Influence of local cooling in hot environment on human physiological and psychological responses

Part 2 Analysis on fluctuation of temperature regulation system of human body caused by cooling buttock

Abstract

In order to evaluate the influence of partial cooling of the human body in a hot environment, we analyzed the results of a subject experiment in which the subject was exposed to a hot environment, sat in a cooling chair for 20 minutes, and then returned to the hot environment again, using a human body thermal model. By combining with the heat transfer model inside the chair, the tendencies of the measured buttock skin temperature and forearm skin temperature for both the cases of cooled and uncooled chairs were reproduced. The analytical model was used to predict the magnitude and the duration of influence of cooling the buttock by mean skin and core temperatures, and the blood flow and perspiration rates.