Refrigerated Air Dryers - Q & A
Q. How to choose the correct type of refrigerated air dryer.
1. NON CYCLING
Unit runs continuously. Temperature regulated by metering the refrigerant gas.
Best Application: Use when the air usage is continuous.
Low Initial Cost----Low Maintenance Cost----High Energy Cost.
2. CYCLING
Unit turns on / off. Temperature is regulated by on / off operation. Has built in heat sink.
Best Application: Use when the air usage is intermittent.
High Initial Cost----Low Maintenance Cost----Low Energy Cost.
3. HIGH INLET TEMPERATURE
Unit runs continuously. Has built in aftercooler to pre-cool inlet air.
Best Application: Use when the air compressor does not have an aftercooler .
Medium Initial Cost----Low Maintenance Cost----High Energy Cost.
NOTE: Aftercoolers precool the compressed air before entering the dryer.
non cycling & cycling dryers need system with aftercooler.
NOTE: ALWAYS LOOK AT CAPACITY CORRECTION FACTORS IN DRYER BROCHURE TO PROPERLY SIZE DRYER.