Effect of wind velocity and walking speed on the thermal insulation of the out surface air layer of clothing

With the study of clothing thermal insulation, this paper analyses deeply the relationship between speed of wind and clothing thermal insulation. It gives the formulae about the relationship between both wind speed and walk speed and clothing thermal insulation under the controllable circumstance condition by the method, using manikins, in order to validate that the formulae that are prescient and useable, and, to find the difference between surface air insulation of skin and that of clothing. Clothing thermal insulation includes intrinsic thermal clothing insulation and surface air insulation. The experiment shows that the speed of wind and/or walk can make the resistance of the air layer next to the outer surface of the clothing decrease.