抄録
In recent years, power generation using natural energy has attracted attention. Among them, hydroelectric power can be stably supplied with little effect of weather and can supply high density energy. In our laboratory, we have been conducted on the research on the undershot cross-flow water turbine applied to an open channel by removing the casing and guide vane from the cross-flow water turbine which is a water turbine for pipelines. Previous studies have shown that placing a straight blade, which is easy to manufacture, radially relative to the water turbine can provide relatively good performance. However, the details of the effect of the straight blade angle are not clear. So, in this research, we researched the effects of blade angle on turbine performance and we examined the effect of it on each component of torque. As a result, the water turbine performance improved as the blade angle increased. Also, the gravity component was dominant in each mechanical component torque and it increases as the blade angle increases.
