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Information × Registration Number 0220U103796, 0119U002941 , R & D reports Title Determination of the parameters of "sublayer" quenching for domestic blowing agents popup.stage_title Head Kovalyshyn Vasyl V, Доктор технічних наук Registration Date 19-11-2020 Organization Lviv State University of Life Safety popup.description2 Research report: 94 p., 8 tables, 50 figures, 62 sources. DETERMINATION OF PARAMETERS OF "SUBLAYER" EXTINGUISHING FOR DOMESTIC FOAMING AGENTS. The object of research is fire extinguishing of vertical steel tanks with oil and oil products using fluorosynthetic film-forming foaming agents of domestic production by the "under-layer" method. The purpose of the work is to determine the fire-extinguishing efficiency of domestic-made general and special-purpose foam concentrates in "under-layer" extinguishing of tanks. Research methods: method of processing statistical data; methods of mathematical modeling; physicochemical methods - thermodynamic. The outlined problems of extinguishing fires in tanks, as well as the peculiarities of their elimination by supplying fluorosynthetic foaming agents under a layer of a combustible substance. An experimental setup has been designed to simulate such fires. Experimental studies have been carried out to determine the fire extinguishing efficiency of domestically produced foam concentrates in the "under-layer" extinguishing of tanks. It has been established that the existing domestic regulatory documents require changes in the intensity of the foaming agent supply during "under-layer" extinguishing of oil and oil products in tanks. A mathematical model of the motion of a submerged non-free foam jet in a motor fuel medium is presented, which adequately describes the real physical processes occurring during "under-layer" extinguishing of fires in vertical steel tanks. The parameters of motion of flooded jets of low expansion foam in a tank with motor fuel have been determined, which will be optimal for transporting foam through the fuel layers to its surface. Implemented solutions from the implementation of the mathematical model are fully consistent with the results obtained in the course of experimental research on extinguishing a mock class B fire on the designed installation, which is a reduced version of the "RVS-5000" tank.  Product Description popup.authors Voitovych Tatiana M Petrovsky Vitaly L popup.nrat_date 2020-11-19 Close