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Compressed Air technology

Aftercoolers

Hot air in, cool air out, water condensed.

Schematic section, not to scale

How it works

Aftercoolers cool the hot air leaving a compressor so most of its water vapour condenses before the dryer, protecting the dryer and the pipework.

Air passes through a finned or tube-and-shell heat exchanger cooled by ambient air (fan) or water; the condensed water is separated and drained.

Performance range

Rated by air flow at a stated inlet temperature and pressure

Typical industry range. Exact capability is model specific, see each model’s curve.

In the catalogue · 27 models from 1 manufacturers

Rated capacity
66 – 11,000 m³/h · 27 models

Spread of each model’s own rated figure, as published by its manufacturer.

Advantages & tradeoffs

  • Removes most water before the dryer
  • Lowers dryer load
  • Simple, few moving parts
  • Needs a drain
  • Air-cooled units depend on ambient temperature
  • Water-cooled units need cooling water

Best applications

Compressors without an integral aftercoolerHot climatesAhead of refrigerated dryers

Maintenance

Clean fins or tubes, check fans and drains.

Energy characteristics

Specific-energy comparisons (kW per unit of flow at your operating point) appear here as sourced performance curves are added. Until then, compare models directly on the Performance Map.

Open the Performance Map

Manufacturers