1、BS EN ISO9920:2009ICS 13.180; 61.020NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDErgonomics of thethermal environment Estimation ofthermal insulationand water vapourresistance of aclothing ensemble (ISO9920:2007, Correctedversion 2008-11-01)Licensed Copy: Wan
2、g Bin, ISO/EXCHANGE CHINA STANDARDS, 31/03/2010 03:43, Uncontrolled Copy, (c) BSIThis British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January2010 BSI 2010ISBN 978 0 580 67118 0Amendments/corrigenda issued since publicationDate CommentsBS EN ISO
3、 9920:2009National forewordThis British Standard is the UK implementation of EN ISO 9920:2009. It is identical to ISO 9920:2007, corrected version 2008-11-01. It supersedes BS EN ISO 9920:2007 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PH/9/1, The
4、rmal environments.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 British Standard cannot con
5、fer immunity from legal obligations.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 31/03/2010 03:43, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 9920June 2009ICS 13.180; 61.020 Supersedes EN ISO 9920:2007 English VersionErgonomics of the thermal environmen
6、t - Estimation of thermalinsulation and water vapour resistance of a clothing ensemble(ISO 9920:2007, Corrected version 2008-11-01)Ergonomie des ambiances thermiques - Dtermination delisolement thermique et de la rsistance lvaporationdune tenue vestimentaire (ISO 9920:2007, Version corrig2008-11-01)
7、Ergnomie der thermischen Umgebung - Abschtzung derWrmeisolation und des Verdunstungswiderstandes einerBekleidungskombination (ISO 9920:2007, KorrigierteFassung 2008-11-01)This European Standard was approved by CEN on 16 May 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulatio
8、ns which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This Europea
9、n Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national
10、 standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United
11、 Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 9920:2009: ELice
12、nsed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 31/03/2010 03:43, Uncontrolled Copy, (c) BSIBS EN ISO 9920:2009EN ISO 9920:2009 (E) 3 Foreword The text of ISO 9920:2007, corrected version 2008-11-01 has been prepared by Technical Committee ISO/TC 159 “Ergonomics” of the International Organization
13、 for Standardization (ISO) and has been taken over as EN ISO 9920:2009 by Technical Committee CEN/TC 122 “Ergonomics” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the
14、 latest by December 2009, and conflicting national standards shall be withdrawn at the latest by December 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any o
15、r all such patent rights. This document supersedes EN ISO 9920:2007. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia,
16、 Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 9920:2007, corrected version 2008-11-01
17、 has been approved by CEN as a EN ISO 9920:2009 without any modification. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 31/03/2010 03:43, Uncontrolled Copy, (c) BSIISO 9920:2007(E) ISO 2007 All rights reserved iiiContents Page Foreword. v Introduction . vi 1 Scope . 1 2 Terms and definition
18、s. 1 3 Application of this International Standard . 5 4 Estimation of thermal insulation of clothing ensemble based on tables and with values measured on a standing thermal manikin 7 4.1 General. 7 4.2 Insulation values of complete ensembles 8 4.3 Ensemble thermal insulation values based on individu
19、al garments 8 4.4 Complete ensemble insulation corrected for small differences in composition . 8 4.5 Calculation of thermal insulation for clothing ensembles . 9 4.6 Calculation of thermal insulation for individual garments. 9 5 Estimation of clothing area factor. 10 6 Estimation of surface (or bou
20、ndary) air layer insulation 10 7 Estimation of water vapour resistance. 12 7.1 General. 12 7.2 Estimation of vapour resistance of clothing ensembles based on tables with values measured on standing thermal manikin. 12 7.3 Estimation of vapour resistance of clothing ensemble based on its relation wit
21、h dry heat resistance 12 8 Influence of body movement and air movement on the thermal insulation and vapour resistance of a clothing ensemble 13 8.1 General. 13 8.2 Correction of clothing insulation 13 8.3 Correction of clothing vapour resistance 18 8.4 Activities other than walking . 20 8.5 Relativ
22、e air velocity 20 9 Other factors influencing clothing insulation 22 9.1 General. 22 9.2 Posture. 22 9.3 Effect of seats . 22 9.4 Effect of pressure . 22 9.5 Wetting. 22 9.6 Washing . 22 Annex A (normative) Thermal insulation values for clothing ensembles 23 Annex B (normative) Thermal insulation va
23、lues for individual garments 46 Annex C (normative) Vapour permeability index values for clothing ensembles. 73 Annex D (informative) Measurement of thermal insulation and water vapour resistance of clothing ensembles on a thermal manikin 88 Annex E (informative) Measurement of thermal insulation an
24、d water vapour resistance of a clothing ensemble on human subjects 94 Annex F (informative) Different expressions for the thermal insulation of clothing. 96 Annex G (informative) Estimation of the heat exchanges for reflective clothing 98 BS EN ISO 9920:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHIN
25、A STANDARDS, 31/03/2010 03:43, Uncontrolled Copy, (c) BSIISO 9920:2007(E) iv ISO 2007 All rights reservedAnnex H (informative) Guidance on the determination of the covered body surface area. 100 Bibliography . 102 BS EN ISO 9920:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 31/03/2010 0
26、3:43, Uncontrolled Copy, (c) BSIISO 9920:2007(E) ISO 2007 All rights reserved vForeword 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 I
27、SO technical committees. Each 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
28、closely with the International Electrotechnical Commission (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.
