太阳能建筑采暖系统槽式复合多曲面聚光器性能研究  

Performance of a trough compound parabolic concentrator for solar water heating system

作　　者：贾柠泽 任志宏[1] 常泽辉[1,2] 李文龙[1] 郑宏飞[3] 

机构地区：[1]内蒙古工业大学能源与动力工程学院,内蒙古呼和浩特010051 [2]内蒙古工业大学风能太阳能利用技术教育部重点实验室,内蒙古呼和浩特010051 [3]北京理工大学机械与车辆学院,北京100081

出　　处：《可再生能源》2017年第8期1156-1161,共6页Renewable Energy Resources

基　　金：国家自然科学基金项目(51666013);内蒙古自然科学基金项目(2013MS0704;2015MS0545);内蒙古工业大学风能太阳能利用技术省部共建教育部重点实验室开放基金(201511);内蒙古工业大学科研重点项目(ZD 201507)

摘　　要：为提高北方寒冷地区太阳能建筑采暖系统的适用性,研制了一套聚光比为3.9的非跟踪式复合多曲面聚光器(CPC)。该聚光器具有运行稳定、无运动部件及易于制造等特点。基于Light Tools光学软件,分析不同入射偏角和接收体偏差角度条件下的聚光特性,并对安装于呼和浩特市(北纬40°50')的太阳能建筑采暖系统在晴天和多云气象条件下不同安装倾角聚光器的光热性能进行对比研究。结果表明:当入射偏角为10°时,聚光器的光线汇聚率为55.2%,当板式接收体偏差角度为12°时,聚光器的汇聚率仍为93.4%;晴天运行时,安装倾角为45°的聚光器出口导热油温度比正入射时低3℃左右,多云条件下,接收体内导热油温度变化曲线平缓,说明聚光器对跟踪精度要求低,适合于应用到建筑采暖系统中。Aiming at improving the utilization of solar water heating system in cold areas, a nontracking Compound Parabolic Concentrator（CPC） with a concentration rate of 3.9 has been proposed. The concentrator has the characteristics of operating stabilization, no mechanical movement and easy manufacturing. Based on the Light Tools optical simulation software, the concentrating performance of this CPC at different incidence angle and deviation angle of the flatplate receiver were simulated. A test system built in Hohhot at the latitude of 40°50＇ N to evaluate the characteristics of the device under sunny day and cloudy day. The results indicate that the overall ray＇s receiving rate of 55.2% is obtained at the incidence angle of 10 °, the overall ray＇s receiving rate of 93.4% can be obtained at the deviation angle of 12 °. On sunny day, the outlet temperature of thermal oil of the device at the title angle of 45 ° is lower than that of the device at the title angle of 55 ° by about 3 ℃. In the cloudy day, the thermal oil temperature curve of the device is steady. Analysis results show that the tracking accuracy required of the concentrator is lower. The CPC is suitable to provide heat energy for building in cold areas.

关 键 词：复合多曲面 太阳能 采暖系统 性能 建筑 

分 类 号：TK519[动力工程及工程热物理—热能工程]