Micro-concentrators installed on building facades have great potential in the field of solar energy utilization technology for high-rise buildings.A model is proposed to calculate the weighted average optical efficiency,which integrates two dimensions of solar radiation resources and the optical efficiency.This model is used to investigate the optical performance of a dual-focus micro-concentrator under different tracking methods.By calculating the annual weighted average optical efficiency of 4 cities,the result reveals that the efficiency is at its lowest in summer and highest in winter when the micro-concentrator is installed on facades.The latitude of the installation site has a greater effect on the optical efficiency.In addition,this paper analyzes the suppressive effect of the reflective film installed at the end of the concentrator on reducing cosine losses based on the optical simulation results.
关键词
太阳能利用技术/微型聚光器/光学性能
Key words
solar energy utilization technology/micro concentrator/optical performance
维普
万方数据