Original scientific paper

Measurement of thermal parameters of skin-fabric environment

Budimir Mijović ; Faculty of Textile Technology, University of Zagreb, Prilaz Baruna Filipovića 30, 10000 Zagreb, Croatia
IVANA SALOPEK ČUBRIĆ ; Faculty of Textile Technology, University of Zagreb, Prilaz Baruna Filipovića 30, 10000 Zagreb, Croatia
ZENUN SKENDERI ; Faculty of Textile Technology, University of Zagreb, Prilaz Baruna Filipovića 30, 10000 Zagreb, Croatia

Abstract

Background and Purpose: In combination with metabolic heat, the
heat generated by human activities and worn garment produce 6 basic factors (sometimes called 6 basic parameters because they are in space and time, but fixed representative values are frequently used in analyses) which define thermal body environments. The aim of this paper is to investigate the impact of one parameter – clothing insulation on the total transfer of heat and water vapor.

Materials and Methods: The measurement was carried out on knitted
fabrics commercially used for the production of underwear or different
types of next-to-skin-wear. The transfer of heat and moisture trough fabrics was observed in two simulated climatic environments (moderate and hot) with the constant parameters metabolic energy and air velocity.

Results: The results indicated that the heat resistance increases by laying a knitted fabric layer or under real conditions when the body is dressed in lightweight knitwear by 25%. The test results of the samples under different environment conditions indicated a reduction in heat resistance under moderate conditions. It also applies to the measurement results of the resistance to water vapor transfer, but the differences within the observed relationships are higher than it was in the case of heat transfer resistance.

Conclusions: The study showed that both heat and moisture transfers are freely movable controlling elements of comfort perception. Therefore, the optimal design of clothing systems is important factor of comfort.

Keywords

heat transfer; water vapour transfer; human skin temperature; environmental conditions; heat balance

Hrčak ID:

52697

URI

https://hrcak.srce.hr/52697

Publication date:

31.3.2010.

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