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A Study on Local Cooling of Garments with Ventilation Fans and Openings Placed at Different Torso Sites

Zhao, Mengmeng; Gao, Chuansi LU ; Wang, Faming LU ; Kuklane, Kalev LU ; Holmér, Ingvar LU and Li, Jun (2013) In International Journal of Industrial Ergonomics 43(3). p.232-237
Abstract (Swedish)
Abstract in Undetermined

The aim of the study was to examine the various design features of ventilated

garments on cooling performance. Five jackets with small ventilation units and

closable openings were designed. The ventilation units with a flow rate of 12 l/s were

placed at five different torso sites. They were examined on a sweating thermal

manikin in four clothing opening conditions in a warm environment

(Ta=Tmanikin=34 °C, RH=60 %, Va=0.4 m/s). Total torso cooling was increased by 137

to 251 %, and clothing total dynamic evaporative resistance was decreased by 43 to

69 %. Neither the ventilation location nor the opening design had a significant

... (More)
Abstract in Undetermined

The aim of the study was to examine the various design features of ventilated

garments on cooling performance. Five jackets with small ventilation units and

closable openings were designed. The ventilation units with a flow rate of 12 l/s were

placed at five different torso sites. They were examined on a sweating thermal

manikin in four clothing opening conditions in a warm environment

(Ta=Tmanikin=34 °C, RH=60 %, Va=0.4 m/s). Total torso cooling was increased by 137

to 251 %, and clothing total dynamic evaporative resistance was decreased by 43 to

69 %. Neither the ventilation location nor the opening design had a significant

difference on total torso cooling. The ventilation location had a significant difference

on localized intra-torso cooling, but not the opening design. When the ventilation

units were placed at the local zone where it was ventilated, that zone underwent the

highest cooling than other local zones. The study indicated that the ventilation units

should be placed at the region where it required the most evaporative cooling, e.g.

along the spine area and the lower back. The openings could be adjusted (closed or

opened) to make comfortable air pressure for the wearers but without making

significant difference on the whole torso cooling under this flow rate. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Local cooling, Ventilation, Opening, Evaporation
in
International Journal of Industrial Ergonomics
volume
43
issue
3
pages
232 - 237
publisher
Elsevier
external identifiers
  • wos:000318962100006
  • scopus:84876840879
ISSN
0169-8141
DOI
10.1016/j.ergon.2013.01.001
language
English
LU publication?
yes
id
f4a85e71-2920-4069-9308-a93182158ef6 (old id 2764504)
date added to LUP
2012-07-06 09:17:44
date last changed
2019-08-14 02:23:45
@article{f4a85e71-2920-4069-9308-a93182158ef6,
  abstract     = {<b>Abstract in Undetermined</b><br/><br>
The aim of the study was to examine the various design features of ventilated<br/><br>
garments on cooling performance. Five jackets with small ventilation units and<br/><br>
closable openings were designed. The ventilation units with a flow rate of 12 l/s were<br/><br>
placed at five different torso sites. They were examined on a sweating thermal<br/><br>
manikin in four clothing opening conditions in a warm environment<br/><br>
(Ta=Tmanikin=34 °C, RH=60 %, Va=0.4 m/s). Total torso cooling was increased by 137<br/><br>
to 251 %, and clothing total dynamic evaporative resistance was decreased by 43 to<br/><br>
69 %. Neither the ventilation location nor the opening design had a significant<br/><br>
difference on total torso cooling. The ventilation location had a significant difference<br/><br>
on localized intra-torso cooling, but not the opening design. When the ventilation<br/><br>
units were placed at the local zone where it was ventilated, that zone underwent the<br/><br>
highest cooling than other local zones. The study indicated that the ventilation units<br/><br>
should be placed at the region where it required the most evaporative cooling, e.g.<br/><br>
along the spine area and the lower back. The openings could be adjusted (closed or<br/><br>
opened) to make comfortable air pressure for the wearers but without making<br/><br>
significant difference on the whole torso cooling under this flow rate.},
  author       = {Zhao, Mengmeng and Gao, Chuansi and Wang, Faming and Kuklane, Kalev and Holmér, Ingvar and Li, Jun},
  issn         = {0169-8141},
  keyword      = {Local cooling,Ventilation,Opening,Evaporation},
  language     = {eng},
  number       = {3},
  pages        = {232--237},
  publisher    = {Elsevier},
  series       = {International Journal of Industrial Ergonomics},
  title        = {A Study on Local Cooling of Garments with Ventilation Fans and Openings Placed at Different Torso Sites},
  url          = {http://dx.doi.org/10.1016/j.ergon.2013.01.001},
  volume       = {43},
  year         = {2013},
}