Investigation of the entropy generation and efficiency of a solar thermophotovoltaic system

作     者：CHEN Xue XUAN YiMin HAN YuGe 

作者机构：School of Power Engineering Nanjing University of Science and Technology Nanjing 210094 China 

出 版 物：《Chinese Science Bulletin》 (Chin. Sci. Bull.)

年 卷 期：2010年第55卷第32期

页      面：3718-3726页

核心收录：

学科分类：080701[工学-工程热物理] 08[工学] 0807[工学-动力工程及工程热物理] 0825[工学-航空宇航科学与技术] 

主　　题：光电系统 熵产生 太阳能 热力学第二定律 电池温度 分析模块 转换效率 模型分析 

摘      要：Based on the second law of thermodynamics,a theoretical model is established for efficiency analysis and optimization of a solar thermophotovoltaic (STPV) system. The entropy generation in the photo-electricity conversion process is numerically calculated and analyzed for the component modules involved in the whole system assembly. The effects of the emitter temperature,concentration ratio,energy bandgap,cell temperature and the transmissivity of the filter on the entropy and the efficiency are investigated. Meanwhile,the conversion efficiencies of the modules are discussed. The following results are obtained:at first the entropy generation of the system reduces but then increases with the rise of the emitter temperature. When the concentration ratio improves,the entropy generation of the system falls. The increase of the bandgap value and chemical potential of the cell also causes the reduction of the entropy generation. Along with the increase of the cell temperature,the entropy generation increases and the conversion efficiency of the STPV system decreases.