建筑整合式双焦点微型聚光器的设计与性能分析  

Design and Performance of a Building-integrated Bifocal Micro-concentrator

作　　者：方鑫 何俊颖 安巍[1] FANG Xin;HE Junying;AN Wei(School of Mechanical and Power Engineering,Tongji University,Shanghai 201804,China)

机构地区：[1]同济大学机械与能源工程学院,上海201804

出　　处：《上海电力大学学报》2023年第2期203-209,共7页Journal of Shanghai University of Electric Power

基　　金：上海市科技支撑碳达峰碳中和专项(21DZ1207400);上海市自然科学基金(20ZR1459600)。

摘　　要：设计了一种建筑整合式双焦点微型聚光器。光学模拟结果显示,在双焦点无交错式镜场布局下,聚光器的光学效率最高,外墙安装和屋顶安装的光学效率分别为62.5%和63.6%。集热性能测试结果显示,聚光器凭借追踪阳光和散热面积小的优势,相比平板集热器具有更高的集热效率。聚光器安装在屋顶时的日均集热效率为24.3%,安装在外墙时为22.0%,均比平板集热器高10%以上。在满足冬季用水温度的条件下,所设计的聚光器安装在外墙或屋顶时的集热效率均优于平板集热器。A building-integrated bifocal micro-concentrator is designed.The optical simulation results show that the highest optical efficiency can be obtained by a bifocal non-staggered mirrors arrangement,which the daily average optical efficiency of the facade-mounted concentrator and roof-mounted concentrator are 62.5% and 63.6%,respectively.In addition,the experimental results show that the concentrator has higher thermal efficiency with the advantages of tracking sunlight and smaller heat dissipation area.The daily average thermal efficiency of the roof-mounted concentrator is 24.3%,and that of facades installation is 22.0%,which are more than 10% higher than that of the flat-plate collector.Under the condition of satisfying the water temperature in winter,it can be concluded that the thermal efficiency of concentrator is significantly better than that of commercial flat-plate solar collectors when installed on the roofs or facades.

关 键 词：微型聚光器 建筑整合 太阳能利用 光学性能 

分 类 号：TK513.1[动力工程及工程热物理—热能工程]