Characterizing the performance of a single-layer fabric system through a heat and mass transfer model - Part I: Heat and mass transfer model
Characterizing the performance of a single-layer fabric system through a heat and mass transfer model - Part I: Heat and mass transfer model
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DOI：
10.1177/0040517510388547
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发表时间：
2011-03-01
影响因子：
2.3
通讯作者：
McDonald, Andre
中科院分区：
文献类型：
--
作者：
Ding, Dan;Tang, Tian;McDonald, Andre
开发了一个数学模型来研究通过由单层织物和气隙组成的织物系统的耦合热和湿传递。空气和湿度的特性对温度敏感，因此被假定为当地温度的函数。因此，该模型适用于广泛的边界条件。提出了一种数值方案来求解各层的温度和水蒸气浓度的分布，从而评估织物系统的热阻和蒸发阻力。使用防汗加热板对两种特定织物进行了实验，数据显示与模型预测吻合良好，表明传热传质模型能够准确预测单层织物系统的热阻和蒸发阻力。
A mathematical model was developed to study the coupled heat and moisture transfer through a fabric system that consists of a single layer of fabric and an air gap. Properties of air and moisture are sensitive to temperature and, hence, were assumed to be functions of local temperature. Therefore, the model is applicable to a broad range of boundary conditions. A numerical scheme was proposed to solve the distributions of temperature and water vapor concentration throughout the layers, from which the thermal and evaporative resistances of the fabric system were evaluated. Experiments were conducted for two particular fabrics using a sweating guarded hotplate, and the data show good agreement with the model predictions, suggesting that the heat and mass transfer model is capable of accurately predicting thermal and evaporative resistances for the single-layer fabric system.