摘要
以某中小型餐厅为研究对象,采用PyroSim火灾模拟技术,正交试验法设计模拟工况,并通过定性分析和动态模拟结合的方法研究了在自然通风的情况下不同开窗面积和火源功率下的火灾过程,从火场温度、能见度和CO浓度这3个角度分析发生火灾烟气的蔓延规律。结果表明:增加开窗面积在相同火源功率下,可显著减少室内烟气含量,并延缓烟气的扩散速度,有助于人员的安全疏散;火源功率不同时,烟气蔓延扩散规律大致相同,温度和CO浓度随着功率的增加而增大,能见度随之降低。
Taking a small and medium-sized restaurant as the research subject,PyroSim fire simulation technology and the or-thogonal test method were used to design the simulation conditions.The fire process under different window areas and fire source power with natural ventilation was studied by combining qualitative analysis and dynamic simulation.The spreading law of fire smoke was analyzed from different angles such as temperature,visibility,and CO concentration.The results show that,with the same fire source power,the larger the window opening area is,the smoke volume can be reduced significantly,the diffusion of smoke can be delayed,and the safety evacuation of personnel can be facilitated.When the power of the fire source is different,the law of smoke spread and diffusion is roughly the same,the temperature and CO concentration increase with the power,while the visibility decreases.
作者
马鸿轩
战乃岩
谷城放
MA Hongxuan;ZHAN Naiyan;GU Chengfang(College of Emergency Science and Engineering,Jilin Jianzhu University,Changchun 130118,China)
出处
《技术与市场》
2024年第9期140-147,159,共9页
Technology and Market
关键词
中小型餐厅
火灾
数值模拟
烟气蔓延
安全疏散
small and medium-sized restaurant
fire
numerical simulation
smoke spread
safe evacuation
