摘要
根据单辆车热释放速率峰值为8 MW的参考曲线,对地下车库一个存车单元3个车位的火灾场景进行FDS数值模拟。对比模拟国内外规范规定的不同自动喷水强度下的辐射热、热释放速率、温度等的变化情况。结果表明,无自喷时可发生火灾蔓延,有自喷时随着喷水强度的增大辐射热减小,控火时间缩短,温度下降加快。综合考虑控灭火可靠性和经济性,建议设计喷水强度为6.0L/(min·m2)。
The underground garage fire were simulated by FDS based on the reference curve which peak heat release rate of sin gle burning car was 8 MW. The fire scene was a parking unit with 3 parking lots. The radiant heat, heat release rate and temperature changes with different automatic sprinkler densities from domestic and foreign garage criterions were compared. It was found that fire could spread without sprinkler; the radiant heat decreased, fire control time became shorter and the tern peralure dropped faster with the increase of sprinkler density. Considering reliability of fire control and suppression and econ omy, density design parameter of 6.0 L/（min · m2 ） is recom mended.
出处
《消防科学与技术》
CAS
北大核心
2016年第1期80-84,共5页
Fire Science and Technology
关键词
车库火灾
喷水强度
辐射热
热释放速率
控火时间
garage fire
sprinkler density
radiant heat
heat re lease rate
fire control time
