均匀能流密度槽式聚光器设计及光学特性  

Design and optical characteristics of uniform energy flux density trough condenser

作　　者：赵芳 蒋波 程道来 Zhao Fang;Jiang Bo;Cheng Daolai(School of Urban Construction and Safety Engineering,Shanghai Institute of Technology,Shanghai 201418,China;School of Mechanical Engineering,Shanghai Institute of Technology,Shanghai 201418,China)

机构地区：[1]上海应用技术大学城市建设与安全工程学院,上海201418 [2]上海应用技术大学机械工程学院,上海201418

出　　处：《可再生能源》2022年第12期1583-1590,共8页Renewable Energy Resources

基　　金：上海市科技成果转化促进会-联盟计划项目(LM201866)。

摘　　要：太阳能聚光系统中接收器表面能流密度分布不均匀,会对其光电转换效率以及自身结构的稳定性造成一系列不良影响。为提高接收器能流密度均匀性,文章将微元法与几何构造法相结合,提出Ⅰ型和Ⅱ型两种聚光器模型,利用Trace Pro软件对这两种聚光器的光学特性进行模拟分析,确定出最优模型,进而分析几何聚光比、跟踪误差、安装误差对该模型能流密度分布的影响。结果表明:Ⅱ型聚光器光学特性最优,当几何聚光比为20时,分别以平行光及太阳光入射,接收器上能流密度均匀分布的区域分别占接收器区域的80.18%和75.17%,其光学效率达到99%和95%。此外,随着跟踪误差和安装误差的增大,接收器能流密度均匀分布的区域都减小。本研究对聚光器的优化设计和提高聚光型太阳能系统能源利用效率具有参考意义。The uneven distribution of the energy flux density on the receiver in solar concentrator systems has a series of adverse effects on its photovoltaic conversion efficiency and the stability of its own structure.To improve the receiver energy density uniformity,this paper combines the micro-element method and the geometric construction method to propose two types of concentrator models,TypeⅠand TypeⅡ.Trace Pro software is used to simulate and analyze the optical characteristics of these two types of concentrators to determine the optimal model,and then analyze the effects of geometric concentration ratio,tracking error,and installation error on the energy density distribution of this model.The results show that the optimal optical characteristics of the typeⅡconcentrator,when the geometric focusing ratio is 20,the area of uniform distribution of energy flow density on the receiver accounts for 80.18%and 75.17%of the total area under parallel light and sunlight incidence,respectively,and its optical efficiency reaches 99%and 95%.In addition,the area of uniform distribution of energy flux density on the receiver spot decreases with the increase of both tracking error and mounting error.This study is of reference significance for the optimal design of concentrators and the improvement of the energy utilization efficiency of concentrating solar systems.

关 键 词：聚光器 聚光比 能流密度 光学特性 

分 类 号：TK513.3[动力工程及工程热物理—热能工程]