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Effect of temperature difference between manikin and wet fabric skin surfaces on clothing evaporative resistance: how much error is there?

Wang, Faming LU ; Kuklane, Kalev LU ; Gao, Chuansi LU and Holmér, Ingvar LU (2012) In International Journal of Biometeorology 56. p.177-182
Abstract
Clothing evaporative resistance is one of the inherent factors that impede heat exchange by sweating evaporation. It is widely used as a basic input in physiological heat strain models. Previous studies showed a large variability in clothing evaporative resistance both at intra-laboratory and inter-laboratory testing. The errors in evaporative resistance may cause severe problems in the determination of heat stress level of the wearers. In this paper, the effect of temperature difference between the manikin nude surface and wet textile skin surface on clothing evaporative resistance was investigated by both theoretical analysis and thermal manikin measurements. It was found that the temperature difference between the skin surface and the... (More)
Clothing evaporative resistance is one of the inherent factors that impede heat exchange by sweating evaporation. It is widely used as a basic input in physiological heat strain models. Previous studies showed a large variability in clothing evaporative resistance both at intra-laboratory and inter-laboratory testing. The errors in evaporative resistance may cause severe problems in the determination of heat stress level of the wearers. In this paper, the effect of temperature difference between the manikin nude surface and wet textile skin surface on clothing evaporative resistance was investigated by both theoretical analysis and thermal manikin measurements. It was found that the temperature difference between the skin surface and the manikin nude surface could lead to an error of up to 35.9% in evaporative resistance of the boundary air layer. Similarly, this temperature difference could also introduce an error of up to 23.7% in the real clothing total evaporative resistance (R ( et_real ) < 0.1287 kPa m(2)/W). Finally, it is evident that one major error in the calculation of evaporative resistance comes from the use of the manikin surface temperature instead of the wet textile fabric skin temperature. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Heat stress, Thermal manikin, Thermoregulatory model, Wet fabric skin temperature
in
International Journal of Biometeorology
volume
56
pages
177 - 182
publisher
Springer
external identifiers
  • wos:000298393800018
  • pmid:21318453
  • scopus:84155182818
ISSN
1432-1254
DOI
10.1007/s00484-011-0411-z
language
English
LU publication?
yes
id
9fb8a9f3-d9c4-45ca-8e05-2b71b64ff584 (old id 1831877)
date added to LUP
2011-03-07 13:58:20
date last changed
2017-11-05 03:59:39
@article{9fb8a9f3-d9c4-45ca-8e05-2b71b64ff584,
  abstract     = {Clothing evaporative resistance is one of the inherent factors that impede heat exchange by sweating evaporation. It is widely used as a basic input in physiological heat strain models. Previous studies showed a large variability in clothing evaporative resistance both at intra-laboratory and inter-laboratory testing. The errors in evaporative resistance may cause severe problems in the determination of heat stress level of the wearers. In this paper, the effect of temperature difference between the manikin nude surface and wet textile skin surface on clothing evaporative resistance was investigated by both theoretical analysis and thermal manikin measurements. It was found that the temperature difference between the skin surface and the manikin nude surface could lead to an error of up to 35.9% in evaporative resistance of the boundary air layer. Similarly, this temperature difference could also introduce an error of up to 23.7% in the real clothing total evaporative resistance (R ( et_real ) &lt; 0.1287 kPa m(2)/W). Finally, it is evident that one major error in the calculation of evaporative resistance comes from the use of the manikin surface temperature instead of the wet textile fabric skin temperature.},
  author       = {Wang, Faming and Kuklane, Kalev and Gao, Chuansi and Holmér, Ingvar},
  issn         = {1432-1254},
  keyword      = {Heat stress,Thermal manikin,Thermoregulatory model,Wet fabric skin temperature},
  language     = {eng},
  pages        = {177--182},
  publisher    = {Springer},
  series       = {International Journal of Biometeorology},
  title        = {Effect of temperature difference between manikin and wet fabric skin surfaces on clothing evaporative resistance: how much error is there?},
  url          = {http://dx.doi.org/10.1007/s00484-011-0411-z},
  volume       = {56},
  year         = {2012},
}