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1、A Reference number ISO 13261-2:1998(E) INTERNATIONAL STANDARD ISO 13261-2 First edition 1998-04-01 Sound power rating of air-conditioning and air-source heat pump equipment Part 2: Non-ducted indoor equipment Dtermination du niveau de puissance acoustique des climatiseurs et pompes chaleur sur lair
2、Partie 2: Appareils intrieurs non raccords Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:26:25 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO
3、13261-2:1998(E) ISO 1998 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 writing from the publisher. International Organizatio
4、n for Standardization Case postale 56 CH-1211 Genve 20 Switzerland Internetcentraliso.ch X.400c=ch; a=400net; p=iso; o=isocs; s=central Printed in Switzerland ii ContentsPage 1Scope 1 2Normative references 1 3Definitions.2 4Requirements for conducting sound tests4 4.1Testing requirements for equipme
5、nt.4 4.2Data to be taken.4 4.3Special testing considerations for the optional 63 Hz octave band .5 4.4Use of windscreen.5 4.5Equipment mounting 5 5Sound rating procedures 6 5.1General.6 5.2Determination of equipment sound power levels6 5.3Determination of the octave band sound power level rating, LW
6、7 5.4Determination of the A-weighted overall sound power level rating, LWA.7 5.5Standard rating conditions.8 6Published ratings.9 6.1General.9 6.2Standard ratings9 6.3Application ratings9 Annex A: Special rating procedure using ISO 9614 10 Annex B: Determination of the single-number, tone-adjusted A
7、- weighted overall sound power level sound quality indicator (LWAT) 11 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:26:25 MDTNo reproduction or networking permitted without
8、 license from IHS -,-,- ISOISO 13261-2:1998(E) iii Foreword 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. Eac
9、h member body interested in a subject 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 Internatio
10、nal Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies
11、 casting a vote. International Standard ISO 13261-2 was prepared by Technical Committee ISO/TC 86, Refrigeration, Subcommittee SC 6, Factory-made air-con- ditioning and heat pump units. Annex A forms an integral part of this part of ISO 13261. Annex B is for information only. Copyright International
12、 Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:26:25 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by I
13、HS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:26:25 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISOISO 13261-2:1998(E) 1 Sound power rating of air-conditioning and air-source heat pump equip
14、ment Part 2: Non-ducted indoor equipment 1 Scope This part of ISO 13261 specifies methods for the determination of sound power ratings of air-conditioning and air- source heat pump equipment to be used indoors. It is applicable to the sound power rating of the indoor sections of non-ducted, factory-
15、made, residential, commercial and industrial air-conditioning and air-source heat pump equipment, which are electrically driven with mechanical compression including free-delivery heat pumps, packaged-terminal air-conditioners and water-source heat pumps. This part of ISO 13261 includes both an octa
16、ve-band sound power level rating and a single-number A-weighted overall sound power level rating. This part of ISO 13261 does not apply to ducted indoor equipment, or to chillers, room fan coil units, products with variable speed compressors, or industrial process equipment. NOTE The terms “air-cond
17、itioner“ and “equipment“ are used to mean “air-conditioners and air-source heat pumps“ in this part of ISO 13261. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 13261. At the time of publication, the
18、editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 13261 are encouraged to investigate the possibility of applying the most recent editions of the standards listed below. Members of IEC and ISO maintain registers of currently val
19、id International Standards. ISO 3742:1988, Acoustics Determination of sound power levels of noise sources Precision methods for discrete-frequency and narrow-band sources in reverberation rooms. ISO 3743-1:1994, Acoustics Determination of sound power levels of noise sources Engineering methods for s
20、mall, movable sources in reverberant fields. Part 1: Comparison method for hard-walled test rooms. ISO 3743-2:1994, Acoustics Determination of sound power levels of noise sources using sound pressure Engineering methods for small, movable sources in reverberant fields Part 2: Methods for special rev
21、erberation test rooms. ISO 3744:1994, Acoustics Determination of sound power levels of noise sources using sound pressure Engineering method in an essentially free field over a reflecting plane. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=
22、NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:26:25 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 13261-2:1998(E) ISO 2 ISO 3745:1977, Acoustics Determination of sound power levels of noise sources Precision methods for anechoic and semi-anechoic
23、 rooms. ISO 4871:1996, Acoustics Declaration and verification of noise emission values of machinery and equipment. ISO 5151:1994, Non-ducted air-conditioners and heat pumps Testing and rating for performance. ISO 9614-1:1993, Acoustics Determination of sound power levels of noise sources using sound
24、 intensity Part 1: Measurement at discrete points. ISO 9614-2:1996, Acoustics Determination of sound power levels of noise sources using sound intensity Part 2: Measurement by scanning. ISO 12001:1996, Acoustics Noise emitted by machinery and equipment Rules for the drafting and presentation of a no
25、ise test code. 3 Definitions For the purposes of this part of ISO 13261, the following definitions apply. 3.1 air-conditioner one or more factory-made assemblies which normally include an evaporator or cooling coil, a compressor and condenser combination, and may also include a heating function; whe
26、re such equipment is provided in more than one assembly, the separated assemblies shall be designed to be used together NOTE The requirements for sound ratings specified in this part of ISO 13261 are based on the use of matched assemblies. 3.2 air-source heat pump one or more factory-made assemblies
27、 which normally include an indoor conditioning coil, a compressor and outdoor coil (including means to provide a heating function), and may optionally include a cooling function; when such equipment is provided in more than one assembly, the separated assemblies shall be designed to be used together
28、 NOTE The requirements for sound ratings specified in this part of ISO 13261 are based on the use of matched assemblies. 3.3 non-ducted indoor air-conditioning equipment air-conditioning and heat pump equipment with free delivery of air from, and returned to, the indoor portion of such equipment. 3.
