Generator Enclosure Sound Reduction Analysis
Generator Enclosure Sound Reduction Analysis
(OP)
I have a generator inside a sound reduction enclosure and am trying to determine the decibel level directly outside of the enclosure. I know there are quite a few variables to nail down, but is there a method to calculating an estimated noise level if I determine the following:
1.). Enclosure steel construction
2.). Insulation material
3.). Generator dB level and frequency
Is there a way to determine a noise reduction coefficient? Can this be used to estimate levels?
Obviously this not a type of application we deal with every day, but would appreciate any advice on the above. Thank you.
1.). Enclosure steel construction
2.). Insulation material
3.). Generator dB level and frequency
Is there a way to determine a noise reduction coefficient? Can this be used to estimate levels?
Obviously this not a type of application we deal with every day, but would appreciate any advice on the above. Thank you.
RE: Generator Enclosure Sound Reduction Analysis
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Generator Enclosure Sound Reduction Analysis
I really don't need the estimate to be extremely accurate. Thanks.
RE: Generator Enclosure Sound Reduction Analysis
Thanks.
RE: Generator Enclosure Sound Reduction Analysis
I'd use a radios shack SLM as a microphone and freeware FFT software on a laptop to analyze the sounds I'm dealing with before getting too deep into the enclosure design.
There may well be some low hanging fruit that would add considerably to the enclosure's job.
What is the generator make and model?
Is it constant speed?
Is it already as quiet as the equivalent Honda generator?
Are you sure the exhaust system is the best commercially available version?
As a first cut, is the volume of the muffler at least 10X the engine cubic inch displacement?
Folks have adapted automotive exhaust mufflers in pretty creative ways.
All my generators' intakes are pretty crude. Just wide open air filters really.
Listen to what happens when a "tuner" replaces their OEM intake silencer with an open cone filter.
Similarly, simply adding a giant aftermarket expansion chamber intake "silencer" to my old Curtis air compressor made about a zillion dB improvement. It is almost pleasant to be around now.
RE: Generator Enclosure Sound Reduction Analysis
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Generator Enclosure Sound Reduction Analysis
Do you know the name of the book by Harris or Beranek? Thanks!
RE: Generator Enclosure Sound Reduction Analysis
https://www.amazon.com/Noise-Vibration-Control-Leo...
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Generator Enclosure Sound Reduction Analysis
RE: Generator Enclosure Sound Reduction Analysis