作者: H. S. Patil
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摘要: Growing concern for the environment degradation has led to world’s interest in renewable energy sources. Wind is rapidly emerging as one of most cost-effective forms with very significant increases annual installed capacity being reported around world. The favoured form turbines used electricity generation purposes Horizontal Axis Turbine (HAWT) low solidity ratio (ratio blade area swept area) and high tip speed ratio, λ = ΩR/Vwind, where R radius blades Vwind wind velocity. This type turbine a efficiency or coefficient performance (Cp), but relatively torque. kinetic associated movement atmospheric air. systems irrigation & milling have been use since ancient times beginning 20th century it generate electric power. Windmills water pumping many countries particularly rural areas. transform into mechanical power, which can then be directly grinding etc. further converting power electricity. singly clusters called ‘wind farms’. Small aero-generators charge large batteries. Five nations –Germany, USA, Denmark, Spain India account 80% worlds capacity. continues fastest growing source worldwide ranks 5th world largest capacities established commercial projects. In states Tamilnadu Gujarat lead field energy. There about dozen pumps various designs providing agriculture domestic all scattered over country. Today major player global market. present work was originally devised student project examine possibility developing small scale, torque, self-starting HAWT applications such pumping. following we outline development concept PVC HAWT, experimental setup device that includes design, manufacture, commissioning preliminary testing