影响气体冷却服热舒适性因素的实验

(湖南科技大学 资源环境与安全工程学院,湖南 湘潭 411201)

环境温度; 劳动强度; 通气量; 衣内微气候; 皮肤温度

Experimental study on factors affecting thermal comfortability of air cooling garment
LIU He-qing,GAO Li-ying,YOU Bo,WU Shi-xian,

(School of Resource & Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,China)

ambient temperature; labor intensity; ventilation volume; microclimate in garment; skin temperature

DOI: 10.13800/j.cnki.xakjdxxb.2018.0606

备注

采用真人实验的方法,研究人上体躯干穿着气体冷却服时衣内微空间气候参数及上体躯干皮肤温度受环境温度、劳动强度和通气量变化的影响。结果 表明:环境温度是影响衣内空间空气温度、湿度及皮肤温度的最主要因素; 体表及衣内空间汗液蒸发吸热是影响衣内空间空气温度、湿度及皮肤温度的重要因素; 影响体表汗液蒸发的主要因素是体表气流速度、劳动强度及通入压缩空气水蒸气分压力; 增大压缩空气通气量对衣内空间空气温度、湿度及皮肤温度无显著影响。实验证明,该型气冷服能将人体皮肤温度控制在舒适范围内,对人体热舒适性具有一定程度的改善作用,但气冷服结构、压缩空气管及开孔布局有待改进,以充分利用汗液蒸发吸热作用,提高气冷服的降温效果。

The real-life experiment method was used to study the influence of ambient temperature,labor intensity and ventilation volume on micro-space climate parameters and upper body skin temperature of the upper body trunk when wearing the gas cooling garment.The results show that ambient temperature is the most chief factor affecting air temperature,humidity of clothing inner micro-space and skin temperature.Sweat evaporation from skin surface is an important factor affecting air temperature,humidity and skin temperature.Air velocity of skin surface,labor intensity and water vapor pressure are the main factors affecting sweat evaporation.The increasing volume of compressed air has no significant effect on air temperature,humidity and skin temperature.The experiment proves that the gas cooling garment can keep skin temperature in a comfortable range and enhance human thermal comfortability partly.However,the gas cooling garment structure,compressed air tube and opening layout need to be improved to make full use of sweat evaporation.