散射占比对低倍CPC热性能影响的对比实验研究  

COMPARATIVE EXPERIMENTAL STUDY ON PERFORMANCE OF LOW CONCENTRATION RATIO CPC COLLECTORS IN DIFFERENT PROPORTIONS OF DIFFUSE IRRADIATION

作　　者：王健[1] 裴刚[1] 杨明[1] 李桂强[1] 汪云云 李鹏程 

机构地区：[1]中国科学技术大学热科学和能源工程系,合肥230027 [2]深圳大学光电工程学院,深圳518060

出　　处：《太阳能学报》2018年第1期1-7,共7页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51476159;51408578);东莞市引进创新科研团队计划(2014607101008)

摘　　要：搭建聚光比分别为1.5、2.0和3.0的复合抛物面聚光器（CPC）对比实验系统,在集热器进口温度110℃条件下,对比实验研究散射辐照占总辐照比例（散射占比）对3种聚光比CPC系统集热性能的影响,并对我国不同地区典型辐照资源条件下CPC聚光集热的热性能进行分析。结果表明：散射占比对低倍CPC集热性能有明显影响,对于同一聚光比CPC,CPC热效率均随散射占比的降低而提高;对于不同聚光比CPC,1.5×CPC在散射占比高时热效率最高,3.0×CPC仅在散射占比低的晴天具有最高热效率。A compound parabolic concentrator （CPC） collector experiment system is set up. Collector performance of three kinds of different concentration ratio is tested in different proportions of diffuse irradiation at the inlet temperature of 110 ~C. In addition, the thermal performance of CPC in different cities is analyzed under typical irradiation conditions. It indicates that the proportion of diffuse irradiation has a significant effect on the performance of CPC collectors. The thermal efficiency of the same concentration ratio CPC increases as the proportion of diffuse irradiation declines. What＇ s more, The CPC with concentration ratio of 1.5 has the highest thermal efficiency in a high proportion of diffuse irradiation, and the CPC with concentration ratio of 3.0 has the highest thermal efficiency in a sunny day with low proportion of diffuse irradiation.

关 键 词：复合抛物面 低倍CPC 散射占比 热效率 

分 类 号：TK512[动力工程及工程热物理—热能工程]