Experimental study on smoke temperature distribution under different power conditions in utility tunnel

被引：32

作者：

Zhao, Yong-chang ^{[1
,2
,3
]}

Zhu, Guo-qing ^{[1
,2
,3
]}

Gao, Yun-ji ^{[1
,2
,3
]}

机构：

[1] China Univ Min & Technol, Sch Safety Engn, Xuzhou 221116, Jiangsu, Peoples R China

[2] China Univ Min & Technol, Key Lab Gas & Fire Control Coal Mines, Xuzhou 221116, Jiangsu, Peoples R China

[3] China Univ Min & Technol, Fire Res inst, Xuzhou 221116, Jiangsu, Peoples R China

来源：

CASE STUDIES IN THERMAL ENGINEERING | 2018年 / 12卷

基金：

国家重点研发计划;

关键词：

Experiment; Temperature distribution; Utility tunnel; Tunnel fire; Pool fire; LONGITUDINAL VENTILATION; NEAR-FIELD; FIRE; FLOW; SIMULATION;

D O I：

10.1016/j.csite.2018.03.002

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The longitudinal and cross-sectional temperature distributions are measured in reduced-scale tunnel fire experiments with different fire power conditions. Field tests are carried out in a utility tunnel with pool fires. The experiments studied the ceiling temperature along the tunnel centerline, the vertical temperature below the ceiling and the temperature in the direction of radian in the same section with the fire source. The results from the burning experiments are analyzed. The longitudinal temperature distribution along the tunnel can be fairly well fitted by exponential equations. And the thermal radiation of the smoke layer has a significant effect on the temperature below the ceiling. In addition, in the direction of tunnel radian, the temperature growth rate of the region above 45 degrees are obviously faster and the temperature is higher. Therefore, to shorten the response time of the detector to the fire, it is desirable to place the heat and smoke detectors at the top of the utility tunnel.

引用

页码：69 / 76

页数：8

共 18 条

[1]

[Anonymous], 2012, THESIS

[2]

[Anonymous], 2006, THESIS

[3]

Bailey JL, 2002, FIRE PROTECT ENG, V12, P139

[4] Experimental and numerical study of fire in a midscale test tunnel [J].