Developing a model of tank cooling by water jets from hydraulic monitors under conditions of fire

Abramov, Yuriy; Basmanov, Oleksii; Salamov, J.; Mikhailyuk, A.; Yashchenko, Oleksandr

doi:10.15587/1729-4061.2019.154669

Cited by 15 publications

(6 citation statements)

References 9 publications

(12 reference statements)

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“…An important element is the protection technologies of the firefighters themselves [7], including automated individual devices [8]. Based on this, when the fires are extinguished in tanks for oil and petroleum products, the features of the tank itself [9], possible fireresistant coatings of metal structures [10], methods of deploying fire departments [11] are taken into account.…”

Section: Review Of Up-to-date Approaches For Extinguishing Oil and Petroleum Products Using Various Substancesmentioning

confidence: 99%

Review of up-to-date approaches for extinguishing oil and petroleum products

Shevchenko¹,

Strelets²,

Loboichenko³

et al. 2021

SOCAR Proceedings

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The paper provides a review of up-to-date approaches for extinguishing oil and petroleum products. The variability of extinguishing methods and fire extinguishing agents is noted. Fire extinguishing agents used in extinguishing petroleum products are considered in more detailed way, and their environmental characteristics are discussed. The ambiguity of using various foams for extinguishing the fire is shown. A new method for extinguishing oil and petroleum products, based on the acoustic effect, and the capabilities of acoustic fire extinguishers for preventing and eliminating the combustible hydrocarbon fires, and their identification are analyzed. The further development of known approaches and the simultaneous emergence of innovative methods for extinguishing oil and petroleum products are shown. Keywords: oil; petroleum products; extinguishing agent; environmental characteristics; extinguishing foam; acoustic method.

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Section: Review Of Up-to-date Approaches For Extinguishing Oil and Petroleum Products Using Various Substancesmentioning

confidence: 99%

Review of up-to-date approaches for extinguishing oil and petroleum products

Shevchenko¹,

Strelets²,

Loboichenko³

et al. 2021

SOCAR Proceedings

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“…Such robots are equipped with high-speed fire monitors [15], with the help of which it is possible to control the supply of a stream of extinguishing agent in space. In [16], a mathematical model is presented in relation to such a variant of controlling a stream of extinguishing agent, which takes into account the resistance of the air environment. In [17], a model of the trajectory of movement of a fire extinguishing agent using gel-forming compositions is considered.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Estimating the Influence of the Wind Exposure on the Motion of an Extinguishing Substance

Abramov

Basmanov

Kryvtsova

et al. 2020

EUREKA: Physics and Engineering

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One of the tasks to be solved when deploying fire extinguishing systems is to determine the range of the fire extinguishing agent supply to the combustion center. This problem is solved using data on the trajectory of the fire-extinguishing agent in the combustion center. The presence of wind impact on the process of supplying a fire extinguishing agent will lead to a change in its trajectory. To take into account wind impact, it becomes necessary to assess the result of such impact. Using the basic equation of dynamics for specific forces, a system of differential equations is obtained that describes the delivery of a fire extinguishing agent to the combustion center. The system of differential equations takes into account the presence of wind impact on the movement of the extinguishing agent. The presence of wind action is taken into account by the initial conditions. To solve such a system, the integral Laplace transform was used in combination with the method of undefined coefficients. The solution is presented in parametric form, the parameter of which is time. For a particular case, an expression is obtained that describes the trajectory of the supply of the extinguishing agent into the combustion center. Nomograms are constructed, with the help of which the operative determination of the estimate of the maximum range of the fire-extinguishing agent supply is provided. Estimates are obtained for the time of delivery of a fire-extinguishing agent to the combustion center, and it is shown that for the characteristic parameters of its delivery, this value does not exceed 0.5 s. The influence of wind action on the range of supply of a fire extinguishing agent is presented in the form of an additive component, which includes the value of the wind speed and the square of the time of its delivery. To assess the effect of wind impact on the movement of the fire extinguishing agent, an analytical expression for the relative error was obtained and it was shown that the most severe conditions for supplying the fire extinguishing agent to the combustion center, the value of this error does not exceed 5.5%. Taking into account the wind effect when assessing the range of supply of a fire-extinguishing agent makes it possible to increase the efficiency of fire-extinguishing systems due to its more accurate delivery to the combustion center

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“…Among those considered, organic [5] solar cells, GaInP/GaInAs/Ge triple-junction solar cells [6,7], cadmium telluride (CdTe) cells [4,8], and copper indium gallium selenide cells [9] during operation. Among other types of thin-film solar cells, CdTe solar cells are suitable for both space flight and terrestrial applications due to their economic advantages relative to the production process and high specific power relative to their thickness [10][11][12]. However, the theoretical value of efficiency for such SC is currently unattainable.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%