摘要
采用小汽车火灾实验的热释放速率模型 ,应用多室区域火灾模拟软件 CFAST3 .1 .6对面积为 5 0 0 ,1 0 0 0和 2 0 0 0 m2 ,高度为 3和 5 m的地下车库 ,在不同机械排烟量条件下的火灾及烟气发展过程进行了模拟计算 .研究结果表明 ,在一定时间内保持安全逃生和救灾的有利条件 ,其实际所需的排烟量 (或换气次数 )与车库面积、层高和火灾负荷条件有关 .认为目前规范中将排烟风机的最大工作温度定为 2 80℃是合理的 ,但挡烟垂壁的高度 0 .5
Using the heat releasing rate model of car fire experiments and multi-compartment fire modeling software CFAST 3.1.6, the development process of car fire and smoke in underground garages, with a area of 500, 1000 or 2000 m 2 and a height of 3 or 5m, was simulated and calculated respectively under the conditions of different discharge quantities of smoke. The research result shows that the actually required mechanical exhaustion (or exchange times of air) to meet the needs of evacuation and fire fight in determined time is related to the garage area, floor height and fire load, and that it is reasonable for the current criterion to define the maximal working temperature of smoke-venting fans as 280 ℃, but it is a little smaller to specify the smoke screen height as 0.5 m.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2003年第1期12-17,共6页
Journal of China University of Mining & Technology
