一种槽式太阳能聚光集热器的热性能实验研究  

Experimental Research on Thermal Performance of a Trough Solar Collector

作　　者：李珂[1] 匡荛[1] 仇秋玲 

机构地区：[1]东南大学江苏省太阳能技术重点实验室,南京210096

出　　处：《发电设备》2017年第4期245-249,共5页Power Equipment

摘　　要：针对一种槽式太阳能集热器的热性能进行了一系列的实验研究,确定其室外热性能测试的实验系统方案,通过测试实际工况下集热器运行数据,分析集热器的运行特性。结果表明:水的流量、太阳辐射强度对集热器热效率影响很大,流量由0.32 m^3/h增大到0.65 m^3/h时,集热效率有所降低,最大偏差为3.1%;集热器热效率与太阳辐射强度变化趋势相同,集热器热效率最大达到46.6%。To study the thermal performance of a trough solar collector, a series of studies were carried out so as to design the experimental system for outdoor thermal performance test, and to analyze the operation characteristics of the collector by measuring its operation data under actual working conditions. Results show that both the water flow rate and solar radiation intensity have great influence on the thermal efficiency of the collector, which would reduce to some extent with the maximum deviation of 3.1% when the flow rate increases from 0.32 m3/h to 0.65 m3/h. The thermal efficiency varies in the same trend of solar radiation intensity, and the maximum value may get up to 46.6%.

关 键 词：槽式太阳能集热器 热损失 集热效率 

分 类 号：TK515[动力工程及工程热物理—热能工程]