Membrane technology for multilayer structures of clothing with thermal control intended to extreme conditions

Аuthors

Demidova N. S.^*, Dvornikov M. V.^**, Nesinova A. S.^***

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: n.s.demidova@gmail.com
**e-mail: dvormv@yandex.ru
***e-mail: asn84@yandex.ru

Abstract

Smart clothing imitating human skin functions and animal hair coat realizes heat exchange dynamics and perspiration. It becomes therefore an active mechanism of human interaction with external environment for a range of extreme modes. An attempt is carried out to formalize biological processes of human surface heat transfer, which is exemplified for a case of three-layer design clothes with a set of parameters of porosity, permeability and moisture absorption, taking into account the phenomena of wettability and capillarity, which are inherent in the membrane technology. The layerwise mathematical model was presented, in which the parametric analysis was carried out. The results are shown in the criterial form. The main parameters that determine the mathematical model are Marangoni number, Weissenberg number, capillary number. The structural recommendations are formulated.

Keywords:

clothing, heat exchange, perspiration, moisture absorption, wettability, membrane technologies, mathematical model