Designing, fabrication, testing and evaluation of vertical axis straight bladed Darrius type wind turbine are done. Calculations are carried out for a specified load, then Darrius type wind turbine, having the capacity to drive that load is designed. The airfoils of turbine are symmetrical with good lift to drag ratio. Initially turbine with fixed blade is designed, fabricated and its performance evaluated in lab with real wind. Efficiency has been calculated by testing the turbine with and without load.
Bilal Anwar Designing Fabrication Testing and Performance Evaluation of a Straight Bladed Darrius Type Ver International Journal of Engineering Works Vol. 7 Issue 01 PP. 74-79 January 2020 https://doi.org/10.34259/ijew.20.7017479
 A. P. dannemand, "Review of historical and modern utilization of wind power," Rose National Laboratory, 1998.
 S. Emies, Wind Energy Meteorology, Switzerland: Springer International Publications, 2017/2018.
 H. B. S. Eriksson, "Evaluation of different turbine concepts for wind power," Renewable and Sustainable Energy Reviews, vol. 12, pp. 2-5, 2008.
 I. G. K.Pope, "Energy and exergy efficiency comparison of horizontal and vertical axis wind turbines," Renewable Energy,, vol. 35, pp. 6-9, 2010.
 H. B. a. Y. Yao, "Effect of Camber Airfoil on Self Starting of Vertical Axis Wind Turbine .," Journal of Environmental Science and Technology, vol. 4, pp. 302-312, 2011.
 A. R. R. Ahmed M. El Baz, "Computational Modelling of H-type Darrius Vertical Axis Wind Turbine with," in Eleventh International Conference of Fluid Dynamics, Egypt, 2013
 W. Y. j. W. Ji Yao, "Numerical simulation of aerodynamic performance for two dimensional wind turbine airfoils," in International Conference on Advances in Computational Modeling and Simulation, Kunming , 2012
 D. S.-K. T. A. F. M. u. Islam, "Aerodynamic models for Darrieus-type straight-bladed vertical axis wind turbines," Renewable and Sustainable Energy Reviews, vol. 12, pp. 1087-1109, 2008
 D. S.-k. T. A. F. Muzahiril Islam, "Aerodynamic Model for Darrieus-type Streight-bladed Vertical Axis Wind Turbine," Renewable and Sustainable Energy Review, vol. 12, no. 4, pp. 8-12, 2018.