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Abramov A.V., Smolyaninov K.M., Rodicheva M.V. New calculation method for assessing the quality of thermal protective clothing. Journal of Clothing Science. 2024; 9(1). Available at: https://kostumologiya.ru/PDF/14TLKL124.pdf (in Russian).

New calculation method for assessing the quality of thermal protective clothing

Abramov Anton Vyacheslavovich
Russian State University named A.N. Kosygin (Technologies. Design. Art), Moscow, Russia
ORCID: https://orcid.org/0000-0002-7082-1344
RSCI: https://elibrary.ru/author_profile.asp?id=572662

Smolyaninov Kirill Mikhailovich
Russian State University named A.N. Kosygin (Technologies. Design. Art), Moscow, Russia
ORCID: https://orcid.org/0009-0001-3557-5299
RSCI: https://elibrary.ru/author_profile.asp?id=1235403

Rodicheva Margarita Vsevolodovna
Orel State University named after I.S. Turgenev, Orel, Russia
ORCID: https://orcid.org/0000-0003-1092-6141
RSCI: https://elibrary.ru/author_profile.asp?id=421517

Abstract. The authors proposed to assess the quality of thermal protective clothing based on the balance between heat production in the human body, heat flows in the clothing package and heat transfer to the environment. It has been established that in non-stationary conditions, for example, unstable weather, such calculations should be carried out using methods of mathematical modeling of thermal processes in the «human body element — clothing package» system.

The article presents the results of an analysis of mathematical and numerical models of heat transfer, compiles their classification, and identifies the advantages and disadvantages of each class.

Based on these results, the author’s method for numerical modeling of heat transfer in the «human body element — clothing package» system is proposed. A mathematical model has been compiled that allows one to calculate: the intensity of heat generation in the human body under various loads and the intensity of thermoregulation; heat flows in a clothing package of various compositions, heat transfer in calm air conditions. Thus, when carrying out numerical modeling, it is possible to evaluate the influence of the composition and structure of a clothing package on the dynamics of the local thermal state of the human body.

The article discusses the results of modeling heat transfer in the «human body element — clothing package» system using the example of a set of clothes made of functional materials. The calculation was carried out for eight characteristic zones of the human body, differing in temperature values and heat transfer coefficients. For each of them, the structure of the clothing package was determined, the thermal balance was calculated, and a forecast was made of the dynamics of the thermal state of the human body. The predictions made are confirmed by experimental data obtained both on subjects and on thermal models of the human body (thermal mannequins).

Keywords: heat-protective clothing; clothing quality; clothing package; «person — clothing — environment» system; heat transfer processes; numerical modeling; functional textile materials

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