier Renedo, Aurelio Garci’ a-Cerrada, Luis Rouco, “Active power control strategies for transient stability enhancement of AC/DC grids with VSC-HVDC multi-terminal systems”, IEEE transaction on Power system, pp.4595-4604, vol 31, November 2016.
[56] K. P. Basu, “Stability enhancement of power system by controlling HVDC power flow through the same AC transmission line”, Industrial Electronics and Application, pp. 1-6 Oct 2009
[57] Y.Phulpin, J.Hazra, D.Ernst, “Model predictive control of HVDC power flow to improve transient stability in power system”, Smart grid communications, 2011
[58] J.Hazra, Y.Phulpin, D.Ernst, “HVDC control strategies to improve transient stability in interconnected power system”, Power Tech, IEEE Busharest pp.1-6 oct. 2009.
[59] Daniel Dotta, Joe H. Chow, Luigi Vanfretti, Muhammad S. Almas, & N. Gostini, “A MATLAB-based PMU Simulator”, IEEE.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 10, PP. 324-332, October 2019
The utilization of the waste to energy technology was studied for Peshawar city, the data was compiled from the authentic data base of Municipal Corporation Peshawar. It includes the data from twelve different regions of Peshawar city. It is estimated that the flammable share of MSW of Peshawar city in tons will be 544.38 tons. Hence a power of 18.5 MW can be generated from MSW of Peshawar City by utilization of Plasma Arc Gasification Technique. It’s suggested that 18.5MW Power Plant will generate electricity @ 9 ₵/ KWh which is less as compare to current national average rate.
[1] Los Angeles County Solid Waste Management Committee, "Conversion Technology Evaluation Report" 2005.
[2] G. C. Young, Municipal Solid Waste to Energy Conversion Processes: Economic, Technical, and Renewable Comparisons: Wiley, 2010.
[3] Water and Power Development Authority (WAPDA) Pakistan. (11/12/2014). Existing Generating Capacity. Available: http://www.wapda.gov.pk/htmls/power-index.html
[4] S. Saini, P. Rao, and Y. Patil, "City based analysis of MSW to energy generation in India, calculation of state-wise potential and tariff comparison with EU" Procedia-Social and Behavioral Sciences, vol. 37, pp. 407-416, 2012.
[5] R. R. Baidoo, F. Yeboah, and H. Singh, "Energy and economic analysis of closed-loop plasma waste-to-power generation model and in comparison with Incineration and Micro-Turbine Models,"Electrical Power & Energy Conference (EPEC), 2009 IEEE, 2009, pp. 1-7.
[6] S. Z. Farooqui, "Prospects of renewables penetration in the energy mix of Pakistan," Renewable and Sustainable Energy Reviews, vol. 29, pp. 693-700, 2014.
[7] I. N. Kessides, "Chaos in power: Pakistan electricity crisis," Energy Policy, vol. 55, pp. 271-285, 2013.
[8] National Electric Power Regulatory Authority (NEPRA). (06/11/2014). Tariff. Available: http://www.nepra.org.pk/tariff.htm
[9] Macrotrends. (06/11/2014). Oil Prices History Chart. Available: http://www.macrotrends.net/
[10] V. C. Nelson, Introduction to Renewable Energy: Taylor & Francis, 2011.
[11] W. Tong, Wind Power Generation and Wind Turbine Design: WIT Press, 2010.
[12] Pakistan Meteorological Department. (06/11/2014). Wind Power Potential of Pakistan. Available: http://www.pmd.gov.pk/wind/Wind_Project_files/Page694.html
[13] C. Palanichamy, N. S. Babu, and C. Nadarajan, "Municipal solid waste fueled power generation for India," Energy Conversion, IEEE Transactions on, vol. 17, pp. 556-563, 2002.
[14] S. A. Kalogirou, Solar Energy Engineering: Processes and Systems: Elsevier Science, 2013.
[15] EduPic Graphical Resource. (06/11/2014). Energy Resources. Available: http://www.edupic.net/energy.htm
[16] A. C. Baker, Tidal Power: P. Peregrinus, 1991.
[17] S. Silveira, Bioenergy - Realizing the Potential: Elsevier Science, 2005.
[18] California Biomass Energy Alliance. (06/11/2014). Tracy Biomass Plant. Available: http://www.calbiomass.org/facilities/tracy-biomass-plant/
[19] P. S. Khan and M. Hoque, "Installation of a Solid-Waste fuelled Power Plant in Chittagong, Bangladesh: A feasibility study," in Strategic Technology (IFOST), 2010 International Forum on, 2010, pp. 208-212.
[20] World Bank, "Municipal Solid Waste Incineration," 1999.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 09, PP. 314-323, September 2019
The incessant depletion of world energy resources and the global environmental deterioration are a good indicator of banishing the conventional energy extraction technologies in favor of renewable and sustainable options. Pakistan being an agrarian society is home to one of the largest proportion of population dependent on agricultural products and livestock to make ends meet. Fortuitously this also provides an abundant resource for biomass which can be utilized for generating biogas energy. In the era of renewable energy boom, the resource has poignantly not been fully utilized. Whatever portion of the biogas energy has been tapped is not proliferating across the country owing to the lack of knowledge about the impacts of this precious resource. This research endeavor attempted to investigate the impact the biogas technology is imposing on the households that have adopted it. A total of 162 households composed of both adopters and non adopters of the technology were surveyed in the Dera Ismail Khan District of Pakistan in addition to the meetings and discussions with the relevant stakeholders. Resultantly the factors vastly impacting the adoption of the biogas technology were uncovered. Accordingly the apprehensions and misconceptions of the households not employing the technology despite possessing the resources necessary also came to surface. It was found out that the technology had profound impacts on the environment, education, and the health of the adopting families. However the age, education level, and gender of the target population did not bear any correlation with the decision to adopt the technology itself. The major barrier to the adoption of the technology in the target area was the high upfront costs of the technology, and low awareness about the technology’s installation, and maintenance.
[1] J. C. L. Liu Yang, Haiyan Yan, “Thermal comfort and building energy consumption implications- A review,” Appl. Energy, vol. 115, pp. 164–173, 2014.
[2] World Energy Outlook 2017. OECD, 2017.
[3] H. Zhao and F. Magoulès, “A review on the prediction of building energy consumption,” Renew. Sustain. Energy Rev., vol. 16, no. 6, pp. 3586–3592, Aug. 2012.
[4] I. Economic Adviser’s Wing, Finance Division, Government of Pakistan, “Economic Adviser’s Wing, Wing Finance Division, Government of Pakistan, Islamabad www.finance.gov.pk,” 2018.
[5] M. ud D. Q. Ahmed Sohail, “Energy-Efficient Buildings in Pakistan,” A Sci. J. COMSATS – Sci. Vis. Vol.16 Vol. 17, vol. 16, no. December, pp. 27–38, 2011.
[6] A. Masood, “SAARC Energy Centre,” 2010.
[7] K. Ahmad, A. F. Rafique, and S. Badshah, “Energy Efficient Residential Buildings in Pakistan,” Energy Environ., vol. 25, no. 5, pp. 991–1002, 2014.
[8] ASHRAE, Handbook Heating, Ventilating, and Air-Conditioning system and equipement. Atlanta: The American Society of Heating, Refrigerating and Air Conditioning Engineers, Inc., 2012.
[9] B. A. Holm, L. Blodgett, D. Jennejohn, and K. Gawell, “Geothermal Energy : International Market Update Geothermal Energy Association,” no. May, 2010.
[10] U. Younas et al., “Pakistan geothermal renewable energy potential for electric power generation: A survey,” Renew. Sustain. Energy Rev., vol. 63, pp. 398–413, 2016.
[11] H. Zaisheng, “Geothermal Heat Pumps in China – Present Status and Future Development,” pp. 31–33, 2008.
[12] G. Florides and S. Kalogirou, “Ground heat exchangers-A review of systems, models and applications,” Renewable Energy. 2007.
[13] L. Ozgener, “A review on the experimental and analytical analysis of earth to air heat exchanger (EAHE) systems in Turkey,” Renew. Sustain. Energy Rev., vol. 15, no. 9, pp. 4483–4490, 2011.
[14] E. Mands, M. Sauer, E. Grundmann, B. Sanner, and U. Gbr, “Shallow geothermal energy use in industry in Germany,” Eur. Geotherm. Congr. 2016, vol. 2010, no. 2013, pp. 19–24, 2016.
[15] A. Chel and G.N.Tiwari, “Performance evaluation and life cycle cost analysis of earth to air heat exchanger integrated with adobe building for New Delhi composite climate,” Energy Build., vol. 41, no. 1, pp. 56–66, Jan. 2009.
[16] R. Kumar, S. C. Kaushik, and S. N. Garg, “Heating and cooling potential of an earth-to-air heat exchanger using artificial neural network,” Renew. Energy, vol. 31, no. 8, pp. 1139–1155, 2006.
[17] G. Mihalakakou, “On estimating soil surface temperature profiles,” Energy Build., vol. 34, pp. 251–259, 2002.
[18] K. Labs, “Ground cooling, in: J. Cook (Ed.), Passive Cooling.” MIT Press, Cambridge, 1992.
[19] G. Florides and S. Kalogirou, “Ground heat exchangers-A review of systems, models and applications,” Renew. Energy, vol. 32, no. 15, pp. 2461–2478, 2007.
[20] B. B. Popiel, C., J. Wojtkowiak, “Measurements of temperature distribution in ground,” Exp. Therm. Fluid Sci., vol. 25, pp. 301–309, 2001.
[21] A. O. Ogunlela, “Modelling Soil Temperature Variations,” J. Agric. Resour. Dev., pp. 100–109, 2003.
[22] H. Ben Jmaa Derbel and O. Kanoun, “Investigation of the ground thermal potential in tunisia focused towards heating and cooling applications,” Appl. Therm. Eng., vol. 30, no. 10, pp. 1091–1100, 2010.
[23] F. Al-Ajmi, D. L. Loveday, and V. I. Hanby, “The cooling potential of earth-air heat exchangers for domestic buildings in a desert climate,” Build. Environ., vol. 41, no. 3, pp. 235–244, 2006.
[24] R. J. Sharan, G., “Soil temperature regime at Ahmedabad,” J. Agric. Eng., vol. 39, no. 1, 2002.
[25] A. G. Kanaris, A. A. Mouza, and S. V. Paras, “Flow and Heat Transfer Prediction in a Corrugated Plate Heat Exchanger using a CFD Code,” Chem. Eng. Technol., vol. 29, no. 8, pp. 923–930, 2006.
[26] V. P. Kabashnikov, L. N. Danilevskii, V. P. Nekrasov, and I. P. Vityaz, “Analytical and numerical investigation of the characteristics of a soil heat exchanger for ventilation systems,” Int. J. Heat Mass Transf., vol. 45, no. 11, pp. 2407–2418, 2002.
[27] M. Santamouris, G. Mihalakakou, A. Argiriou, and D. N. Asimakopoulos, “ON THE PERFORMANCE OF BUILDINGS COUPLED EARTH TO AIR HEAT EXCHANGERS WITH If a balance temperature , Tb is used where :,” Sol. Energy, vol. 54, no. 6, pp. 375–380, 1995.
[28] G. Mihalakakou, M. Santamouris, J. O. Lewis, and D. N. Asimakopoulos, “On the application of the energy balance equation to predict ground temperature profiles,” Sol. Energy, vol. 60, no. 3–4, pp. 181–190, 1997.
[29] O. Ozgener, L. Ozgener, and J. W. Tester, “A practical approach to predict soil temperature variations for geothermal (ground) heat exchangers applications,” Int. J. Heat Mass Transf., vol. 62, no. 1, pp. 473–480, 2013.
[30] H. Su, X. Liu, L. Ji, and J. Mu, “A numerical model of a deeply buried air – earth – tunnel heat exchanger,” Energy Build., vol. 48, pp. 233–239, 2012.
[31] A. Sehli, A. Hasni, and M. Tamali, “The potential of earth-air heat exchangers for low energy cooling of buildings in South Algeria,” Energy Procedia, vol. 18, pp. 496–506, 2012.
[32] M. De Paepe and A. Janssens, “Thermo-hydraulic design of earth-air heat exchangers,” Energy Build., vol. 35, no. 4, pp. 389–397, 2003.
[33] J. Pfafferott, “Evaluation of earth-to-air heat exchangers with a standardised method to calculate energy efficiency,” Energy Build., vol. 35, no. 10, pp. 971–983, 2003.
[34] A. De Jesus Freire, J. L. Coelho Alexandre, V. Bruno Silva, N. Dinis Couto, and A. Rouboa, “Compact buried pipes system analysis for indoor air conditioning,” Appl. Therm. Eng., vol. 51, no. 1–2, pp. 1124–1134, 2013.
[35] K. H. Lee and R. K. Strand, “The cooling and heating potential of an earth tube system in buildings,” Energy Build., vol. 40, no. 4, pp. 486–494, 2008.
[36] P. Hollmuller, “Analytical characterisation of amplitude-dampening and phase-shifting in air/soil heat-exchangers,” Int. J. Heat Mass Transf., vol. 46, no. 22, pp. 4303–4317, 2003.
[37] M. Cucumo, S. Cucumo, L. Montoro, and A. Vulcano, “A one-dimensional transient analytical model for earth-to-air heat exchangers, taking into account condensation phenomena and thermal perturbation from the upper free surface as well as around the buried pipes,” Int. J. Heat Mass Transf., vol. 51, no. 3–4, pp. 506–516, 2008.
[38] V. Badescu, “Simple and accurate model for the ground heat exchanger of a passive house,” Renew. Energy, vol. 32, no. 5, pp. 845–855, 2007.
[39] X. Li, J. Zhao, and Q. Zhou, “Inner heat source model with heat and moisture transfer in soil around the underground heat exchanger,” Appl. Therm. Engiineering, vol. 25, no. 10, pp. 1565–1577, 2005.
[40] J. Zhao, H. Wang, X. Li, and C. Dai, “Experimental investigation and theoretical model of heat transfer of saturated soil around coaxial ground coupled heat exchanger,” Appl. Therm. Engiineering, vol. 28, no. 2–3, pp. 116–125, 2008.
[41] T. S. Bisoniya, A. Kumar, and P. Baredar, “Study on Calculation Models of Earth-Air Heat Exchanger Systems,” J. Energy, vol. 2014, pp. 1–15, 2014.
[42] V. Bansal, R. Misra, G. Das Agrawal, and J. Mathur, “Performance analysis of earth – pipe – air heat exchanger for winter heating,” Energy Build., vol. 41, no. 11,05, pp. 1151–1154, 2009.
[43] K. W. A.Flaga-Maryanczyka, J. Schnotale, J. Radon, “Experimental measurements and CFD simulation of a ground source heat exchanger operating at a cold climate for a passive house ventilation system.pdf,” Energy Build., vol. 68, pp. 562–570, 2014.
[44] L. Ramírez-Dávila, J. Xamán, J. Arce, G. Álvarez, and I. Hernández-Pérez, “Numerical study of earth-to-air heat exchanger for three different climates,” Energy Build., vol. 76, pp. 238–248, Jun. 2014.
[45] R. Kumar, A. R. Sinha, B. K. Singh, and U. Modhukalya, “A design optimization tool of earth-to-air heat exchanger using a genetic algorithm,” Renew. Energy, vol. 33, no. 10, pp. 2282–2288, Oct. 2008.
[46] F. Ascione, L. Bellia, and F. Minichiello, “Earth-to-air heat exchangers for Italian climates,” Renew. Energy, vol. 36, no. 8, pp. 2177–2188, 2011.
