Performance of a Two Bladed Savonius Wind Turbine – A pre-investigative experimental study to decide over a horizontal axis machine
Author(s):
RATAN U GAONKAR, Dr RAMAKRISHNA N HEGDE
Keywords:
Renewable energy; VAWT; Drag type; Savonius; PVC blade; Power
Abstract
Given the scarce availability clubbed with the ill effect of conventional energy on the environment, renewable energy resources have taken the driver's seat. Of late, one such available way is harnessing wind energy because of its affordability and availability. Wind turbines generate electricity by using the power of the wind through a coupled electric generator. Of the two types of wind turbines available, viz. horizontal axis (HAWT) and vertical axis (VAWT) wind turbines, the Savonius rotor has a vertical axis characterized by the economy, simpler geometry generating power at low wind speed, which makes it suitable for efficiently generating mechanical energy. Their performances and efficiencies can be improved with modifications to conventional Savonius wind turbines and rotor blades. In this work Savonius wind turbine is designed and fabricated from a PVC pipe of specific dimensions cut into semi-cylindrical halve with no overlap. The Savonius wind turbine was evaluated at different wind velocities from 2.2 to 6.5m/sec. The output was measured by an electric device. The performances of the wind turbine at various wind velocities were estimated. The present work found that the Savonius wind turbine has good potential to extract wind power at low wind speeds within the tested range. The PVC rotor blades will have adequate strength; non-corrosive hence could be installed on the rooftop. The turbine efficiency could be increased by selecting more than two blades with the introduction of diffuser vanes.
Article Details
Unique Paper ID: 154562

Publication Volume & Issue: Volume 8, Issue 11

Page(s): 521 - 527
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