BS 4718:1971 - Methods of test for silencers for air distribution systems

BS 4718:1971

Methods of test for silencers for air distribution systems

Status : Superseded, Withdrawn   Published : April 1971 Replaced By : BS EN ISO 7235:2003

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Measurement of performance of unit silencers and silencing elements for ducted ventilating and air conditioning systems; aspects considered are attenuation of broad band airborne sound (insertion loss), generation of aerodynamic noise (generated noise level) by, and change in pressure in, air flowing through silencer. Methods measure insertion loss without airflow. Does not apply to silencers providing selective attenuation over narrow frequency bands, or to silencers designed for direct coupling to a fan or for sound insulation of partitions with ventilated openings.




Standard NumberBS 4718:1971
TitleMethods of test for silencers for air distribution systems
StatusSuperseded, Withdrawn
Publication Date22 April 1971
Withdrawn Date08 September 2003
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Replaced ByBS EN ISO 7235:2003
Draft Superseded By69/27265 DC
DescriptorsAir-distribution systems, Air-conditioning equipment, Silencers, Ventilation equipment, Performance, Performance testing, Noise control devices, Noise control (acoustic), Acoustic measurement, Acoustic testing, Pressure measurement (fluids), Test equipment, Extrapolation, Noise (environmental)
ICS91.140.30
Title in FrenchMethodes d'essai des silencieux pour systemes de distribution d'air
Title in GermanVerfahren zur Pruefung von Schalldaempfern fuer Luftverteilungsanlagen
CommitteeEH/1/4
ISBN0 580 06109 4
PublisherBSI
FormatA4
DeliveryNo
Pages30
File Size738.2 KB
Price£182.00


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