1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 10302-1:2011Acoustics Measurementof airborne noise emittedand structure-borne vibrationinduced by small air-movingdevicesPart 1: Airborne noise measurementBS ISO 10302-1:2
2、011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 10302-1:2011.It supersedes BS 848-2.6:2000 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EH/1, Acoustics.A list of organizations represented on this committee c
3、an beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 67285 9ICS 17.140.20; 23.120Compliance with a British Standard cannot confer immunity fromlegal o
4、bligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2011.Amendments issued since publicationDate Text affectedBS ISO 10302-1:2011Reference numberISO 10302-1:2011(E)ISO 2011INTERNATIONAL STANDARD ISO10302-1First edition2011-01
5、-15Acoustics Measurement of airborne noise emitted and structure-borne vibration induced by small air-moving devices Part 1: Airborne noise measurement Acoustique Mesurage du bruit arien mis et des vibrations de structure induites par les petits quipements de ventilation Partie 1: Mesurage du bruit
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9、ecretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in w
10、riting from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2011 All rights reservedBS ISO
11、10302-1:2011ISO 10302-1:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Terms and definitions .2 3.1 General definitions2 3.2 Acoustical definitions .3 3.3 Aerodynamic definitions.3 4 Limitations of measurement 5 5 Design and perfor
12、mance requirements for test plenum .5 5.1 General .5 5.2 Test plenum: Main assembly .6 5.3 Mounting panel assembly 6 5.4 Adjustable exit port assembly .7 5.5 Insertion loss of test plenum .7 5.6 Instrumentation for static pressure measurement 7 6 Installation8 6.1 Installation of test plenum in test
13、 room 8 6.2 Direction of airflow 8 6.3 Mounting of air-moving device 8 7 Operation of air-moving device .8 7.1 Input power 8 7.2 Points of operation (AC and DC air-moving devices)9 8 Measurement procedures.10 8.1 General .10 8.2 Microphone positions for measurements in an essentially free field over
14、 a reflecting plane .10 8.3 Preparations for measurements 11 8.4 Operational test of air-moving device.11 9 Measurement uncertainty.12 10 Information to be recorded.12 11 Information to be reported13 Annex A (normative) Micro-fan p-q curve measurement method 23 Annex B (informative) Effects of air d
15、ensity 25 Annex C (informative) Data formats for presentation .26 Annex D (informative) Air-moving device acoustical noise specification 30 Annex E (informative) Guidance on the development of information on measurement uncertainty.31 Bibliography37 BS ISO 10302-1:2011ISO 10302-1:2011(E) iv ISO 2011
16、 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a s
17、ubject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission
18、(IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical comm
19、ittees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not
20、be held responsible for identifying any or all such patent rights. ISO 10302-1 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise. This first edition of ISO 10302-1 cancels and replaces ISO 10302:1996. ISO 10302 consists of the following parts, under the general title
21、 Acoustics Measurement of airborne noise emitted and structure-borne vibration induced by small air-moving devices: Part 1: Airborne noise measurement Part 2: Structure-borne vibration measurements BS ISO 10302-1:2011ISO 10302-1:2011(E) ISO 2011 All rights reserved vIntroduction This part of ISO 103
22、02 specifies in detail methods for determining and reporting the airborne noise emissions of small air-moving devices (AMDs) used primarily for cooling electronic equipment, such as that for information technology and telecommunications. To provide compatibility with measurements of acoustical noise
23、 emitted by such equipment, this part of ISO 10302 uses the noise emission descriptors and sound power measurement methods of ISO 7779. The descriptor of overall airborne noise emission of the AMD under test is the A-weighted sound power level. The one-third-octave-band sound power level is the deta
24、iled descriptor of the noise emission. Octave-band sound power levels may be provided in addition to the one-third-octave-band sound power levels. BS ISO 10302-1:2011BS ISO 10302-1:2011INTERNATIONAL STANDARD ISO 10302-1:2011(E) ISO 2011 All rights reserved 1Acoustics Measurement of airborne noise em
25、itted and structure-borne vibration induced by small air-moving devices Part 1: Airborne noise measurement 1 Scope This part of ISO 10302 specifies methods for measuring the airborne noise emitted by small air-moving devices (AMDs), such as those used for cooling electronic, electrical, and mechanic
26、al equipment where the sound power level of the AMD is of interest. Examples of these AMDs include propeller fans, tube-axial fans, vane-axial fans, centrifugal fans, motorized impellers, and their variations. This part of ISO 10302 describes the test apparatus and methods for determining the airbor
27、ne noise emitted by small AMDs as a function of the volume flow rate and the fan static pressure developed by the AMD on the test apparatus. It is intended for use by AMD manufacturers, by manufacturers who use AMDs for cooling electronic equipment and similar applications, and by testing laboratori
28、es. It provides a method for AMD manufacturers, equipment manufacturers and testing laboratories to obtain comparable results. Results of measurements made in accordance with this part of ISO 10302 are expected to be used for engineering information and performance verification, and the methods can
29、be cited in purchase specifications and contracts between buyers and sellers. The ultimate purpose of the measurements is to provide data to assist the designers of electronic, electrical or mechanical equipment which contains one or more AMDs. Based on experimental data, a method is given for calcu
30、lating the maximum volume flow rate of the scaled plenum up to which this part of ISO 10302 is applicable. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, t
31、he latest edition of the referenced document (including any amendments) applies. ISO 3741, Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for reverberation test rooms ISO 3744, Acoustics Determination of sound power level
32、s and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflecting plane ISO 3745, Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for anechoic test rooms an
33、d hemi-anechoic test rooms1)1) To be published. (Revision of ISO 3745:2003.) BS ISO 10302-1:2011ISO 10302-1:2011(E) 2 ISO 2011 All rights reservedISO 5801:2007, Industrial fans Performance testing using standardized airways ISO 7779:2010, Acoustics Measurement of airborne noise emitted by informatio
34、n technology and telecommunications equipment ISO/IEC Guide 98-3, Uncertainty of measurement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) ANSI/ASA S2.32, Methods for the experimental determination of mechanical mobility Part 2: Measurements using single-point translationa
35、l excitation JBMS 72:2003, Acoustics Method for the measurement of airborne noise emitted by micro-fans 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 7779 and the following apply. 3.1 General definitions 3.1.1 air-moving device AMD fan device for m
36、oving air which utilizes a rotating impeller driven by an electric motor with electronic or mechanical command NOTE 1 An air-moving device has at least one inlet opening and at least one outlet opening. The openings can have elements for connection to ductwork or to other parts of the airflow path.
