Investigating the factors affecting the performance of Savonius wind turbine

Document Type : Review Article

Authors

1 PhD Candidate, Aerospace Research Institute, Tehran, Iran

2 Assistant Professor,, Aerospace Research Institute, Tehran, Iran

3 Associate Professor, Aerospace Research Institute, Tehran, Iran

4 Assistant Professor, Caspian Faculty of Engineering, University of Tehran, Rezvanshar, Iran

10.52547/jrenew.10.2.192

Abstract

Nowadays, wind energy is considered one of the cleanest sources of energy, and the capacity of wind power plants is growing around the world. In particular, the design and construction of small wind turbines have been the subject of much research. This article deals with the Savonius wind turbine, a well-known vertical axis turbine. First, the mechanical principles of operation of this type of wind turbine are explained. Then, the criteria for determining its efficiency and performance, such as power and torque coefficients, are stated. The sequel discusses the geometric and technical factors affecting its efficiency. These factors include the overlap ratio, number of blades, number of stages, twist angle, shaft diameter, and the installation of end plates. The current paper can be helpful for those trying to improve the performance of this type of turbine. In this regard, there are some proposed innovative designs to enhance the performance of the Savonius turbine concerning experimental results and their numerical simulations. These designs increase the maximum power coefficient to 38%, although they complicate the turbine structure. Some of these innovative designs are also reviewed.

Keywords

Main Subjects

References

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Journal of Renewable and New Energy
Volume 10, Issue 2 - Serial Number 20
September 2023
Pages 192-205

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History

  • Receive Date: 13 July 2022
  • Revise Date: 13 November 2022
  • Accept Date: 28 December 2022

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