Expermental Study Of The Sloar Photovoltaic-Thermal Hybrid And Heat Pump Coupled Systems

Photovoltaics(PV) and heat pump(HP) are very important techniques for energy conservation and carbon reduction. The solar photovoltaic technology has been developing rapidly, which refers to a technology that integrates a PV module and a solar thermal collector into one unit. On the one hand, solar energy can be converted into electric energy and heat energy, the efficiency of the solar power be improved greatly. On the other hand, the temperature of the solar cells decrease, the efficiency of solar cells increase and the life span of the solar cell increased.Temperature of the hot water produced by solar photovoltaic-thermal hybrid(PV-T) system usually can not reach the required hot water temperature of daily life,working with heat pump, the PV-T system can provide hot water with higher temperature,the practicability and the heating reliability of this system will be improved significantly. The main works of this paper are summarized as follows:(1) The coupled system of joint work with PV-T and heat pump is studied and proposed, the solar energy can be converted into electric energy and heat energy by the PV-T system. The coupled system uses the heat energy applied by PV-T as the evaporating heat source.(2)Experimental device of the sloar photovoltaic-thermal hybrid and heat pump system was established. The performance of solar cells were tested and compared, the photoelectric efficiency and thermal efficiency of the PV-T system was tested, and the efficiency of heat pump were tested.(3) The theory model of the sloar photovoltaic-thermal hybrid and heat pump coupled systems was established. Through experimental research and thermodynamic analysis about the system performance, the matching relations of the solar cell area with heat pump parameters were be analysised.Energy saving suggestions of the systems are put forward.