Experimental Study on Heat Transfer Enhancement of Air-Conditioning System of New Energy Vehicle

Abstract

Air conditioning system is the second largest energy consuming component in new energy vehicles. Enhancing heat transfer in an air conditioning system can reduce heat loss, the energy consumption of cars and increase the mileage of new energy vehicles. The state parameters and system energy efficiency of pure R134a refrigerant and 1% Fe3O4-R134a nano-refrigerant under different working conditions were studied on a new energy vehicle air conditioning system. The results show that in the air conditioning system of new energy vehicle, the application of 1% Fe3O4-R134a nanometer refrigerant in the air conditioning system of new energy vehicle can operate safely and normally. After the addition of 1% Fe3O4 nanoparticles, the temperature difference of the inlet and outlet fluid of each part of the air-conditioning system is increased, and the heat exchange rate and the performance coefficient COP are increased. It shows that the application of nanometer refrigerant can effectively enhance the heat transfer of new energy automobile air conditioning system. This paper provides primary data for the implementation of nanometer refrigerant in the use of new energy automobile air conditioning system.