Numerical Simulation of Nanofluid-Based Parallel Cooling Photovoltaic Thermal Collectors  

作　　者：WANG Jiangjiang QIN Yanbo HUO Shuojie XIE Kangzhen LI Yiming 

机构地区：[1]Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology,North China Electric Power University,Baoding,071003,China

出　　处：《Journal of Thermal Science》2023年第4期1644-1656,共13页热科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No.52276007)

摘　　要：A novel hybrid cogeneration system based on a parallel-cooled photovoltaic/thermal(PV/T)module is presented in this paper.The temperature of the parallel-cooled PV/T module is more uniform due to the parallel cooling fluid of air mixed with water or nanofluids(SiO2,CuO,Ag,and Al_(2)O_(3)).The results show that the overall temperature of the PV cell in the parallel-cooled module is about 2 K lower than that in the single-cooled module,with a 9.01%improvement in thermal efficiency and a 0.09%enhancement in electrical efficiency.The PV/T module with nanofluid shows a significant improvement in thermal and electrical efficiency.The thermal and electrical efficiencies of the parallel-cooled PV/T module consisting of Al_(2)O_(3)nanofluid and air are 89.21%and 9.84%,respectively.Compared with the non-nanofluid parallel cooling scheme,the cooling method consisting of 1 wt%,3 wt%,or 5 wt%Al_(2)O_(3)and air,the thermal efficiency of PV/T was improved by 5.47%,5.30%,and 3.93%,respectively with the solar radiation of 800 W/m^(2)and the flow rate of 0.10 m/s,while the electrical efficiency was improved by 0.026%,0.027%,and 0.034%,respectively.In addition,when the solar radiation is 1000 W/m^(2)with a flow rate of 0.025 m/s,the air-water parallel cooling PV/T module achieves a maximum exergy efficiency of 11.74%.

关 键 词：PV/T parallel cooling exergy efficiency NANOFLUID numerical simulation 

分 类 号：TK513.1[动力工程及工程热物理—热能工程] TM615[电气工程—电力系统及自动化]