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Author Fukazawa, Takako ♦ Lee, Gung ♦ Matsuoka, Takeshi ♦ Ka, Kiyotsugu ♦ Tochihara, Yutaka
Source SpringerLink
Content type Text
Publisher Springer-Verlag
File Format PDF
Copyright Year ©2004
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Life sciences; biology
Subject Keyword Sweating thermal manikin ♦ Heat and water vapour transfer ♦ Thermal comfort ♦ Condensation ♦ Skin wettedness
Abstract A moveable sweating thermal manikin has recently been developed. Thermal and water-vapour resistances of three kinds of cold-protective clothing ensembles, laminated with polytetrafluoroethylene, polyurethane and without a laminate were measured, with the aid of the manikin in a cold environment of 5°C with a relative humidity of 70% and an air velocity of around 1.5 m s−1. Two sweating rates of 65 and 130 g m−2 h−1 were employed. Supplied heat fluxes in both of the sweat rates ranged from 350 W m−2 to 400 W m−2. To maintain a comfortable condition, the skin wettedness (w) (mean weighted value) had to be kept at ≤0.6. The measurements obtained from the manikin when testing the three ensembles were w=0.3 (approximately) for the low sweat rate and w≥0.6 for the high sweat rate, irrespective of the property differences among the ensembles. In addition, the condensation in the ensembles in comparison with those calculated from an analytical equation is discussed. Condensation mass fluxes in the ensembles obtained byexperiment and those from the calculation agreed sufficiently well. Thus, distribution of the condensation in the ensembles was estimated using the equation.
ISSN 14396319
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2004-06-23
Publisher Place Berlin/Heidelberg
e-ISSN 14396327
Journal European Journal of Applied Physiology
Volume Number 92
Issue Number 6
Page Count 4
Starting Page 645
Ending Page 648


Source: SpringerLink