Refrigerated Air Dryer

Refrigerated Air Dryer

Refrigeration dryers are the most commonly used dryers in industry and consist of an air-to-air heat exchanger and an air-to-cooler heat exchanger. Heat exchangers remove moisture from compressed air by condensing the water inside. This is necessary to protect compressed air systems and all compressed air equipment from the harmful effects of moisture.

The most important criterion is to keep the relative humidity of the compressed air below 50%.

Both air-cooled and water-cooled refrigerated dryers are available. Essentially, dehumidifiers cool the warm, moist air coming from the compressor. As the compressed air temperature drops, moisture is condensed and removed from the compressed air by a high efficiency water separator.

The compressed air is then warmed to ambient temperature to prevent condensation from forming on the outside of the piping system. This heat exchange between the incoming and outgoing compressed air also lowers the temperature of the incoming compressed air, thereby reducing the required cooling capacity of the refrigeration circuit.

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