[47] A. N. Z. Sanusi, L. Shao, and N. Ibrahim, “Passive ground cooling system for low energy buildings in Malaysia (hot and humid climates),” Renew. Energy, vol. 49, pp. 193–196, Jan. 2013.
[48] N. Aziah, M. Ariffin, A. Nur, Z. Sanusi, and A. M. Noor, “Materials for the Earth Air Pipe Exchanger ( EAPHE ) system as a passive ground cooling for hot-umid climate,” 2nd Int. Conf. Emerg. Trends Sci. Res. 2014, no. November, 2014.
[49] S. Jakhar, R. Misra, M. S. Soni, and N. Gakkhar, “Parametric simulation and experimental analysis of earth air heat exchanger with solar air heating duct,” Eng. Sci. Technol. an Int. J., vol. 19, no. 2, pp. 1059–1066, 2016.
[50] M. K. Ghosal, G. N. Tiwari, D. K. Das, and K. P. Pandey, “Modeling and comparative thermal performance of ground air collector and earth air heat exchanger for heating of greenhouse,” Energy Build., vol. 37, no. 6, pp. 613–621, Jun. 2005.
[51] A. H. Poshtiri and N. Gilani, “Feasibility study on using solar chimney and earth-to-air heat exchanger for natural heating of buildings,” World Renew. Congr., pp. 1773–1780, 2011.
[52] S. F. Ahmed, M. M. K. Khan, M. G. Rasul, M. T. O. Amanullah, and N. M. S. Hassan, “Comparison of earth pipe cooling performance between two different piping systems,” Energy Procedia, vol. 61, pp. 1897–1901, 2014.
[53] M. S. Kristen, “Final report laboratory research for the determination of the thermal properties of soils,” 1949.
[54] K. H. Lee and R. K. Strand, “The cooling and heating potential of an earth tube system in buildings,” Energy Build., vol. 40, no. 4, pp. 486–494, 2008.
[55] F. Ascione, L. Bellia, and F. Minichiello, “Earth-to-air heat exchangers for Italian climates,” Renew. Energy, vol. 36, no. 8, pp. 2177–2188, 2011.
[56] A. P. H. Maerefat, “Passive cooling of buildings by using integrated earth to air heat exchanger and solar chimney,” Renew. Energy, vol. 35, no. 10, pp. 2316–2324, 2010.
[57] Incropera, Introduction to Heat transfer. 1996.
[58] “Engineering Toolbox,” 2009. [Online]. Available: https://www.engineeringtoolbox.com/prandtl-number-d_1068.html 9.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 09, PP. 310-313, September 2019
Temperature is a key driving force in hydrological cycle, defining the extent of climate change. It causes the alteration in hydrological cycle process, limiting and intensifying the rainfall, increasing the rate of evapotranspiration and changes the crop pattern and duration over a region. Its future analysis is utmost to cope with negative effects of climate change over a specified region. This study also investigates, the future temperature pattern over Gomal River Basin (GRB). To undertake the study, downscaled daily temperature data of four General Circulation Models (GCMS) namely; bcc_csm1_1_m, mpi_esm_mr, ncar_ccsm4 and ncc_noresm1_m and their ensemble mean were first compared and validated with observed data for the period of 1980-2005. After that, temperature was projected for the mid-century (2020-2060) for the Representative Concentration Pathways (RCPs) 4.5. The analysis were carried out based on the four seasons; winter (December-February), spring (March-May), summer (June-August) and autumn (September-November). The results indicate that, the basin temperature was accurately predicted by the ensemble mean of the four GCMs with R2 value of 0.9. All the GCMs projected a warming in future in all seasons. Winter warming is more compared to other seasons. Proper adaptation strategies are needed to cope with the adverse impacts of global warming in the basin.
[1] M.S. Khattak, A. Khan, M.A. Khan, W. Ahmad, S. Rehman, M. Sharif, and S. Ahmad, “Investigation of characteristics of hydrological droughts in Indus basin,”. Sarhad Journal of Agricultural, vol, 35(1), pp. 48-56, 2019. DOI:http://dx.doi.org/10.17582/journal.sja/2019/35.1.48.56
[2] IPCC, “Climate Change: The Physical Science Basis; Contribution of Working Group I to the Fifth Assessment Report of the Intergovern-mental Panel on Climate Change, ” Cambridge University Press: Cambridge, UK; New York, NY, USA,p. 1535, 2013.
[3] IPCC, “Climate change 2007: the Physical Science Basis. Contribution of Working Group I to the 4th Assessment Report of the Intergovernmental Panel on the climate change”. Cambridge and New York: Cambridge University Press, 2007. 996, 2007.
[4] S. Dhar, and A. Mazumdar, “Impacts of climate change under the threat of global Warming for an agricultural watershed of the Kangsabati River,” International Journal of Agricultural and Biosystems Engineering, vol. 3 (3), 2019.
[5] X. Xin, L. Zhang, J. Zhang, T. Wu, and Y. Fang, “Climate change projections over East Asia with BCC_CSM1.1 Climate Model under RCP Scenarios,” Journal of the Meteorological Society of Japan, vol. 91 (4), pp. 413-429, 2013. DOI:10.2151/jmsj.2013-401.
[6] H.X. Zheng, F.H. Chiew, S. Charles, and G. Podger, “Future climate and runoff projections across South Asia from CMIP5 global climate models and hydrological modelling. Journal of Hydrology,” Regional Studies, vol. 18, pp. 92-109, 2018.
[7] N. Rehman, M. Adnan, and S. Ali, “Assessment of CMIP5 climate models over South Asia and climate change projections over Pakistan under representative concentration pathways,” International Journal of Global Warming, vol. 16 (4), pp. 381–415, 2018.
[8] T.J. Zhou, and R.C. Yu, “Twentieth-century surface air temperature over China and the globe simulated by coupled climate models,” Journal of Climate. Vol. 19: pp. 5843-5858, 2006.
[9] Z.H. Jiang, J. Song, and L. Li, W. Chen, Z. Wang, and J. Wang, “Extreme climate events in China: IPCC-AR4 model evaluation and projection,” Climatic Change, vol. 110, pp. 385-401, 2012.
[10] V.N. Dike, M.H. Shimizu, M. Diallo, Z. Lin, O.K. Nwofor, and T.C. Chineke, “Modelling present and future African climate using CMIP5 scenarios in HadGEM2-ES” International Journal of Climatology, vol. 35 (8), pp. 1784-1799, 2014; DOI: 10.1002/joc.408.
[11] N. Khan, S. Shahid, K. Ahmed, T. Ismail, N. Nawaz, and M. Son, "Performance assessment of General Circulation Model in simulating daily precipitation and temperature using multiple gridded datasets” Water, vol. 10, pp. 1793, 2018. DOI: 10.3390/w10121793.
[12] K.E. Taylor, R.J. Stouffer, and G.A. Meehl, “An overview of CMIP5 and the experiment design” Bulletin of the American Meteorological Society, vol. 93: pp. 485-498, 2012; DOI:10.1175/BAMS-D-11-00094.1.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 09, PP. 305-309, September 2019
Pt-less electrocatalysts for the assistance in Oxygen Reduction Reaction, elucidating at the cathode of PEMFC have been widely researched. To be considered as an alternative this research work focuses two different classes of Non-Precious Group Metals (Non-PGM),carbon base supports and Metal Organic Frameworks have been synthesized and tested for ORR characteristics i.e Cobalt doped Graphitic Carbon Nitrides (Co-C3N4) and Zeolitic Imidazole Framework with iron as a dopant i.e Fe+2. Potentiodynamic steady state convectively diffusing the reacting material within the electrolyte is employed at varying rpm to attain Linear Sweep Voltammograms at 20 mV.s-1 in 0.1M KOH and 0.1 HCLO4 electrolytes are obtained at 400, 800,1200 and 1600 rpm. Charge transfer number is obtained, showing the rate determining step of the reaction kinetics of transport of ionic species in the Oxygen reduction.
[1] Tabbi et al, Fuel cells in stationary and portable fuel cell applications.International journal of hydrogen energy.41 (2016)
[2] Wroblowa H et al, Adsorption and kinetics at platinum electrodes in the presence of oxygen at zero net current. J Electroanal Chem 1967; 15: 139–50.
[3] Wang Junye. Barriers of scaling-up fuel cells: cost, durability and reliability. Energy 2015;80:509e21
[4] Jiujun Zhang et al.PEM Fuel Cell Electrocatalysts and Catalyst Layers: fundamentals and
applications. Springer,2008.
[5] Raza R et al, 2005.Kordesch K, Simader G. Fuel cells and their applications VCH; 1996.
[6] Parthasarathy A et al, J Electrochem Soc 1992; 139: 2530–7.
[7] Fuel Cell Technical Team Roadmap, US drive road map, http://www1.eere.energy.gov/vehiclesandfuels/pdf, 2013
[8] R. Borup, et al., Scientific Aspects of Polymer Electrolyte Fuel Cell Durability and Degradation">Scientific Aspects of Polymer Electrolyte Fuel Cell Durability and Degradation Chem. Rev.,107, 3904-3951, 2007.
[9] Raza R et al, Fuel cell technology for sustainable development in Pakistan – An over-view. Renewable and Sustainable Energy Reviews 53 (2016) 450–461.
[10] Damjanovic A, Bockris JO’M. The rate constants for oxygen dissolution on bare and oxide-covered platinum. Electrochim Acta 1966; 11: 376–7.
[11] Yao Nie, Li Li and Zidong Wei. Recent Advancements of Pt and Pt-free Catalysts for Oxygen Reduction Reaction. Chemical Society Reviews. DOI: 10.1039/x0xx00000x
[12] Kim TK1 et al .Nanoporous metal oxides with tunable and nanocrystalline frameworks via conversion of metal-organic frameworks. J Am Chem Soc. 2013 Jun19;135(24):8940-6. doi: 10.1021/ja401869h.
[13] H. T. Chung et al, Polymer Electrolyte Fuel Cells. Electrochem. Commun., 2010, 12,1792–1795.
[14] L. Chong et al, Investigation of Oxygen Reduction Activity of Catalysts Derived from Co and Co/Zn Methyl‐Imidazolate Frameworks in Proton Exchange Membrane Fuel Cells .Chem Electro Chem, 2016, 3, 1541–1545.
[15] P. Gai et al., Efficient and selective aerobic oxidation of alcohols catalysed by MOF-derived Co catalysts. Mater. Chem. B, 1, 2742-2749, 2013.
[16] S.Phapan et al, Nitrogen-doped carbon nanotubes derived from Zn–Fe-ZIF nanospheres and their application as efficient oxygen reduction electrocatalysts with in situ generated iron species. Chem. Sci., 4, 2941, 2013
[17] B. Chen et al, Cobalt sulfide/N,S codoped porous carbon core–shell nanocomposites as superior bifunctional electrocatalysts for oxygen reduction and evolution reactions.Nanoscale, 2015, 7, 20674–20684.
[18] J. shui et al, Highly efficient nonprecious metal catalyst prepared with metal–organic framework in a continuous carbon nanofibrous network. 10.1073/pnas.1507159112, 2015.
[19] Chang H et al, Proceedings of the Symposium on Materials for Advanced Batteries and Fuel Cells. Solid State Ionics 2002; 148: 601–6
[20] Kim et al, Novel ordered nanoporous graphitic C3N4 as a support for Pt–Ru anode catalyst in direct methanol fuel cell.J. Mater. Chem. 17 (2007) 1656–1659.
[21] M.J. Bojdys et al, Ionothermal synthesis of crystalline, condensed, graphitic carbon nitride.Chem. Eur. J. 14 (2008) 8177–8182
[22] W. Zhang et al, Palladium nanoparticles supported on graphitic carbon nitride-modified reduced graphene oxide as highly efficient catalysts for formic acid and methanol electrooxidation, J. Mater. Chem. A 2 (2014) 19084–19094.
[23] Chan SH et al, A mathematical model of polymer electrolyte fuel cell with anode CO kinetics. Electrochim Acta 2003;48:1905–19.
[24] Kazuma Shinozaki et al, Oxygen Reduction Reaction Measurements on Platinum Electrocatalysts Utilizing Rotating Disk Electrode Technique. II. Influence of Ink Formulation, Catalyst Layer Uniformity and Thickness. Journal of The Electrochemical Society, 162 (12) F1384-F1396 (2015)
[25] Thacker R, Hoare JP. Sorption of oxygen from solution by noble metals: I. Bright platinum. J Electroanalysis Chem 1971; 30:1–14
[26] Yeager E. Dioxygen electrocatalysis: mechanisms in relation to catalyst structure. J Mol Catalyst 1986;38(1 2):5–25.
[27] Jiujun Zhang et al. PEM Fuel Cell Electrocatalysts and Catalyst Layers: fundamentals and applications. Springer,2008.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 09, PP. 300-304, September 2019
After maize and sugar cane, rice was ranked as third position as a horticultural commodity. At global level, majority of Asian countries produce and consume the rice. Disposing of rice husk is a big problem and needs attention. In the present study, three different techniques were compared for converting rice husk (RH) into rice husk ash (RHA). The RHA obtained by combustion in drum for 24 hours yielded maximum quantity 97.703 % of SiO2. Therefore, this method was adopted for further studies on samples collected from different regions (Charsada, Swat and Buner) of Province of Khyber Pakhtunkhwa (KPK), Pakistan. By comparing the contents of SiO2 obtained from combustion technique, the Charsada sample containing 97.073% of SiO2 was found best.
[1] Food and Agriculture Organization (FAO), the United Nations, Statistical Database, 2002.http://apps.fao.org.
[2] W. Khan, K. Shehzada, T. Bibi, S.U. Islam, S.W. Khan, Performance evaluation of Khyber Pakhtunkhwa Rice Husk Ash (RHA) in improving mechanical behavior of cement, Construction and Building Materials 176 (2018) 89–102.
[3] Economic Survey of Pakistan, Ministry of Planning and Development, Islamabad, 2009-2010.
[4] S.A. Memon, M.A. Shaikh, H. Akbar, Production of low cost self-compacting concrete using rice husk ash. In First International Conference on Construction in Developing Countries (ICCIDC-l), Advancing and Integrating Construction Education, Research & Practice, Karachi, Pakistan, 260-269 (2008).
[5] Development of Statistics of Khyber Pakhtunkhwa, Bureau of Statistics
Planning & Development Department Government of Khyber Pakhtunkhwa, Pakistan (2017). www.kpbos.gov.pk.
[6] S. Wansom, S., Janjapuraphan, S. Sinthupinyo, Characterizing pozzolanic activity of rice husk ash by impedance spectroscopy, Cement and Concrete Research, 40 (2010) 1714-1722.
[7] C.B. Majumder, M. Sharma, G. Soni, A simple non-conventional method to extract amorphous silica from rice husk. Bioresource Technology, accepted 28 April (2014).
[8] I.J. Fernandes, D. Calheiro, F.A.L. Sánchezb, A.L.D. Camacho, Characterization of Silica Produced from Rice Husk Ash: Comparison of Purification and Processing Methods, Materials Research. 20(Suppl. 2) (2017) 512-518.
[9] D.G. Nair, K.S. Jagadish, A. Fraaij, Reactive pozzolanas from rice husk ash : An alternative to cement for rural housing, 36 (2006) 1062–1071. https://doi.org/10.1016/j.cemconres.2006.03.012.
[10] L.A. Bui, C. Chen, C. Hwang, W. Wu, Effect of silica forms in rice husk ash on the properties of concrete. International Journal of Minerals, Metallurgy and Materials 19(3) (2012) 252–258. https://doi.org/10.1007/s12613-012-0547-9.
