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Methodology for Determining Parameters of Ozone-Safe Fire Extinguishing Substances

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Abstract:

In this work, the objects of research are individual chemical substances and multicomponent mixtures (gaseous and liquid) used in extinguishing fires.The design of automatic gas fire extinguishing installations is associated with the solution of many scientific and technical issues and is based on the calculation and forecasting of such important data as the thermophysical properties of individual substances and mixtures consisting of them. Phase equilibria parameters data are of particular interest. Also, such data are necessary for scientific and practical research in the creation of the latest, more progressive fire extinguishing agents. It is often difficult or simply impossible to obtain experimentally thermophysical characteristics and parameters of phase equilibria for a wide range of states. Moreover, experimental information is expensive and time-consuming.The work is dedicated to the development of theoretical methods for determining the parameters of phase equilibria of both individual chemicals used to extinguish fires and multicomponent fire-extinguishing mixtures. The use of the proposed techniques makes it possible to obtain numerical values of the required characteristics of fire extinguishing agents by calculation with the required accuracy using a minimum of initial data.The method of mathematical modeling makes it possible to obtain a mathematical model of phase equilibria based on thermodynamic perturbation theory in order to determine the basic functions of the state in the absence of empirical parameters.The proposed method for calculating the parameters of phase diagrams for multi component fire-extinguishing mixtures was used to determine the thermodynamic parameters of the ozone-safe fire-extinguishing composition.

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Periodical:

Key Engineering Materials (Volume 927)

Pages:

69-76

DOI:

https://doi.org/10.4028/p-pzpht0

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Online since:

July 2022

Authors:

Kseniya Umerenkova, Vitalii Borisenko, Marianna Goroneskul*

Keywords:

Argonite, Compositions for Firefighting, Mathematical Model, Phase Diagrams

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© 2022 Trans Tech Publications Ltd. All Rights Reserved

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