Refrigerated Compressed Air Dryer Design

With over 20 years' experience, HighQ Compressor is specialized in manufacturing and marketing refrigerated compressed air dryer design, which is of high efficiency, low energy consumption and long lifespan. As one of the professional manufacturers and suppliers in China, we warmly welcome you to buy quality equipment made in China from our factory.

 

Refrigerated compressed air dryer design

1. Air/Tak Direct Expansion Refrigerated Air Dryers are designed to remove moisture from compressed air by transferring heat from the air to the refrigerant. Direct expansion is the most efficient form of heat transfer technology used in dehumidifying compressed air. Compressed air comes in direct contact with the refrigerant circuit and therefore offers the most efficient method for drying air.

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3. Refrigerated air dryers provide dew points of 38°F for many indoor compressed air applications. Incoming air enters an air-to-refrigerant heat exchanger where the air is cooled to 38º F by the liquid refrigerant. This process causes the moisture to condense into liquid water and it is drained away. The outgoing air then enters the air-to-air heat exchanger and is warmed up to prevent pipe condensation. 

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5. Although it does not offer as low a dew point as can be obtained with other types, the refrigerant type dryer has been the most popular, as the dew point obtained is acceptable in many general industrial plant air applications. The principle of operation is similar to a domestic refrigerator or home air conditioning system. The compressed air is cooled in an air-to-refrigerant heat exchanger to about 35°F, at which point the condensed moisture is separated and drained off. The air is then reheated in an air-to-air heat exchanger by means of the incoming air, which also is pre-cooled before entering the air-to-refrigerant heat exchanger. This means that the compressed air leaving the dryer has a pressure dew point of 35 to 40°F. A lower dew point is not feasible in this type of dryer as the condensate would freeze at 32°F or lower.

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