Investigating the Effects of Loung Chair Fire in a Cinema Hall Using Displacement, Impingement Jet and Stratum Ventilation Systems

Document Type : Research Article

Authors

1 Semnan University

2 Assistant professor of mechanical engineering, Semnan university,Semnan, Iran

3 Faculty of Mechanical Engineering, Semnan University

Abstract

In this article, the effects of burning a chair in a cinema hall have been investigated by using displacement, impingement jet, and stratum ventilation systems. The most important results of this study by comparing displacement ventilation, impingement jet ventilation, and stratum ventilation is that displacement ventilation and impingement jet ventilation could decrease soot of fire by 31%, carbon dioxide 16%, and carbon monoxide 11% better than other systems. The concentration of toxic gases from the fire in all three systems is within the permissible and safe range in a way that the two systems of displacement ventilation and impingement jet ventilation recorded 6.3 ppm and 7.5 ppm for carbon monoxide respectively. In the case of carbon dioxide gas, two systems of displacement ventilation and impingement jet have decreased CO2 to 330 ppm and 370 ppm respectively. In controlling the heat exhaust from the doors of the cinema hall, displacement ventilation and impingement jet ventilation in door 1 are 66.6% better than stratum ventilation and in door 2 the impingement jet system is 96% better than the stratum ventilation system.

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Main Subjects

References

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Amirkabir Journal of Mechanical Engineering
Volume 53, Issue 11
February 2022
Pages 5573-5594

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