东华大学学报（英文版）2006，Vol.23Issue(5)：54-58,5.
Moisture Absorption, Mass Loss and Evaporative Resistance of Clothing in Transient Condition
Moisture Absorption, Mass Loss and Evaporative Resistance of Clothing in Transient Condition
Chuansi Gao 1Ingvar Holmér1
作者信息
- 1. The Thermal Environment Laboratory, Division of Ergonomics, Department of Design Sciences, Faculty of Engineering, Lund University,Box 118, 22100 Lund, Sweden
- 折叠
摘要
Abstract
The water vapour resistance of clothing ensembles is not as commonly determined as dry thermal insulation. The measurement techniques are more complicated and the measurement values differ among laboratories. Due to complicated moisture transfer process through clothing ensemble, the moisture absorbed and evaporated varies in transient and steady state phases depending on properties,thickness of clothing, and environmental conditions. The purpse of this study was to measure moisture gain inside hygroscopic underwear, and hydrophobic and permeable outer wear as a function of time, to investigate mass loss from "skin" as well as from the manikin, to quantify evaporative heat loss and total heat loss from the manikin,and to determine water vapour resistance of clothing.Manikin Tore was used by wearing wet "skin" to simulate sweating condition. Moisture content in the inner garment gain shows an exponential relation against time. Moisture in the outer permeable layer shows little gain. On the contrary,mass loss directly from the wet skin decreases exponentially. The mass loss from the manikin is relatively stable throughout three test phases. The evaporative heat loss is about 2/3 of the total heat loss from the sweating manikin. While measuring the evaporative resistance of clothing ensembles with hygroscopic inner garment and permeable outer garment, unlike to measure ensembles with impermeable outer layer, one hour measurement time is enough to get relatively stable results. The variation between the 1st hour and the 3rd hour is less than 5%. The length of transient period and measurement time is dependent on the permeability, thickness of clothing ensembles and environmental conditions.关键词
moisture absorption/mass loss/evaporative resistance/transient condition/clothing ensembleKey words
moisture absorption/mass loss/evaporative resistance/transient condition/clothing ensemble分类
轻工纺织引用本文复制引用
Chuansi Gao,Ingvar Holmér..Moisture Absorption, Mass Loss and Evaporative Resistance of Clothing in Transient Condition[J].东华大学学报（英文版）,2006,23(5):54-58,5.
