Abstract
Savonius is a drag type vertical axis wind turbine. Savonius wind turbines have a low cut-in speed and can operate at low wind speed. It is suitable for small scale power generation, such as individual domestic installations. In this paper, investigation into the relationship between the type of Savonius rotor, the torque and the mechanical power generated was carried out. Also an illustration on how the type of rotor plays an important role in the prediction of mechanical power of wind turbine powered car. The main purpose of this paper is to predict and investigate the aerodynamic effects by means of velocity analysis on the performance of a wind turbine powered car by converting the wind energy to mechanical energy to overcome load applied on the rotating main shaft. The predicted result based on theoretical analysis is compared with experimental results obtained from literature. Prediction of the torque was done at a wind speed of 4 m/s, and an angular velocity of 130 RPM according to meteorological statistics in Northern Cyprus.
Highlights
An increase in the use of wind energy in the past decade[1] has inspired extensive researches on the wind turbine technology, with more focus on Savonius wind rotor
The straight bevel gear is used to convert the wind energy to mechanical energy to overcome the load exercised on the main shaft under low speed
The torque and mechanical power are measured at a wind speed 4m/s
Summary
An increase in the use of wind energy in the past decade[1] has inspired extensive researches on the wind turbine technology, with more focus on Savonius wind rotor. It was developed 1925 by Sigurd Savonius, a Finnish engineer as a vertical axis wind rotor [2]. The Savonius wind rotor is one of the simplest and cheapest vertical axis wind turbines It has good starting characteristics with initial high torque, relatively low operating speeds and ability to capture wind and operate from any direction [3]. The major setback of this rotor is its low aerodynamic efficiency
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