Rush Engineering, Inc.
NOX Induction Stack Noise Reduction
Neighborhood residents complaining of acoustic noise
emitting from manufacturing facility blower sound enclosure.
One half mile diameter acoustic survey reveals significant noise present
Residential acoustic signature identifies noise frequencies.
NOX scrubber stack contains residential signature acoustic energy
NOX Scrubber Stack tested for "singing" of fiberglass walls.
NOX scrubber stack acoustically evaluated for "singing" throughout operating
NOX scrubber stack wall vibration indicates "singing" at 1/REV and at
NOX scrubber gas stream pulsation dominating near field noise readings.
NOX scrubber gas stream pulsation noise radiating as a point source toward
Internal acoustic silencer added to NOX scrubber stack for 20 dB noise
attenuation in neighborhood.
Design objective for residential noise abatement with inline stack
View of modified stack with internal silencer installed.
Design result in residential noise abatement with inline stack silencer
Industrial plant reduces neighborhood noise, and complaints from residents cease.
it's dynamic, it's a Rush
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