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Validation of standard ASTM F2732 and comparison with ISO 11079 with respect to comfort temperature ratings for cold protective clothing

Gao, Chuansi LU ; Lin, Li-Yen; Halder, Amitava LU ; Kuklane, Kalev LU and Holmér, Ingvar LU (2015) In Applied Ergonomics 46(Online 17 July 2014). p.44-53
Abstract
American standard ASTM F2732 estimates the lowest environmental temperature for thermal comfort for cold weather protective clothing. International standard ISO 11079 serves the same purpose but expresses cold stress in terms of required clothing insulation for a given cold climate. The objective of this study was to validate and compare the temperature ratings using human subject tests at two levels of metabolic rates (2 and 4 MET corresponding to 116.4 and 232.8 W/m(2)). Nine young and healthy male subjects participated in the cold exposure at 3.4 and -30.6 °C. The results showed that both standards predict similar temperature ratings for an intrinsic clothing insulation of 1.89 clo and for 2 MET activity. The predicted temperature... (More)
American standard ASTM F2732 estimates the lowest environmental temperature for thermal comfort for cold weather protective clothing. International standard ISO 11079 serves the same purpose but expresses cold stress in terms of required clothing insulation for a given cold climate. The objective of this study was to validate and compare the temperature ratings using human subject tests at two levels of metabolic rates (2 and 4 MET corresponding to 116.4 and 232.8 W/m(2)). Nine young and healthy male subjects participated in the cold exposure at 3.4 and -30.6 °C. The results showed that both standards predict similar temperature ratings for an intrinsic clothing insulation of 1.89 clo and for 2 MET activity. The predicted temperature rating for 2 MET activity is consistent with test subjects' thermophysiological responses, perceived thermal sensation and thermal comfort. For 4 MET activity, however, the whole body responses were on the cold side, particularly the responses of the extremities. ASTM F2732 is also limited due to its omission and simplification of three climatic variables (air velocity, radiant temperature and relative humidity) and exposure time in the cold which are of practical importance. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Cold, protective clothing, Metabolic rate, Thermal comfort
in
Applied Ergonomics
volume
46
issue
Online 17 July 2014
pages
44 - 53
publisher
Elsevier
external identifiers
  • pmid:25042791
  • wos:000347736900006
  • scopus:84908206135
ISSN
1872-9126
DOI
10.1016/j.apergo.2014.07.002
language
English
LU publication?
yes
id
c0f9f26c-271f-4dc7-8678-a8c6ee853264 (old id 4581760)
alternative location
http://authors.elsevier.com/a/1Pn~rrfpAEdy
date added to LUP
2014-09-04 08:50:30
date last changed
2017-01-15 03:06:43
@article{c0f9f26c-271f-4dc7-8678-a8c6ee853264,
  abstract     = {American standard ASTM F2732 estimates the lowest environmental temperature for thermal comfort for cold weather protective clothing. International standard ISO 11079 serves the same purpose but expresses cold stress in terms of required clothing insulation for a given cold climate. The objective of this study was to validate and compare the temperature ratings using human subject tests at two levels of metabolic rates (2 and 4 MET corresponding to 116.4 and 232.8 W/m(2)). Nine young and healthy male subjects participated in the cold exposure at 3.4 and -30.6 °C. The results showed that both standards predict similar temperature ratings for an intrinsic clothing insulation of 1.89 clo and for 2 MET activity. The predicted temperature rating for 2 MET activity is consistent with test subjects' thermophysiological responses, perceived thermal sensation and thermal comfort. For 4 MET activity, however, the whole body responses were on the cold side, particularly the responses of the extremities. ASTM F2732 is also limited due to its omission and simplification of three climatic variables (air velocity, radiant temperature and relative humidity) and exposure time in the cold which are of practical importance.},
  author       = {Gao, Chuansi and Lin, Li-Yen and Halder, Amitava and Kuklane, Kalev and Holmér, Ingvar},
  issn         = {1872-9126},
  keyword      = {Cold,protective clothing,Metabolic rate,Thermal comfort},
  language     = {eng},
  number       = {Online 17 July 2014},
  pages        = {44--53},
  publisher    = {Elsevier},
  series       = {Applied Ergonomics},
  title        = {Validation of standard ASTM F2732 and comparison with ISO 11079 with respect to comfort temperature ratings for cold protective clothing},
  url          = {http://dx.doi.org/10.1016/j.apergo.2014.07.002},
  volume       = {46},
  year         = {2015},
}