Determining the patterns of extinguishing polar flammable liquids with a film-forming foaming agent

Authors

DOI:

https://doi.org/10.15587/1729-4061.2023.278910

Keywords:

foaming agent for extinguishing fires, foam inflow, foam resistance, isolating of flammable liquid

Abstract

An issue related to the use of foaming agents to extinguish fires involving flammable liquids is to ensure the efficiency of vapor insulation of flammable liquid and the foam stability during operation. Therefore, the object of research was a change in the insulating properties of the foaming agent film when interacting with a polar combustible substance. It has been proven that the presence of foaming agent on a flammable liquid leads to the formation of an insulating film on the surface resistant to the combustion temperature of the liquid, due to which re-ignition shifts towards longer time. A film of foaming agent was formed on the surface of the flammable liquid by leaking from the screen, which led to the insulation of the surface. The measured contact area of the foaming film with the electrode was more than 6.2·10-3 m2, which indicates the formation of a barrier for temperature, which collapses over time. According to experimental data on changes in electrical resistance, the critical contact area of the foaming film with the electrode was calculated, at which the film is destroyed. Based on the derived dependences, the change in the process of mass transfer of the foaming film to a flammable liquid was calculated, equal to about 800 s. The maximum possible mass transfer of the foaming agent into the flammable liquid and the reduction of insulation capacity were evaluated. The peculiarities of foam supply to the surface of alcohol through the screen are that the quenching time was about 156 s while the critical intensity of the supply of the working solution of the foaming agent was 0.054 dm3/(m2·s). And the time interval before re-ignition was about 470 s, which is enough to cool the fire site. Thus, there is reason to assert the possibility of targeted control over the processes of extinguishing polar flammable liquids with a foaming agent

Author Biographies

Yuriy Tsapko, National University of Life and Environmental Sciences of Ukraine

Doctor of Technical Sciences, Professor

Department of Technology and Design of Wood Products

Ruslan Likhnyovskyi, Kyiv National University of Construction and Architecture

PhD

V. D. Glukhovsky Scientific Research Institute for Binders and Materials

Аleksii Tsapko, Ukrainian State Research Institute "Resurs"

PhD, Senior Research Fellow

Department of Research on Quality and Storage Conditions of Petroleum Products and an Industrial Group of Goods

Vitalii Kovalenko, Institute of Public Administration and Research in Civil Protection

PhD

Oksana Slutska, Institute of Public Administration and Research in Civil Protection

PhD

Research Center for Civil Protection

Pavlo Illiuchenko, Institute of Public Administration and Research in Civil Protection

Research and Testing Center

Kostiantyn Sokolenko, Bila Tserkva National Agrarian University

PhD, Assistant

Department of Forestry

Yuriy Gulyk, Institute of Public Administration and Research in Civil Protection

Research Center of Fire Protection

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Determining the patterns of extinguishing polar flammable liquids with a film-forming foaming agent

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Published

2023-06-30

How to Cite

Tsapko, Y., Likhnyovskyi, R., Tsapko А., Kovalenko, V., Slutska, O., Illiuchenko, P., Sokolenko, K., & Gulyk, Y. (2023). Determining the patterns of extinguishing polar flammable liquids with a film-forming foaming agent. Eastern-European Journal of Enterprise Technologies, 3(10 (123), 48–56. https://doi.org/10.15587/1729-4061.2023.278910

Issue

Vol. 3 No. 10 (123) (2023): Ecology

Section

Ecology

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Copyright (c) 2023 Yuriy Tsapko, Ruslan Likhnyovskyi, Аleksii Tsapko, Vitalii Kovalenko, Oksana Slutska, Pavlo Illiuchenko, Kostiantyn Sokolenko, Yuri Gulyk

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