Abstract
Exergy analysis is a vital tool for wind power development apart from energy analysis. The present study is based on a comparative energy and exergy analysis of Savonius wind rotor and hybrid H-Savonius wind rotor based on the parameters- power coefficient,
Highlights
The gradual extinction of conventional energy sources has dragged the research orientation towards renewable energy with probable reasons being the rising scales of global warming due to greenhouse gases
The performance of all the three designed rotors is analyzed in terms of coefficient of power (Cp), power output (P) and exergy efficiencies at four different wind velocities i.e 7.5, 8.5, 10.5 and 12.5 m/s
It can be seen that with an increase in wind velocity (Reynolds number, Re), there is an increment in power coefficient attaining its maximum value at 10.5 m/s after which it decreases with further increase of wind velocity to 12.5 m/s
Summary
The gradual extinction of conventional energy sources has dragged the research orientation towards renewable energy with probable reasons being the rising scales of global warming due to greenhouse gases. The cleanest and promising candidate amongst all alternative energy sources, and increasing demand for renewables over conventional energy aroused a keen interest in wind energy technology. It has an inherited quality of being freely available in abundance. The rotating wind machines make use of kinetic energy of wind converted into mechanical energy for its power extraction and based on the axis of turbine rotation the wind machines can be classified mainly into two types. The common vertical axis wind turbines (VAWT) are shown below in figure 1
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