[11] V.P. Della, I. Ku¨hn, D. Hotza, Rice husk ash as an alternate source for active silica production, Materials Letters 57 (2002) 818–821.
[12] R.M. Ferraro, A. Nanni, A. (2012). Effect of off-white rice husk ash on strength, porosity, conductivity and corrosion resistance of white concrete, Construction and Building Materials 31 (2012) 220–225.
[13] Muthadhi, S. Kothandaraman, Optimum production conditions for reactive rice husk ash, Materials and Structures 43(9) (2010) 1303–1315.
[14] R. Khan, A. Jabbar, I. Ahmad, W. Khan, A.N. Khan, J. Mirza, Reduction in environmental problems using rice-husk ash in concrete, Construction and Building Materials 30 (2012) 360-365.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 09, PP. 292-299, September 2019
The Friction plug welding (FPW), is a kind of process to join the two dissimilar/similar materials and no external heat is applied or no molten state involved. As no melting occurs, friction welding is not a kind of fusion welding process, but more than a counterfeit welding technique. The joint efficiency may be increased by interpolating heat source or pre-heating at the workpiece surface. The generation of heat flux at the mean surface is calculated by friction during the materials to consider the friction co-efficient. By changing the diameter of the plug, the land width can be changed to get an impact on the temperature profile. Mathematical and Analytical modeling has computed the impact of pre-heating. The temperature distribution values during the workpiece were computed for various plug diameters with various pre-heating temperature values from 250ºC-550ºC.
Preetam: College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Yan Chongjing: College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China Preetam and Yan Chongjing
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 09, PP. 288-291, September 2019
This study presents one of the first analyses carried out on solar energy resource measurement using meteorological station established at University of Engineering and Technology (UET) Peshawar by World Bank under Energy Sector Management Assistance Program (ESMAP). Ground based direct normal irradiance (DNI) and global horizontal irradiance (GHI) were measured and analyzed for year 2017 and then compared with the data of satellite based solar model called SUNY. Ground based data was measured with the help of Kipp & Zonen CMP10 Pyranometer and Twin sensor Rotating Shadowband Irradiometer (RSI). Data of satellite based solar model (SUNY) was based on daily total monthly mean averaged over 15 years, starting from 2000 till 2014. The maximum value of ground based GHI was found for the month of June which was 6,415 Wh/m2 and minimum GHI was found for the month of December which was 1,605 Wh/m2. On the other hand, highest DNI was recorded in the month of April which was 5,884 Wh/m2 and lowest DNI was recorded in the month of January which was 1,718 Wh/m2. Comparison of the data showed higher values of GHI and DNI for satellite based model (SUNY) in most of the months. In February, March and April, ground based GHI and DNI were overestimated compared to satellite based model. Maximum difference of 1,346 Wh/m2 in GHI was noticed in November and minimum difference of -181 Wh/m2 was recorded in the month of March. On the other hand, maximum difference of 2,348 Wh/m2 in DNI was observed in the month of November and a minimum difference of -140 Wh/m2 was seen in March. This study will be helpful in further assessment of solar energy resource at any location in Pakistan as it will provide help for base-line studies. Moreover, it will also help in establishing any solar energy program particularly concentrating solar power (CSP) in Pakistan.
[1] S. AlYahya and M. A. Irfan, "Analysis from the new solar radiation Atlas for Saudi Arabia," Solar Energy, vol. 130, pp. 116-127, 2016.
[2] A. F. Almarshoud, "Performance of solar resources in Saudi Arabia," Renewable and Sustainable Energy Reviews, vol. 66, pp. 694-701, 2016.
[3] S. G. Erica Zell, Stephen Wilcox, Suzan Katamoura, Thomas Stoffel, Husain Shibli, Jill Engel-Cox, Madi Al Subie, "Assessment of solar radiation resources in Saudia Arabia," Solar Energy, vol. 119, pp. 422-438, 2015.
[4] C. C. Rodrigo A.Escobar, Alan Pino, Enio Bueno Pereira, Fernando Ramos Martins, José Miguel Cardemil, "Solar energy resource assessment in Chile: Satellite estimation and ground station measurements," Renewable Energy, vol. 71, pp. 324-332, 2014.
[5] P. P. S. Janjai, J. Laksanaboonsong, "A model for calculating hourly global solar radiation from satellite data in the tropics," Applied Energy, vol. 86, pp. 1450-1457, 2009.
[6] (May 15). Where is Peshawar, Pakistan? Available: https://www.worldatlas.com/as/pk/kp/where-is-peshawar.html
[7] B. E. P. Blanc, N. Geuder, C. Gueymard, R. Meyerd, R. Pitz-Paal, B. Reinhardt, D. Renné, M. Sengupta, L. Wald, S. Wilbert, "Direct normal irradiance related definitions and applications: The circumsolar issue," Solar Energy, vol. 110, pp. 561-577, 2014.
[8] P. J. Yang Dazhi, Wilfred M.Walsh, "The Estimation of Clear Sky Global Horizontal Irradiance at the Equator," in Energy Procedia, 2012, pp. 141-148.
[9] (May 24). Solar Resource Mapping. Available: https://www.aedb.org/ae-technologies/solar-power/solar-resources
[10] (May 21). International Data. Available: https://nsrdb.nrel.gov/international-datasets
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 09, PP. 280-287, September 2019
This paper gives a brief review of the concept of sensor networks which has become feasible due to large scale development in micro electro-mechanical systems technology and wireless communications. First of all, sensor node deployment and sensor networks applications are presented, and then various issues regarding sensor node lifetime are discussed. Then, to solve sensor node issues, various energy conservation techniques, their advantages and limitations are discussed. The energy conservation techniques are compared using MATLAB and best routing protocol is shown. Lastly, wireless power transfer to replenish sensor node battery is discussed. A review of wireless power transfer history and various development in this technology is also given to solve the energy issue of sensor node. Research issues for efficiency improvement of wireless sensor network are also discussed.
I.F. Akyildiz, W. Su, Y. Sankarasubramaniam, E. Cayirci, “Wireless sensor networks: a survey,” Computer Networks 38 (2002) 393–422.
Xuxun Liu, “A Survey on Clustering Routing Protocols in Wireless Sensor Networks,” Vol.12, 2012, pp. 11113-11153.
Ian F. Akyildiz, Weilian Su, Yogesh Sankarasubramaniam, and Erdal Cayirci, “A Survey on Sensor Networks,” IEEE Communications Magazine • August 2002.
David Culler, Deborah Estrin, Mani Srivastava,“Overview of Sensor Networks,”Published by the IEEE Computer Society August 2004.
Nikolaos A. Pantazis, Stefanos A. Nikolidakis and Dimitrios D. Vergados, “Energy-Efficient Routing Protocols in Wireless Sensor Networks: A Survey,” IEEE Communications Surveys and Tutorials.
Chunjuan Wei, Junjie Yang, Yanjie Gao, Zhimei Zhang, “Cluster-based Routing Protocols in Wireless Sensor Networks: A Survey,” 2011 International Conference on Computer Science and Network Technology.
Ahmed Badi, Imad Mahgoub, Fadi Sibai, “Impact of Transmission-related Parameters on the Energy Performance of Cluster-based Routing Protocols for Wireless Sensor Networks,” 2011 International Conference on Innovations in Information Technology.
Guangyan Huang, Xiaowei Li, Jing He, “Energy-Efficiency Analysis of Cluster-Based Routing Protocols in Wireless Sensor Networks,” IEEEAC paper #1088, Version 6, Updated Nov. 21, 2005.
W. Heinzelman, A. Chandrakasan, and H. Balakrishnan, “Energy-Efficient Communication Protocol forWireless Microsensor Networks,” Proceedings of the 33rd Hawaii International Conference on System Sciences – 2000.
Li Qing , Qingxin Zhu, Mingwen Wang, “Design of a distributed energy-efficient clustering algorithm for heterogeneous wireless sensor networks,” Computer Communications 29 (2006) 2230–2237.
G. Smaragdakis, I. Matta, A. Bestavros, “SEP: A Stable Election Protocol for clustered Heterogeneous wireless sensor networks,” Proceedings of 2nd International Workshop on Sensor and Actor Network Protocol and Applications (SANPA), Boston, U.S.A, 2004, pp. 1-11.
Manjeshwar, E.; Agrawal, D.P., “TEEN: A Routing Protocol for Enhance Efficiency in Wireless Sensor Networks,” In Proceedings of the 15th International Parallel and Distributed Processing Symposium (IPDPS), San Francisco, CA, USA, 23–27 April 2001; pp. 2009–2015.
Bencan Gong Tingyao Jiang, “A Tree-Based Routing Protocol in Wireless Sensor Networks,” 978-1-4244-8165-1/11/$26.00 ©2011 IEEE.
S. Lindsey and C. Raghavendra: PEGASIS: Power- Efficient Gathering in Sensor Information Systems. IEEE Aerospace Conference Proceedings (2002) 1125-1130.
Yang Peng, Zi Li, Wensheng Zhang, and Daji Qiao, “Prolonging Sensor Network Lifetime through Wireless Charging,” 2010 31st IEEE Real-Time Systems Symposium.
Liguang Xie, Yi Shi, Y. Thomas Hou and Hanif D. Sherali, “Making Sensor Networks Immortal: An Energy-Renewal Approach With Wireless Power Transfer,” IEEE/ACM Transactions on Networking, Vol. 20, No. 6, December 2012.
Yinggang Bu, Masahiro Nishiyama, Takuto Ueda, Yoshimi Tashima, and Tsutomu Mizuno, “Examination of Wireless Power Transfer Combined With the Utilization of Distance Detection,” IEEE Transactions on Magnetics, Vol. 50, No. 11, November 2014.
Liguang Xie, Yi Shi, Y. Thomas Hou, Wenjing Lou, Hanif D. Sherali, and Scott F. Midkiff, “Multi-Node Wireless Energy Charging in Sensor Networks,” IEEE/ACM Transactions on Networking, Vol. 23, No. 2, April 2015.
Liguang Xie, Yi Shi, Y. Thomas Hou, Andwenjing Lou, “Wireless Power Transfer and Applications to Sensor Networks,” IEEE Wireless Communications • August 2013.
Xiao Lu, Ping Wang, Dusit Niyato, Dong In Kim, and Zhu Han, “Wireless Networks with RF Energy Harvesting: A Contemporary Survey,” arXiv:1406.6470v6 [cs.NI] 5 Sep 2014.
Melike Erol-Kantarci and Hussein T. Mouftah, University of Ottawa “SuReSense: Sustainable Wireless Rechargeable Sensor Networks for the Smart Grid,” IEEE Wireless Communications • June 2012.
Vehbi C. Gungor, Bin Lu and Gerhard P. Hancke, “Opportunities and Challenges of Wireless Sensor Networks in Smart Grid,” IEEE Transactions on Industrial Electronics, Vol. 57, No. 10, October 2010.
Silvia Jimenez-Fernandez, Paula de Toledo and Francisco del Pozo,“Usability and Interoperability in Wireless Sensor Networks for Patient Tele-monitoring in Chronic Disease Management,” IEEE Transactions on Biomedical Engineering, Vol. 60, No. 12, December 2013.
Hamid Jabbar, Young. S. Song, Taikyeong Ted. Jeong, “RF Energy Harvesting Systemand Circuits for Charging of Mobile Devices,” IEEE Transactions on Consumer Electronics, Vol. 56, No. 1, February 2010.
A. Kansal, D. Potter, and M. B. Srivastava, “Performance aware tasking for environmentally powered sensor networks,” SIGMETRICS Perform. Eval. Rev., 32(1):223–234, 2004.
C. Park and P. Chou, “Ambimax: Autonomous energy harvesting platform for multi-supply wireless sensor nodes,” In SECON ’06, pages 168–177, Sept. 2006.
S. M. Jose, J. O. Mur-mir, R. Amirtharajah, A. P. Ch, and J. H. Lang, “Vibration-to-electric energy conversion. IEEE Transactions on Very Large-scale Integration (VLSI) Systems,” 9(1):64–76, Feb 2001.
A. Kurs, A. Karalis, R. Moffatt, J. D. Joannopoulos, P. Fisher, and M. Soljacic, “Wireless power transfer via strongly coupled magnetic resonances,” Science, vol. 317, no. 5834, pp. 83–86, 2007.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6 Issue 09 PP. 275-279 September 2019
Low frequency oscillations are one of the major causes which reduce the capabilities of power system. Low frequency oscillations (LFO) have taken the attention of engineers therefore different techniques are introduced. This paper will help out to damp low frequency oscillations using one of the best and effective technique i.e. Power system stabilizer (PSS). Since among various techniques power system stabilizer has taken the attention by working effectively to damp low frequency harmonics. The model will is implemented using Simulink and the graphical results are analyzed and compared. The system efficiency is improved up to 82%, by employing power system stabilizer.
F. Maury, Summary of the answers to the questionnaire on the dynamic performances of future power system, CIGRE, Electra, pp. 87-100, 1975
J. H. Chow and J. J. Sanchez-Gasca, Pole-Placement Designs of Power System Stabilizers, IEEE Transactions on Power Systems, Vol. 4, No. 1, February 1989.
M. A. Abido and Y. L. Abdel-Magid, Robust design of electrical power-based stabilizers using Tabu search, Power Engineering Society Summer Meeting, Vol. 3, pp. 1573-1578, 2001.
P. Kundur, Power System Stability and Control. New York: McGraw- Hill, 1994.
K. T. Law et. al, Robust Co-ordinated AVR-PSS Design, IEEE Transactions on Power Systems, Vol. 9, No. 3, August 1994
P. S. hamsollahi, Neural Adaptive Power System Stabilizer, Thesis at University of CALGARY, CALGARY, ALBERTA, July, 1997
G. Rogers, Power System Oscillations. Boston, MA: Kluwer, 2000.
K.. Hongesombut, and Y. Mitani: Implementation of Advanced Genetic Algorithm to Modern Power System Stabilization Control, Power Systems Conference and Exposition, pp. 1050-1055 vol.2, 2004 .
G. R. Bérubé, L. M. Hajagos, and R. Beaulieu, “Practical utility experience in application of power system stabilizers,” in Proc. IEEE PESSummer Meeting, vol. 1, Jul. 1999, pp. 104–109.
C. W. Taylor, “Improving the grid behavior,” IEEE Spectrum, vol. 36, no. 6, Jun. 1999.
C. W. Taylor, C. Erickson, K. E. Martin, R. E. Wilson, and V. Venkatasubramanian, “WACS-wide-area stability and voltage control system: R&D and on-line demonstration,” Proc. IEEE, submitted for publication.
N. Martins, A. A. Barbosa, J. C. R. Ferraz, M. G. dos Santos, A. L. B. Bergamo, C. S. Yung, V. R. Oliveira, and N. J. P. Macedo, “Retuning stabilizers for the North-South Brazilian interconnection,” in Proc. IEEEPES Summer Meeting, vol. 1, Jul. 1999, pp. 58–67.
A. Fischer and I. Erlich, “Impact of long-distance power transits on the dynamic security of large interconnected power systems,” Proc. 2001IEEE Power Tech. Conf., vol. 2, p. 6, Sep. 2001.
L. Gérin-Lajoie, D. Lefebvre, M. Racine, L. Soulières, and I. Kamwa, “Hydro-Québec experience with PSS tuning,” panel on system reliability as affected by power system stabilizers,” in Proc. IEEE PESSummer Meeting, vol. 1, Jul. 1999, pp. 88–95.
