Experimental study on refrigeration and power cogenerationperformance of air-cooled PV/T air conditioning system in daytime

This paper presents a kind of air-cooled photovoltaic/thermal (PV/T) air conditioning system. The system refrigeration and power cogeneration performance is tested in summer daytime, and the influences of environmental factors and operating parameters on the power generation and refrigeration performances of the system are analysed. The results show that the temperature of the photovoltaic panel increases with the increase of the solar irradiance, and the output electric power of the photovoltaic panel decreases with the increase of the temperature. The solar irradiance, outdoor temperature and outdoor wind speed all affect the system refrigeration performance, and the outdoor temperature has the greatest influence on the refrigerating capacity and the coefficient of performance (COP). When the outdoor temperature increases from 23.6 ℃ to 32.8 ℃, the refrigerating capacity increases by 1.6 times and COP decreases by 38.8%. The air-cooled PV/T air conditioning system has a certain refrigeration and power cogeneration performance in summer daytime, which can be further optimized to expand its service time and application range.