| Summary: | 碩士 === 國防大學理工學院 === 機械工程碩士班 === 99 === The experimental study of aerodynamic characteristics of vertical axis wind turbine (VAWT) blades has been conducted in the CCIT suction-type low speed wind tunnel. Torque and rotation speed were measured by using torque meter to analyze the effects of blade-section shape on the performance of wind turbine.
The test model of experiments in the research was Darrieus-type straight-bladed VAWT. Three shapes of blade-section, NACA0022, NACA6404, NACA6422 were taken in this research. Effects of thickness and camber of blade-section, blade numbers, and blade setting angles on the performance of VAWT have been analyzed in detail.
The results show that NACA6422 blade-section has rotation speed of 42% higher than that of NACA0022. NACA6422 also shows that about 10% higher output power than that of NACA0022. Therefore, in general blades with anti-symmetric and thick blade-section are more suitable for applying to VAWTs. All results of this study can be used in future VAWT blade optimization design.
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