摘要
为研究事故排烟量对核电厂火灾的影响,应用FDS软件模拟特定火源功率下,排烟量分别为0、0.5、0.8m3/s时,核电厂配电间内的火场温度及烟气浓度变化情况。研究结果表明,火灾最先对配电间上部的电缆桥架造成危害;无排烟设施时,450s时火灾烟气已扩散至整个房间;机械排烟设施可有效降低火场温度及烟气浓度造成的危害;排烟量越大,火场温度和烟气浓度降低速率越大。
In order to study the influence of smoke extraction volumes on nuclear power plant fire, using FDS, the tempera ture and smoke concentration in the distribution room was simulated under certain fire power and smoke extraction volumes of 0, 0. 5. 0. 8 m3/s. The result showed that, upper facilities were more earlier to suffer damaged by the fire; 450 s, the whole room was full of smoke when smoke extraction didn＇t ex ist; smoke concentration and temperature were reduced by smoke extraction system, and the larger smoke extraction volume, the faster the smoke concentration and temperature de-creased.
出处
《消防科学与技术》
CAS
北大核心
2016年第12期1680-1683,共4页
Fire Science and Technology
关键词
核电厂
排烟量
火灾
FDS
nuclear plant
smoke extraction volume
fire
FDS
