Kaeser Compressors CSG-2 T and CSG-2 RD oil-free rotary screw compressors

Kaeser Compressors has launched two additional versions of its CSG-2 series dry compression rotary screw compressors: the CSG-2 T with integrated refrigeration dryer and the CSG-2 RD with integrated i.HOC rotation dryer. The compressed air systems can produce clean and high-quality compressed air with pressure dewpoints as low as -30°C.

Suitable for the food and pharmaceutical industries or for high-grade industrial air, the two-stage oil-free compression rotary screw compressors can perform efficiently even in extreme conditions.

An integrated design, together with a generously dimensioned aluminium block heat exchanger, helps to ensure a minimal pressure loss in the CSG-2 T of less than 0.1 bar. In addition, the energy-saving scroll refrigeration compressor helps to achieve further compressed air energy savings. All refrigeration dryer components in the model are easily accessible via the service door on the front of the unit for ease of maintenance and service work.

Where pressure dewpoints below +3°C are required, the CSG-2 RD with an integrated i.HOC rotation dryer is a suitable solution. The hot compressed air from the second compression stage is used to regenerate the desiccant. This heat is essentially available for free, as no additional energy is required to power the drying process.

The i.HOC rotary dryer’s intelligent control ensures dewpoint stability even with fluctuating flow rates and at compressor partial load. When commissioned, the target pressure dewpoint is reached after just one rotation of the drum.

Both the air- and water-cooled CSG packages are available with the integrated i.HOC rotary dryer or integrated refrigeration dryer. Drive powers range from 37 to 90 kW and operating pressures from 4 to 10 bar, with flow rate up to 13.5 m³/min.