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AERZEN

27-04-17

Bespoke noise protection

27-04-17

AERZEN relies on the advantages of reactive silencers

With reactive silencers, AERZEN reduces the noise emissions on the discharge side of its screw compressors, positive displacement blowers, and rotary lobe compressors. The innovative concept of these reactive silencers is superior to classic dissipative silencers in many respects.

 

The sound waves developing on the discharge side of a Delta Screw compressor made by AERZEN can reach 170 to 190 dB. Therefore, a downstream silencer is obligatory, same as with all customary compressors. The high frequencies of the sound waves lead to considerable vibration forces which have a damaging effect on the piping and the insulating material in conventional dissipative silencers. This so-called micro friction wears out the filter material over time and can damage even stainless steel in the long run. This leads to a reduction of the effectiveness of the silencer and to the erosion of finest particles. These contaminate the process air and can lead to hygiene risks for example in the foodstuff production or can clog the fine-pored aeration elements in the aeration basin of a wastewater treatment plant. Downstream filters have to be used, which lead to pressure losses, reduced efficiency levels, reduced energy efficiency and increased maintenance expenditure.

 

The other way: neutralising instead of