Journal of Home Economics of Japan
Online ISSN : 1884-7870
Print ISSN : 0449-9069
ISSN-L : 0449-9069
The Initial Maximum Value of Heat Flux (qmax) as an Objective Measure of Fabric Warm/Cool Feeling
Study on Heat Conduction Properties of Clothing Materials (Part 3)
Junko SENOOMorihiro YONEDAMasako NIWA
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1986 Volume 37 Issue 12 Pages 1049-1061

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Abstract
In this study, in the first place, the validity of the initial maximum value of heat flux, qmax, as an objective measure of warm/cool feeling when human skin touches on fabrics is confirmed by sensory test. Nextly, relations between qmax and basic mechanical properties for many kinds of fabrics of six uses are examined. As a result, fairly high correlations between qmax and thickness, weight, compressive properties are obtained.
Experiments to obtain qmax are carried out for various fabrics which differ in type of fiber, yarn structure and fabric structure under standard condition and wet condition. From the results of fabrics which have almost the same fabric construction and vary in fiber material, it is found that the behaviours of moisture regain vs. qmax are divided into three groups. It is remarkable that qmax of linen is higher and that of wool is lower. The warm feeling of wool and the cool feeling of linen can be explained from these results. However, the dependence of the behaviour of qmax of wet fabrics on fabric and yarn structures is not so strong as in the case of thermal conductivity reported in the previous paper.
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© The Japan Society of Home Economics
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