Experimental study on cooling system for new energy engineering vehicles

In order to study in depth the changing patterns of cooling performance of the cooling system for new energy engineering vehicles, a test bed integrating the air conditioning system and the coolant circuit was established. Subsequent tests were carried out through refrigerant charging experiments and under variable operating conditions for a discussion of the results. The research results show that the system performance is better when the COP is 3.65 and the cooling capacity is 808.66 W, and the optimal refrigerant charge is determined at 420 g. The electronic valve has a regulating effect and there exists an optimal opening to maximize the COP value.