Publication date: 7th February 2022
The major problem with PV modules is that even though they have reached power conversion efficiency up to 22% by utilizing mostly the visible and near-infrared region of solar spectra but most of the infrared radiation is lost in the form of heat and is not harvested. Moreover, the infrared radiation that is incident results in heating of the panels and therefore leads to reduction of operational efficiency of solar cells. The purpose of this study is to optimize of cooling Solution for a hybrid photovoltaic thermal system. hybrid systems of PV with PCM (Phase change material) at different PCM such as RT28, RT35, RT45, and RT55 under various PCM thicknesses. We also studied the effect of PV tilt angle, PCM thermal conductivity, and daytime on hybrid systems. Effect of PCM internal conduction and convection considered due to that PCM fluid can moves with maximum velocity of 6.21mm/s. PV with 30mm of RT45 PCM shows optimal temperature drop of PV-PCM system. The hybrid system of PV-RT45 can reduce the maximum temperature of PV by 11.2 ℃ and the average temperature of PV by 6.2℃. While the maximum and average temperature of PV is 63.4 ℃ and 52.4 ℃ respectively under typical hot summer day in India. In case of winter season RT28 with 30mm shows optimal temperature drop by 8 ℃ with respect to PV. To reduce the further temperature of PV, fluid channels can be used with PCM. due to additional fluid channel cooling, the overall temperature of PV reduces also required lower melting PCM RT35 of 30mm thickness will shows optimal temperature drop of PV cell.
Authors thank the financial support from Science and Engineering Research Board (SERB), India through Grant No. SRG/2020/001771 and UKRI Global Challenge Research Fund through project SUNRISE (EP/P032591/1).
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