Experimental study on elevated fires in a ceiling vented compartment

被引：0
作者：
Jiaqing Zhang
Shouxiang Lu
Qiang Li
Changhai Li
Man Yuan
Richard Yuen
机构：
[1] University of Science and Technology of China,State Key Laboratory of Fire Science
[2] City University of Hong Kong,Department of Civil and Architectural Engineering
[3] USTC-CityU Joint Advanced Research Centre,undefined
来源：
Journal of Thermal Science | 2013年 / 22卷
关键词：
Compartment fire; Ceiling vent; Elevated fires; Fire hazard;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The impacts of elevation on fires in a ceiling vented compartment were investigated experimentally. The flame behavior of elevated fires was recorded. Various parameters including the fuel mass loss rate, the light extinction coefficient, the oxygen concentration and the gas temperature were measured. Results indicated that the variations of the flame behavior were consistent with that of the fuel mass loss rate. The fire location significantly impacted the light extinction coefficient, the oxygen concentration and the gas temperature, which all showed distinct stratification phenomena. For a higher elevated fire, the average fuel loss rate and the overall light extinction coefficient were smaller, the oxygen concentration was higher and the gas temperature was lower. In addition, the smoke descending was slower. From the perspective of those parameters the fire was less hazardous if the fire was elevated higher, which was totally different from the elevated fires in closed compartments.
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页码：377 / 382
页数：5
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