中文摘要：

为了探寻一种在中高温场合使用的平板式太阳能集热器,设计和开发了小流量、大温差的蛇形管平板式太阳能集热器,并进行了空晒试验和瞬时效率试验。试验结果表明：集热器的空晒温度可达170.2℃,热损系数为5.239 W/（m2.℃）,载热工质进口温度70℃时效率52%—55%。通过对集热器各部分温度变化趋势的比较,提出改进措施,以提高蛇形管平板式集热器在中高温工况下的集热性能。

英文摘要：

A serpentine-flow flat-plate solar collector of small volume and large temperature difference is designed and developed in order to explore the flat-plate solar collector used in high temperature situation.And experiment of stagnation and instantaneous efficiency is carried out.The results shown that stagnation temperature can reach 170.2 ℃ and heat loss coefficient is 5.239 W/（m2·℃）.Efficiency of solar collector between 52% —55% when inlet temperature of working fluid is 70 ℃.By comparison the temperature trend of various parts of the collector the corrective measure is proposed to improve performance of serpentine-flow flat-plate solar collector in high temperature conditions.