علي غلام ولوجردي

The efficiency of conventional photovoltaic panels decreases due to the increase in panel temperature. By placing pipes under common photovoltaic panels, in addition to cooling and increasing their efficiency, the heat produced in heating systems can be used. In this thesis, first of all, the methods of manufacturing thermal photovoltaic panels and the investigation of different flow patterns under the solar panel are discussed. Then, the steps of making a sample of a prefabricated thermal photovoltaic panel are mentioned. The sample is experimentally eva‎luated at the Oil Industry Research Institute in Tehran and the results of five experimental tests including the eva‎luation of thermal performance, effective heat capacity, time constant, radiation angle correction factor and pressure drop are presented. The results show that the maximum thermal efficiency of this collector is 32.34% based on gross surface and under ideal temperature conditions. Also, the effective heat capacity is equal to 4200 joules/kilogram and its time constant is 85 seconds. In addition, for the radiation angle of 20 degrees, the radiation angle correction factor is 0.96 and the pressure drop of the tested collector is about 250 pascal in its working mass flow rate.

پنلهاي فتوولتائيك حرارتي، خنك‌سازي، بازده، آزمون تجربي

Thermal photovoltaic panels, cooling, efficiency, experimental test

ali gholam valoujerdi

Mohammad Hassan Shojaeefard