BS-ISO-13347-4-2004 BS-848-2.4-2004.pdf
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1、BRITISH STANDARD BS ISO 13347-4:2004 BS 848-2.4:2004 Incorporating corrigendum October 2006 Industrial fans Determination of fan sound power levels under standardized laboratory conditions Part 4: Sound intensity method ICS 17.140.20; 23.120 ? Copyright British Standards Institution Provided by IHS
2、under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:12:23 MDTNo reproduction or networking permitted without license from IHS -,-,- BS ISO 13347-4:2004 This British Standard was published under the authority of the Standards Policy and Strategy Comm
3、ittee on 25 August 2004 BSI 2008 ISBN 978 0 580 62314 1 National foreword This British Standard is the UK implementation of ISO 13347-4:2004, incorporating corrigendum October 2006. Together with BS ISO 13347-1:2004 (BS 848-2.1:2004), BS ISO 13347-2:2004 (BS 848-2.2:2004), BS ISO 13447-3:2004 (BS 84
4、8-2.3:2004), it supersedes BS 848-2:1985, which is now withdrawn. The start and finish of text introduced or altered by corrigendum is indicated in the text by tags. Text altered by ISO corrigendum October 2006 is indicated in the text by . The UK participation in its preparation was entrusted to Te
5、chnical Committee MCE/17, Industrial fans. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a
6、British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments 30 April 2008Implementation of ISO corrigendum October 2006 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing C
7、o/5910770001 Not for Resale, 08/14/2008 22:12:23 MDTNo reproduction or networking permitted without license from IHS -,-,- Reference number ISO 13347-4:2004(E) INTERNATIONAL STANDARD ISO 13347-4 First edition 2004-08-15 Industrial fans Determination of fan sound power levels under standardized labor
8、atory conditions Part 4: Sound intensity method Ventilateurs industriels Dtermination des niveaux de puissance acoustique des ventilateurs dans des conditions de laboratoire normalises Partie 4: Mthode par intensit acoustique BS ISO 133474:2004 Copyright British Standards Institution Provided by IHS
9、 under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:12:23 MDTNo reproduction or networking permitted without license from IHS -,-,- ii Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boein
10、g Co/5910770001 Not for Resale, 08/14/2008 22:12:23 MDTNo reproduction or networking permitted without license from IHS -,-,- IS-74331 O4:(4002E) iii Contents Page Forewordiv Introduction v 1 Scope1 2 Normative references .1 3 Instruments and methods of test 2 4 Equipment and test set-ups.4 5 Test m
11、ethod.12 6 Calculations.16 7 Report and results 18 Annex A (normative) Indicators for use in case of difficulty.20 Annex B (normative) Alternative procedure for testing of large fan equipment .21 Annex C (normative) Radiation of sound by fan casing 23 Bibliography .25 BS ISO 133474:2004 Copyright Br
12、itish Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:12:23 MDTNo reproduction or networking permitted without license from IHS -,-,- IS-74331 O4:(4002E) iv Foreword ISO (the International Organization for S
13、tandardization) 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 subject for which a technical committee has been established has the ri
14、ght 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 (IEC) on all matters of electrotechnical standardization. Internationa
15、l 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 committees are circulated to the member bodies for voting. Publication as
16、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 be held responsible for identifying any or all such patent rights. ISO
17、 13347-4 was prepared by Technical Committee ISO/TC 117, Industrial fans. ISO 13347 consists of the following parts, under the general title Industrial fans Determination of fan sound power levels under standardized laboratory conditions: Part 1: General overview Part 2: Reverberant room method Part
18、 3: Enveloping surface methods Part 4: Sound intensity method BS ISO 133474:2004 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:12:23 MDTNo reproduction or networking permitted without lic
19、ense from IHS -,-,- IS-74331 O4:(4002E) v Introduction This part of ISO 13347 establishes a method for determining the sound power level of a fan. The method is reproducible in all laboratories which are qualified according to the requirements of this part of ISO 13347. The method employs standard s
20、ound measurement instrumentation. The test set-ups are generally designed to represent the physical orientation of a fan as installed, in accordance with ISO 5801. Since sound power levels are considered independent of the acoustic environment around the fan, a good comparison may be made between tw
21、o or more fans proposed for any specific air performance condition. Moreover, these values establish an accurate base for estimating the acoustical outcome of the fan installation in terms of sound pressure levels. A successful estimate of sound pressure levels requires extensive information on the
22、fan and the environment in which it is to be located. It is often advantageous for the equipment user to employ acoustical consultation to ensure that all factors which affect the final sound pressure levels are considered. More detailed information on the complexity of this situation may be found i
23、n acoustic textbooks. This part of ISO 13347 has been developed in response to the need for a reliable and accurate enveloping surface method for determining the sound power levels of fan equipment. Where possible, it has been based on existing National standards and combines state-of-the-art with p
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