线性菲涅尔式聚光集热系统研究进展  

Progress of linear Fresnel concentrator heat collection system

作　　者：王锐东[1,2,3] 马军 王成龙[1,2] 俞天智[3] Wang Ruidong;Ma Jun;Wang Chenglong;Yu Tianzhi(Collaborative Innovation Center for Technology and Equipment of Concentrated Solar Power,Lanzhou Jiaotong University,Lanzhou 730070,China;National Engineering Research Center for Technology and Equipment of Environmental Deposition,Lanzhou Jiaotong University,Lanzhou 730070,China;Key Laboratory of Opto-Technology and Intelligent Control,Ministry of Education,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学聚光太阳热能产业关键技术与装备省部共建协同创新中心,甘肃兰州730070 [2]兰州交通大学国家绿色镀膜技术与装备工程技术研究中心,甘肃兰州730070 [3]兰州交通大学光电技术与智能控制教育部重点实验室,甘肃兰州730070

出　　处：《红外与激光工程》2021年第11期236-254,共19页Infrared and Laser Engineering

基　　金：国家自然科学基金(52066010);甘肃省科技计划(20YF8GA039);甘肃省高等学校创新基金(2021B-094);兰州交通大学青年科学基金(N2017036)。

摘　　要：相比槽式聚光集热系统,线性菲涅尔式聚光集热系统光学效率较低,但具有成本优势。为了提高其光学性能和热性能,减少热损失,国内外学者进行了广泛研究。在总结线性菲涅尔式聚光集热系统主反射镜、二次反射接收器和镜场的优化设计,以及系统热性能等国内外已有研究成果的基础上,重点阐述了由阴影与遮挡、末端损失、跟踪误差、积尘、主反射镜镜场几何结构引起的光学损失及改进措施最新研究进展,对主流的几种二次反射接收器进行了对比分析,表明复合抛物面二次反射接收器(Composite Parabolic Concentrator,CPC)最实用。同时对吸热管和工作介质之间的强化传热、采用CPC的线性菲涅尔式聚光器热损失进行了归纳总结,分析了存在的问题及解决方法,指出了线性菲涅尔式聚光集热系统的未来发展方向和改进措施。Compared with the trough concentrator heat collection system,the linear Fresnel concentrator heat collection system has lower optical efficiency,but it has a cost advantage.In order to improve its optical and thermal properties and reduce heat loss,scholars have conducted numerous research.Based on the summary of the optimization design of the main reflector,the secondary reflector and the mirror field of the linear Fresnel concentrator and heat collection system,as well as the thermal performance of the system and other existing research results at home and abroad,the focus was on the shading and blocking,end loss,tracking error,dust accumulation,optical loss caused by the geometric structure of the main mirror field and improvement measures.A comparative analysis of several mainstream secondary reflection receivers shows that CPC-type secondary reflection receiver is the most practical.At the same time,the enhanced heat transfer between the heat absorption tube and the working medium,and the heat loss of the linear Fresnel condenser using CPC were summarized,the existing problems and solutions were analyzed,the future development direction and improvement measures of LFR system were point out.

关 键 词：太阳能 线性菲涅尔式聚光器 二次反射接收器 光学性能 热性能 

分 类 号：TK519[动力工程及工程热物理—热能工程]