Simulation of the thermal effects of dissolved materials in human sweat

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Department of Mechanical Engineering-Engineering Mechanics


This paper outlines the basic structure of a simple thermal model that simulates an unclothed sweating man. It was developed to determine if the salt and other dissolved materials in human sweat accumulate on the skin to such an extent that evaporation is inhibited. Later experimental results concurred with theory that at thermal equilibrium the salt concentration and area of the sweat film increase with time. The area increases due to the decreasing vapor pressure of the sweat caused by the increasing salt concentration. Sweat film area is an important factor effecting human comfort. Human thermal reactions to some industrial environments were also simulated.

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Computers and Biomedical Research