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PAGE 32 — INDUSTRIAL GENERATOR SETS — APPLICATION & INSTALLATION MANUAL — REV. #4 (09/07/07)
ENVIRONMENTAL CONSIDERATIONS — dB(A)
Acoustic Material
Consider the following when selecting acoustic material:
1. DO NOT use fiberglass as an acoustic material.
Fiberglass is a poor selection of acoustic material
because of its low density, poor flame retardant, and
poor cleanability.
2. Foam is least likely to deteriorate due to abrasion and
has good aesthetics. However, foam is difficult to clean
and not all foams are fire retardant.
3. A concrete block enclosure is an excellent barrier in
regards to noise reduction. The blocks may be filled
with sand to make the wall more dense. However,
concrete housing tends to become hot and superior
cooling methods will be required for proper engine
performance.
Figure 5. Reducing Noise
Acoustic Material
Figure 5 below illustrates installation methods for reducing
noise level to achieve a quieter operating generator set.
Wind / Noise Barrier
Flexible Duct
Section
Flexible Exhaust
Connector
Acoustic
Louvers
Vibration
Isolator
Isolation
Foundation
Vertical
Exhaust
Critical Grade
Muffler 25-35 dB(A)
Attenuation
Structure of
Sufficient Density
to Contain Noise