Vawt

Renewable and Sustainable Energy Reviews 16 (2012) 1926–1939

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Renewable and Sustainable Energy Reviews journal homepage: www.elsevier.com/locate/rser

Vertical axis wind turbine – A review of various configurations and design techniques
Muhammad Mahmood Aslam Bhutta ∗ , Nasir Hayat, Ahmed Uzair Farooq, Zain Ali, Sh. Rehan Jamil, Zahid Hussain
Department of Mechanical Engineering, University of Engineering and Technology Lahore, G.T. Road, Lahore, Punjab 54890, Pakistan

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a b s t r a c t
Increased concern for environment has led to the search for more environment friendly sources of energy. Wind energy can be a viable option in this regard. Vertical axis wind turbines offer promising solution for areas away from the integrated grid systems. However, they have certain drawbacks associated with different configurations. This paper reviews various configurations of VAWT along with their merits and demerits. Moreover, design techniques employed for VAWT design have also been reviewed along with their results. It was learned that coefficient of power (CP ) for various configurations is different and can be optimized with reference to Tip Speed Ratio. Latest emerging design techniques can be helpful in this optimization. Furthermore, flow field around the blade can also be investigated with the help of these design techniques for safe operation. © 2011 Elsevier Ltd. All rights reserved.

Article history: Received 5 March 2011 Received in revised form 10 December 2011 Accepted 18 December 2011 Available online 17 February 2012 Keywords: Vertical axis wind turbine analysis techniques VAWT

Contents 1. 2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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