Ergonomics of the thermal environment - Estimation of thermal insulation and water vapour resistance of a clothing ensemble (ISO 9920:2007, Corrected version 2008-11-01)

ISO 9920:2007 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. It examines the influence of body movement and air penetration on the thermal insulation and water vapour resistance. It 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 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.

Ergnomie der thermischen Umgebung - Abschätzung der Wärmeisolation und des Verdunstungswiderstandes einer Bekleidungskombination (ISO 9920:2007, Korrigierte Fassung 2008-11-01)

Diese Internationale Norm legt Verfahren zur Abschätzung der thermischen Kennwerte (Widerstand gegen den Verlust an trockener Wärme und Verdunstungswiderstand) unter stationären Prüfbedingungen für eine Bekleidungskombination fest, die sich auf Werten für bekannte Kleidungsstücke, Bekleidungskombinationen und Textilien begründet. Sie behandelt den Einfluss von Körperbewegungen und des Luftdurchganges durch die Kleidung auf die Wärmeisolation und den Verdunstungswiderstand.
Diese Internationale Norm behandelt nicht
   andere Wirkungen der Bekleidung wie Wasseraufnahme, Pufferwirkung und Tragekomfort,
   den Einfluss von Regen und Schnee auf die thermischen Kennwerte,
   spezielle Schutzkleidung (wasser­ oder luftgekühlte Anzüge, beheizte Kleidung) und
die örtliche Wärmeisolation an verschiedenen Körperteilen und die Unbehaglichkeit infolge der Asymmetrie der Bekleidungskombination.

Ergonomie des ambiances thermiques - Détermination de l'isolement thermique et de la résistance à l'évaporation d'une tenue vestimentaire (ISO 9920:2007, Version corrigé 2008-11-01)

L'ISO 9920:2007 spécifie des méthodes pour la détermination des caractéristiques thermiques d'une tenue vestimentaire, dans des conditions d'équilibre, à partir des valeurs de pièces vestimentaires, de tenues et de textiles connus. L'influence des mouvements du corps et de la pénétration de l'air sur l'isolement thermique et sur la résistance à l'évaporation est examinée.
L'ISO 9920:2007 ne traite pas des autres effets des pièces vestimentaires, tels que l'adsorption d'eau, l'effet tampon, le confort au toucher, ne tient pas compte de l'influence de la pluie et de la neige sur les caractéristiques thermiques, n'est pas applicable aux tenues de protection spéciales (tenues refroidies par eau, tenues ventilées, vêtements chauffants), et ne traite pas d'isolements thermiques distincts sur différentes parties du corps, ni de l'inconfort dû à l'asymétrie d'une tenue vestimentaire.

Ergonomija toplotnega okolja - Ocenitev toplotne izolativnosti in odpornosti oblačil proti vodni pari (ISO 9920:2007, popravljena različica 2008-11-01)

Ta mednarodni standard določa metode za ocenitev toplotnih lastnosti (odpornost proti izgubi suhe toplote in izgubi toplote preko izhlapevanja) v ustaljenih pogojih za oblačila, osnovana na vrednostnih za že znane obleke, komplete in tekstilije. Preučuje vplive telesnega gibanja in prodor zraka na toplotno izolacijo in odpornosti proti vlagi.

General Information

Status
Published
Publication Date
02-Jun-2009
Withdrawal Date
30-Dec-2009
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
03-Jun-2009
Completion Date
03-Jun-2009

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SLOVENSKI STANDARD
01-junij-2010
Nadomešča:
SIST EN ISO 9920:2008
Ergonomija toplotnega okolja - Ocenitev toplotne izolativnosti in odpornosti
oblačil proti vodni pari (ISO 9920:2007, popravljena različica 2008-11-01)
Ergonomics of the thermal environment - Estimation of thermal insulation and water
vapour resistance of a clothing ensemble (ISO 9920:2007, Corrected version 2008-11-
01)
Ergnomie der thermischen Umgebung - Abschätzung der Wärmeisolation und des
Verdunstungswiderstandes einer Bekleidungskombination (ISO 9920:2007, Korrigierte
Fassung 2008-11-01)
Ergonomie des ambiances thermiques - Détermination de l'isolement thermique et de la
résistance à l'évaporation d'une tenue vestimentaire (ISO 9920:2007, Version corrigé
2008-11-01)
Ta slovenski standard je istoveten z: EN ISO 9920:2009
ICS:
13.180 Ergonomija Ergonomics
61.020 Oblačila Clothes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 9920
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2009
ICS 13.180; 61.020 Supersedes EN ISO 9920:2007
English Version
Ergonomics of the thermal environment - Estimation of thermal
insulation and water vapour resistance of a clothing ensemble
(ISO 9920:2007, Corrected version 2008-11-01)
Ergonomie des ambiances thermiques - Détermination de Ergnomie der thermischen Umgebung - Abschätzung der
l'isolement thermique et de la résistance à l'évaporation Wärmeisolation und des Verdunstungswiderstandes einer
d'une tenue vestimentaire (ISO 9920:2007, Version corrigé Bekleidungskombination (ISO 9920:2007, Korrigierte
2008-11-01) Fassung 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 Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national 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 Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9920:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .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 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 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 or 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, 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 has been approved by CEN as a EN ISO 9920:2009
without any modification.
INTERNATIONAL ISO
STANDARD 9920
Second edition
2007-06-01
Corrected version
2008-11-01
Ergonomics of the thermal
environment — Estimation of thermal
insulation and water vapour resistance of
a clothing ensemble
Ergonomie des ambiances thermiques — Détermination de l'isolement
thermique et de la résistance à l'évaporation d'une tenue vestimentaire

