微型抛物面槽式聚光集热器光学性能研究  

Study on optical efficiency of a microparabolic trough concentrator

作　　者：雷德胜 杨谋存[1] 朱跃钊[1] LEI Desheng;YANG Moucun;ZHU Yuezhao(College of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211800,China)

机构地区：[1]南京工业大学机械与动力工程学院,江苏南京211800

出　　处：《南京工业大学学报（自然科学版）》2018年第5期85-89,103,共6页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家科技支撑计划(2014BAJ01B06);国家自然科学基金(51105192);江苏省自然科学基金(BK2010556)

摘　　要：为使太阳能聚光集热器与建筑更好地结合,提出了一种聚光比为3.4的微型抛物面槽式聚光集热器。从光传播损失、余弦损失以及阴影损失3个方面,建立了微型抛物面槽式聚光集热器光学效率的理论模型;用Sol Trace对微型抛物面槽式聚光集热器的光学效率进行了模拟计算,计算了南北水平和东西水平放置下春分、夏至、秋分和冬至日的平均光学效率,并讨论了集热器与水平面倾角δ对光学效率的影响。结果发现:阴影损失是影响该集热器光学性能的主要因素;集热器南北和东西水平放置时的光学效率分别为54%和48%,而东西放置且与水平面倾角为60°时的光学效率为51%。因此,该集热器可用于建筑物屋顶以及南立面墙,具有很好的应用前景。A micro parabolic trough concentrator with concentrating ratio of 3.4 was developed for the integration of the collectors and buildings.The optical model was established by taking the transmission loss,cosine loss and the shading loss into account.The simulation was carried out by SolTrace Software.The average optical efficiency on spring equinox,summer solstice,autumn equinox and winter solstice was calculated when the collector was horizontally installed in west-east or north-south direction.The effect of tilt angle on the optical efficiency was discussed.Theoretical and simulation results showed that the shading loss was the main factor.The average optical efficiency of west-east and north-south horizontal installment were 54% and 48%,respectively.Specially,the average optical efficiency could reach 51% when the angle between the collector and the south wall equaled to 60°.The proposed solar collector could be applied to roof and south wall of building with a broad application prospect.

关 键 词：抛物面槽式聚光器 光学效率 建筑一体化 SOL Trace模拟 

分 类 号：TK513.1[动力工程及工程热物理—热能工程]