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Acoustacraft Noise Reduction Solutions
Louvres , Panels , attenuators, Screens, enclosures,
The sound reduction index (transmission loss) of acoustic louvres is obtained using a substitution technique designed to simulate typical plant room side-mounting. The test method requires a random incident sound field to be generated in a reverberant source room (typical plant room). With the acoustic louvre in position, the resultant octave band sound pressure levels outside the wall housing the louvres are measured at five fixed positions in the far field. The louvre is then mounted from the aperture and the increased sound pressure level measured at the same microphone positions. The difference between the sound pressure levels at each microphone position is used to determine the sound reduction index achieved by the louvre.
Typically used for the ventilation of air handling units, water chillers, generators, fans and plant rooms where the common aim is to allow the throughput of air and reduce noise emissions to acceptable levels.
In addition to being sued as singular panels within an existing building fabric, our acoustic louvres may be utilised as independent structures as follows:
Roofless acoustic enclosures typically used for high powered roof mounted chillers where airflow is paramount & high noise levels to surrounding areas must be avoided. Acoustic louvred doors can be used in these enclosures where plant access is required with minimum disturbance of aesthetic appearance.
Acoustic Penthouses consisting of up to four acoustic louvred panels retained with a rigid steel framework and weatherproofed roof. Typically used for common supply/extract fan air intakes and discharges.
Self finish
For oil or grease-laden environments: suffix ‘M’ should be added, e.g AL300/M
The use of this polyester membrane will reduce the silencers acoustic performance particularly at mid and high end frequencies.
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