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Heat Transfer Research
インパクトファクター: 1.199 5年インパクトファクター: 1.155 SJR: 0.267 SNIP: 0.503 CiteScore™: 1.4

ISSN 印刷: 1064-2285
ISSN オンライン: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v36.i7.70
pages 615-622

Certain Regularities of Heat and Mass Transfer Through an Open Aperture in a Fire in the Compartment

S. V. Puzach
Academy of State Fire Service, Ministry of Emergencies of Russia, Moscow, Russia
V. G. Puzach
Institute of High Temperatures, Russian Academy of Sciences, Moscow
V. M. Kazennov
Academy of State Fire Service, Ministry of Emergencies of Russia, Moscow, Russia

要約

An integral method is suggested for calculating the parameters of natural heat and mass exchange in a compartment with the environment through the aperture in a fire; the method takes into consideration nonuniform temperature distribution over the height. Analytical formulas have been developed for determining the distribution of pressure over the height, mass gas flow rates through the apertures, height of the neutral plane, the bulk-mean temperature of outgoing gases, and the critical time of fire. The impact of a nonuniform temperature field on the heat and mass transfer parameters and the critical time of fire have been studied theoretically. The results of the calculation of pressure distribution over the compartment height, obtained by the proposed method and the three-dimensional field mathematical model of fire thermogasdynamics have been compared.


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