Local thermal unpleasantness and discomfort prediction in the vicinity of thermoneutrality

European Journal of Applied Physiology
N PellerinV Candas

Abstract

This work emphasizes a better understanding of the origin of human thermal discomfort under heterogeneous but steady environments, in subjects in the vicinity of physiological and sensory thermoneutrality. The knowledge of skin temperatures allows a psychophysiological study aiming at linking the body thermal state (local and global) to thermal sensation (perceptive and affective judgements). By using two driving simulators, 345 subjects were exposed to different thermal environments, modulated by factors such as the air distribution in the automotive cockpit or the clothing insulation (winter or summer). This work shows that consideration of the local thermal state is essential for the evaluation of thermal comfort in the case of non-uniform environments. Our experimental conditions point out that the overall sensation of discomfort is quantitative, with local unpleasantness needing to be felt for a certain number of body surfaces. A local origin is suggested for cold discomfort, in opposition to the global characteristics of warm discomfort.

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Citations

Sep 21, 2005·European Journal of Applied Physiology·D A NelsonP A Mason
Jun 8, 2013·Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine·Jonas AléxBritt-Inger Saveman
Oct 3, 2014·Proceedings. Biological Sciences·Jana C VamosiSusanne S Renner
Feb 15, 2013·Proceedings. Biological Sciences·Roberto SáyagoJesus Ma Bastida
May 7, 2015·Scandinavian Journal of Medicine & Science in Sports·A D Flouris, Z J Schlader

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