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For operating the Refrigerated Air dryer required to remove moisture by cooling air nearby temperature. The only process is removing heat is known for producing cold. Heat is always attracted by the cold body. This is the basis for the function of a cooling unit. As long as the temperature of the cold body is lower than the hot source, there will be heat transfer.
The air entering the system enters into the pre-cooler. A pre-cooler is a heat exchanger where the incoming hot air is being cooled by the outgoing cold air so as to reduce the heat loads for the evaporator and thereby the refrigeration system. The air enters into the evaporator from the pre-cooler. In evaporator the cooling, after steaming refrigerant is heat is removed. The air with condensate enter into moisture separator device, and its moisture is get pulled out by centrifugal force. The air free from moisture enters the Pre-cooler to cool the incoming air and thereby some heat is added.
The refrigerant circuit consists of a Compressor, a Condenser, a Filter Dryer, an Expansion Valve or a Capillary Tube and an Evaporator.
Refrigerant dryers are the most prevalent kind of dryers and include an air to air heat exchanger and an air to refrigerator heat exchanger. The heat exchangers take off moisture from your compressed air system through the use of water condensation within. This is necessary for the preservation of the compressed air systems and any equipment that is supplied with compressed air from being negatively impacted by moisture.
The most important of them is to maintain corrosion grade of compressed air, and not allow the relative humidity of air to exceed 50%.