The Study On The Measurement Of Insensible Perspiration On Regional Part Of Human Body

The method that was used to measure the amount of insensible perspiration on regional part of human body is relatively completed and asked for a more precise of experimental equipment. The principle of the methods is based on the open-chamber method and two of closed-chamber methods: condenser-chamber method and unventilated-chamber method. A new method called mass difference method was put forward to measure the amount of insensible perspiration on regional part of human body. With the new method, the insensible perspiration rate of the palms and front arms of 10 female subjects were measured when the environmental temperature was 25? and relative humidity was 50% and the walking speed on a treadmill was 0m/s(0mi/h), 0.68m/s(1.5mi/h),1.35m/s(3mi/h) respectively; the insensible perspiration of the palms, front arms, breasts and backs of 10 male subjects were measured when the environmental temperature was 25?,22?respectively and relative humidity was 50% and the walking speed on a treadmill was 0m/s(0mi/h), 0.68m/s(1.5mi/h),1.35m/s(3mi/h) respectively. The experimental results were analyzed by the paired t-test method. And it found that both environmental temperature and activity intensity had a significant effect on the insensible perspiration rate on regional part of human body, that was the higher the environmental temperature and the more intense activity intensity were, the bigger the insensible perspiration rate on regional part of human body was.When the environmental temperature was 25? and walking speed was 0m/s, the insensible perspiration rate on hands of 10 male subjects was 38.9 ~ 74.6g/(m2h) and the average was 53.4g/(m2h); on front arms it was 7.2~23.5 g/(m2h) and the average was 12.5 g/(m2h); on breasts it was 5.3~9.3 g/(m2h)and the average was 6.7g/(m2h); on backs it was 6.2~8.9 g/(m2h) and the average was 7.1g/(m2h).And at the same situation, the insensible perspiration rate on hands of 10 female subjects was 22.3~66.6g/(m2h) and the average was 45.6g/(m2h); on front arms it was 14.3~31.3g/(m2h) and the average was 18.9g/(m2h).When the environmental temperature was 25? and walking speed was 0.68m/s, the insensible perspiration rate on hands of 10 male subjects was 45.4 ~ 99.3g/(m2h) and the average was 76.1g/(m2h); on front arms it was 9.7~25.2g/(m2h) and the average was 16.7g/(m2h); on breasts it was 5.3~25.3g/(m2h)and the average was 12.6g/(m2h); on backs it was 7.2~51.3g/(m2h) and the average was 12.6g/(m2h).And at the same situation, the insensible perspiration rate on hands of 10 female subjects was 34.2~94.3g/(m2h) and the average was 62.4g/(m2h); on front arms it was 20.7~34.2g/(m2h) and the average was 25.8g/(m2h).When the environmental temperature was 25? and walking speed was 1.35m/s, the insensible perspiration rate on hands of 10 male subjects was 53.5~128.3g/(m2h) and the average was 87.5 g/(m2h); on front arms it was 13.1~78.8 g/(m2h) and the average was 30.2g/(m2h); on breasts it was 8.1~53.6g/(m2h)and the average was 26.1g/(m2h); on backs it was 8.3 ~60.7 g/(m2h) and the average was 26.4g/(m2h).And at the same situation, the insensible perspiration rate on hands of 10 female subjects was 53.5~111.6g/(m2h) and the average was 87.0 g/(m2h); on front arms it was 23.4~65.9g/(m2h) and the average was 40.1g/(m2h).When the environmental temperature was 22? and walking speed was 0m/s, the insensible perspiration rate on hands of 10 male subjects was 27.0 ~ 69.4g/(m2h) and the average was 46.4g/(m2h); on front arms it was 6.1~12.0g/(m2h) and the average was 8.5g/(m2h); on breasts it was 4.3~7.9g/(m2h)and the average was 6.3g/(m2h); on backs it was 4.9~7.5 g/(m2h) and the average was 6.1g/(m2h). When the environmental temperature was 22? and walking speed was 0.68m/s, the insensible perspiration rate on hands of 10 male subjects was 34.4~83.8g/(m2h) and the average was 61.0g/(m2h); on front arms it was 6.6 ~ 16.4 g/(m2h) and the average was 12.2g/(m2h); on breasts it was 5.0~8.8 g/(m2h)and the average was 7.0g/(m2h); on backs it was 5.1~8.1 g/(m2h) and the average was 7.1g/(m2h).When the environmental temperature was 22? and walking speed was 1.35m/s, the insensible perspiration rate on hands of 10 male subjects was 38.7~94.9g/(m2h) and the average was 67.0g/(m2h); on front arms it was 7.4~33.5 g/(m2h) and the average was 16.0g/(m2h); on breasts it was 5.6~39.2g/(m2h)and the average was 10.9g/(m2h); on backs it was 6.1~44.9g/(m2h) and the average was 11.8g/(m2h).The study on the measurement of insensible perspiration on regional part of human body provided the basic physiology data for the evaluation of heat-moisture comfort. Also it had an important significance for mending the structure of functional clothes, completing the data of the insensible perspiration of thermal manikin and evaluating the skin health of the regional burns or diseased skin.