earticle

영어

Recently, the company developed the cooling vest with forced fan(CVFF) for the reduction of heat stress of the worker who working in the hot climate. This CVFF made by the fabric of poly propylene that non reflection material, and it used by the micro air forcing fans and the batteries for there fans. The cooling fan made air movement between human body skin and the cloth, as a result of it made effect of down on skin temperature. But, the cooling effect of CVFF with non reflection material were insufficiency in the outdoor environment because the vest absorb the solar radiation in the day time. This study propose which the reflection material of the aluminum film coat on the CVFF. And this study experiment to the cooling effect of reflection material coating in the CVFF through the temperature measure to the two subjects who the one is the reflection material and the other one is the non reflection material in the outdoor place in hot and humid region(Summer time in the korea). In conclusion, the outside surface temperature of the reflection material coating CVFF was 4.31℃ lower than non reflection material, and the body skin temperature of the subject dressed with the reflection material coating CVFF was approximately 2.01℃ lower than non reflection material. The each subjects evaluated average thermal comfort during the experiment through the ASHRAE 7scale that reflection subject is 1.3 and non reflection subject is 1.9.