室内高温环境下降温背心的蒸发散热计算及验证

Calculation and verification of evaporation heat loss of cooling vest in the indoor high temperature environment

分析室内高温环境下,“人体降温背心高温环境”这一系统的热交换过程,建立降温背心蒸发散热理论计算式,获得不同高温及穿用时间条件下降温背心需要的最低单位面积含水量,并进一步基于垂直式热辐射仪和红外灯,在室内环境下对吸水絮片进行试验测试,以验证前述的理论计算式。结果表明,建立的室内高温环境下的蒸发散热理论计算式和实验室测试结果具有良好的一致性。该理论计算式可用于指导降温背心用吸水絮片的开发和使用。

Through analyzing the heat exchange process of the“human body-cooling vest-high termperature environment”system in the indoor high temperature environment,the theoretical calculation formula for the evaporation heat loss of the cooling vest was established,and the minimum water content per unit area required for the cooling vest under different high temperatures and wearing times was obtained.Furthermore,based on the vertical heat radiator and infrared lamp,the absorbent flocs were tested in the indoor environment in order to verify the above theoretical calculation formula.The results showed that,the established theoretical calculation formula for evaporation heat loss in the indoor high temperature environment was in good agreement with the laboratory test results,and this theoretical calculation formula could be used to guiding the development and utilization of absorbent flocs for cooling vests.