三维CPC太阳能聚集特性的数值模拟  

NUMERICAL SIMULATION FOR SOLAR CONCENTRATING CHARACTERISTIC OF THREE-DIMENSIONAL CPC

作　　者：戴贵龙[1] 夏新林[1] 李德富[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨150001

出　　处：《太阳能学报》2011年第9期1419-1423,共5页Acta Energiae Solaris Sinica

基　　金：国家重点基础研究发展(973)计划(2009CB220006);国家自然科学基金(50930007)

摘　　要：根据几何光学原理,通过联合求解高次曲面方程,采用射线踪迹蒙特卡洛法(Monte-Carlo ray-tracing Method,MCRT)模拟了直射太阳光束在三维CPC内的传播过程。通过数值模拟,分析了三维CPC的太阳能聚集能流密度分布、方向分布和透过特性以及这些聚集特性参量随CPC高度截取比例、CPC最大接收角、跟踪误差等因素的变化。结果表明,三维CPC的出射面太阳能热流分布出现峰值;截顶后三维CPC的最大接收角不变,透过率性能有所改善。By combined solution of the quartic surface equations of the 3D-CPC （ compound parabolic concentrator） and other common surface equations, both the solar concentrating performances of the un-truncated 3D-CPC and the truncated 3D-CPC were simulated by ray tracing Monte-Carlo method. The concentrating characteristics effected by intercept ratio, tracking error were considered and discussed. The results showed that the solar thermal flux distributions at the CPC exit surface are extremely nonuniform. The transmission performances of the truncated 3D-CPC are improved compared to the un-truncated 3D-CPC, but the acceptance angle is unchanged

关 键 词：三维CPC 聚光特性 MCRT 

分 类 号：TK511[动力工程及工程热物理—热能工程]