Refrigeration Air Dryer (Water Cooling)

DSW-D Series

Industries: Sewage Treatment Textile   Food & Beverage Medical Transportation Petrochemical Industry Packaging Paper & Printing Pharmaceutical Power Industry Wood Processing Electronics

Description

Refrigeration Air Dryer is a widely applicable compressed air dewatering equipment at present. Using refrigeration technology, the compressed air's temperature entering the dryer with saturated moisture content suddenly reduced, forcing most of the water vapour (and part of the oil vapour) to condense into liquid water (oil). After separating from the air, the compressed air is returned to a higher temperature to reduce its relative humidity before being transported to the downstream air equipment.

In a compressed air refrigerated dryer, since the compressed air always saturated in the evaporator, the condensed water will continuously precipitation during the circulation process. Its dew point will also drop - the limit is the freezing point of water. Due to the frozen point limit, the freeze-drying system's evaporation temperature cannot set too low as that of the refrigerator, limiting the further decline of the dew point of the compressed air. Therefore, the dryness degree (moisture content) of the compressed air treated by the Refrigeration Air Dryer is limited. Under normal circumstances, no matter how much pressure the compressed air has, the dew point under its working pressure (referred to as "pressure dew point") is above zero, generally 2-10℃ as a sign of its purification efficiency.

Working Principle of Water-Cooling Refrigeration Air Dryer:

The compressed air temperature determines the amount of water vapour in the compressed air. While keeping the compressed air pressure unchanged, lowering the compressed air temperature will reduce water vapour content in the compressed air. In contrast, the excess water vapour will condense into a liquid. According to the corresponding relationship between saturated steam pressure and water temperature, the refrigerating device used to cool the compressed air to a specific dew point temperature, precipitation of the water contained, water separator, and electric drainer water as to dry the compressed air.

Features of Water-Cooling Refrigeration Air Dryer:

1. Use industrial circulating water as the cooling medium of the refrigeration system, suitable for use in a high-temperature environment.

2. Countercurrent design is adopted for heat exchanger, with high heat exchange efficiency and small volume.

3. the air-water separator adopts three-stage separation mode: direct collision separation + low-speed centrifugal separation + stainless steel wire mesh demister separator, from the cooled compressed air to separate 99.9% of the liquid water, prevent the secondary evaporation of water, to ensure the low dew point quality of the finished air product.

4. Stable operation, low noise, high COP, reliable performance, power-saving and long service life of refrigeration compressor.

5. the unique model can be controlled by PLC, operation parameters can be real-time display, remote control.