Kaeser ESD series compressors

The latest generation of ESD series rotary screw compressors from Kaeser are said to consume up to 8% less energy than previous models, yet deliver 6.5% higher flow rates. Numerous optimisation measures, such as improved Sigma Profile screw compressor blocks and the use of IE4 motors, have further improved the overall energy profile.

The high performance of compressors is due to a flow-optimised rotary screw compressor block with energy-saving Sigma Profile rotors, while the use of IE4 Super Premium Efficiency motors exceeds current requirements for the use of IE3 class motors. The Electronic Thermal Management system delivers additional energy advantages, as do the environmentally friendly fluid filter and integrated Sigma Control 2 controller.

Electronic Thermal Management consistently controls the oil temperature within a constant, safe differential relative to the dewpoint, which also helps avoid unnecessarily high screw compressor block discharge temperatures, thereby contributing to higher overall energy savings and extended service life. With optional heat recovery equipment, a second Electronic Thermal Management system ensures optimum use of the heat energy that arises from the compression process.

The fluid filter elements simply sit in an aluminium housing, with no need for a sheet metal enclosure. The filter elements themselves are completely free of metal, making disposal straightforward: at the end of their service life, they can be thermally disposed of without additional pretreatment.