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本文介绍了一种利用圆柱面菲涅耳镜组成的太阳能集热系统,该系统主要由菲涅耳聚光器、二次聚光器、太阳跟踪器、换热器和负载等部件组成。介绍了圆柱面菲涅耳透镜的设计思路,并采用工业化方法研制成功了0.65m×1 m的线聚焦圆弧形菲涅耳透镜,并利用该透镜搭建太阳能集热系统研究平台。在实际天气下对该系统性能进行了测试,结果表明,该系统可以实现集热温度200℃以上,在集热温度小于100℃时,中午10:00.14:00时间段,该系统的集热效率可以达到近60%,午后14:00-15:00时段,效率可以达到近38%。说明该系统在一天之内有6 h高效运行。
This paper introduces a solar collector system using cylindrical Fresnel mirror. The system mainly consists of Fresnel condenser, secondary condenser, solar tracker, heat exchanger and load components. The design principle of cylindrical Fresnel lens was introduced. A line-focused Fresnel lens of 0.65m × 1m was successfully developed by industrial method. The research platform of solar thermal collector system was built using this lens. The performance of this system was tested under actual weather conditions. The results show that the system can achieve a temperature above 200 ℃. When the collector temperature is less than 100 ℃, at 10: 00.14: 00 in the afternoon, Reaching nearly 60%, the afternoon 14: 00-15: 00 hours, the efficiency can reach nearly 38%. It shows that the system has 6 hours efficient operation in one day.