反射式顺向聚焦整体跟踪式高温太阳能集热装置

THE REFLECTION STYLE SAME DIRECTION FOCUSING HIGH TEMPERATURE SOLAR COLLECTOR WITH HOLISTIC TRACKING FUNCTION

提出了一种新型组合抛物面聚光器,实现了对太阳光的反射式顺向聚焦。该新型聚光器与一个腔体式集热器结合,组成了一个具有整体跟踪功能的中高温太阳能集热装置。介绍了该组合抛物面聚光器的工作原理和设计方法,给出了其重要的设计参数。同时,在实际天气条件下,对该新型中高温太阳能集热装置进行了实际测试,给出了实际运行结果。实验结果表明,在北京冬季条件下,装置的空晒温度最高可达330℃,有负载时集热效率可达43%,可广泛应用于太阳能高温集热领域。

A new compound parabolic concentrator which could actualize same direction focusing with sun light through reflection method was proposed in this paper. A high temperature solar collector with holistic tracking function is composed of the concentrator and a cavity style heat collector. The operation principle and design method of the concentrator were presented and the important design parameter range were determined. An experimental unit was developed and its perfor- mance was measured under the practical weather conditions. The experimental results indicate that the collector can reach 330℃ in winter when it has no load. Its efficiency can reach up 43% when it has load.