Consideration of Thermodynamic Processes Formation of Compressed-Air Foam in Design Compressed Air Foam Systems

Кодрик, Анатолій; Тітенко, Олександр; Vinogradov, Stanislav; Shakhov, Stanislav

doi:10.4028/www.scientific.net/msf.1006.11

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…They do not provide for a change in the properties of the compressed air foam directly during the operation of the device. In [31], taking into account the results of [32][33][34], we developed a prototype of the compressed air foam supply system. The proposed prototype of the system has extended functionality, in which at least two modes of operation are implemented, which allows generating foam with at least two indicators of multiplicity -"wet" and "dry".…”

Section: Literature Analysis and Problem Statementmentioning

confidence: 99%

Improvement of the Prototype of the Compressed Air Foam System and its Testing

Kodrik,

Titenko,

Vinogradov

et al. 2023

AMM

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The prototype of the compressed air foam system was improved based on the evaluation of the numerical parameters obtained with the help of the developed mathematical model of the foam generation process and the pneumatic-hydraulic scheme. The prototype provides the possibility of foam generation both in autonomous mode, due to the installation of cylinders with compressed gas, and in stationary mode, due to the supply of compressed air from an external source. This allows the use of an improved model of the compressed air foam system both in stationary mode (dry pipes, gas stations, etc.) and for use on heavy and light fire trucks, which is important for large cities. Testing of the improved prototype of the system for extinguishing model fires was carried out. The system provides extinguishing of model fires of class 183 B and 144 B when using both a general-purpose foaming agent and a special film-forming foaming agent. When using a film-forming foaming agent, the extinguishing time was reduced by 1.75 times, the consumption of fire extinguishing solution by 1.47 times. But at the same time, it should be taken into account that the cost of the film-forming foaming agent Sofir (sofirafff 6 %) is more than 3.2 times the cost of the general-purpose foaming agent Sofir. The effectiveness of the improved model in extinguishing class A fires was also confirmed. The autonomous compressed air foam system ensures extinguishing of a class 4 A model fire in 90 seconds. Dry foam with a factor of 14 is noted to be more effective in extinguishing solid combustible substances.

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Section: Literature Analysis and Problem Statementmentioning

confidence: 99%

Improvement of the Prototype of the Compressed Air Foam System and its Testing

Kodrik,

Titenko,

Vinogradov

et al. 2023

AMM

Self Cite

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“…A special direction of increasing the fire-extinguishing capacity of water is the creation of combined fire-extinguishing solutions, which can combine several methods of extinguishing in one technological operation: cooling, isolation and inhibition, which, other things being equal, leads to lower polymeric substances together with additives of inorganic salts and foaming agents on the basis of surfactants (class A foam, foaming agents of class A), [4,5,6]. To increase the fireextinguishing capacity of water is possible due to the reasonable choice of the optimal dispersion of water droplets [2,7].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Prerequisites for Creating a Fire-Extinguishing Solution Based on Water-Absorbing Polymer Ecoflocf-07 for Extinguishing Fires in Ecosystems

Кодрик

Тітенко

Zhartovskyi

et al. 2022

KEM

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Extinguishing fires in ecosystems has features compared to extinguishing fires in residential and industrial buildings, due to the composition and structure of combustible materials, which can form many foci of smoldering and have the ability to re-ignite, have a relatively low fire load compared to man-made ones. All this leads to high costs of water for extinguishing, carrying out operations for additional extinguishing of fires that occur after the main extinguishing and sets special requirements for aqueous extinguishing agents for their extinguishing.The paper analyzes the current state of the availability and trends of development in the world and domestic practice of effective water extinguishing agents and technologies for their use. Possible ways to improve recipes and increase the efficiency of fire extinguishing substances are outlined, taking into account, first of all, the criteria of efficiency, economy and environmental friendliness.It is noted that the main direction of increasing the fire extinguishing capacity of water is to create combined fire extinguishing solutions that can combine several methods of extinguishing in one technological operation: cooling, isolation and inhibition, which, other things being equal, reduces fire extinguishing consumption and extinguishing efficiency. An integrated direction of increasing the fire-extinguishing capacity of water can be considered to increase the coefficient of active use of water by reducing the surface tension of the fire-extinguishing solution, increasing the wettability and viscosity of water by introducing appropriate additives, obtaining optimal droplet dispersion.

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Consideration of Thermodynamic Processes Formation of Compressed-Air Foam in Design Compressed Air Foam Systems

Cited by 2 publications

References 8 publications

Improvement of the Prototype of the Compressed Air Foam System and its Testing

Improvement of the Prototype of the Compressed Air Foam System and its Testing

Theoretical Prerequisites for Creating a Fire-Extinguishing Solution Based on Water-Absorbing Polymer Ecoflocf-07 for Extinguishing Fires in Ecosystems

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