Evaporative heat transfer properties through fabrics were evaluated using a sweating hot cylinder which was developed in the previous study. Samples used were twelve kinds of representative kimono fabrics, each of which was wrapped around the cylinder with a 4mm air layer between the fabric and the cylinder. The conditions of skin wettedness of the cylinder were controlled at 1.00 (A), 0.55 (B), 0.17 (C) and 0.83 (D) .
1. Evaporative Heat transfer (He) through the fabrics was decreased 30-75% by putting a 4mm air layer between the fabric and the cylinder. The fabrics which showed large He were silk-plafain gauze and silk-leno, both of high air permeability, and those which showed small He were linen, wool and cotton yukata-ji made of span yarn.
2. Evaporative heat resistances (Re) of the fabrics was effectively estimated by the multiple regression equations which were obtained for every condition of skin wettedness.
3. Evaporative efficiency (EE) of eath fabric ranged from 0.4 to 1.2, which was much lower than in the case where no air layer under the fabric was present.
4. As a result of principal component analysis, evaporative heat resistance, air permeability and water and moisture absorption properties were extracted as the three largest components.
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