Refrigeration Compressor
The refrigeration compressor serves as the heart of the refrigeration system; the compressed refrigerant is ultimately discharged through the exhaust pipe.
Condenser
The function of the condenser is to cool the high-pressure, superheated refrigerant vapor discharged by the compressor, converting it into liquid refrigerant; the heat is dissipated by cooling water or cooling air. This ensures that the refrigeration process proceeds continuously.
Evaporator
The evaporator is the primary heat exchange component of a refrigerated air dryer. Inside the evaporator, compressed air undergoes forced cooling; the majority of the water vapor contained within the air cools and condenses into liquid water, which is then discharged from the unit, thereby drying the compressed air. Within the evaporator, the low-pressure liquid refrigerant undergoes a phase transition, transforming into low-pressure refrigerant vapor; during this phase change, it absorbs heat from its surroundings, thereby lowering the temperature of the compressed air.
Expansion Valve
The thermal expansion valve (or capillary tube) acts as the throttling mechanism within the refrigeration system. In a refrigerated air dryer, the supply and regulation of refrigerant to the evaporator are controlled by this throttling mechanism. The throttling mechanism facilitates the entry of the refrigerant-transitioning from a high-temperature, high-pressure liquid state-into the evaporator.