Effect of geometrical parameters on the performance of conventional Savonius VAWT: A review

Wind power is one of the main sources of renewable energy. New applications of this technology are currently under development through small vertical axis wind turbines, allowing energy production in small spaces even at low wind speeds. Therefore, creating an effective turbine design methodology ta...

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Bibliographic Details
Published in:Renewable & sustainable energy reviews 2022-06, Vol.161, p.112314, Article 112314
Main Authors: Cuevas-Carvajal, N., Cortes-Ramirez, J.S., Norato, Julian A., Hernandez, C., Montoya-Vallejo, M.F.
Format: Article
Language:English
Subjects:
Geometric parameters
Renewable energy
Savonius-type wind turbine
Small vertical axis wind turbine
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Summary:Wind power is one of the main sources of renewable energy. New applications of this technology are currently under development through small vertical axis wind turbines, allowing energy production in small spaces even at low wind speeds. Therefore, creating an effective turbine design methodology tailored to these operating conditions has been the subject of extensive research. The Savonius-type vertical axis wind turbine is one of the most widely used due to its low cost and easy manufacturing. Several works have examined the effect of various geometric parameters on the performance of the Savonius-type wind turbine. However, there are no published overarching conclusions about these works. Thus, this paper aims to review and discuss in a concise way experiments and simulations carried out by several authors evaluating the effect of some geometric parameters on the maximum power and torque coefficient of Savonius vertical axis wind turbines. The paper also discusses additional experiments that should be performed in future work. •The effect of geometrical parameters of Savonius-type vertical axis wind turbine rotor on its efficiency is reviewed.•Power and torque coefficients response to variation of four geometrical parameters are discussed.•Geometrical parameters as aspect ratio, twist angle, overlap ratio, number of blades, and number of stages are explored.•Diverse experimental and numerical researches are explored and maximum power and torque coefficients found are graphically presented as function of each geometrical parameter.
ISSN:1364-0321
1879-0690
DOI:10.1016/j.rser.2022.112314