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浙江大学学报(工学版)
化学与环境工程     
传统控烟设施对空气幕阻烟性能的影响
张晓涛,谭翀,陆愈实
中国地质大学 工程学院,湖北 武汉430074
Influence of traditional smoke control facilities on smoke confinement performance of air curtain
ZHANG Xiao tao, TAN Chong,LU Yu shi
Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
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摘要:

以实际建筑走廊结构为基础,利用火灾动力学模拟软件(FDS)构建数值模型;研究在火灾情况下,机械排烟和挡烟垂壁2种传统控烟设施对空气幕两侧的临界压差、隔热效率以及对于温度和一氧化碳的阻隔性能的影响.实验结果表明,随着排烟口风速的增加,机械排烟对空气幕的临界压差提升不明显,但对隔热效率及温度和一氧化碳的阻隔效果提升显著.挡烟垂壁对空气幕临界压差影响显著.当火灾规模较小时,挡烟垂壁可以提高空气幕隔热效率及温度和一氧化碳的阻隔效果|随着火灾规模的增大,空气幕阻烟性能出现突降,挡烟垂壁此时甚至会降低空气幕的阻烟性能|挡烟垂壁高度越小,性能突降现象出现越早.

Abstract:

The numerical model was constructed by fire dynamic simulator (FDS) software based on actual corridor architectural structure. The influence was analyzed that of traditional smoke control facilities, including mechanical smoke extraction and hung wall, on critical pressure difference, thermal insulation efficiency, confine effect of temperature and carbon monoxide of air curtain under fire condition. The experimental results show that with the increase of smoke exhaust rate, mechanical smoke extraction insignificantly affects the critical pressure, which significantly increases thermal insulation efficiency and the confine effect of temperature and carbon monoxide. The hung wall obviously affects the critical pressure of air curtain. The thermal insulation efficiency and confine effect of temperature and carbon monoxide of air curtain is obviously promoted under small-scale fire. However, with the fire scale increasing, sudden drop in performance of air curtain happens; even the hung wall would decrease the performance of air curtain. The ealier the sudden drop in performance appears, the lower the height of hung wall is.

出版日期: 2016-09-22
:  X 928.7  
基金资助:

国家自然科学基金资助项目(61202197).

通讯作者: 陆愈实,男,教授. ORCID: 0000-0002-1083-6309.     E-mail: cuglys@foxmail.com
作者简介: 张晓涛(1987-),男,博士生,从事安全仿真与阻烟研究. ORCID: 0000-0003-1667-1012. E-mail:smiletao@163.com
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引用本文:

张晓涛,谭翀,陆愈实. 传统控烟设施对空气幕阻烟性能的影响[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2016.09.14.

ZHANG Xiao tao, TAN Chong,LU Yu shi. Influence of traditional smoke control facilities on smoke confinement performance of air curtain. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2016.09.14.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2016.09.14        http://www.zjujournals.com/eng/CN/Y2016/V50/I9/1738

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