Experimental Studies on Water based Photovoltaic Thermal Collector (PVT)

摘要

The main reason of combining the photovoltaic/thermal collector systems (PV/T) is to increase the efficiency of the photovoltaic. It is known fact that the efficiency of the photovoltaic panel decreases when the ambient temperature increased. The photovoltaic panel absorbed sunlight from the sun and convert it to electricity. Beside sunlight, it also absorbed heat and this phenominon leads to the decrease of photovoltaic efficiency. An experiement study of a photovoltaic thermal collector involving a specially designed absorber collector known as Spiral flow absorber collector has been for heat transfer enhancement. The results of performance efficiency of the photovoltaic, thermal and also the combination of both, PV/T over range of operating conditions are discussed and analyzed. Results at solar irradiance of 1321 W/m~2 show that the combined PV/T efficiency of 65 %, electrical efficiency of 12% at mass flow rates of 0.041 kg/s.