Refrigerated Dryers
Refrigerated dryers are the most common type of air dryer. By using a refrigerant to cool the compressed air in heat exchangers, they condense water vapor to a liquid for separation and removal from the air through a moisture separator and an automatic drain. A pressure dew point of +35°F. and up are available.
Most indoor applications use refrigerated dryers for their low initial cost and minimal maintenance. Controls range from basic gauge packages to microprocessor-based systems with RS232 outputs.
Non-cycling
Non-cycling refrigerated compressed air dryers will deliver a stable ISO 8573.1 quality class 4 and class 5 pressure dew point. This type of dryer is usually the most economical to purchase and requires little maintenance.
Cycling
Cycling refrigerated air dryers are engineered for dew point performance and energy efficiency. Cycling dryers will typically provide a 33˚ F - 39˚F dew point under all rated flow conditions and have lower operating costs as they store and circulate cooling energy which allows the dryer’s refrigeration compressor to cycle off and match energy costs to actual plant air demands. The cold energy storage system also reduces compressor run time to gain long component life.
High Inlet Air Temperature
High inlet air temperature dryers can accept inlet temperatures to 180º F. This dryer will replace an after cooler, separator and filter to save on equipment and installation costs.