We manufacture a wide range of Refrigerated Type Air Dryer The Basic principle is the removal of moisture by cooling air to a certain present temperature.
The concept of efficient cooling is the removal of heat only. The air first enters into the pre-cooler where the incoming hot air is being cooled by outgoing cold air so as to reduce the heat load of the evaporator. The air from pre-cooler enters into the evaporator where further heat is removed by boiling refrigerant like Freon.
Now the air gets condensed and this moist air is passed through a moisture separator where moisture is drained out by the centrifugal action of air. The moist free air enters into pre-cooler to cool the incoming air.