Vibro-Acoustics® Plenums, Enclosures & Barriers
Plenums
Plenums
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Vibro-Acoustics’ plenums are used to provide low frequency attenuation for critical systems or for air distribution where multiple branch ducts are required directly after an air handling unit.
Description
VIBRO-ACOUSTICS’ AP SILENCERS are expansion chambers with thick acoustical lining. The most common lining thickness specified is 4” for fan noise control. Thicker treatment of 6” or even 8” is more effective in the low frequency range. Plenum wall lining of acoustic grade glass fiber is held in place and protected by perforated metal. Glass fiber cloth or a film liner such as Tedlar, between the perforated metal and the glass fiber, may be used to minimize glass fiber erosion. For certain applications, the perforated liner may be replaced by solid sheet to eliminate air coming in contact with the fiberglass media. For applications where no media can be allowed within the plenum whatsoever, specially tuned chambers are used within the perforated liner for sound attenuation. Intake AP silencers may enclose a fan and include multiple inlet or discharge openings. Fan, coil or filter access via removable panels, panel sections or doors may be provided. Fan discharge AP silencers may provide multiple discharge take-offs in varying directions.
Applications
- For low frequency attenuation
- Integral to or in conjunction with air handling units
- When the noise needs to be contained at the source
- To help quiet noisy fan rooms
Absorption Panels
Absorption Panels
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Vibro-Acoustics’ line of absorption panels can be applied to a space to reduce reflective sound energy. They also can be used to line shafts, mechanical rooms and other spaces that require sound level reduction.
Absorption panels are used to create sound absorbing surfaces using existing concrete or metal walls to reduce reflective sound energy. They also serve to enhance the transmission loss of walls. Ideal for both commercial and industrial applications with new and retrofit applications. They are single skin panels with acoustic media within and can be attached to existing walls. The acoustic media then gets sandwiched between the panel skin and the wall.
Enclosures
Enclosures
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Vibro-Acoustics’ enclosures are used to surround mechanical equipment and reduce radiated noise transmitted to occupied spaces within buildings. They are also utilized in outdoor installations to prevent reflected or transmitted property line noise issues.
Barriers
Barriers
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Our barriers are placed between a noise source and a sensitive receptor in order to increase the length of path the noise must take, thereby providing additional attenuation.