초록(영문)
The purpose of this study is to improve the efficiency of minor hydroelectric power generation which is using environment-friendly
water energy by modulating related variables. First, the energy generation efficiency according to the shape of aberration and pitch angle
was the most in Francis aberration that expanded the blind and the lowest in Propeller aberration. Second, in the accelerating device, the
maximum current amount was higher than in the case where there is no accelerating device. Third, in the external model, the variation
of the vortex caused by the curvature of the model was investigated by using the Schlieren method. As a result, it was found that the bird
model produced the lowest amount of vortex.
Through the study, the most influential factor for the improvement of minor hydroelectric power generation efficiency is the propeller
and the external model. The improved Francis type aberration which enlarges the area of the blind, the inlet accelerator which can
increase the flow rate, and the external model shaped like a bird has shown an improvement of the power generation efficiency. Also, this
study will provide important implications for developing an efficient portable minor hydroelectric power generation device that can be
owned by individuals in the future.