Abstract:

In order to determine a scientific test method of clothing thermal insulation performance, based on the LD-1 clothing insulation tester, the unsteady heat-transferring time of the of the clothing system was studied under the conditions of the control of the clothing thermal resistance and environment temperature. Under the constant environment conditions, the influence of dressing way on the clothing thermal resistance was studied; and under the constant clothing system, the influence of the environment temperature and humidity on the clothing thermal resistance was studied. The experimental results show that the unsteady heat-transferring time peolongs along with the increase of the clothing thermal resistance, and prolongs along with the decrease of the ambient temperature. When testing the coat type clothing, it is necessary to wear a standard underwear to reduce the wind tunnel effect. With the increase of ambient temperature, the measurement value of clothing thermal resistance will increase, which will affect the measurement accuracy of the clothing thermal resistance, thus all measurements must be carried out under conditions close to the clothing use environment close.

Key words: clothing insulation tester, nnsteady heat transferring time, temperatre and humidity, clothing thermal insulation