等光强分布的槽式反射聚光器的设计  

Design of Reflective Trough Solar Concentrators with Even Distribution of Energy-Flux-Density

作　　者：马保宏[1,2] Ma Bao-hong(College of Physics and Electromechanical Engineering,Hexi University;Institute of New Energy,Hexi University,Zhangye Gansu 734000)

机构地区：[1]河西学院物理与机电工程学院 [2]河西学院新能源研究所,甘肃张掖734000

出　　处：《河西学院学报》2020年第5期17-22,共6页Journal of Hexi University

摘　　要：设计了一种新型的等光强分布的槽式反射聚光器,提出了其柱面方程,研究了反射柱面的面型结构和聚光比、反射柱面的半宽、平面光伏电池的半宽及位置之间的关系.研究结果表明,反射柱面的剖面曲线呈凹曲线,其面型结构随聚光比、平面光伏电池的半宽和位置的变化而变化;并且平面光伏电池和反射柱面存在临界最大半宽,最大半宽与聚光比和平面光伏电池的位置有关.与江守利等设计的等光强分布的折平板聚光器相比,在聚光比、平面光伏电池的位置和半宽相同的情况下,折平板聚光器反射面的半宽是626mm,需要28块镜片,本文所设计的聚光器反射面半宽是625mm,反射面连续光滑,且设计时只需要将聚光比、平面光伏电池的位置和半宽带入反射柱面的参数方程,从而可以避免计算反射板数量、宽度、倾角和坐标位置的繁琐过程.A trough reflect concentrator with even distribution of Energy-Flux-Density is designed.The equation of the trough reflector is presented.The properties of reflector and relationship of half width of reflector,the concentra⁃tion ratio,half width as well as position of the plane PV panels are studied.The results show that:the profile curve of the trough reflector is concave which affected by concentration ratio,half width and position of the plane PV panels.Especially,there is a maximum half-width of the plane PV panels and the trough reflector which varied with concen⁃tration ratio and position of the plane PV panels.Compared to iso-intensity zigzag-plate reflective concentrating system on the same concentration ratio,half width and position of the plane PV panels,the reflector of zigzag-plate reflective concentrating systemneeds 28 mirrors with half width 626mm while the reflectordesigned in this paper has smooth sur⁃face with half width 625 mm.Furthermore,the design only needs to incorporate the concentration ratio,position and half width of the planar photovoltaic cells into the parametric equations of the reflecting cylindrical plane,thus avoid⁃ing the tedious process of calculating the number,width,inclination and coordinate position of the reflecting plates.

关 键 词：几何光学 反射柱面 平面光伏电池 聚光比 

分 类 号：TE513.1[石油与天然气工程—油气田开发工程] O435.1[机械工程—光学工程]