مهندسی مکانیک مدرس

مهندسی مکانیک مدرس

تجزیه و تحلیل انفجار مخزن ذخیره گاز مایع (LPG) در یک خودروی جاده ای بر اثر پدیده بخار مایع در حال جوش (BLEVE)

نوع مقاله : پژوهشی اصیل

نویسندگان
دانشگاه کاشان
چکیده
آلایندگی کم و جابجایی آسان برخی از سوخت‌ها مانند گاز نفتی مایع (ال‌پی‌جی:LPG) برای استفاده در خودروها همواره مورد توجه مصرف کنندگان بوده است. به‌علت ذخیره این سوخت با فشار 8 تا 10 بار در مخازن غیر استاندارد احتمال بروز خطراتی چون انفجار و آتش‌سوزی وجود دارد. در این مقاله به بررسی سناریوی آتش‌سوزی در یک خودرو که باعث ایجاد پدیده انفجار بخارات مایع در حال جوش (BLEVE) و تشکیل گوی آتش (Fireball) با قطر 14/19متر شد، پرداخته می‌شود. اثر فشار در مخزن 60 لیتری و سپس اثر تشعشع در حادثه رخ داده شده مدل‌سازی شده است. نتایج نشان می‌دهد تا فاصله 2 متری از محل انفجار مخزن گاز مایع، فشار تا 8 بار ادامه دارد و اثر تشعشع تا فاصله 48 متری از مرکز حادثه تا 4 کیلووات بر متر مربع پیش می‌رود و تا فاصله 60/14 متری مقدار تشعشع حرارتی به 5/37 کیلووات بر متر مربع می‌رسد که بسیار نگران‌کننده است. با درنظرگرفتن تأثیرات فشار و تشعشع حرارتی فاصله ایمن و میزان خسارت نیز پیش‌بینی شده است. نتایج می‌تواند در جهت بهبود ایمنی و بازنگری در ساخت مخازن ال‌پی‌جی جهت کاهش تلفات استفاده شود.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Analysis of Liquid Gas (LPG) Storage Tank Explosion in a Road Vehicle due to the Boiling Liquid Vapor Phenomenon (BLEVE)

نویسندگان English

Omid Majnuoni
Ghanbar Ali Sheikhzadeh
Mehran Shakibaei
University of Kashan
چکیده English

The low amount of pollutant and smooth way of transition of some fuels such as liquid petroleum gas (LPG) for usage in cars have always been the concern of some consumers. Duo to the storage of this fuel with a pressure of 8 to 10 bar in non-standard tanks, there is a possibility of risk and danger likewise explosion and fire. In this article, the scenario of fire-caught car that caused the Boiling Liquid Expanding Vapor Explosion (BLEVE) and the formation of a fireball with a diameter of 19.14 meters has been investigated. The effect of pressure in the 60-liter tank and then the effect of radiation in the incident have been modeled. accordingly The results have illustrated the fact that until 2 meters from the liquid gas tank explosion site, the pressure continues up to 8 bar, and the radiation effect reaches 4 bar in a distance of 48 meters from the center of the accident, and in a distance of 14.60 meters, the amount of thermal radiation reaches 37.5 kilowatts per square meter, which it is very worrying. By considering the pressure and thermal radiation effects, the safe distance and the amount of damage are predicted. The results can be used to improve safety and revise the construction of LPG tanks to reduce losses.

کلیدواژه‌ها English

LPG Gas
Tank explosion
BLEVE
Radiation
Fatality
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