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Air Dryers
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HEATLESS

Flow Rate: 5   -   6700 SCFM
Inlet Pressure: 60   -   600 PSIG
Inlet Temperature: 60   -   120 °F
Dewpoint: -40   -   100 °F
Characteristics:
  • Regenerative desiccant dryer.
  • Stable constant dewpoint.
  • 10-minute NEMA cycle.
  • Low maintenance.
  • Ease of operation.
  • Heaters or high voltage not required.
  • Lowest first cost (of regenerative dryers).
  • Relatively high energy costs due to 15% purge rate.
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EXTERNAL CONVECTION HEATED
REGENERATIVE

Flow Rate: 35   -   6700 SCFM
Inlet Pressure: 60   -   600 PSIG
Inlet Temperature: 60   -   120 °F
Dewpoint: -40 °F
Characteristics:
  • Regenerative desiccant dryer.
  • External convection heater.
  • Low maintenance.
  • 8-hour NEMA cycle.
  • Low purge air loss: 7 to 13%.
  • Lower energy costs with dewpoint controller.
  • Higher first cost than heatless.
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ATMOSPHERIC BLOWER

Flow Rate: 35   -   6700 SCFM
Inlet Pressure: 60   -   600 PSIG
Inlet Temperature: 60   -   120 °F
Dewpoint: 0 to -40 °F
Characteristics:
  • Regenerative desiccant dryer.
  • Dry purge air not required.
  • 8-hour NEMA cycle.
  • External convection heater.
  • Blower supplies atmospheric purge air to heater.
  • Dewpoint varies with ambient air temperature & relative humidity.
  • Lowest operating costs.
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HEAT-OF-COMPRESSION

Flow Rate: 490   -   6700 SCFM
Inlet Pressure: 60   -   600 PSIG
Inlet Temperature: 300   -   400 °F
Dewpoint: 0 to -40 °F
Characteristics:
  • Regenerative desiccant dryer.
  • Heat for regeneration supplied by compressor.
  • Lowest operating costs of all regenerative dryers.
  • No purge air loss.
  • Moderate maintenance.
  • Highest first cost.
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DELIQUESCENT

Flow Rate: 10   -   10,000 SCFM
Inlet Pressure: 60   -   600 PSIG
Inlet Temperature: 35   -   120 °F
Dewpoint: 15   -   25 °F below inlet temp.
Characteristics:
  • Non-regenerating.
  • Utilities not required.
  • No moving parts.
  • Lowest first cost.
  • Requires additional desiccant on regular basis.
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