抛物面槽式太阳能集热器热损失因素研究  

Study on Heat Loss Factors of Parabolic Trough Solar Collectors

作　　者：徐立[1,2,3,4] 孙飞虎[1,2,3,4] 李钧 张强强[2,3] XU Li;SUN Feihu;LI Jun;ZHANG Qiangqiang(Key Laboratory of Solar Thermal Energy and Photovoltaic System,Chinese Academy of Sciences,Haidian District,Beijing 100190,China;Institute of Electrical Engineering,Chinese Academy of Sciences,Haidian District,Beijing 100190,China;University of Chinese Academy of Sciences,Haidian District,Beijing 100049,China;Beijing Engineering Research Center of Solar Thermal Power,Haidian District,Beijing 100190,China)

机构地区：[1]中国科学院太阳能热利用及光伏系统重点实验室,北京市海淀区100190 [2]中国科学院电工研究所,北京市海淀区100190 [3]中国科学院大学,北京市海淀区100049 [4]北京市太阳能热发电工程技术研究中心,北京市海淀区100190

出　　处：《发电技术》2023年第2期229-234,共6页Power Generation Technology

基　　金：国家重点研究发计划项目(2019YFE0102000)。

摘　　要：将太阳能热发电技术与分布式能源系统相结合,有利于加大可再生能源在能源消费结构中的比重。抛物面槽式太阳能集热器是目前太阳能热发电中应用最为广泛的太阳能-热能转化设备,其运行特性决定了太阳能热发电技术与分布式能源系统中其他能源技术是否能够相互协同。因此,针对影响槽式集热器运行特性的热损失,开展了基于现场的规模化实验系统测试工作,验证了所建槽式集热器数学模型,并且进一步应用该模型对真空区残留气体量、风速和吸热体发射率等因素开展了参数比较分析研究。Combining solar thermal electricity technology with distributed energy system is conducive to increasing the proportion of renewable energy in the energy consumption structure.Parabolic trough solar collectors are currently the most widely used solar-thermal energy conversion equipment in solar thermal electricity.Their operational characteristics determine whether solar thermal electricity technology and other energy technologies in distributed energy systems can cooperate with each other.Aiming at the heat loss affecting the operation characteristics of the trough collectors,this paper carried out the on-site utility-scale experimental system test,then verified the established mathematical model of the trough collectors,and further applied the model to analyze the parameters of the residual gas volume in the vacuum zone,the wind speed,and the emissivity of the absorber.

关 键 词：太阳能热发电(STE) 分布式能源系统 太阳能集热器 热损失 

分 类 号：TK513.1[动力工程及工程热物理—热能工程]