According to the principle of high performance and low cost,a small 1 trough type solar collector small parabolic trough solar receiverwas designed and madedeveloped for market,which collecting sunlight area is 12 m2.Its the main optimization points including:① The free backplane design reduces the trough reflector structuretheweight and materialsof the trough reflector structureand improve the precisionthe reflector surface accuracy.②The push rod linkage mechanism of push rod linkagereduces thenumber ofdriving devices.③ The separation type structure of reflector panel plays a self-cleaning function and reduces the intensity of manual cleaning.④The closed loop feedback technology is applied to the solar tracking control systemso that it can work all year.When solar radiation intensity is 540～660 W/m2,the experiment results show:circulating water can be heated to more than 170 degrees and the heat collecting efficiency is up to 0.52,but decreases with temperature of water increasing.%按照高性能低成本的原则设计并制作了集热面积为12 m2的商用小型槽式集热器.其主要创新优化之处包括:①通过免背板设计减少了槽式反射镜面结构的重量和用材,提高了镜面曲率精度;②通过推杆联动机构减少了驱动装置;③反射镜面板分离式结构起到了自清洁功能,减轻了清扫的工作强度;④将闭环反馈技术应用到太阳能跟踪控制系统,可实现四季全天候跟踪.现场试验结果表明:在太阳辐射强度为540～660 W/m2时,该集热器可将循环水加热至170℃以上,系统整体集热效率最高可达0.52,但随水温的升高逐渐降低.
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