29、4 room fan-coil unit factory-made assembly which would usually include a water-to-air coil together with an electrically-driven air handling fan(s) enclosed in a casing or mounted on a chassis for built-in or framed-in application to form a complete unit intended to be connected as part of a chilled
30、 water cooling system NOTE The unit may include a heating function as well. 3.5 cassette unit split system air-conditioner or heat pump in which the indoor air-handling section has two or more integral diffusers and a recirculation grille and is normally designed to be hung in a ceiling with a minim
31、um projection into the room. 3.6 sound power level, LW ten times the logarithm to the base 10 of the ratio of the sound power radiated by the sound source under test to a reference sound power, expressed in decibels (dB) NOTE The reference sound power used in this part of ISO 13261 is 1 pW (picowatt
32、). Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:26:25 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO ISO 13261-2:1998(E) 3 3.7 sound pressure
33、 level, Lp ten times the logarithm to the base 10 of the ratio of a given sound pressure squared to a reference sound pressure squared, expressed in decibels (dB) NOTE The reference sound pressure used in this part of ISO 13261 is 20 Pa (micropascals). 3.8 octave band band of sound covering a range
34、of frequencies such that the highest is twice the lowest NOTE The octave bands used in this part of ISO 13261 are those shown in table 1. 3.9 one-third-octave band band of sound covering a range of frequencies such that the highest is the cube root of two (approximately 1,26) times the lowest NOTE T
35、he one-third-octave bands used in this part of ISO 13261 are those shown in table 1. Table 1 Standard frequency bands Values in hertz Octave bandOne-third-octave band Lower frequency limit Centre* frequency Upper frequency limit Lower frequency limit Centre* frequency Upper frequency limit 4463*90 4
36、4 56 71 50* 63* 80* 56 71 90 90125180 90 112 140 100 125 160 112 140 180 180250355 180 224 280 200 250 315 224 280 355 355500710 355 450 560 400 500 630 450 560 710 7101 0001 400 710 900 1 120 800 1 000 1 250 900 1 120 1 400 1 4002 0002 800 1 400 1 800 2 240 1 600 2 000 2 500 1 800 2 240 2 800 2 800
37、4 0005 600 2 800 3 550 4 500 3 150 4 000 5 000 3 550 4 500 5 600 5 6008 00011 200 5 600 7 100 9 000 6 300 8 000 10 000 7 100 9 000 11 200 * The centre frequency is the geometric mean of the frequency limits. * These bands are considered to be optional. NOTE The frequencies in this table have been ro
38、unded off slightly for ordinary use. 3.10 hertz (Hz) unit of frequency in cycles per second 3.11 published rating statement of the assigned values of those performance characteristics, under stated rating conditions, by which air- conditioning equipment may be chosen to fit its application NOTE Thes
39、e values apply to all equipment of identical size and type (model) and nominal capacity produced by the same manufacturer for the specific temperature conditions for which the equipment is rated for cooling and/or heating capacities. Copyright International Organization for Standardization Provided
40、by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:26:25 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 13261-2:1998(E) ISO 4 3.11.1 standard rating rating based on tests performed at standard rating conditions 3.
41、11.2 application rating rating based on tests performed at other than standard rating conditions 4 Requirements for conducting sound tests 4.1 Testing requirements for equipment 4.1.1 Sound tests shall be conducted in accordance with the test methods (Grade 1 or Grade 2 as identified in ISO 12001) s
42、pecified in ISO 3742:1988, ISO 3743-1, ISO 3743-2, ISO 3744, ISO 3745, ISO 9614-1 and ISO 9614-2. (See table 2.) Table 2 Sound power ratings Methods and information International Octave-band sound power level dataOverall A-weighted sound power level data Standard 63 Hz Optional data 125 Hz to 4 kHz
43、Rating data 8 kHz Rating data Normal procedure Special procedure ISO 3742:1988See 4.3 ISO 3743-1*See 4.3 ISO 3743-2*See 4.3 ISO 3744See 4.3 ISO 3745See 4.3 ISO 9614-1See 4.3See 4.2See 5.4.1.2 ISO 9614-2See 4.3See 4.2See 5.4.1.2 * ISO 3743-1 and ISO 3743-2 are only to be used for testing small, porta
44、ble equipment. 4.1.2 High air speeds and adverse air streams causing turbulence may affect the sound measured by a microphone. These effects will tend to result in an overestimation of the sound power of the product. Thus, it is recommended that the air speed at the microphone should not exceed 2 m/
45、s. The error due to air streams may be checked by repeating the measurement at a larger distance from the product. If the resulting sound power levels at both measurement distances are within 1,0 dB, the air-stream effects are negligible. 4.2 Data to be taken 4.2.1 Sound power levels shall be determ
46、ined in decibels (ref. 1 pW) for the one-third-octave bands from 100 Hz to 10 000 Hz, or the full-octave bands from 125 Hz to 8 000 Hz, as listed in table 1. Sound power levels shall be determined in accordance with the specific International Standard on acoustics, listed in clause 2, which was used
47、 to conduct the test. 4.2.2 If testing is conducted in accordance with ISO 9614, data are to be reported only for frequencies up to and including 6 300 Hz. Data above 6 300 Hz can only be provided for information purposes when using ISO 9614 because the uncertainties are not defined above 6 300 Hz.
48、In addition, special con-sideration must be given to the determination of the overall A-weighted sound power level rating (see 5.4) using the procedures established in annex A. NOTE If additional information on sound power levels at 50 Hz, 63 Hz and 80 Hz one-third-octave bands or the 63 Hz octave band is to be optionally provided, it is recommended that the standard rating temperature conditions and the measurement methods in the applicabl