抄録
This paper describes the power augmentation of the Orthoptere wind turbine due to several diffusers. The Orthoptere wind turbine is a kind of paddle-type vertical axis wind turbine operated by the effects of both lift and drag forces exerted on the blades. The performance of the Orthoptere wind turbine shows middle characteristics between Sabonius wind turbine and Darius wind turbine. Different from other vertical axis wind turbines, the Orthoptere wind turbine shows directivity respect to wind direction. Using diffuser, power augmentation of the Orthoptere wind turbine could be achieved. The diffuser we used has rectangular cross section. The diffuser is composed of straight duct and divergence part for power augmentation. The experiment was carried out in wind tunnel.
