Characterizing the performance of a single-layer fabric system through a heat and mass transfer model - Part II: Thermal and evaporative resistances
Characterizing the performance of a single-layer fabric system through a heat and mass transfer model - Part II: Thermal and evaporative resistances
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DOI：
10.1177/0040517510395994
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发表时间：
2011-06-01
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
在这项工作的第一部分，建立了一个热质传递模型来计算单层织物系统的热阻和蒸发阻力。利用该模型，研究了环境条件、气隙和材料性质对热阻和蒸发阻力的影响。气隙厚度和布层厚度对热阻和蒸发阻力都有显著影响。气隙中自然对流的发生会导致热阻和蒸发阻力的降低，需要考虑以确定最佳气隙厚度。布料层的孔隙度对这两种阻力有明显的影响，是一种有助于实现热保护和舒适性的极佳性能。该工作为服装贴合性和材料性能的优化提供了基本依据，以实现服装系统的良好性能。
In Part I of this work, a heat and mass transfer model was developed to calculate the thermal and evaporative resistances of a single-layer fabric system. Using this model, the effects of environmental conditions, air gap, and material properties on the thermal and evaporative resistances have now been studied. The thickness of the air gap and that of the fabric layer were shown to contribute significantly to both the thermal resistance and evaporative resistance. The occurrence of natural convection in the air gap can cause decreases in thermal and evaporative resistances, and needs to be considered to determine the optimal air gap thickness. The porosity of the fabric layer has a distinct effect on the two resistances, and is an excellent property to help achieve both thermal protection and comfort. This work provides the fundamental basis for the optimization of garment fit and material properties to achieve good performance of the clothing system.