The new DSDX rotary screw compressor range from KAESER

KAESER’s new fluid-cooled DSDX rotary screw compressor range combines outstanding performance and energy efficiency with a versatile and compact compressor design. Motor powers of either 132 or 160 kW provide air deliveries of 24 to 30 m³/min and - as with every KAESER rotary screw compressor - all DSDX units are designed for pressures up to 15 bar.

These advanced compressor packages not only feature KAESER’s proven modular design concept - which ensures an efficient and reliable source of quality compressed air - but also provide significant energy savings:
1. All DSDX units feature a specially designed large, low speed SIGMA PROFILE airend (1500 rpm ), which uses 15% less energy compared to conventional designs.
2. KAESER rotary screw airends are powered by EU-eff1-rated* drive motors for maximum performance and reliability.
3. KAESER’s highly efficient 1:1 drive design eliminates the transmission losses associated with gear or V-belt driven systems, as the motor directly drives the airend.
4. The internal PC-based SIGMA CONTROL compressor controller has five pre-programmed control options that enable compressor performance to be precisely matched to actual air demand.

DSDX units, like all KAESER rotary screw compressors, feature a highly effective cooling system, which uses an innovative radial fan that draws cool ambient air in through the cooler. The system prevents the cooling air from being pre-warmed and, as a result, optimises the cooling effect. This in turn enables low compressed air discharge temperatures and significantly increases the efficiency of downstream compressed air treatment components, such as dryers and filters. Sound emissions are also considerably reduced.
As the use of variable speed drive has significant advantages for certain applications, the DSDX 302 is available with KAESER’s SIGMA FREQUENCY CONTROL(SFC). Within its wide control range, the SFC-equipped model is able to precisely adjust compressor performance to meet actual demand. Just like the standard control versions, the SFC model is designed for optimised efficiency, operational reliability and ease of maintenance.
Furthermore, the SIGMA CONTROL’s capabilities are not just restricted to the compressor unit, as it can also monitor and automatically manage individual compressed air systems, such as the dryer or frequency control module, and enables the compressor package to be remotely accessed via a modem (Teleservice). Interfaces are also provided as standard for quick and easy connection to master control systems and data networks.
*: These motors conform to the stringent efficiency requirements of the US “Energy Policy Conservation Act“ (EPACT) and to “EU-eff1“, an equivalent voluntary agreement between European electrical motor manufacturers for “High Efficiency“ within the framework of the CEMP agreement (CEMP: Committee of European Manufacturers of Electrical Machines and Power Electronics).

KAESER works photograph – free for publication