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Initial, transient and steady state evaporative resistance of impermeable protective clothing

Gao, Chuansi LU and Holmér, Ingvar LU (2006) The 6th International Thermal Manikin and Modeling Meeting (6I3M) In [Host publication title missing] p.253-261
Abstract
The measured water vapour resistances of clothing ensembles differ among laboratories particularly for impermeable clothing. Due to the moisture transfer in the clothing ensemble, evaporative heat losses in initial, transient and steady state phases are different. The purpose of this study was to investigate moisture absorption inside underwear and outer layer as a function of time, to quantify the difference of water vapour resistance of protective clothing (impermeable outer layer and cotton underwear) in initial, transient and steady state. Manikin Tore was used by wearing wet ‘skin’ to simulate sweating. The evaporative resistance is found to be more than two times higher in the initial phase than that in the saturation phase. The... (More)
The measured water vapour resistances of clothing ensembles differ among laboratories particularly for impermeable clothing. Due to the moisture transfer in the clothing ensemble, evaporative heat losses in initial, transient and steady state phases are different. The purpose of this study was to investigate moisture absorption inside underwear and outer layer as a function of time, to quantify the difference of water vapour resistance of protective clothing (impermeable outer layer and cotton underwear) in initial, transient and steady state. Manikin Tore was used by wearing wet ‘skin’ to simulate sweating. The evaporative resistance is found to be more than two times higher in the initial phase than that in the saturation phase. The moisture content is gained exponentially in the clothing ensemble. On the contrary, mass loss directly from the wet skin decreases exponentially. These may partly explain the poor reproducibility while measuring the evaporative resistance of impermeable clothing for a short period. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
water vapour resistances, Manikin Tore, Clothing ensemble, climatic chamber, sweating test
in
[Host publication title missing]
editor
Fan, Jintu
pages
9 pages
publisher
The Hong Kong Polytechnic University
conference name
The 6th International Thermal Manikin and Modeling Meeting (6I3M)
external identifiers
  • WOS:000245322500029
ISBN
962-367-534-8
language
English
LU publication?
yes
id
f7da5b6e-eff9-471b-adb6-37022bb7027f (old id 632066)
date added to LUP
2007-12-12 15:20:04
date last changed
2016-04-16 08:24:16
@misc{f7da5b6e-eff9-471b-adb6-37022bb7027f,
  abstract     = {The measured water vapour resistances of clothing ensembles differ among laboratories particularly for impermeable clothing. Due to the moisture transfer in the clothing ensemble, evaporative heat losses in initial, transient and steady state phases are different. The purpose of this study was to investigate moisture absorption inside underwear and outer layer as a function of time, to quantify the difference of water vapour resistance of protective clothing (impermeable outer layer and cotton underwear) in initial, transient and steady state. Manikin Tore was used by wearing wet ‘skin’ to simulate sweating. The evaporative resistance is found to be more than two times higher in the initial phase than that in the saturation phase. The moisture content is gained exponentially in the clothing ensemble. On the contrary, mass loss directly from the wet skin decreases exponentially. These may partly explain the poor reproducibility while measuring the evaporative resistance of impermeable clothing for a short period.},
  author       = {Gao, Chuansi and Holmér, Ingvar},
  editor       = {Fan, Jintu},
  isbn         = {962-367-534-8},
  keyword      = {water vapour resistances,Manikin Tore,Clothing ensemble,climatic chamber,sweating test},
  language     = {eng},
  pages        = {253--261},
  publisher    = {ARRAY(0x92aa918)},
  series       = {[Host publication title missing]},
  title        = {Initial, transient and steady state evaporative resistance of impermeable protective clothing},
  year         = {2006},
}