Toward an Optimum Design of an Amorphous Silicon Photovoltaic/Thermal System:Simulation and Experiments

作     者：REN Xiao LI Jing LIU Weixin ZHU Chuanyong PEI Gang GONG Liang 

作者机构：College of New EnergyChina University of Petroleum(East China)Qingdao 266580China Research Center for Sustainable Energy TechnologiesEnergy and Environment InstituteUniversity of HullHU67RXUK Department of Thermal Science and Energy EngineeringUniversity of Science and Technology of ChinaHefei 230026China 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2023年第32卷第3期

页      面：947-964页

核心收录：

学科分类：08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 

基　　金：sponsored by China Postdoctoral Science Foundation(2022M713463) National Natural Science Foundation of China(52206292) the EU Marie Curie International Incoming Fellowships Program(703746) the Major Program of the Natural Science Foundation of Shandong Province(No.ZR2019ZD11)。 

主　　题：amorphous silicon cell photovoltaic thermal system parametric analysis distributed parameter model frame shadow 

摘      要：Amorphous silicon photovoltaic/thermal(a-Si-PV/T)technology is promising due to the low power temperature coefficient,thin-film property,thermal annealing effect of the solar cells,and high conversion efficiency in summer.The design of a-Si-PV/T system is influenced by a number of thermodynamic,structural,and external parameters.Parametric analysis is useful for a good design of the system.A dynamic distributed parameter model is built and verified in this paper.Outdoor tests are carried out.The impacts of operating temperature,mass flow rate,cover ratio of solar cells,heat transfer area,and frame shadow ratio on its performance are theoretically and experimentally investigated.The results indicate that seven or eight copper tubes are suitable to achieve a high overall efficiency of the a-Si-PV/T system.The frame and tilt angle shall avoid a shadow ratio of more than 8.3%during operation.The difference between power outputs at operating temperatures of 35℃and55℃in the first month is about 0.21%while it drops to less than 0.1%in the twelfth month.Compared with conventional PVT systems,the a-Si-PV/T system benefits from a higher design temperature with a minor efficiency decrement.