壁面設置された真空管型集熱器のミラー集光系の性能

抄録

The objectives of this study are to design a mirror concentration system with an evacuated tube heat collector installed on walls and to evaluate its performance. The proposed system consists of a parabolic mirror combined with an involute curved mirror and an evacuated tube. Ray tracing simulation was employed to evaluate the performance of collecting direct sunlight. According to the simulation results, the proposed system collects 5.9 times as much sunlight as an evacuated tube collector does. The heat collecting performance was also investigated experimentally in December 2016 and January 2017. The results indicated that the heat collected by the proposed system was 3.1 times as much as that of single evacuated tube. The proposed system was estimated to have the efficiency of heat collection of 42%.