Alber-Wallerström B, Holmér I
Eur J Appl Physiol Occup Physiol. 1985;54(5):480-7. doi: 10.1007/BF00422956.
A method is devised where evaporation and dripping sweat rates can be continuously determined during work. 6 unacclimatized men performed work on a bicycle ergometer at 3 different workloads and in 3 humidities. Ambient temperatures were always equal to mean skin temperatures, thus eliminating all sensible heat transfer. Evaporation rates ranged between 6.8 and 11.2 g X min-1. Rates of dripping sweat ranged from a mean of 2.2 to 10.4 g X min-1. One subject dripped 20.3 g X min-1 in condition H3 (70% RH, 100 W). The fully wet skin in condition H3 corresponded to an evaporative heat transfer coefficient of 99 W X m-2 kPa. Efficiency of sweating, defined as the ratio between secreted and evaporated sweat, ranged from 87 (50% RH, 50 W) to 51% (70% RH, 100 W). Corresponding values of wettedness were 0.56 and 1.0. Efficiency fell to 51% for fully wet skin (H3), and in some subjects the efficiency values were remarkably low. One subject displayed an efficiency of 31% in condition H3. The reduction in efficiency at a given level of wettedness was higher than previously reported.
设计了一种方法，可以在工作过程中连续测定蒸发汗率和滴汗率。6名未适应环境的男性在自行车测力计上以3种不同的工作量和3种湿度进行工作。环境温度始终等于平均皮肤温度，从而消除了所有显热传递。蒸发率在6.8至11.2克×分钟-1之间。滴汗率平均在2.2至10.4克×分钟-1之间。一名受试者在H3条件（70%相对湿度，100瓦）下滴汗20.3克×分钟-1。H3条件下完全湿润的皮肤对应的蒸发传热系数为99瓦×平方米-2千帕。出汗效率定义为分泌汗与蒸发汗的比率，范围从87%（50%相对湿度，50瓦）到51%（70%相对湿度，100瓦）。相应的湿润度值为0.56和1.0。完全湿润皮肤（H3）的效率降至51%，在一些受试者中效率值非常低。一名受试者在H3条件下的效率为31%。在给定湿润度水平下效率的降低比之前报道的更高。
