Kaeser FSG series compressors with i.HOC rotary dryer

Kaeser has announced the FSG series of its dry running rotary screw compressors featuring an integrated i.HOC rotary dryer.

The i.HOC integrated rotary dryer for screw compressors provides a steady supply of oil-free compressed air with pressure dewpoints of up to -30°C, even under unfavourable conditions.

The dryer utilises 100% of the available hot compressed air from the second compression stage to directly regenerate its desiccant. The advantages of this full-flow regeneration make the i.HOC particularly efficient and ensure stable pressure dewpoints, even in harsh conditions such as low final discharge pressure, high ambient temperatures or reduced utilisation.

For particularly sensitive compressed air applications, Kaeser offers optional pressure dewpoint regulation for all FSG series, oil-free rotary screw compressors with an integrated i.HOC. Should the cooling conditions deteriorate, perhaps due to rising ambient temperatures, the dewpoint regulation registers the resulting pressure dewpoint increase and boosts the dryer’s regeneration potential accordingly. This ensures that the pressure dewpoint is optimised. This offsets the daily and seasonal fluctuations in the cooling air temperature, thereby achieving constant pressure dewpoints.

The standard FSG series of dry running rotary screw compressors with integrated i.HOC dryer models are available with drive powers of 160 to 355 kW and produce flow rates from 29.30–50.20 m³/min, designed for pressures 4 to 10 bar.