Kaesar FSG series rotary screw compressor with integrated i.HOC rotary dryer

Kaeser has launched the FSG series of its dry-running rotary screw compressor with integrated heat of compression (i.HOC) rotary dryer. It provides an oil-free compressed air solution for sensitive applications that require flow rates up to 50.20 m³/min and efficient compressed air drying.

The integrated rotary dryer for screw compressors provides a steady supply of oil-free compressed air, with pressure dewpoints of up to -30°C. With its i.HOC, the desiccant dryer uses 100% of the available hot compressed air from the second compression stage to directly regenerate its desiccant.

For particularly sensitive compressed air applications, Kaeser has an optional pressure dewpoint regulation system. If cooling conditions deteriorate, the dewpoint regulation system registers the resulting pressure dewpoint increase and boosts the dryer’s regeneration potential accordingly.

In addition to the i.HOC, the water-cooled FSG features an efficient integrated heat recovery system, which helps to use the available compression heat twice: once in the i.HOC to dry the compressed air and again via the integrated heat recovery to heat process or hot water up to 90°C. An automatic, fail-safe cooling system protects the compressor — and thus the compressed air supply — from excessively high water temperatures.