The influence of posture upon conductive heat exchange.
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概要
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The purpose of this paper is to investigate the relationship between posture and conductive heat exchange in humans. The contacted surface area between the floor and human body was measured. Seven different postures were used for these measurements, including standing, sedentary, sitting upright, sitting with legs crossed, sitting with knees drawn up, sitting with legs stretched and lateral decubitus. There was no difference in the contacted surface area between the figures. These postures could be classified into the following three groups by a cluster analysis. In the first, conductive heat exchange may be negligible in estimating the total heat exchange. In the second, the conductive heat exchange should not be ignored. In the third, it is absolutely indispensable to take the conductive heat exchange into account. Even in floor seating, sitting upright posture could be placed in the first group, where the effects are negligible. Experiments were carried out to evaluate the effect of posture on the conductive heat exchange between the human body and the floor surface and to verify these groups. One male subject was exposed to the following conditions. The air temperature was set to 25, 28 and 31°C. The floor surface temperature was set to equal the air temperature and to 35°C. Conductive heat exchange, which was approximately 3% of the total heat exchange, did not significantly change between the standing and sitting upright posture. Therefore, it may be unnecessary to analyze total heat exchange in the sitting upright posture.
- 日本生気象学会の論文
日本生気象学会 | 論文
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