Oil-free compression rotary screw compressors with integrated compressed air dryer

The patented i.HOC rotary dryer from Kaeser uses up to 100 % of compressor heat! Thanks to full-flow regeneration, it delivers reliable pressure dew points up to an ambient temperature of 45 °C – completely without electrical heating or additional cooling of the regeneration air!

• Installed in air-cooled or water-cooled units
• Unit rated power from 37 kW to 355 kW
• Unit flow rates from 4.2 m³/min to 51 m³/min
• Integrated SIGMA CONTROL 2 compressor controller (SFC model versions)

Your advantages

• Sub-zero pressure dew points even in high ambient temperatures:
  Thanks to its extraordinary regeneration potential, the i.HOC delivers below-zero pressure dew points even with high cooling medium temperatures.
• Pressure dew point stability even with variable flow rates:
  The pressure dew point remains stable even with low compressor load – no partial-load compensation required.
• Effective drying AND heat recovery:
  i.HOC uses the heat exchangers of the second compression stage, which have been optimised for heat recovery, as regeneration air coolers.

The i.HOC (Integrated Heat of Compression Dryer) uses 100 % of the heat of compression from the second compressor stage for drying purposes (full-flow regeneration). This heat, which is produced in any case, is therefore effectively available at zero cost.

• No additional energy input for the drying process
• Higher regeneration potential than dryers with partial-flow regeneration
• Full performance, even at low compressor load

The advantages of full-flow regeneration become particularly evident at increased cooling medium temperatures. KAESER rotation dryers achieve outstanding drying results, even without additional electrical heating of the regeneration air.