Refrigeration Principle Of Finned Evaporator

The liquid refrigerant in the evaporator absorbs heat from the object being cooled, and evaporates into low-temperature and low-pressure steam. The compressor compresses it into high-temperature and high-pressure steam and enters the condenser. The cooling medium (water or air) of the condenser releases heat and condenses the high-pressure liquid. The throttle valve of the low-temperature and low-pressure refrigerant throttles the flow, and enters the evaporator again to evaporate heat to achieve the purpose of circulating refrigeration. In this way, the refrigerant can complete the refrigeration cycle through four basic processes: evaporation, compression, condensation, and throttling.

In the refrigeration system, the evaporator, condenser, compressor and throttle valve are the four basic components of the refrigeration system. The refrigerant absorbs heat from the cooling body to achieve cooling. The compressor is the heart, it sucks, compresses and transports refrigerant vapor. The condenser is a device that releases heat, which is transferred to the cooling medium through the heat of the evaporator and the heat of the compressor. The throttle valve is used to control and adjust the amount of refrigerant liquid entering the evaporator, and the system is divided into two parts, the high-pressure side and the low-pressure side.