37、NOTE 2 Tests can be run with a particular frame, motor, and rotor, but with different accessories (e.g. finger guards). For the purposes of this part of ISO 10302, each such configuration is referred to as an air-moving device. NOTE 3 Within some industries, including information technology, the unm
38、odified term “fan” means “axial flow air-moving device”, and the unmodified term “blower” means “centrifugal air-moving device”. In this part of ISO 10302, the term “fan” is used to mean “air-moving device” and does not necessarily imply axial flow. Modifiers (such as axial, centrifugal or mixed flo
39、w) are added as necessary to distinguish between types. 3.1.2 micro-fan air-moving device which has a maximum volume flow rate less than or equal to 0,015 m3/s NOTE 1 Micro-fans are a subset of fans under test according to this part of ISO 10302. NOTE 2 ISO 5801:2007, 22.4.2, Table 4 limits the rang
40、e of applicability to Reynolds numbers of 12 000 or higher. This Reynolds number corresponds to the lower limit of volume flow rate of approximately 0,01 m3/s. Since lower volume fans are of interest for many cooling applications, the methodology of JBMS-72:2003, Annex A is used to measure the p-q c
41、urve of a micro-fan. BS ISO 10302-1:2011ISO 10302-1:2011(E) ISO 2011 All rights reserved 33.2 Acoustical definitions 3.2.1 sound power level LWten times the logarithm to the base 10 of the ratio of the sound power, P, to a reference value, P0, expressed in decibels 010 lg dBWPLP= (1) where the refer
42、ence value, P0, is 1 pW NOTE If a specific frequency weighting as specified in IEC 61672-16and/or specific frequency bands are applied, this should be indicated by appropriate subscripts; e.g. LWAdenotes the A-weighted sound power level. 3.2.2 frequency range of interest range extending from the 100
43、 Hz one-third-octave band to the 10 kHz one-third-octave band NOTE 1 The centre frequencies of these one-third-octave bands are defined in ISO 2661. NOTE 2 For small, low-noise fans to be measured (i.e. micro-fans), depending on the size of applicable plenum, the radius of the test hemisphere may be
44、 reduced to less than 1 m, but not less than 0,5 m (see 8.2.1). However, a radius less than 1 m could itself impose limits on the frequency range over which tests are performed. For details, reference is made to ISO 7779:2010, B.1. 3.2.3 insertion loss of test plenum L sound power level difference d
45、ue to the presence of test plenum, defined as follows: L = LW,out LW,in(2) where LW,outis the sound power level of a sound source determined when installed outside the test plenum; LW,inis the sound power level of a sound source determined when installed inside the test plenum NOTE The insertion los
46、s of the test plenum is expressed in decibels. 3.3 Aerodynamic definitions 3.3.1 test plenum structure on to which the air-moving device under test is mounted for acoustical noise emission measurements NOTE The plenum provides a flow resistance to the air-moving device, but permits sound from the ai
47、r-moving device to radiate freely into the test room with only minimal attenuation. Thus, the sound power radiated by the air-moving device can be determined from acoustical measurements made outside the test plenum. BS ISO 10302-1:2011ISO 10302-1:2011(E) 4 ISO 2011 All rights reserved3.3.2 air-movi
48、ng device aerodynamic performance curve “p-q curve” presentation of fan static pressure as a function of volume flow rate under standard air conditions and constant operating voltage and frequency NOTE 1 For the purpose of this part of ISO 10302, a qualifier, “aerodynamic”, before “performance curve
49、” is inserted to distinguish from acoustical noise emission characteristics against volume flow rate. NOTE 2 The presentation is derived in accordance with ISO 5801 or Annex A, which complement each other. The method for small air-moving devices of volume flow rate up to 0,015 m3/s is specified in Annex A. NOTE 3 For convenience, in this part of ISO 10302, the term “p-q curve” is used. 3.3.3 point of operation point on the air-moving device aerodynamic performance curve corresponding to a particular