D. M. L. Crenshaw, C. J. Bridenbauch, A. Murdoch, R. A Lawson, and M. J. D’Antonio, “Microprocessor-based power system stabilizer anddisturbance recorder,” presented at the IEEE Joint Power Generation Conference, Chicago, IL, Mar. 1991.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 09, PP. 269-274, September 2019
In this article, rectangular shape Micro strip Patch Antenna (MPA) with cut edges is proposed at 2.4 GHz for ISM and Wi-Fi application. The proposed antenna is designed on fr-4 material having standard thickness of (h=1.6mm), relative permittivity (ɛr= 4.3) and loss tangent 0.02. PEC is used as a conducting element for radiating patch and ground plane. The volume of proposed antenna is 58 x 58 x 1.6 mm3. The proposed antenna resonates at 2.4 GHz having return loss -21dB, gain 3.14dB and efficiency 41%. For achieving good performance of antenna 4 x 4 Electromagnetic Bandgap (EBG) structure is used. By utilizing EBG structure as a ground plane a discernible improvement occur in the performance of proposed antenna. Proposed antenna with EBG structure gives gain up to 68.14dB, return loss -32dB and efficiency 85%. The antenna and mushroom type EBG is designed and simulate in CST microwave studio.
[1] Raval, Falguni, Y. P. Kosta, and Harshita Joshi. "Reduced size patch antenna using complementary split ring resonator as defected ground plane." AEU-International Journal of Electronics and Communications 69.8 (2015): 1126-1133.
[2] Veselago VG. The electrodynamics of substances with simultaneously negative values of and ε. Sov Phys Usp 1968;10:509–14
[3] Cui Tie Jun, Smith David, Liu Ruopeng. Metamaterials: theory, design, and applications. Springer Science & Business Media, Technology & Engineering; Oct,2009. p. 1–2.
[4] Marqués Ricardo, Martín Ferran, Sorolla Mario. Metamaterials with negative parameters: theory, design and microwave applications. John Wiley& Sons –Technology & Engineering; Sep, 2011
[5] A. Basir, S. Ullah, M. Zada, and S. Faisal. "Design of efficient and
flexible patch antenna using an electromagnetic band gap (EBG) ground
plane." . In IEEE International Conference on Open Source Systems and
Technologies (ICOSST), 2014, pp. 1-5.
[6] Nacer Chahat, Maxim Zhadobov, Ronan Sauleau, and Kouroch
Mahdjoubi. "Improvement of the on-body performance of a dual-band
textile antenna using an EBG structure." In Antennas and Propagation
Conference (LAPC), Loughborough, IEEE,pp. 465-468., 2010.
[7] MD. Ashikur Rahman, Moinul Hossain, Ibnul Sanjid Iqbal, and Syed
Sobhan. "Design and performance analysis of a dual-band microstrip
patch antenna for mobile WiMAX, WLAN, Wi-Fi and bluetooth
applications." In Informatics, Electronics & Vision (ICIEV),
International Conference on, IEEE ,pp. 1-6, 2014
[8] H.S. Zhang, K. Xiao, L. Qiu, and S. L. Chai. "Wide band e-shape
wearable antenna for wireless body area network." In IEEE International
Wireless Symposium (IWS), 2014, pp. 1-4
[9] Priyanarayan Misra, and Amaresh Tripathy. "Triple Band Planar
Antenna for Wireless Communication." International Journal of
Computer Applications 48, vol. 23, pp. 28-30, 2012
[10] R. Dewan M. K. A. Rahim M. R. Hamid H. A. Majid M. F. M. Yusoff M. E. Jalil "Reconfigurable antenna using capacitive loading to Artificial Magnetic Conductor (AMC)"Microwave and Optical Technology Letters, vol. 58 pp. 2422-2429 2016.
[11] A. B. Jagadeesan A. Alphones M. F. Karim L. C. Ong "Metamaterial based reconfigurable multiband antenna" 2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, pp. 2389-2390 2015.
[12] Behera, Bikash Ranjan and Priyadarshi Suraj. “Rectangular microstrip patch antenna for wireless fidelity application: Design of a Wi-Fi antenna using the concept of metamaterials.” 2016 IEEE International Conference on Recent Trends in Electronics, Information & Communication Technology (RTEICT) (2016): 1933-1937.
[13] Ali, Usman & Ullah, Sadiq & , Haroon. (2016). Design and Analysis of a 2.4 GHz Antenna using Metamaterial Ground Planes for Body Worn Wireless Applications. Bahria University Journal of Information & Communication Technologies (BUJICT). 9.
[14] Smyth, Braden P. et al. “Dual-Band Microstrip Patch Antenna Using Integrated Uniplanar Metamaterial-Based EBGs.” IEEE Transactions on Antennas and Propagation 64 (2016): 5046-5053.
[15] Aravind, V.S. & Gupta, Shilpi. (2015). Compact EBG ground plane microstrip antenna for high gain applications. 10.1109/ET2ECN.2014.7044963.
[16] C.A.Balanis, antenna theory: Design and Analysis, Second edition, pages 722-736 to 869-870, John Wiley and Sons, 1997.
[17] Rahmat-Samii, Yahya, and H. Mosallaei. "Electromagnetic band-gap structures: classification, characterization, and applications." (2001): 560-564.pp
[18] Sievenpiper, Dan, et al. "High-impedance electromagnetic surfaces with a forbidden frequency band." IEEE Transactions on Microwave Theory and techniques 47.11 (1999): 2059-2074.
[19] Rahmat-Samii, Yahya, and H. Mosallaei. "Electromagnetic band-gap structures: classification, characterization, and applications." (2001): 560-564 DOI10.1049/ CP 20010350.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 08, PP. 258-268, August 2019
In this paper five different control strategies for grid tie inverter in PV based DG systems have been implemented in MATLAB/Simulink for comparative analysis puropose to evaluate the performance. The control strategies are “inner loop PI controller with outer loop PI controller in NRF”, “Inner loop PI controller with outer loop PI controller in SRF”, “inner loop PR controller with outer loop PI controller”, “inner loop Hysteresis controller with outer loop PI controller”, “inner loop Repetitive controller with outer loop PI controller”. The performance have been evaluated in both static and dynamic conditions and from the results it is evident that PI controller in SRF, PR controller and Repetive controller perform best in both static conditions as well as in case of disturbances coming in either from PV side or grid side.
[1] European Photovoltaic Industry Association, “Global market outlook– for photovoltaics 2014 2018,” EPIA, Tech. Rep., Jun. 2014, ISBN 9789082228403.
[2] Ned Mohan, Tore M. Undeland, and William P. Robbins, Power Electronics, 2nd ed., pp. 23, 241, and 726, John Wiley & Sons, Inc., New York, 1995. [3] Athari, Hamed, Mehdi Niroomand, and Mohammad Ataei. "Review and classification of control systems in grid-tied inverters." Renewable and Sustainable Energy Reviews 72 (2017): 1167-1176
[4] Teodorescu R, Blaabjerg F, Liserre M, Loh PC. Proportional-resonant controllers and filters for grid-connected voltage-source converters. IEEE Proc Electr Power Appl 2006;153(5):750–62, [Sept.]. [5] Chatterjee, Aditi, and Kanungo Barada Mohanty. "Current control strategies for single phase grid integrated inverters for photovoltaic applications-a review." Renewable and Sustainable Energy Reviews 92 (2018): 554-569.
[6] Komurcugil H. Rotating-sliding-line-based sliding-mode control for single-phase UPS inverters. IEEE Trans Ind Electron 2012;59(10):3719–26, [Oct.].
[7] Krismadinata C, Rahim NA, Selvaraj J. Implementation of hysteresis current control for single-phase grid connected inverter. In: Proceedings 7th International Conference on Power Electronics and Drive Systems, Bangkok; 2007. p. 1097–1101.
[8] Dahono PA. New hysteresis current controller for single-phase full-bridge inverters. IET Power Electron 2009;2(5):585–94.
[9] Yao Z, Xiao L. Control of single-phase grid-connected inverters with nonlinear loads. IEEE Trans Ind Electron 2013;60(4):1384–9.
[10] Elsaharty MA, Hamad MS, H. A. Ashour HA. Digital hysteresis current control for grid-connected converters with LCL filter. In: - Proceedings 37th Annual Conference of the IEEE Industrial Electronics Society (IECON), Melbourne, VIZ; 2011. p. 4685–4690.
[11] Ichikawa R, Funato H, Nemoto K. Experimental verification of single-phase utility interface inverter based on digital hysteresis current controller. In: Proceedings International Conference on Electrical Machines and Systems.
[12] Damen A, Weiland S. Robust Control. Measurement and Control Group Department of Electrical Engineering Eindhoven University of Technology P.O. Box 513, Draft version, July 2002.
[13] Zames G. Feedback and optimal sensitivity: model reference transformations, multiplicative seminorms, and approximate inverses. IEEE Trans Autom Control 1981:301–20.
[14] Hornik T, Zhong Q Ch. A current-control strategy for voltage-source inverters in microgrids based on H∞ and repetitive control. IEEE Trans Power Electron 2011;26(3), [March].
[15] Abu-Rub H, Guzin´ski J, Krzeminski Z, Toliyat HA. Predictive current control of voltage-source inverters. IEEE Trans Ind Electron 2004;51(3), [Jun.].
[16] Moreno JC, Huerta JME, Gil RG, Gonzalez SA. A robust predictive current control for three phase grid-connected inverters. IEEE Trans Ind Electron 2009;56(6):1993–2004, [Jun.].
[17] Bojoi R, Limongi LR, Roiu D, Tenconi A. Enhanced power quality control strategy for single-phase inverters in distributed generation systems. IEEE Trans Power Electron 2011;26(3):798–806, [March].
[18] de Almeida PM, Duarte JL, Ribeiro PF, Barbosa PG. Repetitive controller for improving grid connected photovoltaic systems. IET Power Electron 2014;7(6):1466–74, [June].
[19] Ramos C, Martins A, Carvalho A. Complex state-space current controller for grid connected converters with an LCL filter. In: 35th Annual conference of IEEE industrial electronics, IECON 09. 2009. pp. 296–301.
[20] Passino KM. Intelligent control: anan overview of techniques. Department of Electrical Engineering, Ohio State University; 2015.
[21] Wang X, Blaabjerg F, Chen Z. Autonomous control of inverter-interfaced distributed generation units for harmonic current filtering and resonance damping in an islanded microgrid. IEEE Trans Ind Appl 2014;50(1):452–61, [Jan.- Feb.].
[22] Lin FJ, Ch. Lu K, Ke TH. Probabilistic Wavelet Fuzzy Neural Network based reactive power control for grid-connected three-phase PV system during grid faults. Renew Energy 2016;92:437 49, [July].
International Journal of Engineering Works Vol. 6, Issue 08, PP. 258-268, August 2019
www.ijew.io
[23] Kyoungsoo R, Rahman S. Two-loop controller for maximizing performance of a grid-connected photovoltaic-fuel cell hybrid power plant. IEEE Trans Energy Convers 1998;13(3):276–81, [Sep].
[24] Niroomand M, Karshenas HR. Review and comparison of control methods for uninterruptible power supplies. In: 1st power electronic and drive systems and technologies conference, 2010.
[25] Eren S, Pahlevani M, Bakhshai A, Jain P. An adaptive droop DC-bus voltage controller for a grid-connected voltage source inverter with LCL filter. IEEE Trans Power Electron 2015;30(2):547–60, [Feb.].
[26] Zhong QC, Hornik T. Control of power inverters in renewable energy and smart grid integration. John Wiley & Sons; 2013.
[27] M. Liserre, F. Blaabjerg and S. Hansen. “Design and control of an LCL-filter based three-phase active rectifier. Industry Applications, IEEE Transactions vol. 41, no. 5, 1281-1291, 2005.
[28] Damen A, Weiland S. Robust Control. Measurement and Control Group Department of Electrical Engineering Eindhoven University of Technology P.O. Box 513, Draft version, July 2002.
[29] Zmood, D.N.; Holmes, D.G. Stationary frame current regulation of PWM inverters with zero steady-state error. IEEE Trans. Power Electron. 2003, 18, 814–822.
[30] Wei Gu and Issa Batarseh, "Interleaved synchronous buck regulator with hysteretic voltage control," 2001 IEEE 32 Annual Power Electronics Specialists Conference,Vol. 3, pp. 1512–1516, 2001.
[31] Youqing Wang, Furong Gao, and Francis J. Doyle. Survey on iterative learning control, repetitive control, and run-to-run control. J. Process Control, 19(10):1589{1600, 2009.
[32] Yongheng Yang, Keliang Zhou, and Frede Blaabjerg. Harmonics suppression for single phase grid-connected PV systems in different operation modes. 2013 Twenty-Eighth Annu. IEEE Appl. Power Electron. Conf. Expo., pages 889{896, mar 2013.
[33] Youqing Wang, Furong Gao, and Francis J. Doyle. Survey on iterative learning control, repetitive control, and run-to-run control. J. Process Control, 19(10):1589{1600, 2009.
[34] X. Lu and J. Wang, “A Game Changer: Electrifying Remote Communities by Using Isolated Microgrids,” IEEE Electrif. Mag., vol. 5, no. 2, pp. 56–63, 2017.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 08, PP. 253-257, August 2019
Due to the environmental concerns the focus is on clean energy generation globally. Hydrokinetic is one such emerging technology that is clean and abundantly available in Pakistan. Also we have energy crises so in areas where these resources are abundant if fed from locally generated electricity, the load on central grid can be reduced. This paper focuses on a battery-less system for hydrokinetics. PMSG is used and then a rectifier to convert its output to DC. This changing DC is then converted to a fixed 12 volts and regulated. Eliminating storage the output of this converter is fed to a UPS which changes it to alternating current of fixed voltage and frequency.
[1] Dudley, Bob. "BP statistical review of world energy." London, UK (2012).
[2] Hartwick, John M. "Natural resources, national accounting and economic depreciation." Journal of public Economics 43.3 (1990): 291-304.
[3] Awan, Ahmad Bilal, and Zeeshan Ali Khan. "Recent progress in renewable energy–Remedy of energy crisis in Pakistan." Renewable and Sustainable Energy Reviews 33 (2014): 236-253.
[4] Khalil, Hafiz Bilal, and Syed Jawad Hussain Zaidi. "Energy crisis and potential of solar energy in Pakistan." Renewable and Sustainable Energy Reviews 31 (2014): 194-201.
[5] Asif, Muhammad. "Energy crisis in Pakistan: Origins, challenges, and sustainable solutions." OUP Catalogue (2012).
[6] Masood, Muhammad Tahir, and Fawad Shah. "Dilemma of third world countries-problems facing pakistan energy crisis a case-in-point." International Journal of Business and Management 7.5 (2012): 231.
[7] Yazhou, Lei. "Studies on wind farm integration into power system [J]." Automation of Electric Power Systems 27.8 (2003): 84-89.
[8] Bhutta, Muhammad Mahmood Aslam, et al. "Vertical axis wind turbine–A review of various configurations and design techniques." Renewable and Sustainable Energy Reviews 16.4 (2012): 1926-1939.
[9] Shakeel, Shah Rukh, Josu Takala, and Waqas Shakeel. "Renewable energy sources in power generation in Pakistan." Renewable and Sustainable Energy Reviews 64 (2016): 421-434.
[10] Rauf, Omer, et al. "An overview of energy status and development in Pakistan." Renewable and Sustainable Energy Reviews 48 (2015): 892-931.
[11] Kusakana, Kanzumba, and Herman Jacobus Vermaak. "Hydrokinetic power generation for rural electricity supply: Case of South Africa." Renewable energy 55 (2013): 467-473.
[12] Behrouzi, Fatemeh, et al. "Global renewable energy and its potential in Malaysia: A review of Hydrokinetic turbine technology." Renewable and Sustainable Energy Reviews 62 (2016): 1270-1281.
