Kaeser CSG-2 series rotary screw compressors

Kaeser Compressors has launched two new 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.

An integrated design, together with a generously dimensioned aluminium block heat exchanger, helps to ensure a minimal pressure loss of less than 0.1 bar. In addition, the energy-saving scroll refrigeration compressor helps to achieve further compressed air energy savings.

Where pressure dewpoints below +3°C are required, the CSG-2 RD series dry compression rotary screw compressors with integrated i.HOC rotation dryer are available. The i.HOC rotation dryer can achieve pressure dewpoints as low as -30°C. 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. As a result, the user obtains a reliable air dryer with maximum efficiency and lower energy costs.

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