Experimental evaluation of factors affecting performance of concentrating photovoltaic/thermal system integrated with phase‐change materials(PV/T‐CPCM)  

作　　者：Zhaoyang Luan Lanlan Zhang Xiangfei Kong Han Li Man Fan 

机构地区：[1]School of Energy and Environmental Engineering,Hebei University of Technology,Tianjin,300401,China [2]School of Mechanical Engineering,Beijing Institute of Technology,Beijing,100081,China

出　　处：《Energy Storage and Saving》2024年第1期30-41,共12页储能与节能（英文）

基　　金：supported by the Hebei Province Postdoctoral Merit Funding Program(Grant No.:B2022005004);the Science and Tech-nology Nova Plan of Hebei University of Technology(Grant No.:JBKYXX2207);the National Natural Science Foundation of China(Grant No.:51978231);the S&T Program of Hebei(Project No.:216Z4502G);the Natural Science Foundation of Hebei Province(Grant No.:E2020202196).

摘　　要：The photovoltaic/thermal(PV/T)system is a promising option for countering energy shortages.To improve the performance of PV/T systems,compound parabolic concentrators(CPCs)and phase-change materials(PCMs)were jointly applied to construct a concentrating photovoltaic/thermal system integrated with phase-change materials(PV/T-CPCM).An open-air environment is used to analyze the effects of different parameters and the intermittent operation strategy on the system performance.The results indicate that the short-circuit current and open-circuit voltage are positively correlated with the solar irradiance,but the open-circuit voltage is negatively correlated with the temperature of the PV modules.When the solar irradiance is 500 W⋅m^(−2) and the temperature of the PV modules is 27.5℃,the short-circuit current and open-circuit voltage are 1.0 A and 44.5 V,respectively.Higher solar irradiance results in higher thermal power,whereas the thermal efficiency is under lower solar irradiance(136.2-167.1 W⋅m^(−2) is twice under higher solar irradiance(272.3-455.7 W⋅m^(−2))).In addition,a higher mass flow rate corresponds to a better cooling effect and greater pump energy consumption.When the mass flow rate increases from 0.01 to 0.02 kg⋅s^(-1),the temperature difference between the inlet and outlet decreases by 1.8℃,and the primary energy-saving efficiency decreases by 0.53%.The intermittent operation of a water pump can reduce the energy consumption of the system,and the combination of liquid cooling with PCMs provides better thermal regulation and energy-saving effects under various conditions.

关 键 词：Compound parabolic concentrator Factor analysis Open-air experiment Phase-change materials Photovoltaic/thermal system 

分 类 号：TM615[电气工程—电力系统及自动化]