[13] Chica, E., et al. "Design of a hydrokinetic turbine." WIT Trans. Ecol. Environ 195 (2015): 137-148.
[14] Lago, L. I., F. L. Ponta, and L. Chen. "Advances and trends in hydrokinetic turbine systems." Energy for sustainable development 14.4 (2010): 287-296.
[15] De Battista, Hernan, Ricardo J. Mantz, and Carlos F. Christiansen. "Dynamical sliding mode power control of wind driven induction generators." IEEE Transactions on Energy Conversion 15.4 (2000): 451-457.
[16] Malinowski, Mariusz, Marian P. Kazmierkowski, and Andrzej M. Trzynadlowski. "A comparative study of control techniques for PWM rectifiers in AC adjustable speed drives." IEEE Transactions on power electronics 18.6 (2003): 1390-1396.
[17] Hansen, Anca D., and Gabriele Michalke. "Modelling and control of variable‐speed multi‐pole permanent magnet synchronous generator wind turbine." Wind Energy: An International Journal for Progress and Applications in Wind Power Conversion Technology 11.5 (2008): 537-554.
[18] Barnes, Arthur K., Juan C. Balda, and Corris M. Stewart. "Selection of converter topologies for distributed energy resources." 2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2012.
[19] Nishijima, K & Harada, K & Nakano, T & Nabeshima, Toshitaka & Sato, T. (2005). Analysis of Double Step-Down Two-Phase Buck Converter for VRM. 497 - 502. 10.1109/INTLEC.2005.335149.
[20] Wu, Wenkai, Nai-Chi Lee, and George Schuellein. "Multi-phase buck converter design with two-phase coupled inductors." Twenty-First Annual IEEE Applied Power Electronics Conference and Exposition, 2006. APEC06. IEEE, 2006.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 08, PP. 249-252, August 2019
The desire and required place for providing electricity i.e. Homes, industries, markets, etc. are far away from the place where electricity is produced (power stations). It results in low efficiency and also increases the cost. It has so many dis-advantages. It may also have environmental and security issues as well. The primary objective of this resaerch is to evaluate and reduces the percentage loss. The power loss is performed for different locations. The result shows the appropriation of distributed generator in to power system.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 08, PP. 244-248, August 2019
There is alot waste heat from power consuming companies. This waste heat is added to atmosphere, which is unusable and it adds to global warming. Most of energy sources are consumed by energy sectors. These sectors are energy spending sectors all over world. Consequently, they are answerable for the discharging huge quantity of heat to the atmosphere. This heat is called waste heat which is in form of hot exhaust gases or other hot discharges. Since high prices of sources and wastage of heat made us to think that to recover its energy. It will benefit us from two perspectives in which first one is decreasing carbon amount in discharges and second one is this energy is cheap. Moreover, decreasing the ecological impact. Heat recovery via thermoelectric modules enables us to recover the waste contents with energy. Thermoelectric generator (TEG) is a semiconductor device. TEG module is made which produce electrical voltages whenever thermal gradient is developed on its surfaces. The study of TEG performace is presented in this paper. Voltage, current and power produced are the performance charateristics of TEG. The increase and decrease of temperature difference on both the surfaces of TEG module will show the output results increasing and decreasing respectively [1].
BP. BP Statistical Review of World Energy 2014; Available from: http://www.bp.com/content/dam/bp/pdf/Energy-economics/statistical-review- 2014/BP- statistical-review-of-world-energy-2014-full-report.pdf
Fleurial, J.-P., Thermoelectric power generation materials: Technology and application opportunities. JOM Journal of the Minerals, Metals and Materials Society, 2009. 61(4): p. 79- 85.
Tchanche, B.F., et al., Low-grade heat conversion into power using organic Rankine cycles–A review of various applications. Renewable and Sustainable Energy Reviews, 2011. 15(8): p. 3963-3979.
Hamid Elsheikh, M., et al., A review on thermoelectric renewable energy: Principle parameters that affect their performance. Renewable and Sustainable Energy Reviews, 2014. 30: p. 337-355.
Ismail, B.I. and W.H. Ahmed, Thermoelectric Power Generation Using Waste- Heat Energy as an Alternative Green Technology. Recent Patents on Electrical Engineering, 2009. 2(1).
Jiin-Yuh Jang, Ying-Chi Tsai, "Optimization of thermoelectric generator module spacing and spreader thickness used in a waste heat recovery system," Elsevier, no. 51, pp. 677-689, 2012.
Laia Miró, Jaume Gasia, Luisa F. Cabeza, “Thermal energy storage (TES) for industrial waste heat (IWH) recovery:A review,” Elsevier, p. 285, 2016.
Tongcai Wang, Weiling Luan , Wei Wang, Shan-Tung Tu, "Waste heat recovery through plate heat exchanger based thermoelectric generator system," Elsevier, p. 860, 2014.
Cynthia Haddad, Christelle Périlhon, Amélie Danlos, Maurice-Xavier François, Georges Descombes, "Some efficient solutions to recover low and medium waste heat: competitiveness of the thermoacoustic technology," in The International Conference on Technologies and Materials for Renewable Energy, Environment and Sustainability, TMREES14, Paris, 2014.
S. Spoelstra, M.E.H. Tijani, Thermoacoustic heat pumps for energy savings," in Presented at the seminar "Boundary crossing acoustics" of the Acoustical Society of the Netherlands, Netherlands, 2005.
Fitriani, R.Ovik , B.D.Long , M.C.Barma, M.Riaz , M.F.M.Sabri , S.M.Said ,, "A review on nano structures of high – temperature thermoelectric materials for waste heat recovery," Elsevier, p. 636, 2016.
Law, R., A. Harvey, and D. Reay, Opportunities for low-grade heat recovery in the UK food processing industry. Applied thermal engineering, 2013. 53(2): p. 188-196.
Jorge Vázquez, Miguel A. Sanz-Bobi, Rafael Palacios, Antonio Arenas “State of the Art of Thermoelectric Generators Based on Heat Recovered from the Exhaust Gases of Automobiles” .
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 07, PP. 235-243, July 2019
Tariq Ahmad: Research Assisstants, USPCAS-E, UET Peshawar, Pakistan
Inzamam Ul Haq: Research Assisstants, USPCAS-E, UET Peshawar, Pakistan
Ahmad Amin: Research Assisstants, USPCAS-E, UET Peshawar, Pakistan
Abdul Basit: Assistant Professor, USPCAS-E UET Peshawar, Pakistan
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 07, PP. 228-234, July 2019
Electricity demand is continuously increasing due to dependency of industrial, commercial and residential users on advance technology. To address this issue is the prime need of time. Modern trend is to harvest energy from renewable sources such as wind, PV etc, which is environmental friendly and economical comparatively. However, as Renewable-Energy- Sources (RES) are sprinkled in small scale by the nature, so usually it is difficult to get a scalable amount of energy. Furthermore, the power quality is much affected due to varying nature of these RES sources. To get maximum efficiency and reliable operation from RES, different inverter topologies are presented. This paper highlights four types of Multilevel-invertertopologies commonly used for smoother, reliable and efficient operation of renewable energy sources (RES) in medium and high power applications. These are NeutrallPoint-Clamped-(NPC) or also called Diode-Clamped MultiiLevel-Inverter(DCMLI), Flying-Capacitor(FCMLI), Cascaded-Inverterr(CMLI) and a Hybrid/ Mixed MultiiLevel-Inverter topology(HMLI/MMLI). Each topology when used with renewable energy sources has its own features with corresponding advantages and disadvantages. This review is based on controlling methodologies, Total-Harmonic-Distortion (THD), construction complexity and components need for the respective topology. Multi-level-inverter (MLI) has the advantage of extinguishing the need of passive filtering at the grid side, and hence efficiency of the grid and cost minimization can be achieved.
[1] G. P. Adam et al. “New flying capacitor multilevel converter”. In: 2011 IEEE International Symposium on Industrial Electronics. 2011, pp. 335–339. DOI: 10 . 1109/ISIE.2011.5984181.
[2] S. S. Priyan and K. Ramani. “Implementation of closed loop system for flying capacitor multilevel inverter with stand-alone Photovoltaic input”. In: 2013 International Conference on Power, Energy and Control (ICPEC). 2013, pp. 281–286. DOI: 10 . 1109 / ICPEC . 2013 .6527666.
[3] L. Wang, Q. H. Wu, and W. Tang. “Novel Cascaded Switched-Diode Multilevel Inverter for Renewable Energy Integration”. In: IEEE Transactions on Energy Conversion 32.4 (2017), pp. 1574–1582. ISSN: 0885- 8969. DOI: 10.1109/TEC.2017.2710352.
[4] P. Sotoodeh and R. D. Miller. “Design and Implementation of an 11-Level Inverter With FACTS Capability for Distributed Energy Systems”. In: IEEE Journal of Emerging and Selected Topics in Power Electronics 2.1 (2014), pp. 87–96. ISSN: 2168-6777. DOI: 10 . 1109 / JESTPE.2013.2293311.
[5] S Senthil and K Ravi. “A new compilation of renewable energy sources using multilevel inverter with space vector modulation techniques”. In: Green Computing Communication and Electrical Engineering (ICGCCEE), 2014 International Conference on. IEEE. 2014, pp. 1–6.
[6] Amrita Tuteja, Amita Mahor, and Aarti Sirsat. “A review on mitigation of harmonics in cascaded H-bridge multilevel inverter using optimization techniques”. In: International Journal of Emerging Technology and Advanced Engineering 3.2 (2013), pp. 30–34.
[7] J Rodiguez. “Multilevel inverter: a survey of topologies, controls, and application”. In: IEEE Transaction on Industrial Electronics 49.4 (2002), pp. 724–738.
[8] Ashish Bendre and Giri Venkataramanan. “Neutral current ripple minimization in a three-level rectifier”. In: IEEE transactions on industry applications 42.2 (2006), pp. 582–590.
[9] Derakhshanfar Mohammadreza. “Analysis of different topologies of multilevel inverters”. In: (2010).
[10] Dogga Raveendhra, Pracheta Prakash, and Parvesh Saini. “Simulation based analysis of FPGA controlled Cascaded H-Bridge Multilevel inverter fed solar PV system”. In: Energy Efficient Technologies for Sustainability (ICEETS), 2013 International Conference on. IEEE. 2013, pp. 568–572.
[11] Yugo Kashihara and Jum-ichi Itoh. “Power losses of multilevel converters in terms of the number of the output voltage levels”. In: Power Electronics Conference (IPEC-Hiroshima 2014-ECCE-ASIA), 2014 International. IEEE. 2014, pp. 1943–1949.
[12] H Jabir et al. “Development of a transformer-based multilevel inverter topology for stand-alone photovoltaic system”. In: Power Electronics and Applications (EPE),topology for stand-alone photovoltaicvsystem”. In: Power Electronics and Applications (EPE), 2013 15th European Conference on. IEEE. 2013, pp. 1–10.
[13] S Boobalan and R Dhanasekaran. “Hybrid topology of asymmetric cascaded multilevel inverter with renewable energy sources”. In: Advanced Communication Control and Computing Technologies (ICACCCT), 2014 International Conference on. IEEE. 2014, pp. 1046 1051.
[14] Md Rabiul Islam et al. “A 43-level 33 kV 3-phase modular multilevel cascaded converter for direct grid integration of renewable generation systems”. In: Innovative Smart Grid Technologies-Asia (ISGT Asia), 2014 IEEE. IEEE. 2014, pp. 594–599.
[15] Edris Pouresmaeil, Daniel Montesinos-Miracle, and Oriol Gomis-Bellmunt. “Control scheme of three-level NPC inverter for integration of renewable energy resources into AC grid”. In: IEEE systems journal 6.2 (2012), pp. 242–253.
[16] Miguel Chaves et al. “New approach in back-to-back mlevel diode-clamped multilevel converter modelling and direct current bus voltages balancing”. In: IET Power Electronics 3.4 (2010), pp. 578–589.
[17] Xianglian Xu et al. “FPGA based multiplex PWM generator for diode-clamped cascaded inverter in the direct-driven wind power system”. In: Power Electronics and Motion Control Conference (IPEMC), 2012 7th International. Vol. 2. IEEE. 2012, pp. 1268–1272.
[18] Sanghun Choi and Maryam Saeedifard. “Capacitor voltage balancing of flying capacitor multilevel converters by space vector PWM”. In: IEEE Transactions on Power Delivery 27.3 (2012), pp. 1154–1161.
[19] Ahmad Alyan et al. “New topology three phase multilevel inverter for grid-connected photovoltaic system”. In: Industrial Electronics (ISIE), 2014 IEEE 23rd International Symposium on. IEEE. 2014, pp. 592–599.
[20] Xiaonan Lu et al. “High performance hybrid cascaded inverter for renewable energy system”. In: Applied Power Electronics Conference and Exposition (APEC), 2011 Twenty-Sixth Annual IEEE. IEEE. 2011, pp. 970– 975.
[21] Akira Nabae, Isao Takahashi, and Hirofumi Akagi. “A new neutral-point-clamped PWM inverter”. In: IEEE Transactions on industry applications 5 (1981), pp. 518–523.
[22] Hee-Jung Kim, Hyeoun-Dong Lee, and Seung-Ki Sul. “A new PWM strategy for common-mode voltage reduction in neutral-point-clamped inverter-fed AC motor drives”. In: IEEE Transactions on Industry Applications 37.6 (2001), pp. 1840–1845.
[23] Changliang Xia et al. “Discontinuous space vector PWM strategy of neutral-point-clamped three-level inverters for output current ripple reduction”. In: IEEE Transactions on Power Electronics 32.7 (2017), pp. 5109–5121.
[24] Yong Wang et al. “Diode-free T-type three-level neutralpoint- clamped inverter for low-voltage renewable energy system”. In: IEEE Transactions on Industrial Electronics 61.11 (2014), pp. 6168–6174.
[25] Muhammad H Rashid. Power electronics handbook. Butterworth-Heinemann, 2017.
[26] Engin Ozdemir, Sule Ozdemir, and Leon M Tolbert. “Fundamental-frequency-modulated six-level diodeclamped multilevel inverter for three-phase stand-alone photovoltaic system”. In: IEEE Transactions on Industrial Electronics 56.11 (2009), pp. 4407–4415.
[27] Leon M Tolbert, Fang Zheng Peng, and Thomas G Habetler. “Multilevel converters for large electric drives”. In: IEEE Transactions on Industry Applications 35.1 (1999), pp. 36–44.
[28] ID Pharne and YN Bhosale. “A review on multilevel inverter topology”. In: Power, Energy and Control (ICPEC), 2013 International Conference on. IEEE. 2013, pp. 700–703.
[29] Sergio Daher. Analysis, design and implementation of a high efficiency multilevel converter for renewable energy systems. Kassel University Press, 2006.
[30] Ibrahim Haruna Shanono. Multilevel converters: the future of renewable energy: design, simulation and implementation of a multilevel converter. LAP LAMBERT Academic Publishing, ein Imprint der/a trademark of AV Akademieverlag GmbH & Company KG, 2012.
[31] Mohamad Agha Shafiyi et al. “A grid-connected PV power supply based on flying capacitor multicell converter with modified MPPT based control for active power filtering”. In: Renewable Energy and Distributed Generation (ICREDG), 2012 Second Iranian Conference on. IEEE. 2012, pp. 141–146.
[32] Georgios Konstantinou et al. “The seven-level flying capacitor based ANPC converter for grid intergration of utility-scale PV systems”. In: Power Electronics for Distributed Generation Systems (PEDG), 2012 3rd IEEE International Symposium on. IEEE. 2012, pp. 592–597.