Reference number
ISO 9920:2007(E)
©
ISO 2007
ISO 9920:2007(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

©  ISO 2007
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 either ISO at the address below or
ISO's 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 copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2007 – All rights reserved

ISO 9920:2007(E)
Contents Page
Foreword. v
Introduction . vi
1 Scope . 1
2 Terms and definitions. 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 individual 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 boundary) 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 with 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 Relative 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 values 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 and 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
ISO 9920:2007(E)
Annex H (informative) Guidance on the determination of the covered body surface area. 100
Bibliography . 102

iv © ISO 2007 – All rights reserved

ISO 9920:2007(E)
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. 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 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. 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 document may be
...


SLOVENSKI STANDARD
01-junij-2010
1DGRPHãþD
SIST EN ISO 9920:2008
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REODþLOSURWLYRGQLSDUL ,62SRSUDYOMHQDUD]OLþLFD
Ergonomics of the thermal environment - Estimation of thermal insulation and water
vapour resistance of a clothing ensemble (ISO 9920:2007, Corrected version 2008-11-
01)
Ergnomie der thermischen Umgebung - Abschätzung der Wärmeisolation und des
Verdunstungswiderstandes einer Bekleidungskombination (ISO 9920:2007, Korrigierte
Fassung 2008-11-01)
Ergonomie des ambiances thermiques - Détermination de l'isolement thermique et de la
résistance à l'évaporation d'une tenue vestimentaire (ISO 9920:2007, Version corrigé
2008-11-01)
Ta slovenski standard je istoveten z: EN ISO 9920:2009
ICS:
13.180 Ergonomija Ergonomics
61.020 2EODþLOD Clothes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 9920
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2009
ICS 13.180; 61.020 Supersedes EN ISO 9920:2007
English Version
Ergonomics of the thermal environment - Estimation of thermal
insulation and water vapour resistance of a clothing ensemble
(ISO 9920:2007, Corrected version 2008-11-01)
Ergonomie des ambiances thermiques - Détermination de Ergnomie der thermischen Umgebung - Abschätzung der
l'isolement thermique et de la résistance à l'évaporation Wärmeisolation und des Verdunstungswiderstandes einer
d'une tenue vestimentaire (ISO 9920:2007, Version corrigé Bekleidungskombination (ISO 9920:2007, Korrigierte
2008-11-01) Fassung 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 Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national 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 Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9920:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .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 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 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 or 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, 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 has been approved by CEN as a EN ISO 9920:2009
without any modification.
INTERNATIONAL ISO
STANDARD 9920
Second edition
2007-06-01
Ergonomics of the thermal
environment — Estimation of thermal
insulation and water vapour resistance of
a clothing ensemble
Ergonomie des ambiances thermiques — Détermination de l'isolement
thermique et de la résistance à l'évaporation d'une tenue vestimentaire

Reference number
ISO 9920:2007(E)
©
ISO 2007
ISO 9920:2007(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

©  ISO 2007
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 either ISO at the address below or
ISO's 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 copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2007 – All rights reserved

ISO 9920:2007(E)
Contents Page
Foreword. v
Introduction . vi
1 Scope . 1
2 Terms and definitions. 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 individual 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 boundary) 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 with 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 Relative 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 values for individual garments. 45
Annex C (normative) Vapour permeability index values for clothing ensembles. 72
Annex D (informative) Measurement of thermal insulation and water vapour resistance of clothing
ensembles on a thermal manikin . 87
Annex E (informative) Measurement of thermal insulation and water vapour resistance of a
clothing ensemble on human subjects . 93
Annex F (informative) Different expressions for the thermal insulation of clothing. 95
Annex G (informative) Estimation of the heat exchanges for reflective clothing. 97
ISO 9920:2007(E)
Annex H (informative) Guidance on the determination of the covered body surface area. 99
Bibliography . 101

iv © ISO 2007 – All rights reserved

ISO 9920:2007(E)
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. 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 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. 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 document may be the subje
...

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