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BS EN ISO 9920:2009

Current
Current

The latest, up-to-date edition.

Ergonomics of the thermal environment. Estimation of thermal insulation and water vapour resistance of a clothing ensemble
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-31-2010

Foreword
Introduction
1 Scope
2 Terms and definitions
3 Application of this International Standard
4 Estimation of thermal insulation of clothing ensemble
  based on tables and with values measured on a standing
  thermal manikin
5 Estimation of clothing area factor
6 Estimation of surface (or boundary) air layer insulation
7 Estimation of water vapour resistance
8 Influence of body movement and air movement on the
  thermal insulation and vapour resistance of a clothing
  ensemble
9 Other factors influencing clothing insulation
Annex A (normative) - Thermal insulation values for clothing
                      ensembles
Annex B (normative) - Thermal insulation values for individual
                      garments
Annex C (normative) - Vapour permeability index values for
                      clothing ensembles
Annex D (informative) - Measurement of thermal insulation and
                        water vapour resistance of clothing
                        ensembles on a thermal manikin
Annex E (informative) - Measurement of thermal insulation and
                        water vapour resistance of a clothing
                        ensemble on human subjects
Annex F (informative) - Different expressions for the thermal
                        insulation of clothing
Annex G (informative) - Estimation of the heat exchanges for
                        reflective clothing
Annex H (informative) - Guidance on the determination of the
                        covered body surface area
Bibliography

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.

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. 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 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.

Committee
PH/9
DevelopmentNote
Supersedes 91/41140 DC Renumbers and Supersedes BS ISO 9920 2003 version incorporates amendment 15269 to BS ISO 9920 (07/2004) Supersedes 04/30125320 DC. (09/2007)
DocumentType
Standard
Pages
114
PublisherName
British Standards Institution
Status
Current
Supersedes

EN 13537:2012 Requirements for sleeping bags
ISO 9237:1995 Textiles — Determination of the permeability of fabrics to air
ISO 15831:2004 Clothing — Physiological effects — Measurement of thermal insulation by means of a thermal manikin
ASTM F 1291 : 2016 : REDLINE Standard Test Method for Measuring the Thermal Insulation of Clothing Using a Heated Manikin
ISO 7726:1998 Ergonomics of the thermal environment Instruments for measuring physical quantities
ASTM F 2370 : 2016 : REDLINE Standard Test Method for Measuring the Evaporative Resistance of Clothing Using a Sweating Manikin
ISO/TR 11079:1993 Evaluation of cold environments — Determination of required clothing insulation (IREQ)
ISO 7933:2004 Ergonomics of the thermal environment — Analytical determination and interpretation of heat stress using calculation of the predicted heat strain
ISO 7730:2005 Ergonomics of the thermal environment — Analytical determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria
ASTM D 1518 : 2014 : REDLINE Standard Test Method for Thermal Resistance of Batting Systems Using a Hot Plate
ISO 9886:2004 Ergonomics Evaluation of thermal strain by physiological measurements
ISO 13731:2001 Ergonomics of the thermal environment Vocabulary and symbols
ASTM D 737 : 2004 Test Method for Air Permeability of Textile Fabrics

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