Glaston offers new Kaeser DSD rotary screw compressors

15 February, 2017

The new range of DSD series compressors features a rotary screw compressor block inside each compressor. This rotary screw compressor block is equipped with flow-optimised and energy-saving Sigma Profile rotors. The new generation boasts improved profile rotors which have been further refined.

The compressors are available in both air and water cooled systems. The compressors have a drive power of 75 to 132kW, a working pressure 5.5 to 15bar and free air deliveries from 3.6 to 25.45m3 /min. They are offered as a standard machine with integrated refrigeration dryer and/or with Sigma Frequency Control.

Increased power performance

The latest DSD compressors have increased power performance by up to 6% along with other optimisation measures. The new motor is a ‘super premium efficiency’ IE4 electric motor which exceeds worldwide regulations for 3 phase electric motors. The new efficiency qualities will of course contribute to lower energy costs. Transmission losses associated with gear or belt drive solutions are also further eliminated with the 1:1 direct drive systems.

The new compressor series feature a built-in Sigma Control 2. The Sigma Control is an industrial PC-based compressor controller that dynamically adjusting the flow rate to match actual compressed air demand. Sigma Controls enable compressors to run at optimum efficiency, increasing energy savings.

Another impressive feature that is available in some of the new air compressors is heat recovery. All compressor models can be specified with an optional integrated fluid/water plate-type exchanger and an additional fluid-thermal valve. The Sigma Control 2 controls the compressor temperature to ensure that hot process water supplied by the heat recovery system achieves the necessary water outlet temperature.

Savings will also be made because if all the heat energy is drawn off by the heat recovery system, the Sigma Control detects that cooling is no longer required at the package cooler and the fan on the oil cooler will be shut off.

Furthermore, when heat recovery is not required it can easily be deactivated via the Sigma Control 2. This is advantageous as the package reverts to operation with the lowest possible screw compressor block discharge temperature – producing further energy savings.

The new compressors utilise a secure login via radio frequency Identification (RFID) technology. Any system changes to the compressor or service work can only be performed by authorised employees.

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