| Experimental studies on interaction of water mist with class K fires |
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| 作者姓名： | FANG Yudong ZHANG Yongfeng LIN Lin LIAO Guangxuan HUANG Xin CONG Beihua |
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| 作者单位： | University of Science ＆ Technology of China, State Key Laboratory of Fire Science, Hefei 230026, China |
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| 基金项目： | Acknowledgements The authors would like to thank Prof. Qin Jun for his useful suggestion, discussion and help. This work was supported by the China National Key Basic Research Special Funds （Grant No. 2001CB409600）, the National Natural Science Foundation of China （Grant No. 50323005） and the Anhui Development Fund of Person with Ability （Grant No. 2003Z019）. |
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| 摘 要： | Interaction of water mist with cooking oil fires is studied experimentally and theoretically. A LDV/APV system is used to measure the velocity and diameter of water mist at different pressures in the experiments,and the effect of water mist velocity and diameter on fire extinguishment efficiency is investi-gated. The experimental results show that water mist has excellent surface cooling effect; it can control and extinguish cooking oil fires quickly without re-ignition. The critical temperature (Tfo) is calculated by energy balance equation,and the fire plume momentum is calculated and compared with that of water mist in order to determine the critical velocity (νwy) of fire extinguishment. This paper provides references for cooking oil fires extinguishment with water mist.
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| 关 键 词： | 水雾 K级火灾 食用油 油类燃烧 重新起火 灭火效果 |
| 收稿时间： | 2006-02-19 |
| 修稿时间： | 2006-02-192006-04-13 |
Experimental studies on interaction of water mist with class K fires |
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| FANG Yudong ZHANG Yongfeng LIN Lin LIAO Guangxuan HUANG Xin CONG Beihua.Experimental studies on interaction of water mist with class K fires[J].Chinese Science Bulletin,2006,51(24):3053-3058. |
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| Authors: | Yudong Fang Yongfeng Zhang Lin Lin Guangxuan Liao Xin Huang Beihua Cong |
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| Institution: | (1) State Key Laboratory of Fire Science, University of Science & Technology of China, Hefei, 230026, China |
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| Abstract: | Interaction of water mist with cooking oil fires is studied experimentally and theoretically. A LDV/APV system is used to
measure the velocity and diameter of water mist at different pressures in the experiments, and the effect of water mist velocity
and diameter on fire extinguishment efficiency is investigated. The experimental results show that water mist has excellent
surface cooling effect; it can control and extinguish cooking oil fires quickly without re-ignition. The critical temperature
(Τ
fo) is calculated by energy balance equation, and the fire plume momentum is calculated and compared with that of water mist
in order to determine the critical velocity (ν
wy) of fire extinguishment. This paper provides references for cooking oil fires extinguishment with water mist. |
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| Keywords: | water mist cooking oil fires re-ignition combustion-supporting |
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