Evaporation coefficient determination during the capillary rise

被引:6
作者
Alfaleh, Ayman [1 ]
Benltoufa, Sofien [2 ]
Fayala, Faten [2 ]
机构
[1] Umm Al Qura Univ, Coll Engn Al Qunfudhah, Ind Engn Dept, Mecca, Saudi Arabia
[2] Univ Monastir, Natl Engn Sch Monastir, Lab Thermal & Energet Syst Study LESTE, Av Ibn El Jazzar, Monastir 05000, Tunisia
关键词
Capillary rise; evaporation coefficient; knitted fabric; relative humidity; walking speed; AXIAL IMPREGNATION; FIBER BUNDLE; DYNAMICS; WICKING; FLOW; HEAT;
D O I
10.1177/00405175231168425
中图分类号
TB3 [工程材料学]; TS1 [纺织工业、染整工业];
学科分类号
0805 ; 080502 ; 0821 ;
摘要
Thermo-physiological comfort refers to the heat and moisture transport properties of clothing and how the clothing helps maintain the body's heat balance during various activities. To maintain the thermoregulation of the body, the resulting sweating should be absorbed by wicking fabrics close to the skin and evaporated to the ambient air. In this study, a mathematical model was developed considering evaporation during the capillary rise, based on the geometric configuration of a jersey-knitted fabric and taking evaporation into account. This model was used to calculate the evaporation coefficient. Based on the activities of the worker, sweat diffusion is controlled by capillary diffusion and moisture evaporation. The effect of air velocities of 0 m/s, 1 m/s, and 2 m/s, representing non-walking, walking, and running activities of a worker, respectively, was studied during capillary diffusion. The experiments were conducted at different relative humidities. The results show that the evaporation coefficient depends on the worker's activities and the relative humidity ratio.
引用
收藏
页码:4191 / 4196
页数:6
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