Title: Sound enclosures provide weather protection and sound attenuation

With the growth of standby, prime and peaking power installations in highly populated areas, design engineers have focused their attention on understanding how generator set noise is propagated and controlled. The high cost of retrofitting a site for noise reduction makes it imperative to assess noise performance requirements early in the on-site power system design stage. This Cummins white paper outlines procedures to help, power system designers and end users more easily control unwanted noise from their on-site power system. there are basically seven strategies for reducing generator set noise: 1) reduce the sound level of the source; 2) acoustic barriers; 3) acoustic insulation; 4) isolation mounts; 5) cooling air attenuation; 6) exhaust silencers; and 7) efforts to maximize the distance between the generator set and the property line (or people). When locating generator sets outdoors, the use of enclosures – particularly sound-attenuating enclosures – combines all of these strategies into a convenient package that provides weather protection as well as sound attenuation.

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