An after-cooler is an auxiliary system designed to enhance dehumidifying performances by lowering load on a refrigerated or desiccant dryer by cooling high-temperature compressed air and discharging condensate.

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aftercooler top

After-cooler

Why After-cooler?

The compressed air from air compressor is provided at temperature higher than ambient temperature by nearly 15℃ due to the heat produced during compression. Such hot and humid compressed air increases load on a refrigerated or desiccant air dryer, reducing dehumidifying performances by increasing load on dehumidifying systems such as a refrigerated/desiccant air dryer.

An after-cooler is an auxiliary system designed to enhance dehumidifying performances by lowering load on a refrigerated or desiccant dryer by cooling high-temperature compressed air and discharging condensate.

Cooling medium Ambient air
Heat exchanger Aluminum fin tube
Outlet temperature Ambient temperature + 10℃
Components
  • Ambient temperature + 10℃
  • Pressure Gauge (excluding Small Size)
  • Drain (Option)
Cooling medium Coolant
Heat exchanger Shell and tube heat exchanger
Outlet temperature Coolant temperature + 5℃
Components
  • Water-cooled after-cooler
  • Water separator (option)
  • Drain (option)

Water-cooled After-cooler

A water-cooled after-cooler is a system designed to cool high-temperature compressed air from an air compressor, using cooling water.
Condensate produced when hot compressed air is cooled is drained out through a water separator in the outlet of the water-cooled after-cooler.

HYA-W-dimension
  • A water separator is optional.
  • Water separator dimensions are subject to changes depending on specifications.
  • Design Conditions

    • Inlet Pressure : 7 barg
    • Inlet Temperature : 60 ℃(Max. 80 ℃)
    • Coolant Temperature : 32 ℃
    • Design Pressure : 9.7 barg
    Model Connection Flow Rate Coolant
    Connection
    Coolant
    Flow Rate
    Dimensions (mm) Weight
    A N㎥/min A ℓ/min A B kg
    H
    Y
    A
    100W FLG. 50A 18 FLG. 25A 55 1990 620 142
    200W FLG. 80A 30 FLG. 32A 105 2220 750 154
    300W FLG. 100A 36 FLG. 40A 155 2580 750 196
    400W FLG. 100A 42 FLG. 50A 210 2720 750 266
    500W FLG. 150A 60 FLG. 65A 270 3060 1000 303
    600W FLG. 150A 90 FLG. 80A 320 3220 1000 460

    Air-cooled After-cooler

    An air-cooled after-cooler is a system designed to cool high-temperature compressed air from an air compressor, using ambient air. Condensate produced when compressed air is cooled is discharged through a drain valve in the outlet.

    Technical Specification

    Features-of-air-cooled-aftercooler
    1. Easy bypass piping

      Easy bypass piping for maintenance with wide inlet-outlet spaces

    2. Convenient power connection

      A terminal block needed for power connection exposed, ensuring easy and convenient power connection

    3. Diverse drain

      Able to assemble various types of drains with a wide gap between the floor and drain outlet

    4. Great heat-exchange efficiency

      Ensures great heat-exchange efficiency through precise expansion, using corrugated aluminum fin and phosphorus-deoxidized copper tube

    Technical Specification

    Design Conditions

    • Inlet Pressure : 7 barg
    • 입구 온도: 60 ℃(Max. 80 ℃)
    • Ambient Temperature : 2~40 ℃
    • Design Pressure : 9.7 barg

    References

    • Large models bigger than those stated in the specifications above are also customizable.
    • The specifications are subject to changes without notice for productimprovement.
    • High-pressure or special-purpose models in addition to the proposed specifications are also customizable.
    • Models other than those stated in the electrical specifications above are also customizable.
    Model Connection Flow Rate Fan Size Power
    Consumption
    Power Supply Dimensions (mm) Weight
    A N㎥/min mm kW V / Ph / Hz A B C kg
    H
    Y
    A
    20AN PT 25A 5 230 X 1 0.03 220 / 1 / 50, 60 500 230 590 15
    25AN PT 25A 7 230 X 1 0.03 500 230 590 16
    40AN PT 25A 10 300 X 1 0.07 600 300 700 23
    50AN PT 40A 15 250 X 2 0.15 900 370 710 40
    80AN PT 50A 20 300 X 2 0.14 1,030 370 760 46
    100AN PT 50A 30 350 X 2 0.2 1,160 400 810 55
    150A PT 80A 50 450 X 2 0.4 380 / 3 / 50, 60
    440 / 3 / 50, 60
    1,690 460 1,095 180
    200A FLG. 100A 75 500 X 2 0.4 1,780 425 1,245 210
    300A FLG. 100A 100 550 X 2 0.8 1,880 480 1,360 230
    400A FLG. 125A 150 450 X 4 0.8 1,830 470 1,615 300
    500A FLG. 150A 200 500 X 4 0.8 1,975 475 1,685 350
    600A FLG. 150A 250 550 X 4 1.6 2,075 530 1,840 370
    Certification mark