New generation of rotary screw compressors

The new SIGMA airends and IE4 motors now combine to deliver up to 5% improved specific power compared to the company's previous models – which translates into significant energy cost savings. 

Sophisticated design and the proven 1:1 drive configuration combine to further enhance efficiency. The compressor airends have been redesigned and now feature a refined SIGMA profile design. This along with other improvements, such as a redesigned inlet valve and significantly reduced internal pressure losses, helps to deliver improved specific power.

New Super Premium Efficiency IE4 motors help to achieve this improvement and therefore enable peripheral losses in compressed air production to be reduced even further. Moreover, the electronic Thermo Management system controls oil temperature to ensure a safe and consistent differential from the dewpoint temperature. This strategy also prevents unnecessarily high airend discharge temperatures and provides additional energy savings. With the heat recovery option, a second electronic Thermo Management system ensures optimised and even more efficient use of the available heat energy – up to 96% usable for heat.

The service friendly design and unit interior also reflects HPC KAESER’s commitment to resource conservation: the environmentally-friendly fluid filter cartridges no longer have a permanently attached sheet metal housing, but rather are simply inserted into an aluminium housing. The filter cartridges themselves feature a metal-free design and are suitable for thermal disposal at the end of their service life without additional pre-treatment.

The SIGMA Control 2 compressor controller is responsible for monitoring the compressor and, if equipped, the frequency converter. The controller also enables the compressor to benefit from convenient remote service options whilst allowing for straightforward connection to master controller systems such as the HPC KAESER SIGMA AIR MANAGER 4.0 or data networks, as is the case for integration of the compressors into an Industry 4.0 environment.

The highly versatile DSD & DSDX series includes both water- and air-cooled models. Since variable-speed drive can be advantageous for certain applications, versions are also available with variable-speed control implemented via a frequency converter. As with the standard models, these versions are designed with efficiency, reliability and ease of maintenance in mind.