作　　者： ; ; ; ; ; (赵芫桦）; (宿建峰）; (李和平）;

机构地区： 中国科学院工程热物理研究所

出　　处： 《工程热物理学报》 2010年第4期541-544,共4页

摘　　要： 本文针对30 m^2槽式太阳能集热试验装置,对太阳能集热器的性能进行了模拟。分析了太阳能集热器光热转化过程,建立了太阳能能量转换与传递模型,并开发了模拟计算程序,研究了集热器关键结构参数和运行参数对集热性能的影响规律。具体考察了太阳辐照强度、工质流量、环境风速、吸热管管径等对集热效率的影响。结果表明:太阳能集热器的集热效率随太阳辐照强度的增加而增大,随工质流量的增加而增大,存在最佳的吸热管管径使得集热效率最大。研究结果将为太阳能集热器的设计提供参考依据。 Based on 30 m^2 Parabolic Trough Collectors（PTCs） experimental devices,the simulation on the performance of（PTCs） was carried out.Analyzing the process of the solar radiation converted to solar thermal energy,we developed an energy transfer model of PTCs,and a simulation program was obtained.The effects of key parameters of operating and collector structure on the performance for the PTCs were investigated.The relationship of efficiency with the solar flux,the heat transfer fluid flow rate,the wind speed,the diameter of the receivers was also found.The results showed that collector efficiency increased with the increase of the solar flux,and the heat transfer fluid flow rate, and the optimal receiver diameter was obtained.The encouraging results will provide a reference for the design of PTCs.

关 键 词： 槽式太阳能集热器 数值模拟 集热效率

领　　域： [动力工程及工程热物理] [动力工程及工程热物理]