Optical Performance of a Uniform Solar Concentrator With a Rectangular Tube Absorber

被引：0

作者：

Chen, Jia-Xiang ^{[1
,2
]}

Yang, Jun-Ling ^{[1
]}

Yang, Lu-Wei ^{[1
,2
]}

机构：

[1] Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing,100190, China

[2] University of Chinese Academy of Sciences, Beijing,100049, China

来源：

Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics | 2019年 / 40卷 / 12期

关键词：

Energy conversion - Concentration (process) - Solar absorbers;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

This paper presents a uniform solar concentrator with a rectangular tube absorber (USC-RT). A mathematical model for the reflector profile of a USC-RT is developed, solved and validated. An optical model is established for the energy conversion process of a USC-RT. Annual energy simulation based on the SMARTS model is processed for a USC-RT with an aperture area of 10 m2. The rotation angle and the slope angle of the USC-RT are optimized. The results show that the optimum rotate angle of the USC-RT is 0°which means that the collector is orientated with its long axis in the north-south direction. The optimum slope angle and optimum optical efficiency are obtained for the USC-RT in different adjustment modes. The average value of the optimal annual total optical efficiency of the USC-RT in different latitudes is 92.0%, 96.8% and 98.1%, respectively, when the collector slope angle is fixed, adjusted one time each quarter, and adjusted one time each month. The annual total optical efficiency of the USC-RT with the optimal combination of rotate angle and slope angle is significantly higher than that of the horizontally east-west orientated USC-RT, and is also significantly higher than that of the horizontally north-south orientated USC-RT in the high latitudes. © 2019, Science Press. All right reserved.

引用

页码：2712 / 2719