Defining patterns of heat transfer through the fire-protected fabric to wood
| Autor: | Yuriy Tsapko, Аleksii Tsapko, Olga Bondarenko |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Applied Mathematics
Mechanical Engineering Energy Engineering and Power Technology surface treatment HD2321-4730.9 Industrial and Manufacturing Engineering Computer Science Applications fire protection of wood swelling coating Control and Systems Engineering Management of Technology and Innovation T1-995 Industry thermal conductivity thermal-physical properties Electrical and Electronic Engineering Technology (General) |
| Zdroj: | Eastern-European Journal of Enterprise Technologies, Vol 6, Iss 10 (114), Pp 49-56 (2021) |
| ISSN: | 1729-4061 1729-3774 |
| DOI: | 10.15587/1729-4061.2021.245713 |
| Popis: | Under the thermal action on wood when applying a protective screen made from fire-retardant fabric, the process of temperature transfer is natural. It has been proven that depending on the thermal properties of the coating of fire-proof fabric, this could lead to varying degrees of heat transfer. Therefore, it becomes necessary to study the conditions for establishing low thermal conductivity and establishing a mechanism that inhibits heat transfer to wood. Given this, a mathematical model has been built of the process of heat transfer to wood when it is protected by a screen made of fire-proof fabric. According to the experimental data on determining the temperature on the non-heated surface of the fabric and the resulting dependences, the density of the heat flow transmitted to wood through fire-proof fabric was determined. Thus, with an increase in the temperature, the density of the heat flow to the surface of the wood through a protective screen made of fire-proof protected coating based on "Firewall-Attic" increases to a value above 16kW/m2, which is not sufficient for ignition of wood. Instead, the density of the heat flow through the protective screen of fire-proof fabric protected by the "Firewall-Wood"-based coating did not exceed 14kW/m2. This makes it possible to argue about the compliance of the detected mechanism of formation of heat-insulating properties in the protection of wood and the practical attractiveness of the proposed technological solutions. Thus, the peculiarities of inhibition of the process of heat transfer to wood through a protective screen made of fire-proof fabric under the action of a radiation panel imply the formation of a heat-insulating layer of coked cellular material when decomposing the coating. Thus, on the surface of the fire-proof fabric, a temperature above 280°C was achieved and, on an untreated surface of the fabric, it did not exceed 220°C, which is insufficient for the ignition of wood. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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