[33] Mostafa Khazraei et al. “Active capacitor voltage balancing in single-phase flying-capacitor multilevel power converters”. In: IEEE Transactions on Industrial Electronics 59.2 (2012), pp. 769–778.
[34] Ilhami Colak, Ersan Kabalci, and Ramazan Bayindir. “Review of multilevel voltage source inverter topologies and control schemes”. In: Energy conversion and management 52.2 (2011), pp. 1114–1128.
[35] Moncef Ben Smida and Faouzi Ben Ammar. “Modeling and DBC-PSC-PWM control of a three-phase flying capacitor stacked multilevel voltage source inverter”. In: IEEE Transactions on Industrial Electronics 57.7 (2010), pp. 2231–2239.
[36] Jih-Sheng Lai and Fang Zheng Peng. “Multilevel converters-a new breed of power converters”. In: IEEE Transactions on industry applications 32.3 (1996), pp. 509–517.
[37] Muhammad Sadikin, Tomonobu Senjyu, and Atsushi Yona. “High-frequency link DC for power quality improvement of stand-alone PV system in cascaded multilevel inverter”. In: Power Electronics and Drive Systems (PEDS), 2013 IEEE 10th International Conference on. IEEE. 2013, pp. 597–601.
[38] Surin Khomfoi and Leon M Tolbert. “Multilevel power converters”. In: Power Electronics Handbook (Third Edition). Elsevier, 2011, pp. 455–486.
[39] M Charai et al. “Performance Evaluation for Different Levels Multilevel Inverters Application for Renewable Energy Resources”. In: Journal of Engineering Technology (ISSN: 0747-9964) 6.1 (2017), pp. 90–96.
[40] WA Hill and CD Harbourt. “Performance of medium voltage multi-level inverters”. In: Industry Applications Conference, 1999. Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE. Vol. 2. IEEE. 1999, pp. 1186–1192.
[41] Y. Suresh and Anup Kumar Panda. “Investigation on hybrid cascaded multilevel inverter with reduced dc sources”. In: Renewable and Sustainable Energy Reviews 26 (2013), pp. 49 –59. ISSN: 1364-0321. DOI: https : / / doi . org / 10 . 1016 / j . rser . 2013 . 04 . 027. URL: http : / / www. sciencedirect . com / science / article / pii / S1364032113002797. [42] E. Najafi and A. H. M. Yatim. “Design and Implementation of a New Multilevel Inverter Topology”. In: IEEE Transactions on Industrial Electronics 59.11 (2012), pp. 4148–4154. ISSN: 0278-0046. DOI: 10.1109/TIE. 2011.2176691.
[42] E. Najafi and A. H. M. Yatim. “Design and Implementation of a New Multilevel Inverter Topology”. In: IEEE Transactions on Industrial Electronics 59.11 (2012), pp. 4148–4154. ISSN: 0278-0046. DOI: 10.1109/TIE. 2011.2176691.
[43] Sizhao Lu et al. “Modularized high frequency high power 3-level neutral point clamped PEBB cell for renewable energy system”. In: Energy Conversion Congress and Exposition (ECCE), 2014 IEEE. IEEE. 2014, pp. 2594–2599
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 07, PP. 224-227, July 2019
Concrete greater consumption in construction due to its high strength releases greenhouse gas emissions both directly and indirectly. In order to reduce the effects of global warming, this research work objective is to construct concrete that can absorb carbon dioxide without affecting strength and life span of concrete structures. Therefore to absorb CO2, Zeolite is added to cement which would help CO2 absorption from environment and hence decrease the overall CO2 content. Moreover concrete has heavy weight and has higher thermal conductivity. Efforts are made in order to make concrete lighter and energy efficient. Introducing foam material in form of polystyrene beads can decrease its density as well as make it energy efficient as its insulation properties will be enhanced. The blocks will be tested for Tension, Compression, and Thermal Insulation as well for CO2 absorption. Addition of zeolite for absorption of CO2 and EPS beads for Insulation properties is an innovative approach and helps in a cleaner and healthier environment.
[1] Madeleine Rubenstein, Emissions from the cement Industry, News from the Earth Institute, May 9, 2012.
[2] Ernst Worrell,Lynn Price, Nathan Martin, Chris Hendriks, and Leticia Ozawa Meida, Carbon Dioxide Emissions from the Global Cement Industry, Annual Review of Energy and the Environment, Vol. 26, pp 303-329, 2001.
[3] Balraj More, Pradeep Jadhav, Vicky Jadhav, Giridhar Narule, Shahid Mulani, CO2 Absorbing Concrete Block, International Journal of technology enhancements and emerging engineering research, Volume 2, pp 2347-4289.
[14] Mark G. Stewart, David V. Rosowsky, Time-dependent reliability of deteriorating reinforced concrete bridge decks, Structural Safety, Volume 20, pp 91-109, 1998.
[4] Ranjani V, Siriwardane, Ming-Shing Shen, and Edward P. Fisher, Adsorption of 2 on Zeolites at Moderate Temperatures U.S. Department of Energy, Energy & Fuels, 19 (3), pp 1153-1159, 2005.
[5] Semsettin Kılıncarslan “The effect of zeolite amount on the physical and mechanical properties of concrete” International Journal of the Physical Sciences Vol. 6(13), pp. 3041-3046, 4 July, 2017.
[6] G. M. Parton and M. E. Shendy-EI-Barbaryt, Polystyrene-bead concrete properties and mix design, The International Journal of Cement Composites and Lightweight Concrete, Volume 4, pp 153-161, 1982.
[7] Eva Vejmelkova, Dana Konˇakova, Tereza Kulovana, Martin Keppert, Jaromir Z umar, Pavla Rovnanikova, Zbyne k Keršner, Martin Sedlmajer, Robert C erny “Engineering properties of concrete containing natural zeolite as supplementary cementitious material: Strength, toughness, durability, and hygrothermal performance” Cement & Concrete Composites Vol. 55, (2015) pp 259–267M.
[8] Meysam Najimi Meysam Najimi, Jafar Sobhani, Babak Ahmadi, Mohammad Shekarchi “An experimental study on durability properties of concrete containing zeolite as a highly reactive natural pozzolan” Construction and Building Materials Vol. 35, (2012) pp 1023–1033Marcelo Bertalmio, Luminita Vese, Guillermo Sapiro, Stanley Osher, “Simultaneous Structure and Texture Image Inpainting”, IEEE Transactions On Image Processing, vol. 12, No. 8, 2003
[9] Fereshteh Alsadat Sabet, Nicolas Ali Libre, Mohammad Shekarchi “Mechanical and durability properties of self-consolidating high performance concrete incorporating natural zeolite, silica fume and fly ash” Construction and Building Materials Vol. 44 pp 175–184 (2013).
[10] J.M. Irwan, R.M. Asyraf, N. Othman, H.B. Koh, M.M.K. Annas and Faisal S.K,The Mechanical Properties of PET Fibre Reinforced Concrete from Recycled Bottle Wastes , Advanced Materials Research Vol. 795, pp 347-351, 2013.
[11] B.D. Ikotun, S. Ekolu “Strength and durability effect of modified zeolite additive on concrete properties” Construction and Building Materials Vol. 24, (2010) pp 749–757
[12] Md Azree Othuman Mydin “Effective thermal conductivity of foam concrete of different densities” School of Housing, Building and Planning, University Sains Malaysia, 11800, Penang, Malaysia.
[13] Bing Chena, Juanyu Liub “Properties of lightweight expanded polystyrene concrete reinforced with steel fiber” Cement and Concrete Research 34 (2004) 1259–1263.
[15] Aman Mulla, Amol Shelake “Lightweight Expanded Polystyrene Beads Concrete” International Journal of Research in Advent Technology (E-ISSN: 2321-9637) Special Issue National Conference “VishwaCon16”, 19 March 2016.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 07, PP. 221-223, July 2019
Plastic is used in abundance due to its various beneficial properties. All forms of consumed plastic become waste and require large areas of land for storage. The low biodegradability of plastic and its presence in large quantity negatively affects the environment. Researchers have developed numerous techniques to recycle plastic. However, each technique has its own demerits. Such as use of solid plastic waste as aggregates in concrete, affects the concrete mechanical properties. Therefore, the objective of this research work is to regain concrete strength by using steel fibers in combination with PET plastic aggregates and investigate its effect on mechanical and thermal insulation properties of concrete. Different specimen were tested for compressive and tensile strength to find out the effect of plastic aggregates incorporation as fine aggregates replacement on strength of concrete. There was noticeable decrease in the compressive and split tensile strength of concrete at 20% replacement of sand by PET plastic aggregates. Steel fibers were also added to the concrete mixes which increase the strength of concrete mixes. After getting satisfactory results of mechanical properties, finally specimen were tested for thermal insulation properties. Results showed that thermal conductivity of samples decrease considerably with addition of plastic aggregates and it leads to good insulation properties of concrete.
[1] Cordoba, L.A., Berrera, G.M., Diaz, C.B., Nunez, F.U., Yanez, A.L., 2013. Effects on mechanical properties of recycled PET in cement-based composites. Int. J. Polym. Sci. 2013, 1e6
[2] Araghi, H.J., Nikbin, I.M., Reskati, S.R., Rahmani, E., Allahyari, H., 2015. An experimental investigation on the erosion resistance of concrete containing various PET particles percentages against sulfuric acid attack. Constr. Build. Mater. 77, 461e471.
[3] Naik, T.R., Singh, S.S., Huber, C.O., Brodersen, B.S., 1996. Use of post-consumer waste plastic in cement-based composites. Cem. Concr. Res. 26, 1489e1492.
[4] Kou, S.C., Lee, G., Poon, C.S., Lai, W.L., 2009. Properties of lightweight aggregate concrete prepared with PVC granules derived from scraped PVC pipes. Waste Manag. 29, 621e628.
[5] Bhogayata, A., Shah, K.D., Arora, N.K., 2013. Strength properties of concrete containing post-consumer metalized plastic wastes. Int. J. Eng. Res. Technol. ISSN: 2278-0181 2 (3).
[6] Asokan P, Osmani M, Price ADF. Improvement of the mechanical properties of glass fibre reinforced plastic waste powder filled concrete. Constr Build Mater 2010;24:448–60
[7] Kan A, Demirbog˘a R. A novel material for lightweight concrete production. Cem Concr Compos 2009;31:489–95.
[8] Hannawi K, Kamali-Bernard S, Prince W. Physical and mechanical properties of mortars containing PET and PC waste aggregates. Waste Manage 2010;30:2312–20
[9] Bayasi Z, Zeng J. Properties of polypropylene fiber reinforced concrete. ACI Mater J 1993;90:605–10
[10] Fraj AB, Kismi M, Mounanga P. Valorization of coarse rigid polyurethane foam waste in lightweight aggregate concrete. Constr Build Mater 2010;24:1069–77
[11] Mounanga P, Gbongbon W, Poullain P, Turcry P. Proportioning and characterization of lightweight concrete mixtures made with rigid polyurethane foam wastes. Cem Concr Compos 2008;30:806-14
[12] Van Krevelen, D.W., 1990. Properties of Polymers, Elsevier, Amsterdam, The Netherlands, 1990.
[13] Al-Manaseer, A.A., Dalal, T.R., 1997. Concrete containing plastic aggregates. Concrete International 19 (8), 47–52.
[14] Klein, R. Laser Welding of Plastics, 1st ed.;Wiley-VCH: Hoboken, NJ, USA, 2011
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 07, PP. 217-220, July 2019
The dye sensitized solar cells technology is one of the highly efficient, low cost and easily fabricated renewable energy technology. The highly soluble PVAc was prepared by solution polymerization. The PVAc was employed as an electrolyte in third generation, Dye sensitized solar cell (DSSC). The PVAc was characterized using SEM, XRD and conductivity measuring techniques. The prepared electrolyte behaved as gel electrolyte. SEM images shows the excellent dispersion PVAc in liquid electrolyte. The conversion efficiency achieved using gel electrolyte was 4.18%, which was comparable to liquid electrolyte with a value of 4.57%.This new technique reduces the degradation of DSCs rising from volatilization and leakage of the liquid electrolyte and endorses the commercialization process of DSSC.
Suait, M. S., Rahman, M. Y. A., & Ahmad, A. (2015). Review on polymer electrolyte in dye-sensitized solar cells (DSSCs). Solar Energy, 115, 452-470.
Mussard, M. (2017). Solar energy under cold climatic conditions: A review. Renewable and Sustainable Energy Reviews, 74, 733-745.
Kibria, M. T., Ahammed, A., Sony, S. M., Hossain, F., & Islam, S. U. (2014). A Review: Comparative studies on different generation solar cells technology. In Proc. of 5th International Conference on Environmental Aspects of Banglades
Bagher, A. M., Vahid, M. M. A., & Mohsen, M. (2015). Types of solar cells and application. American Journal of Optics and Photonics, 3(5), 94-113.
Kumar, S., Nehra, M., Deep, A., Kedia, D., Dilbaghi, N., & Kim, K. H. (2017). Quantum-sized nanomaterials for solar cell applications. Renewable and Sustainable Energy Reviews, 73, 821-839.
Gong, J., Sumathy, K., Qiao, Q., & Zhou, Z. (2017). Review on dye-sensitized solar cells (DSSCs): Advanced techniques and research trends. Renewable and Sustainable Energy Reviews, 68, 234-246.
Yun, S., Freitas, J. N., Nogueira, A. F., Wang, Y., Ahmad, S., & Wang, Z. S. (2016). Dye-sensitized solar cells employing polymers. Progress in Polymer Science, 59, 1-40.
Bagher, A. M., Vahid, M. M. A., & Mohsen, M. (2015). Types of solar cells and application. American Journal of Optics and Photonics, 3(5), 94-113.
Al-Alwani, M. A., Mohamad, A. B., Ludin, N. A., Kadhum, A. A. H., & Sopian, K. (2016). Dye-sensitised solar cells: Development, structure, operation principles, electron kinetics, characterisation, synthesis materials and natural photosensitisers. Renewable and Sustainable Energy Reviews, 65, 183-213.
Lee, C. P., Li, C. T., & Ho, K. C. (2017). Use of organic materials in dye-sensitized solar cells. Materials Today.
Ye, M., Wen, X., Wang, M., Iocozzia, J., Zhang, N., Lin, C., & Lin, Z. (2015). Recent advances in dye-sensitized solar cells: from photoanodes, sensitizers and electrolytes to counter electrodes. Materials Today, 18(3), 155-162.
Kumara, N. T. R. N., Lim, A., Lim, C. M., Petra, M. I., & Ekanayake, P. (2017). Recent progress and utilization of natural pigments in dye sensitized solar cells: A review. Renewable and Sustainable Energy Reviews, 78, 301-317.
Mehmood, U., Al-Ahmed, A., Al-Sulaiman, F. A., Malik, M. I., Shehzad, F., & Khan, A. U. H. (2017). Effect of temperature on the photovoltaic performance and stability of solid-state dye-sensitized solar cells: A review. Renewable and Sustainable Energy Reviews, 79, 946-959.
Lee, C. P., Li, C. T., & Ho, K. C. (2017). Use of organic materials in dye-sensitized solar cells. Materials Today, 20(5), 267-283.
Yusof, S. M. M., & Yahya, W. Z. N. (2016). Binary ionic liquid electrolyte for dye-sensitized solar cells. Procedia engineering, 148, 100-105.
Mohamad, A. A. (2016). Absorbency and conductivity of quasi-solid-state polymer electrolytes for dye-sensitized solar cells: A characterization review. Journal of Power Sources, 329, 57-71.
