The heat transfer in the process of passage of droplets of fire-extinguishing compounds through the high-temperature pyrolysis zone of combustible materials was investigated experimentally by optical diagnostics methods with the use of a program-apparatus complex for recording the sizes of droplets. The numerical and volume concentrations of droplets of fire-extinguishing compounds based on water in a finely dispersed aerosol generated in three regimes were determined. The conditions of cessation of the flame combustion and thermal decomposition of a typical combustible material subjected to the action of water, a 5% foamer emulsion, a 10% bischofite solution, and a 20% FR-Les-01 solution were recorded. The sizes of the droplets of the indicated fire-extinguishing compounds and their flow rates necessary and sufficient for the suppression of the flame combustion and thermal decomposition of typical forest combustible materials were determined.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 96, No. 5, pp. 1150–1159, September–October, 2023.
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Kuznetsov, G.V., Kopylov, N.P., Zhdanova, A.O. et al. Influence of Special-Purpose Agents Added to Water on the Localization and Suppression of the Combustion of Materials with it. J Eng Phys Thermophy 96, 1142–1151 (2023). https://doi.org/10.1007/s10891-023-02779-w
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DOI: https://doi.org/10.1007/s10891-023-02779-w