具有高容忍角平面式日光集光器

Abstract

本論文將提出具有高容忍角的平面式日光收集器，總共分成兩部分進行設計：在集光器部分，當太陽光打入集光器後，光線經由環面鏡及拋物面反射面耦合進入導光板，再透過高折射率透鏡聚焦在導光板平坦的出光端面上；最後以複合式拋物面集光器(Compound Parabolic Collector, CPC)將聚焦的光線進一步集中；在追跡太陽光部分，採水平旋轉平台追跡太陽方位角，以移動式CPC補償太陽仰角所造成的聚焦位置變化；最終太陽能集光器模型之可對應的太陽光仰角之範圍為30°~ 90°，每日作用時長可達到8小時，且幾何集中倍率可達到250倍，在550 nm單頻光模擬結果整體平均效率為81.4%；AM1.5光源(400~900 nm)模擬整體平均效率依然達到77.5%，完成擁有高容忍角及高集中倍率的日光收集器。This paper proposed a planar solar collector with a high tolerance angle, which was divided into two main parts for design. In the collector, the sunlight passed a Y-toroidal lens and reflected on a parabolic surface to converge for being coupled into a light guide plate (LGP). Then, the convergent light passed a lens made of high-refractive index material and focused on a flat end of the LGP. Finally, a compound parabolic collector (CPC) received the focused light for further concentration. In the solar tracker, a planar rotatory stage traced the azimuthal position of the sun, and the movable CPCs compensated for the lateral displacement of the light-focusing position resulted from the polar position of the sun.The solar concentrator model can correspond to the range of the sun's elevation angle from 30° to 90°, the daily working time can reach 8 hours, and the geometric concentration ratio can reach 250. The overall average efficiency simulated for the light source of 550 nm is 81.4%; the simulated overall average efficiency of AM1.5 light source (400~900 nm) still reaches 77.5%.