Dynamic Water Vapor and Heat Transport Through Layered Fabrics

In Parts I and II, we reported that during nonsteady-state transport of water vapor through layered fabrics, the temperature between two fabrics rose. In this study, we measure the surface temperature of the first-layer fabrics in similar experiments. The mass of the first layer is changed by tightly stacking the same fabrics, and the surface temperature rise is measured as a function of the mass and the kind of polymers. The rise of surface temperature is proportional to the mass of fabrics and the water ab sorption characteristics of the polymers. We can confirm that the temperature rise that occurs in the space between layered fabrics is mainly due to the heat of absorption of water vapor by the polymers (fabrics).