Comvac: energy efficiency through new technologies and heat recovery

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Aerzener Maschinenfabrik GmbH

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BOGE KOMPRESSOREN Otto Boge GmbH & Co. KG

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According to Aerzener’s Marketing Director, Stephan Brand, the Delta Hybrid machines are up to 15 percent more efficient than conventional compressors because they are able to select the most energy-efficient compressor type for the application and pressure range in question. Thus, at low pressure ranges they deploy Roots-style positive displacement compression technology, while at higher pressures they select screw compressor technology, which functions in accordance with the internal compression principle.

Aerzener Maschinenfabrik has developed Delta Hybrid units for the oil-free compression and conveyance of air and inert gases in applications such as sewage treatment plants, the chemicals industry and power plant technology, as well as for the conveyance and unloading of powdered goods.

“The big picture” – Energy Efficiency Is the Sum of All Parts

Kaeser Kompressoren will be taking an integrated look at energy efficiency at its Comvac showcase, which will feature a whole range of compressor products and solutions. “It’s all about the interplay between the component parts,” explained Kaeser press spokesperson Daniela Köhler, referring to the Kaeser philosophy that high levels of energy efficiency — and hence economical compressed air generation — are achievable only if the individual components of a compressed air system work together in perfect harmony.

Kaeser’s commitment to efficiency is evident from that fact that its latest direct-drive rotary screw compressors already use IE3 (Premium Efficiency) motors — even though the latter won’t become mandatory in the EU until 1 January 2015. The screw compressor block has also been fluidically optimized for further reductions in energy consumption. “Our latest-generation of ‘Sigma Air Manager’ higher-level controllers contribute further to the efficiency gains, as do our new Secotec refrigeration dryers, thanks to their use of thermal storage mediums,” Köhler said.

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