Abstract
A theoretical analysis of novel PV/T solar collector is presented in this paper. The collector is made of vacuum tube-PV sandwich and the heat extraction from PV panel by the water passing through u-shape cooper tube of the collector results in the reduction of the PV cells’ working temperature. This also improves the electrical and thermal efficiencies of the PV cells. Based on energy balance of each parts of the vacuum-tube-PV sandwich, mathematical models are developed to evaluate the energy performance of the PV collector and analyze its affecting factors. The simulation results indicate that the thermal efficiency increases slightly while the electrical efficiency decreases slightly with the increasing radiation. Both the thermal and electrical efficiencies increase by 1.4% and 0.23% respectively with every 10 kg/h increase in water mass flow, and decrease by 3.8% and 0.6% respectively with every 10 °C increase in inlet water temperature.
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