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بررسی اثرات حریق یک صندلی در یک سالن سینما با استفاده از سیستم‌های تهویه جابجایی،جت برخوردی و لایه‌ای | ||
| نشریه مهندسی مکانیک امیرکبیر | ||
| مقاله 14، دوره 53، شماره 11، بهمن 1400، صفحه 5573-5594 اصل مقاله (1.2 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/mej.2021.19681.7089 | ||
| نویسندگان | ||
| مصطفی رمضانی1؛ امیرمحمد جدیدی* 2؛ روح الله رفعی1 | ||
| 1دانشگاه سمنان | ||
| 2استادیار گروه مکانیک، دانشگاه سمنان، سمنان، ایران | ||
| چکیده | ||
| در این مقاله به بررسی اثرات حریق یک صندلی در سالن سینما با استفاده از سیستم‌های تهویه جابجایی، جت برخوردی و لایه‌ای پرداخته شده است. از مهم‌ترین نتایج این بررسی می‌توان گفت میان سیستم‌های تهویه جابجایی، جت برخوردی و لایه‌ای، دو سیستم تهویه جابجایی و جت برخوردی در کنترل دوده حاصل از حریق به میزان 31 درصد، در گاز کربن مونو اکسید 16 درصد و در گاز کربن دی اکسید 11 درصد توانستند بهتر از سایر سیستم‌ها عمل کنند، اشاره کرد. غلظت گازهای سمی حاصل از حریق در هر سه سیستم در محدوده مجاز و بی خطر قرار گرفته است به این صورت که دو سیستم تهویه جابجایی و جت برخوردی 6/3 پی‌پی‌ام و سیستم تهویه لایه‌ای7/5 پی‌پی‌ام برای گاز کربن مونو اکسید و در مورد گاز کربن دی اکسید نیز دو سیستم تهویه جابجایی و جت برخوردی 330 پی‌پی‌ام و سیستم تهویه لایه‌ای نیز 370 پی‌پی‌ام ثبت کرده‌اند. در کنترل حرارت خروجی از درب‌های سالن سینما، سیستم‌های تهویه جابجایی و جت برخوردی در درب شماره 1 به میزان 66/6 درصد و در درب شماره 2 نیز سیستم تهویه جت برخوردی 96 درصد نسبت به سیستم تهویه لایه‌ای عملکرد بهتری داشته است. | ||
| کلیدواژه‌ها | ||
| تهویه مطبوع؛ حریق؛ پایروسیم؛ کربن مونوکسید؛ شبیه‌سازی گردابه‌های بزرگ | ||
| عنوان مقاله [English] | ||
| Investigating the Effects of Loung Chair Fire in a Cinema Hall Using Displacement, Impingement Jet and Stratum Ventilation Systems | ||
| نویسندگان [English] | ||
| Mostafa Ramezani1؛ Amir Mohammad Jadidi2؛ Roholah Rafee1 | ||
| 1Semnan University | ||
| 2Assistant professor of mechanical engineering, Semnan university,Semnan, Iran | ||
| چکیده [English] | ||
| 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. | ||
| کلیدواژه‌ها [English] | ||
| Air conditioning, Fire, Pyrosim, Carbon monoxide, Large eddy simulation | ||
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| مراجع | ||
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