Mittal, G., Dhand, V., Rhee, K. Y., Park, S. J., & Lee, W. R. (2015). A review on carbon nanotubes and graphene as fillers in reinforced polymer nanocomposites. Journal of Industrial and Engineering Chemistry, 21, 11-25.
https://en.wikipedia.org/wiki/Polyvinyl_acetate#cite_note-1. 23 sept. 2018.
Fares, S. (2011). Frequency dependence of the electrical conductivity and dielectric constants of polycarbonate (Makrofol-E) film under the effects of [gamma]-radiation. Natural Science, 3(12), 1034.
Yeum, J. H., Park, J. H., Choi, J. Y., Kim, J. W., Han, S. K., & Oh, W. Polymer/Montmorillonite/Silver Nanocomposite Micro-and Nanoparticles Prepared by In-Situ Polymerization and Electrospraying Technique.
Safenaz, M. R., & Sheikha, M. (2012). Synthesis and electrical properties of polyaniline composite with silver nanoparticles. Advances in Materials Physics and Chemistry, 2012.
Fares, S. (2011). Frequency dependence of the electrical conductivity and dielectric constants of polycarbonate (Makrofol-E) film under the effects of [gamma]-radiation. Natural Science, 3(12), 1034.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 06, PP. 212-216, June 2019
Electricity is a basic need of humans in this modern era and plays a role of a backbone in our daily life as well as in the economic growth of a country. The efficiency of a power system is very important parameter which helps in analyzing its overall performance. So due to this reason effective and efficient utilization of solar energy is very important. Heat losses occurs in solar panels which reduces power output and hence overall efficiency is decreased. These heat losses can be utilized in such a way that works as waste heat recovery system. This system uses light and heat energy of the sun. When sunlight strikes the PN Junctions of solar PV panels, photovoltaic electricity is produced. Whereas, heat of sun and heat losses in the solar panels can be utilized and temperature difference is created by different means so as to generate electricity using thermoelectric cells (TEC) which works on the principle of Seebeck effect. Electricity generated from both sources can be common pooled and feed to the load either directly or it can be stored in batteries. This makes the system more effective and efficient.
[1] Trading Economics, "Pakistan Electricity Production," Trading Economics, 2018. [Online]. Available: https://tradingeconomics.com/pakistan/electricity-production.
[2] Ministry of Finance, "Pakistan Economic Survey 2017-2018," Ministry of Finance, Islamabad, 2017-2018.
[3] N. M. Kumar, M. S. P. Subathra and J. E. Moses, "On-Grid Solar Photovoltaic System: Components,Design Considerations, and Case Study," in 4th International Conference on Electrical Energy Systems (ICEES), 2018.
[4] M. P. Monfort, S. L. Oña, D. Ribó-Pérez and S. Z. Djokic, "Modelling and Evaluating Performance of Large Off-Grid PV Systems for Water Pumping," in 2018 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGTEurope), Sarajevo, Bosnia-Herzegovina, 2018.
[5] K. Alluhaybi, X. Chen and I. Batarseh, "A Grid Connected Photovoltaic
Microinverter with Integrated Battery," in IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, Washington, DC, USA, 2018.
[6] D. A. Tillman, Coal-Fired Electricity and Emissions Control: Efficiency and Effectiveness, Butterworth-Heinemann, Elsevier, 2018.
[7] U. Pelay, L. Luo, Y. Fan, D. Stitou and MarkRood, "Thermal energy storage systems for concentrated solar power plants," Renewable and Sustainable Energy Reviews, vol. 79, pp. 82-100, 2017.
[8] S. Huang and X. Xu, "A regenerative concept for thermoelectric power generation," Applied Energy, vol. 185, pp. 119-125, 1 1 2017.
[9] M. Md. Kafiul Islam, "Performance assessment and degradation analysis of solar photovoltaic technologies: A review," Renewable and Sustainable Energy Reviews, vol. 78, pp. 554-587, 2017.
[10] M. Ibañez-Puy, J. Bermejo-Busto, C. Martín-Gómez, M. Vidaurre-Arbizu and J. Sacristán-Fernández, "Thermoelectric cooling heating unit performance under real conditions", Applied Energy, vol. 200, pp. 303-314, 2017. Available: 10.1016/j.apenergy.2017.05.020
[11] D. Zhao and G. Tan, "A review of thermoelectric cooling: Materials, modeling and applications", Applied Thermal Engineering, vol. 66, no. 1-2, pp. 15-24, 2014. Available: 10.1016/j.applthermaleng.2014.01.074.
[12] H. Zhang, W. Kong, F. Dong, H. Xu, B. Chen and M. Ni, "Application of cascading thermoelectric generator and cooler for waste heat recovery from solid oxide fuel cells", Energy Conversion and Management, vol. 148, pp. 1382-1390, 2017. Available: 10.1016/j.enconman.2017.06.089.
[13] "Thermoelectrics", Thermoelectrics.matsci.northwestern.edu,2019. [Online].Available: http://thermoelectrics.matsci.northwestern.edu/thermoelectrics/index.html. [Accessed: 20- Jun- 2019].
[14] D. Li, Y. Xuan, Q. Li and H. Hong, "Exergy and energy analysis of photovoltaic-thermoelectric hybrid systems", Energy, vol. 126, pp. 343-351, 2017. Available: 10.1016/j.energy.2017.03.042.
[15] H. Zhang, H. Xu, B. Chen, F. Dong and M. Ni, "Two-stage thermoelectric generators for waste heat recovery from solid oxide fuel cells", Energy, vol. 132, pp. 280-288, 2017. Available: 10.1016/j.energy.2017.05.005.
[16] K. Cheng, J. Qin, Y. Jiang, S. Zhang and W. Bao, "Performance comparison of single- and multi-stage onboard thermoelectric generators and stage number optimization at a large temperature difference", Applied Thermal Engineering, vol. 141, pp. 456-466, 2018. Available: 10.1016/j.applthermaleng.2018.05.127.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 06, PP. 208-211, June 2019
Pyrolysis is one of the widely used technique among the thermal conversion processes of biomass. Biomass in the form of agricultural residues is prevalent in new renewable energy sources, especially in view of its broad potential and rich use. In this paper, the pyrolysis of chickpeas and peanut shells in laboratory-scale tubular furnace reactors is studied, which is considered to be an effective method to utilize agricultural residues in China. The effects of raw material ratio and reaction temperature on the distribution of pyrolysis products are described quantitatively, as well as some characteristics of these products produced in the tubular furnace reactor system developed in this study. The main constituents of bio-oil are categorized into three kinds including aromatic compound, carbonyl compounds and carboxyl compounds that were analyzed with 1H NMR (nuclear magnetic resonance characterization). The maximum yield of bio-oil, about 44.80% from the peanut shell biomass, and 10.3% from the waste of chickpeas by weight was extracted, at a flow rate 10 L/min of N2 at a reaction temperature of 500°C was achieved.
[1] Bridgwater, A. and G. Peacocke, Fast pyrolysis processes for biomass. Renewable and sustainable energy reviews, 2000. 4(1): p. 1-73.
[2] Vamvuka, D., Bio‐oil, solid and gaseous biofuels from biomass pyrolysis processes—an overview. International journal of energy research, 2011. 35(10): p. 835-862.
[3] Vamvuka, D. and E. Kakaras, Ash properties and environmental impact of various biomass and coal fuels and their blends. Fuel Processing Technology, 2011. 92(3): p. 570-581.
[4] Robinson, J., et al., Microwave pyrolysis of biomass: control of process parameters for high pyrolysis oil yields and enhanced oil quality. Energy & Fuels, 2015. 29(3): p. 1701-1709.
[5] Beneroso, D., et al., Microwave pyrolysis of biomass for bio-oil production: Scalable processing concepts. Chemical Engineering Journal, 2017. 316: p. 481-498.
[6] Wu, C., et al., Conventional and microwave-assisted pyrolysis of biomass under different heating rates. Journal of Analytical and Applied Pyrolysis, 2014. 107: p. 276-283.
[7] Bridgwater, A.V., Review of fast pyrolysis of biomass and product upgrading. Biomass and bioenergy, 2012. 38: p. 68-94.
[8] Bridgwater, A.V., Upgrading biomass fast pyrolysis liquids. Environmental Progress & Sustainable Energy, 2012. 31(2): p. 261-268.
[9] Abas, F.Z., F.N. Ani, and Z.A. Zakaria, Microwave-assisted production of optimized pyrolysis liquid oil from oil palm fiber. Journal of Cleaner Production, 2018. 182: p. 404-413.
[10] Wang, Y., et al., Production of bio-oil from agricultural waste by using a continuous fast microwave pyrolysis system. Bioresource technology, 2018. 269: p. 162-168.
[11] Aziz, S.M.A., et al., Bio-oils from microwave pyrolysis of agricultural wastes. Fuel Processing Technology, 2013. 106: p. 744-750.
[12] Sutcu, H., I. Toroglu, and S. Piskin, Structural characterization of oil component of high temperature pyrolysis tars. Energy sources, 2005. 27(6): p. 521-534.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 06, PP. 202-207, June 2019
The discussion in this paper is about the possible use of microwave pyrolysis technique as an energy-capable alternative to present heating techniques in biomass waste processing and treatment for renewable energy system. The wreck tires have relevant disposal or recycling issues under environment and financial and sustainable modes. These techniques can be a challenging for manufacturing and intellectual learning researches. In this competition, pyrolysis is a latest, strong substitute to the reprocessing of useless tires, until unless it will be possible to produce value adding results. In any case, upgrades in warmth exchange innovation are fundamental to enhance the plenitude of the procedure. Here we are describing the usage of microwave radiation (MW) as one of the most beneficial heating skills for pyrolysis. Whereas, there are different techniques for the process of the waste tires in previous era, such as crushing to get crumbs and rubber powder, burning them in cement furnaces for thermal power generation, re-stepping, decomposition by chemicals Heat degradation of rubber materials. The important and valuable chemicals in commercial use are derived from oils which are obtained from pyrolysis process by subjecting the pyrolytic oils to a fraction distillation at a temperature of about 207 ° C (under atmospheric) pressure for the product of at least one commercially valuable Chemical to isolate at least one commercially valuable chemical. Some of the selected chemicals from the group, consisting of paraffin, naphenes, olefins and flavorings. Particularly valuable chemicals that can be extracted from ripe pyrolytic oils are benzene, toluene, xylene, styrene and lime dl. The distillation fraction, which boils above 204 ° C, can be used as an extension oil in the production of various rubber and plastic parts. An improved process for producing the carbon black by microwave pyrolysis (MWP) of used rubber tires is also revealed. The recovered products which have high commercial value indicates advantage over traditional, more destructive disposal methods, and it also advice the very great capability for measuring the process and feedback to the commercial as well as industrial level.
[1] Wang, H., et al., Characterization of Bitumen Modified with Pyrolytic Carbon Black from Scrap Tires. Sustainability, 2019. 11(6): p. 1631.
[2] Alvarez, J., et al., Improving bio-oil properties through the fast co-pyrolysis of lignocellulosic biomass and waste tyres. Waste Management, 2019. 85: p. 385-395.
[3] Zhang, X. and R.C. Brown, Introduction to Thermochemical Processing of Biomass into Fuels, Chemicals, and Power. Thermochemical Processing of Biomass: Conversion into Fuels, Chemicals and Power, 2019: p. 1-16.
[4] Kalogiannis, K.G., S.D. Stefanidis, and A.A. Lappas, Catalyst deactivation, ash accumulation and bio-oil deoxygenation during ex situ catalytic fast pyrolysis of biomass in a cascade thermal-catalytic reactor system. Fuel Processing Technology, 2019. 186: p. 99-109.
[5] Haeldermans, T., et al., Microwave assisted and conventional pyrolysis of MDF–characterization of the produced biochars. Journal of Analytical and Applied Pyrolysis, 2019. 138: p. 218-230.
[6] Martínez, J.D., et al., Waste tyre pyrolysis–A review. Renewable and Sustainable Energy Reviews, 2013. 23: p. 179-213.
[7] van Geldern, R., et al., Stable carbon isotope analysis of dissolved inorganic carbon (DIC) and dissolved organic carbon (DOC) in natural waters–Results from a worldwide proficiency test. Rapid Communications in Mass Spectrometry, 2013. 27(18): p. 2099-2107.
[8] Venderbosch, R.H., Fast pyrolysis. Thermochemical processing of biomass: conversion into fuels, chemicals and power, 2019: p. 175-206.
[9] Lin, C.J. and W.L. Hergenrother, Tire compositions comprising epoxidized natural rubber and a functionalized polyolefin. 2005, Google Patents.
[10] Kumarn, S., et al., Investigating the Mechanistic and Structural Role of Lipid Hydrolysis in the Stabilization of Ammonia-Preserved Hevea Rubber Latex. Langmuir, 2018. 34(43): p. 12730-12738.
[11] Schürmann, O., Pneumatic Vehicle Tyres. 2018, Google Patents.
[12] Gauthier-Maradei, P., C.P.T. Ruiz, and M. Capron, Oil and Aromatic Yield Maximization During Pyrolysis of Scrap Tire Rubber. Waste and Biomass Valorization, 2019: p. 1-11.
[13] De Sciarra, F.M. and P. Russo, Experimental Characterization, Predictive Mechanical and Thermal Modeling of Nanostructures and Their Polymer Composites. 2018: William Andrew.
[14] Dimpe, K.M., A. Mpupa, and P.N. Nomngongo, Microwave assisted solid phase extraction for separation preconcentration sulfamethoxazole in wastewater using tyre based activated carbon as solid phase material prior to spectrophotometric determination. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2018. 188: p. 341-348.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 06, PP. 196-201, June 2019
Solar photovoltaics pose as a major technology in shifting reliance from non-renewable to renewable energy resources. Soiling is a key issue which is further escalated by dust blowing as a result of road infrastructure development in urban environments. The Peshawar Bus Rapid Transit Corridor (BRT) project provided a chance to carry out this study aimed at corelating scale of infrastructure development with heightened PV losses and formulating ways to cope with the problem. A site offering an urban topography located at a distance of 1.2 km away from the BRT route was identified. The soiling station at this site was operated for one month and the data was processed to identify the prevailing soiling loss trends. The soiling station recorded losses in excess of 20% within the first 2 weeks of operation. It was found that clouds and strong winds had no significant role in retarding the losses. However, frequent rainwater cleaning at one instant reversed the losses back to 0%. It was thus established that cleaning the modules with water on a two week basis during large scale road development works in and around urban areas could keep the losses within a bearable limit.
Tanveer A, Manan N., “Impact of Infrastructure on Economic Growth of Pakistan.” Journal of Economic Research,Edition 1, 2016.
B. Srinivasu, P. Srinivasa Rao, “Infrastructure Development and Economic growth: Prospects and Perspective”. Journal of Business Management & Social Sciences Research, Vol. 2, No. 1, 2013.
P. Vries, Encyclopaedia of the Modern World, Vol. 4. Oxford University Press, 2008, pp. 158-161.
State Bank of Pakistan, "The Pakistan Infrastructure Report", State Bank of Pakistan Infrastructure Task Force, 2018.
The News International, "Pakistan ranked 9th in infrastructure development index", 2017.
Chaudhry, M.A., Raza, R. and Hayat, S.A., 2009. Renewable energy technologies in Pakistan: prospects and challenges. Renewable and Sustainable Energy Reviews, 13(6-7), pp.1657-1662.
International Energy Agency (IEA), Global Energy & CO2 Status Report (2017).
J. Goldemberg et al., “World energy assessment: Energy and the Challenge of Sustainability”. New York, NY: United Nations Development Programme, 2000, p. 239.
