盖下列车运用库火灾工况机械排烟效果研究
Research on Mechanical Smoke Exhaust Effect of Covered Train Operation Depot under Fire Condition
胡睿 1许淑惠 1杨林1
作者信息
- 1. 北京建筑大学环境与能源工程学院,北京 100044
- 折叠
摘要
以某盖下列车运用库为例,对火灾工况下不同排烟方式的效果进行模拟分析.无喷淋装置时,与单纯采取机械排烟相比,开启射流风机辅助机械排烟可有效降低CO体积分数、烟气温度,使远离火源点的大部分区域CO体积分数低于限值.射流风机射流俯角向下7.5°时,可最大限度降低CO体积分数及烟气温度.有喷淋装置时,开启射流风机辅助机械排烟可降低CO体积分数、烟气温度,但效果不显著.从经济角度出发,对于有喷淋装置的运用库,发生火灾时,可不开启射流风机辅助机械排烟.
Abstract
Taking a covered train operation dep-ot as an example,the effect of different smoke exhaust modes under fire condition is simulated and analyzed.When there is no sprinkler device,compared with me-chanical smoke exhaust alone,turning on the jet fan to assist mechanical smoke exhaust can effectively reduce the CO volume fraction and flue gas temperature,mak-ing the CO volume fraction in most areas far from the fire source lower than the limit value.When the jet de-pression angle of the jet fan is 7.5° downward,the CO volume fraction and flue gas temperature can be mini-mized.When there is a sprinkler device,turning on the jet fan to assist mechanical smoke exhaust can reduce the CO volume fraction and flue gas temperature,but the effect is not significant.From an economic point of view,for the operation depot with sprinkler device,in the event of a fire,it is not necessary to turn on the jet fan to assist mechanical smoke exhaust.
关键词
盖下建筑/列车运用库/火灾/机械排烟/射流风机/喷淋Key words
covered building/train operation depot/fire/mechanical smoke exhaust/jet fan/spray引用本文复制引用
基金项目
住建部研究开发项目(2018-K4-009)
出版年
2024
国家科技期刊平台
NSTL
万方数据