C-50 低湿度が人間に与える影響の調査研究(その5) : 生理反応からみた低湿度環境の許容値に関する研究

概要

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In order to investigate the permissible level of low relative humidity, we measured saccharin clearance time (SCT), frequency of blinking, blood pressure and transepidermal water loss (TEWL) as physiological responses. We asked subjects to judge thermal, dryness and comfort sensations as subjective responses using a rating scale. Sixteen non-smoking healthy male students were selected. The pre-room conditions were maintained at an air temperature (Ta) of 25℃ and a relative humidity (RH) of 50%. The test-room conditions were adjusted to provide a Ta of 25℃ and RH levels of 10%, 20%, 30%, 40% and 50%. Under 10%, 20%, 30% of RH, the eyes and skin became dry, and under 10%, 20% of RH the nasal mucous membrane also became dry as well as the eyes and skin. Subjects felt cold immediately after a change in RH while they had only a slight perception of dryness with a change of humidity.
社団法人空気調和・衛生工学会の論文
2005-07-25