A value q
max has been introduced as a measure of predicting cool-and-warm feeling of fabrics by Kawabata et al where the q
max is a peak value of the heat flux which flows out of a copper plate having finite amount of heat into the surface of fabric when the plate touches on the fabric surface.
In this paper, firstly, a theoretical interpretation of the meaning of q
max is presented by means of transient heat conduction analysis of homogeneous body and the characteristics of q
max is interpretated theoretically in relation to the test condition and thermal properties of test specimen.
Secondly, the heat conduction in human skin after that an outer body touches on it is analyzed. And it is concluded that there is a time lag between the time when an outer body touches on skin and the time when cool-and-warm feeling is detected at sensory spot in skin. The time lag agrees with the apparatus' response which was designed for obtaining q
maxThese results support the validity of q
max as a good measure of cool-and-warm feeling.
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