Posted: 6/15/2012 5:33:28 PM EDT
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Is it possible to quiet something like this down with causing it to over heat?
Perkins Diesel Generator |
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Does CMD have an enclosure that will fit that unit Zeek? That would certainly help-unless you intend to build your own.
The server room backup genset in one of our FL offices came with a rudimentary uninsulated enclosure that was loud as hell. It was so loud in fact that our neighbors actually complained monthly-whenever we exercised it 
The genset vendor used a sound deadening material with the brand name of Dynamat I believe. Apparently a version of this stuff is popular with car stereo buffs to line speaker enclosures. While it didn't completely eliminate the noise, it reduced it enough so the neighbors stopped crying  No idea where he bought it or how much it cost, but it did work fairly well.Posted Via AR15.Com Mobile |
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Sure - With enough sound-deadening material, anything's possible. Why are they using belt drive?  Maybe because the engine runs at 1800 rpms They also make alternator heads that run at 1800 RPM - which would have eliminated the need for a wear- and breakage-prone belt. |
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Sure - With enough sound-deadening material, anything's possible. Why are they using belt drive? Maybe because the engine runs at 1800 rpms They also make alternator heads that run at 1800 RPM - which would have eliminated the need for a wear- and breakage-prone belt. That would make more sense. Maybe the belts are for something else. ETA: I gotta say you're pretty observant to catch the belts. |
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We put 95% of our generators inside concrete block buildings- that helps a lot. Generator is either sitting on mounts or is on a seperate slab (expansion joint seperatign this from the rest of the slab and/or walls. Also a piece of flex on the exhaust manifold to stop vibration. Then a big assed muffler, and wrap the mufler in fiberglass insulation.
Many of our sites are now in residential neighborhoods- the generatror is quieter then the typical pickup truck running in the parkign area. 1800 rpms helps a lot- the noise is less irritating. |
Most commercially-built generator enclosures have an air inlet on the radiator/fan side of the generator, and an air outlet on the alternator head side.
Typically, the inlet and outlet are mounted at right angles to the generator, so that noise has to bounce off at least one interior surface before it can escape the enclosure. Some of these interior surfaces are lined with sound-absorbing materials, so some of the noise is absorbed as it bounces off the surface. In some cases, the air flows through a "labyrinth" consisting of several staggered surfaces covered with sound-absorbing material, so that the noise has to bounce off several of these surfaces before it can escape the enclosure. Another trick is to point the air inlet and/or outlet towards the sky, or towards the ground, thereby directing the noise away from areas where it would be objectionable. 
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