29、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 casting a vote. Attention is drawn to the possibility that some of the elements of this d
30、ocument may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 9920 was prepared by Technical Committee ISO/TC 159, Ergonomics, Subcommittee SC 5, Ergonomics of the physical environment. This second edition cancels and replaces the f
31、irst edition (ISO 9920:1995), which has been technically revised. It includes major changes to the sections on clothing vapour resistance as well as those dealing with the effects of air movement and body motion on clothing insulation and vapour resistance. This corrected version of ISO 9920:2007 in
32、corporates the following corrections. A value and a symbol missing from Equation (38) have been reinstated. In Equation (15), the multiplication symbol has been substituted for an (incorrect) asterisk. In Figure A.1, traditional Korean garments erroneously captioned “China” and “Sokchina” have been
33、corrected to read Chima and Sokchima. In Equation (F.8), the subscript of the second representation of “Icl” has been changed to Icli. In the description of symbol H given with Equation (F.1), the minus sign missing from the superscript attached to the unit Wm2 has been inserted. “Mean skin temperat
34、ure”, given as the description for clt with Equation (G.6), has been corrected to “mean outer clothing surface temperature”. In a number of instances, “weight” has been changed to the accepted ISO term, mass. Values in Table A.2, No. 134 for Icl andIT have been corrected. Introductory text similar t
35、o that present in the first edition has been reinstated in Annex A, and a new introductory text has been added to Annex C. Some minor editorial corrections and additions have been made. BS EN ISO 9920:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 31/03/2010 03:43, Uncontrolled Copy, (c)
36、 BSIISO 9920:2007(E) vi ISO 2007 All rights reservedIntroduction This International Standard is one of a series of International Standards intended for use in the study of thermal environments. It is a basic document for evaluation of the thermal characteristics of a clothing ensemble (thermal insul
37、ation and water vapour resistance). It is necessary to know these values when evaluating the thermal stress or degree of comfort provided by the physical environment according to standardized methods. The thermal characteristics determined in this International Standard are values for steady-state c
38、onditions. Properties like “buffering”, adsorption of water and similar are not dealt with. The emphasis in this International Standard is on the estimation of the thermal characteristics. The heat and vapour resistance may also be measured directly, and this is discussed in the annexes. This Intern
39、ational Standard does not deal with the local thermal insulation on different body parts, nor the discomfort due to a non-uniform distribution of the clothing on the body. Mans thermal balance in neutral, cold and warm environments is influenced by the clothing worn. For evaluating the thermal stres
40、s on human beings in the cold (IREQ, see ISO/TR 11079, insulation index), neutral environments (PMV-PPD, see ISO 7730, indices) and the heat (predicted heat strain, see ISO 7933, index), it is necessary to know the thermal characteristics of the clothing ensemble, i.e. the thermal insulation and the
41、 water vapour resistance. BS EN ISO 9920:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 31/03/2010 03:43, Uncontrolled Copy, (c) BSIINTERNATIONAL STANDARD ISO 9920:2007(E) ISO 2007 All rights reserved 1Ergonomics of the thermal environment Estimation of thermal insulation and water vapou
42、r resistance of a clothing ensemble 1 Scope This International Standard specifies methods for estimating the thermal characteristics (resistance to dry heat loss and evaporative heat loss) in steady-state conditions for a clothing ensemble based on values for known garments, ensembles and textiles.
43、It examines the influence of body movement and air penetration on the thermal insulation and water vapour resistance. This International Standard does not deal with other effects of clothing, such as adsorption of water, buffering or tactile comfort, take into account the influence of rain and snow
44、on the thermal characteristics, consider special protective clothing (water-cooled suits, ventilated suits, heated clothing), or deal with the separate insulation on different parts of the body and discomfort due to the asymmetry of a clothing ensemble. 2 Terms and definitions For the purposes of th
45、is document, the following terms and definitions apply. 2.1 thermal insulation I resistance to dry heat loss between two surfaces, expressed in square metres Kelvin per watt (m2 K W1) NOTE 1 In this International Standard it is considered as the equivalent uniform thermal resistance, or thermal insu
46、lation, on a human body. This is the clothing heat resistance (thermal insulation) that, when uniformly covering the whole body surface (including hands, face, etc.), would result in the same heat loss as the actual, possibly non-uniform, clothing heat resistance. This heat resistance is the quotien
47、t of the temperature gradient between the surfaces (the driving force) over the dry heat loss per unit of body surface area (the flux): temperature gradientheat loss per unit of body surfaceareaI = (1) For the human body, this resistance can be divided into specific layers, as illustrated in Figure
48、1 (see also Annex F). NOTE 2 Because of the special definition of thermal insulation in this International Standard, it is usually expressed in clo, the unit of thermal insulation of clothing. Although it can be converted into SI units in similar fashion to the thermal insulation of, for example, te
49、xtile samples symbol: Rct; 1 clo = 0,155 (m2 K W1), the meaning is not the same. BS EN ISO 9920:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 31/03/2010 03:43, Uncontrolled Copy, (c) BSIISO 9920:2007(E) 2 ISO 2007 All rights reserved2.1.1 total insulation IT thermal insulation from the body surface to the environment (including all clothing, enclosed air layers and boundary air layer) under reference conditions, static See Figure 1. NOTE Based on Equation (1), it is expressed as: sk oTttIH