Module 7, Renewable energy technologies, Sustainable energy regulation and policymaking for Africa - TRAINING MANUAL, 2018.
S. Canada, “Quality Assurance: Impacts of Soiling on Utility Scale PV System Performance”. SolarPro Magazine no. 6.3, pp. 14-20, 2013.
K. Menoufi, “Dust accumulation on the surface of Photovoltaic Panels: Introducing the Photovoltaic Soiling Index (PVSI)”, MDPI Sustainability Journal, 2017.
T. Sarver, A. Al-Qaraghuli and L. Kazmerski, "A comprehensive review of the impact of dust on the use of solar energy: History, investigations, results, literature, and mitigation approaches", Renewable and Sustainable Energy Reviews, vol. 22, pp. 698-733, 2013.
European Photovoltaic Industry Association, "Unlocking the Sunbelt Potential of Photovoltaics", 2010.
T. Weber, N. Ferreti, F. Schenider, A. Janker, M. Trawney and J. Berghold, "Impact and Consequences of soiling and cleaning of PV modules", NREL Photovoltaic Reliability Workshop (PVMRW), Denver, 2015.
Peshawar Development Authority, "LARP Implementation Monthly Progress Report May 2018", Government of Khyber Pakhtunkhwa, 2018
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 06, PP. 192-195, June 2019
Modular multilevel converters are the prominent candidates for high voltage direct current transmission systems. They offer high flexibility, modularity and flexibility in their operation. The main problem of multilevel converters are the circulating current in the converter and arm’s voltage balancing in steady state and dynamic state. An easy and flexible control scheme is introduced in this study which eliminates the even order harmonics in the circulating current and reduces the circulating current. The model is implemented in Simulink/Matlab and the results confirm the efficiency of the proposed model. , the response of the controller is also presented in result section, which manifest its ability to control the current and eliminate the even order harmonics.
[1] L. A. a. H. P. N. A. Antonopoulos, "On dynamics andvoltage control of the modular MLCR," in 13th Eur. Conf. Power Electron. Appl., , Sep. 8–10, 2009,..
[2] J. P. S. C. R. P. J. Z. a. V. G. A. G. Konstantinou, "Control of CCRs in Modular MLCRs Through Redundant Voltage Levels," IEEE Transactions on Power Electronics, vol. 31, no. 11, pp. 7761-7769, Nov. 2016..
[3] Y. W. a. R. Marquardt, "Novel Control Scheme for the Internal Energies and internal circulating current of Modular multilevel converters," in International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable, PCIM Europe, 2017.
[4] H. L. Z. W. a. T. W. Y. Ma, "Capacitor voltage balancing control of modular MLCRs with energy storage system by using carrier phase-shifted modulation,," in IEEE Applied Power Electronics Conference and Exposition (APEC), , Tampa, FL,, 2017.
[5] T. J. S. a. R. E. B. J. D. Stringfellow, "A new arm voltage balancing technique for the control of modular multilevel converter," in 41st Annual Conference of the IEEE Industrial Electronics Society, Yokohama, 2015.
[6] J. P. S. C. J. Z. G. K. a. V. G. A. R. Picas, "Optimal injection of harmonics in CCRs of modular MLCRs for capacitor voltage ripple minimization," in IEEE ECCE Asia Downunder, Melbourne, VIC, 2013.
[7] P. W. Z. C. H. Z. Y. L. a. Y. L. Z. Li, "An Inner Current Suppressing Method for Modular MLCRs," IEEE Transactions on Power Electronics, vol. 28, no. 11, pp. 4873-4879, 2003.
[8] T. G. a. U. K. M. B. S. Riar, "Model Predictive Direct Current Control of Modular MLCRs: Modeling, Analysis, and Experimental Evaluation," IEEE Transactions on Power Electronics, vol. 30, no. 1, pp. 431-439, 2015.
[9] A. L. a. R. Marquardt, ""An innovative modular MLCR topology suitable for a wide power range," in IEEE Bologna Power Tech Conference Proceedings, 2003.
[10] Y. C. C. T. J. Y. a. X. Y. B. Chen, "Analysis and Suppression of Circulating Harmonic Currents in a Modular MLCR Considering the Impact of Dead Time," IEEE Transactions on Power Electronics, vol. 30, no. 7, pp. 3542-3552, 2015.
[11] A. A. D. S. K. I. M. V. a. H. P. N. L. Angquist, "Open-Loop Control of Modular MLCRs Using Estimation of Stored Energy," IEEE Transactions on Industry Applications, vol. 47, no. 6, pp. 2516-2524, 2011.
[12] B. S. R. a. U. K. Madawala, "Decoupled Control of Modular MLCRs Using Voltage Correcting Modules,," IEEE Transactions on Power Electronics,, vol. 30, no. 2, pp. 690-698, 2015.
[13] M. A. P. D. A. J. R. E. a. J. R. R. Lizana, "Decoupled Current Model and Control of Modular MLCRs," IEEE Transactions on Industrial Electronics, vol. 62, no. 9, pp. 5382-5392, 2015.
[14] S. L. a. M. D. P. Münch, "Modeling and current control of modular MLCRs considering actuator and sensor delays," in 35th Annual Conference of IEEE Industrial Electronics , Porto, 2009.
[15] Z. K. e. al, "Optimal submodule capacitor sizing for modular MLCRs with common mode voltage injection and CCR control," in IEEE Energy Conversion Congress and Exposition (ECCE), Cincinnati,, 2017.
[16] Y. e. a. Zhou, "Analysis and control of modular MLCRs under unbalanced conditions," IEEE Transactions on Power Delivery , pp. 1986-1995, 2013.
[17] A. L. a. R. Marquardt, "An innovative modular MLCR topology suitable for a wide power rang," in IEEE Bologna Power Tech Conference Proceedings, 2003.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 05, PP. 187-191, May 2019
Pakistan is facing a decade long worst crises of energy. The demand supply gaps, heavy dependence on imported fossil fuel and inefficient consumption patterns are major thematic reasons of crises. Energy conservation is a low hanging fruits which can be materialized to answer the crises. This is a joint academia and industry projects, where detailed energy audit of educational facility of University of Engineering and Technology Jalozai Campus was carried. The significant energy consumer areas of educational building like lighting, Heating and cooling system and generation plants were deeply investigated. In additions, the male and female boarding houses were audited. Based on Illumination Engineering Standards and ASHRAE level III benchmarking, various energy conservations measures were recommended including efficient lighting system, installation of occupancy sensors, office appliances scheduling and transition towards energy efficient fans. The suggested recommendations implementations are capable to save a 22.3% of electricity in the facility. The economic analysis shows a payback period six to eighteen months for various conservation measures. In addition, a behavioral training and mobilization drive is highly recommended to build the conservation culture on gross root level as integrated part of societal practices and cultural values.
[1] U.S Energy Information Administration. International Energy Outlook 2009: World Energy and economic Outlook; 2009,
[2] United Nations Industrial Development Organization (UNIDO). Policies for promoting industrial energy efficiency in developing countries and transitioneconomies; 2008
[3] Hydro Carbon Development Institute (HDIP), Pakistan Energy Year Book, 2017
[4] SAARC Road Map For Energy Conservation And Energy Efficiency In Pakistan
[5] Abdul Raheem et. Al, Renewable energy deployment to combat energy crisis in Pakistan , Energy, Sustainability and Society ,2016
[6] ENERCON, Pakistan Energy Conservation Potentials, 2014
[7] Energy conservation and emission reduction through electric motors in industrial sector of pakistan. Sindh University Research Journal - SURJ (Science Series), [S.l.], v. 46, n. 1, mar. 2014. ISSN 1813-1743. Available at: . Date accessed: 15 April 2019.
[8] USAID Energy Efficeny Initivitaie Prompting energy efficiency in the reforming electricity market, 2013
[9] Kim, H.Y.; Kang, H.J. A Study on Development of a Cost Optimal and Energy Saving Building Model: Focused on Industrial Building. Energies 2016, 9, 181.
[10] Hu, M. Cost-Effective Options for the Renovation of an Existing Education Building toward the Nearly Net-Zero Energy Goal—Life-Cycle Cost Analysis. Sustainability 2019, 11, 2444.
[11] Hinge, A.; Bertoldi, P.; Waide, P. Comparing commercial building energy use around the world. In Proceedings of the 2004 ACEEE Summer Study on Energy Efficiency in Buildings, Pacific Grove, CA, USA, 22–27 August 2004.
[12] Aljami, A. Energy audit of an educational building in a hot summer climate. Energy Build. 2012, 47, 122–130.
[13] Desideri, U.; Leonardi, D.; Arcioni, L.; Sdringola, P. European project Educa-RUE: An example of energy efficiency paths in educational buildings. Appl. Energy 2012, 97, 384–395.
[14] Bourdeau, M.; Guo, X.; Nefzaoui, E. Buildings energy
[15] consumption generation gap: A post-occupancy assessment in a case study of three higher education buildings. Energy Build. 2018, 159, 600–611.
[16] Lin, B.; Zhang, Z.; Ge, F. Energy Conservation in China’s Cement Industry. Sustainability 2017, 9, 668.
[17] Zhu, P., Gilbride, M., Yan, D. et al. Build. Simul. (2017) 10: 799 https://doi.org/10.1007/s12273-017-0408-6
[18] Thollander, P.; Danestig, M.; Rohdin, P. Energy policies for increased industrial energy efficiency: Evaluation of a local energy programme for manufacturing SMEs. Energy Policy 2007, 35, 5774–5783.
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 05, PP. 182-186, May 2019
Electrocardiograph signal is effective tool in diagnosis of cardiac related diseases and plays an important role in biomedical research. To diagnose the cardiac disease, the signal must be recorded properly. The addition of artifacts like Persistent noises, Burst noises and their types play an important in making it difficult to interpret and analyses the electrocardiograph signal. A Blind source separation (BSS) related technique named Independent Component Analysis (ICA) is the right solution for it. In this paper, different ICA Algorithms like JADE, FAST are used to de-noise the ECG signal from the artifacts and a comparison between both is shown which is done on the basis Performance Index (PI) using a dsp ICALAB toolbox in MATLAB.
[1] Keshavamurthy T G, Dr. M.N.Eshwarappa, “Review Paper on Denoising of ECG Signal”, Second International Conference on Electrical, Computer and Communication Technologies (ICECCT), 2017.
[2] Prof. Alka S. Barhatte, Dr. Rajesh Ghongade, Sachin V. Tekale, “Noise Analysis of ECG Signal Using Fast ICA”, Conference on Advances in Signal Processing (CASP), 2016
[3] Shudong Tian, Jun Han, Jianwei Yang, Lijun Zhou, Xiaoyang Zeng, “Motion Artifact Removal Based on ICA for Ambulatory ECG Monitoring”, IEEE 11th International Conference on ASIC (ASICON), 2015
[4] Mayank Kanaujia, Dr. Geetika Srivastava, “ECG Signal Decomposition Using PCA and ICA”, National Conference on Recent Advances in Electronics & Computer Engineering RAECE, 2015
[5] Bhargav Bhatt, M.Ramasubba Reddy, “ICA Based Flow Artifact Removal from ECG During MRI”, International Conference on Advances in Computing, Control, and Telecommunication Technologies, 2009
[6] H.P. Kasturiwale, C.N. Deshmukh, “Quality Assessment of ICA Algorithms for ECG Signal Analysis”, Second International Conference on Emerging Trends in Engineering and Technology ICETET, 2009
[7] Uzzal Biswas, Anup Das, Saurov Debnath, Isabela Oishee, ”ECG Signal Denoising by Using Least-Mean-Square and Normalised-Least-Mean-Square Algorithm Based Adaptive Filter”, 3rd International Conference On Informatics, Electronics & Vision, 2014
[8] Deepak Vala, Tanmay Pawar, V. K. Thakar, “Motion Artifact removal in Ambulatory ECG Signal using ICA”, International Journal on Recent and Innovation Trends in Computing and Communication Volume: 2, 2014
[9] Mrinal Phegade, P. Mukherji, “ICA Based ECG Signal Denoising”, International Conference on Advances in Computing, Communications and Informatics (ICACCI), 2013
[10] Baby Paul, P. Mythili, “ECG Noise Removal using GA Tuned SignData Least Mean Square Algorithm”, IEEE International Conference on Advanced Communication Control and Computing Technologies (ICACCCT), pp. 100 - 103, 2012.
[11] Mohammed Assam Ouali and Kheireddine Chafaa, “SVD-Based Method for ECG Denoising”, IEEE International Conference on Computer Applications Technology (ICCAT), pp. 1 - 4, 2013.
[12] Lukas Smital, Martin Vitek, Jiri Kozumplik, and Ivo Provaznik, “Adaptive Wavelet Wiener Filtering of ECG Signals”, IEEE Transactions On Biomedical Engineering, Volume 60, Issue 2, pp. 437 - 445, 2013.
[13] Ali Marjaninejad, Farshad Almasganj and Ata Jodeiri Sheikhzadeh, “Online Signal to Noise Ratio Improvement of ECG Signal based on EEMD of Synchronized ECG Beats”, IEEE 21th Iranian Conference on Biomedical Engineering (ICBME), pp. 113 – 118, 2014.
[14] Gholam-Hosseini H, Nazeran H and Reynolds K J, “ECG noise cancellation using digital filters,” Proc 2nd lnt Conf Bioelectromagnetism, p.151-152 (1998).
[15] Zhang D., “Wavelet approach for ECG baseline wander correction and noise reduction,” IEEE-EMBS 2005. 27th Annual International Conference of the IEEE, p.1212-1215 (2005).
[16] Y. Der Lin and Y. Hen Hu, “Power-line interference detection and suppression in ECG signal processing,” IEEE Trans. Biomed. Eng., vol.55, p.354-357 (2008).
[17] Phegade, Mrinal and P. Mukherji, “ICA based ECG signal denoising,” Advances in Computing Communications and Informatics (ICACCI), 2013 International Conference on IEEE, p.1675-1680 (2013).
© The authors retain all copyrights
This article is open access and distributed under the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors disclose no conflict of interest or having no competing interest.
Vol. 6, Issue 05, PP. 176-181, May 2019
The applications of Power quality at industrial and commercial scale is very important to be assured for the customer. But due to some reasons the load power system destructed like Sags of voltage, destruction of harmonics, irregularity in the voltage waveform and transient. Sensitive devices of power may also be harshly effected by voltage sags and change in the harmonics. Due to increase the heat in the power system devices and electrodes problem of harmonics could occur that may lead to failure of different speed drives and spin pulses in motors. The necessary requirement in the power system is decrease in harmonics. The use of DVR (Dynamic Voltage Restorer) in the power system devices is the source of reduction of this problem. To overcome the disturbance of voltage Sag and harmonics, it is the efficient and economical solution. Reduction of Total Harmonic Distortion (THD) will increase the quality performance of power system. Dynamic Voltage Restorer is used in this paper. Reduction in % THD and voltage sag are successfully corrected by using DVR on MATLAB/SIMULINK Software Package.
A. Teke, "MODELING OF DYNAMIC VOLTAGE RESTORER", Master of Science, UNIVERSITY OF ÇUKUROVA, Adana, September 2005.
M.D. STUMP, G.J. KEANE, and F.K.S. LEONG, "The Role of Custom Power Products in Enhancing Power Quality at Industrial Facilities", IEEE Energy Management and Power Delivery, 1998, 2: PP. 507-517.
A. Ghosh and G. Ledwich, “Power Quality Enhancement Using Custom Power Devices,” Kluwer Acdemic Publishers, 2002.
R. Buxton, "Protection from voltage dips with the