OS2-11 ディフューザとノーズコーンの組み合わせによる小型風車の性能改善(OS2 自然エネルギー,循環型社会における動力エネルギー技術)

概要

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This study is considered micro wind turbines that installed in urban area. Generally, such area has low annual wind speed and high fluctuation in many cases. The purpose of this study is to enlarge the wind turbines output power and to make wind turbines insensible wind speed fluctuation by improving the power curve shape with a combination of nosecone and diffuser casing. In this study, the utilization of diffuser for wind turbines is considered for increasing the avail ability of wind turbine by accelerating locally the wind speed that flow in to wind turbines. In addition, the nosecone with aerodynamic form was introduced. The nosecone has effect of improving the flow inside diffuser and surface of blade. In this study, the change of performance is measured by experimental method. The parameters are divergence angle of diffuser, nose angle of nosecone, and blade shapes. As a result, output power of wind turbines is increased focused on operating in low tip speed ratio and improved power curve shape.
2007-06-13