Fotovoltaik termal (FV/T) kollektörlü güneş enerjili bir ısı pompası sisteminin deneysel olarak araştırılması

The global energy crisis and environmental pollution caused by the consumption of fossil fuels make it necessary to seek alternative energy resources and develop energy-efficient systems. Solar energy is one of the renewable alternative energy resources which is environment-friendly, limitless, economical, and attainable. Systems using solar energy as a heat resource of heat pumps are more efficient. There are three methods for coupling heat pumps with solar collectors: solar thermal assisted heat pumps, photovoltaic powered heat pumps, and photovoltaic/thermal (PV/T) assisted heat pumps. Compared to the former two methods, the combination of PV/T collectors with heat pump is particularly promising since PV/T collectors combine photovoltaic panels and a solar thermal collector into a single integrated collector, and are capable of producing both electrical and thermal energy simultaneously. By using this combination, the heat pump performance and the PV/T efficiency can be improved due to the increase in the evaporating temperature of the heat pump and the decrease in the PV/T panel operating temperature. In addition, the electrical energy generated by the solar collector can be used to drive the compressors and pumps. PV/T assisted solar heat pump systems can be classified according to the typical working fluid in the PV/T collector as: liquid-cooled collector, air-cooled collector, and refrigerant- cooled collector. In this study, a liquid-cooled PV/T assisted heat pump for space heating is experimentally investigated. Based on the results, the effects of the key parameters for each of the PV/T system control methods on the PV/T system energy gain, overall energy consumption, average heat pump coefficient of performance (COP), and the overall system performance were presented. Keywords: PV/T assisted solar heat pump, PV/T solar collector, Performance, Control method.