Acoustics. Guidelines for noise control by silencers

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

15-12-1998

Publisher

British Standards Institution

1 Scope
2 Normative references
3 Terms and definitions
4 Specifications, selection and design considerations
    4.1 Requirements to be specified
    4.2 Selection and layout of silencers
    4.3 Design of special silencers
5 Types of silencers, general principles and
    operational considerations
    5.1 Overview
    5.2 Acoustic and aerodynamic performance of silencers
    5.3 Sound propagation paths
    5.4 Acoustic installation effect
    5.5 Abrasion resistance and protection of absorbent
          surfaces
    5.6 Fire hazards and protection against explosion
    5.7 Starting-up and closing-down of plants
    5.8 Corrosion
    5.9 Hygienic requirements and risk of contamination
    5.10 Inspection and cleaning, decontamination
6 Performance characteristics of types of silencers
    6.1 Dissipative silencers
    6.2 Reactive silencers
    6.3 Blow-off silencers
7 Measurement techniques
    7.1 Laboratory measurements
    7.2 Measurements in situ
    7.3 Measurements on vehicles
8 Information on silencers
    8.1 Information to be provided by the user
    8.2 Information to be provided by the manufacturer
Annex A (informative) Applications
Annex B (informative) Effect of spectral distribution of
sound on the declaration of attenuation in one-third-octave
or octave bands
Annex C (informative) Operating temperatures of sound sources
and temperature limits of sound-absorbent materials
Bibliography

Establishes a practical selection of silencers for noise control in gaseous media. Defines the acoustical and operational requirements for agreement between the supplier, manufacturer or user of a silencer. Describes the basic operation principles, but is not intended to be a silencer design guide.

This International Standard deals with the practical selection of silencers for noise control in gaseous media. It specifies the acoustical and operational requirements which are to be agreed upon between the supplier or manufacturer and the user of a silencer. The basic principles of operation are described in this International Standard, but it is not a silencer design guide.

The silencers described are suitable, among others,

for attenuating system noise and preventing crosstalk in heating, ventilation and air-conditioning (HVAC) equipment;
for preventing or reducing sound transmission through ventilation openings from rooms with high inside sound levels;
for attenuating blow-off noise generated by high-pressure lines;
for attenuating intake and exhaust noise generated by internal combustion engines; and for attenuating intake and outlet noise from fans, compressors and turbines.

They are classified according to their types, performance characteristics and applications. Active and adaptive passive noise-control systems are not covered in detail in this International Standard.

Committee	EH/1/4
DevelopmentNote	Supersedes 96/563328 DC. (11/2005)
DocumentType	Standard
Pages	56
PublisherName	British Standards Institution
Status	Current
Supersedes	96/563328 DC : OCT 96

Standards	Relationship
NF EN ISO 14163 : 1999	Identical
ISO 14163:1998	Identical
DIN EN ISO 14163:1999-05	Identical
SN EN ISO 14163 : 1999	Identical
UNE-EN ISO 14163:1999	Identical
NS EN ISO 14163 : 1ED 1998	Identical
NBN EN ISO 14163 : 1999	Identical
I.S. EN ISO 14163:1999	Identical
UNI EN ISO 14163 : 2001	Identical
EN ISO 14163 : 1998	Identical
NEN EN ISO 14163 : 1998	Identical

BS 8233:1999	Sound insulation and noise reduction for buildings. Code of practice
PD 5304:2005	GUIDANCE ON SAFE USE OF MACHINERY
13/30241578 DC : 0	BS 8233 - GUIDANCE ON SOUND INSULATION AND NOISE REDUCTION FOR BUILDINGS
BS 8233:2014	Guidance on sound insulation and noise reduction for buildings

ISO 3744:2010	Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflecting plane
ISO 11546-2:1995	Acoustics Determination of sound insulation performances of enclosures Part 2: Measurements in situ (for acceptance and verification purposes)
ISO 11957:1996	Acoustics — Determination of sound insulation performance of cabins — Laboratory and in situ measurements
ISO 9053:1991	Acoustics Materials for acoustical applications Determination of airflow resistance
EN ISO 11820 : 1996	ACOUSTICS - MEASUREMENTS ON SILENCERS IN SITU
ISO 362:1998	Acoustics Measurement of noise emitted by accelerating road vehicles Engineering method
EN ISO 7235:2009	Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss (ISO 7235:2003)
ISO 11820:1996	Acoustics — Measurements on silencers in situ
ISO 11690-2:1996	Acoustics Recommended practice for the design of low-noise workplaces containing machinery Part 2: Noise control measures
EN ISO 3744:2010	Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO 3744:2010)
EN 23741 : 1991	ACOUSTICS - DETERMINATION OF SOUND POWER LEVELS OF NOISE SOURCES - PRECISION METHODS FOR BROADBAND SOURCES IN REVERBERATION ROOMS
ISO 11546-1:1995	Acoustics Determination of sound insulation performances of enclosures Part 1: Measurements under laboratory conditions (for declaration purposes)
ISO 3741:2010	Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for reverberation test rooms
ISO 7235:2003	Acoustics — Laboratory measurement procedures for ducted silencers and air-terminal units — Insertion loss, flow noise and total pressure loss
EN ISO 11691:2009	Acoustics - Measurement of insertion loss of ducted silencers without flow - Laboratory survey method (ISO 11691:1995)
ISO 11691:1995	Acoustics Measurement of insertion loss of ducted silencers without flow Laboratory survey method

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BS EN ISO 14163:1998

Current

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referenced By This Book

Standards Referencing This Book

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