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Registration Number

0215U001950, 0111U008548 , R & D reports

Title

Improved of fire-extinguishing eficciency of aerosol that is based on inorganic salts of potassium by the acoustic shock wave pulse

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Head

Balanyuk Volodymyr Mirchovych, Кандидат технічних наук

Registration Date

04-08-2015

Organization

L'viv Fire State University of Vital Activity Safety

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Report on scientific study: 90 p., 4 fig., 18 tab., 4 parts. The object of research is the process of burn termination at facilities with the possibility of Class A and Class B fires and the effectiveness of automatic aerosol fire extinguishing systems. The aim of the research was to identify and to analyse the characteristics of burn termination in a gas environment with the possibility of Class A and Class B fires during the using of automatic aerosol fire extinguishing systems. Research Methods. The analysis of literature was used during the identifying ways of improving the effectiveness of aerosol extinguishing substances and during the formulation of goals and objectives. Extinguishing efficiency of aerosol fire extinguishing substances for their minimum extinguishing concentration was determined as on the developed installation and as on the metrological certified standard installation and also in test room with volume 64,8 m3 and with presence of models fires of Class A and Class B. Scientific novelty of the results: - first, it was theoretically proved and experimentally confirmed positive additive effect of shockwaves on the extinguishing effectiveness of aerosol substances on the basis of inorganic salts of potassium. We found that it is increased the extinguishing efficiency on 42% more than the minimum extinguishing concentration of well-known aerosol compound and patented in Ukraine Bagr -1; - for the first time, it was theoretically proved and experimentally confirmed that during the action of low-powered shockwaves on the flame in the environment of aerosol it is significantly increased the effectiveness of aerosol extinguishing substances that are based on inorganic potassium salts generated from aerosol compounds of Bagr-1; - first, it was determined the dependence of the power concentration on the effective distance of extinguishing action of the shockwave. Key words: fire extinguishing spray, acoustically shockwave, shockwave, diffusion flame, the flame front, the minimum extinguishing concentration.

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Копистинський Юрій Олегович

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2020-04-02