Divided into two types: air-cooled chiller and water-cooled chiller: A. The air-cooled chiller is mainly used to dissipate heat from the aluminum foil finned condenser. The condenser usually uses the axial flow blowing method. The device is simple, just connect the ice water inlet and outlet, it is suitable for areas with inconvenient water or lack of water resources; B. The water-cooled chiller is mainly used to dissipate the shell-and-tube condenser through water, and needs to be cooled. Compared with the air-cooled chiller, the water-cooled chiller does not need a fan, and the energy consumption is superior to that of the air-cooled chiller, and it is cooled by water, and the heat exchange efficiency is higher than that of the air-cooled chiller. Under the type of equality, the cooling capacity of water-cooled chillers is slightly higher than that of air-cooled chillers.