空气层厚度对织物系统干热和湿热传递的影响

Influence of Air Layer Thickness on the Dry Heat and Wet Heat Transfer of the Fabric System

衣下空气层厚度对衣下空间的干热和湿热传递存在影响,与服装热湿舒适性密切相关。为了模拟研究衣下空气层厚度对服装干热和湿热传递的影响,控制织物和出汗热平板之间的距离,测定不同空气层厚度下织物系统的热阻和蒸发热阻。结果表明,当空气层厚度在0~1.8cm范围时,织物系统的热阻和蒸发热阻都与空气层厚度之间存在立方关系。织物的透气率与织物系统的干态热阻和蒸发热阻均存在负相关性,透气率较大的织物,其织物系统干态热阻和蒸发热阻均较小。

The air layer thickness influences the dry heat and the wet heat transfer between clothing and skin, which is closely related to the themal and the wet comfort of the clothing. In order to study the effect of the air layer thickness on the dry heat and the wet heat transfer of the clothing, the distance between the fabric and the hot plate was controlled to test the dry thermal resistance and evaporative thermal resistance of fabric system in different air layer thickness. The results show that there is a cubic relationship between the air layer thickness and the thermal resistance and the evaporative thermal resistance of fabric system when the air layer thickness ranges from 0cm to 1.8cm. The air permeability of the fabric is negatively correlated with the dry thermal re-sistance and the evaporative thermal resistance of the fabric system. The fabric with greater air permeability has smaller dry thermal resistance and evaporative thermal resistance.