抄録
Recently in Japan, the interest in clean energy has been increasing especially after the nuclear accident in Fukushima. There is a wind power as one of the clean energy source. However, the wind power generation is difficult to increase the efficiency. Therefore, there is a wind-lends windmill as efficient it. We study the shape of wind-lends. Wind-lends is able to improve the efficiency of wind power generation. It made a difference in pressure between front and behind the windmill and the wind flow faster. This result depending on the shape of wind-lends. To optimize the shape of it, using Taguchi-method. Taguchi-method shows in the strength of the effect on each parameter of wind-lends. In experiments with Eiffel type wind tunnel, the pitot-tube and manometer are used to measure the velocity of the wind. The experimental results are analyzed using the regression-analysis. We select the optimal value for each parameter from the analysis results and determine the optimal shape. This study shows a trend of good shape of the wind-lends
