Influence of excess fuel from timber lined compartments
Influence of excess fuel from timber lined compartments
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来自木衬隔间的多余燃料的影响
DOI：
10.1016/j.conbuildmat.2019.117355
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发表时间：
2020
影响因子：
7.4
通讯作者：
Bartlett A
中科院分区：
文献类型：
--
作者：
Bartlett A
外部火灾蔓延是工程师在建筑设计中面临的一个关键风险。这可以通过暴露表面的热通量来量化，这取决于外部火焰羽流中的条件。根据过量燃料系数或全球当量比(GER)的定义，以裸露的木材表面的形式引入额外的燃料可以增加外部燃烧释放的能量。本文综述了最近探索木材暴露对室内火灾动力学影响的三个实验系列，并利用实验数据计算了每个实验的GER。当假设燃烧效率等于1时，发现全球当量比范围为0.58至3.00；这些当量比对应于一个隔室只有一个裸露的木材表面和一个隔室有三个裸露的木材表面。一个“燃烧因子”已经被引入，作为一种可能的方法来将GER与隔室的性质联系起来。结果表明，只有舱室表面燃烧时，燃烧系数与GER之间存在较好的相关性(R2>； )，而当舱内其他燃料同时燃烧时，这种相关性不成立。
External fire spread is a key risk faced by engineers in the design of buildings. This can be quantified by heat flux to an exposed surface, which is dependent on the conditions in the external fire plume. Introducing additional fuel in the form of exposed timber surfaces is shown to increase the energy released by external flaming, as defined by an excess fuel factor or Global Equivalence Ratio (GER). This paper presents a review of three recent experimental series exploring the effects of exposed timber on compartment fire dynamics, and uses experimental data to calculate the GER for each experiment. When combustion efficiency was assumed equal to one, Global Equivalence Ratios were found to range from 0.58 to 3.00; these corresponded to a compartment with a single exposed timber surface and a compartment with three exposed timber surfaces. A “burning factor” has been introduced to as a possible method to relate GER to the properties of the compartment. It is found that a relatively good correlation (R2> 0.9) is achieved between burning factor and GER when only the compartment surfaces are burning, but that the correlation does not hold when other fuel load is also burning within the compartment.
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影响因子：
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作者：
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影响因子：
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DOI：
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发表时间：
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期刊：
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影响因子：
--
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