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Effect of Air Permeability of Textile Fabrics on heat and Moisture Transfer Properties

纺织面料透气性对传热传湿性能的影响

基本信息

批准号：
62460227
负责人：
NIWA Masako
金额：
$ 2.69万
依托单位：
Nara Women's University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1987
资助国家：
日本
起止时间：
1987 至 1988
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62460227/
关键词：
Air Permeability Resistance of Air Penetration Thermal Resistance of Fabrics Heat Loss of Fabrics Resistance of Moisture Taansfer of Fabrics Prediction of Air Permeability of Multi-layered Fabrics Simulations Heat and Moisture Transfer 衣服内空気

项目摘要

Most of clothing materials consist of fiber and air space. Fabrics are air-permeable because of its air space. This property closely related both with the heat and moisture transfer through fabrics. Particularly, when wind penetration occurs through the clothing system, the resistance of heat and moisture transfer of the system decrease with increasing air velocity.in order to provide the basic design information of insulating fabrics, the equations predict-ing the steady heat transfer from the heated plate (30 ゜C) to the surroundings (20 ゜C) through fabrics have been obtained by the experiment and the simple heat transfer model. For impermeable materials, the effects of emissivity, thermal resistance of materials, the size of air gap, and wind velocity on the heat transfer have been discussed. For the fabrics, especially, the effect of air permeability on the heat transfer has been discussed.The empirical equation of the moisture has been obtained for hygrohobic fabrics. The effect of air permeability on moisture transfer begins to be displayed at the wind penetration rate of 1.58 x 10^<-3> m/s. This result means that air permeability plays a more important role in moisture transfer even at lower wind velocity. The air permeability of fabrics is one of the essential property to describe the performance of fabrics used for the clothing material.

大多数服装材料由纤维和空气层组成。织物是透气的，因为它的空气空间。这种性能与织物的热湿传递密切相关。特别是当风穿过服装系统时，系统的热湿传递阻力随着空气量的增加而减小velocity.in为了给隔热织物的设计提供基本的依据，通过实验和简单的传热模型，得到了预测从加热板（30 ℃）通过织物向周围环境（20 ℃）稳态传热的方程。对于非渗透性材料，讨论了材料的发射率、热阻、气隙尺寸和风速对传热的影响。特别是对织物，讨论了透气性对传热的影响，得出了憎湿织物的湿度经验公式。空气渗透率对水分迁移的影响在1.58 × 10 ~ 4 m/s的风速下开始显现<-3>。这一结果意味着，即使在较低的风速下，透气性在水分传递中也起着更重要的作用。织物的透气性是描述服装面料性能的基本指标之一。