Refrigeration equipment cooling method

There are two types of cooling methods: direct cooling and indirect cooling. Direct cooling is to install the evaporator of the refrigerator in the box or building of the refrigeration device, use the evaporation of the refrigerant to directly cool the air in it, and cool the objects to be cooled by the cold air. The advantages of this cooling method are that the cooling speed is fast, the heat transfer temperature difference is small, and the system is relatively simple, so it is widely used. Indirect cooling relies on the evaporation of the refrigerant in the evaporator of the refrigerator, thereby cooling the carrier refrigerant (such as brine), and then feeding the carrier refrigerant into the box or building of the refrigeration device, and cooling the air in it through a heat exchanger. This cooling method has a slow cooling speed, a large total heat transfer temperature difference, and a more complex system, so it is only used in less occasions, such as brine ice making and cold storage with constant temperature requirements, etc.