Please use this identifier to cite or link to this item: https://dspace.mnau.edu.ua/jspui/handle/123456789/14828
Title: Revealing the peculiarities of asymmetry and kurtosis coefficients of gas medium parameters in premises during fire
Authors: Pospelov, Boris
Meleshchenko, Ruslan
Bezuhla, Yuliia
Chubko, Larysa
Kornienko, Ruslan
Kozar, Yurii
Datsenko, Liudmyla
Bilotil, Oleksandr
Pysarevskyi, Serhii
Тішечкіна, Катерина Вікторівна
Tishechkina, Kateryna
Keywords: world of asymmetry
world of excess
vibratory rozpodil
unsafe parameters
gaseous medium
burning material
Issue Date: 2023
Publisher: Scientific-Methodical Center of Educational Institutions in the Sphere of Civil Defence
National University of Civil Defence of Ukraine
National University of Civil Defence of Ukraine
National Aviation University
Bogdan Khmelnitsky Melitopol State Pedagogical University
Dmytro Motornyi Tavria State Agrotechnological University
National Academy of the National Guard of Ukraine
Mykolayiv National Agrarian University
Citation: Pospelov, B., Meleshchenko, R., Bezuhla, Y., Chubko, L., Kornienko, R., Kozar, Y., Datsenko, L., Bilotil, O., Pysarevskyi, S., & Tishechkina, K. (2023). Revealing the peculiarities of asymmetry and kurtosis coefficients of gas medium parameters in premises during fire. Eastern-European Journal of Enterprise Technologies, 3(10 (123), 39–47. https://doi.org/10.15587/1729-4061.2023.280742
Abstract: The object of the study is the coefficients of asymmetry and excess of the selective distribution of hazardous parameters of the gas environment during material fires. The practical importance of the research lies in the use of measures of asymmetry and kurtosis for early detection of fires. The measures of asymmetry and kurtosis for sampling the final size of an arbitrary dangerous parameter of the gas environment are substantiated. The proposed measures make it possible to investigate the peculiarities of the coefficients of asymmetry and kurtosis in relation to the selective distribution of an arbitrary dangerous parameter of the gas environment. At the same time, it becomes possible to numerically determine the degree of difference of the sample distributions of dangerous parameters from the Gaussian, as well as the features of such measures. Experiments were conducted to determine the degree of asymmetry and excess of dangerous parameters of the gas environment in the laboratory chamber at the intervals of the absence and presence of ignition of the test materials. The obtained results indicate that on the intervals of absence and presence of fires, the selective distributions of dangerous parameters of the gas environment differ from the Gaussian distribution. Distributions are complex and individual in nature. Features of measures of asymmetry and kurtosis depend on the type of ignition material. It was established that the maximum values of the modulus of increase in the degree of asymmetry are characteristic for the carbon monoxide concentration (2.939) during the ignition of paper, for the smoke density (3.098) during the ignition of textiles, as well as for the temperature during the ignition of alcohol (7.163) and wood (1.06). It was determined that the maximum values of the modulus of excess measure increase are characteristic for smoke density (4.678) when paper, wood (1.652) and textiles (28.932) ignite, as well as for temperature (49.377) when alcohol ignites
URI: https://dspace.mnau.edu.ua/jspui/handle/123456789/14828
Appears in Collections:Публікації науково-педагогічних працівників МНАУ у БД Scopus

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