A new coating material which is graphene composite coatings is proposed for air source heat pump-radiator system.Limited by the outlet water temperature of air source heat pump water heater

it is necessary to improve the heat dissipation capacity of the radiator. The samples with 0%

2.5% and 5% graphene mass fraction were prepared and the radiator heat dissipation capacity before and after spraying was compared. The results show that the heat dissipation effect of the composite coating with 5% graphene is the best. The heat dissipation of the composite coating is about 13 times of pure epoxy resin when the water supply temperature is 50 ℃. With the increase of the water supply temperature

the heat dissipation of the sample increases

but the increasing range decreases gradually.