| 细水雾系统在建筑灭火应用中的理论研究 |
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| 引用本文： | 李炎锋,李俊梅,周允基,孙育英. 细水雾系统在建筑灭火应用中的理论研究[J]. 北京工业大学学报, 2006, 32(9): 802-807 |
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| 作者姓名： | 李炎锋 李俊梅 周允基 孙育英 |
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| 作者单位： | 北京工业大学,建筑工程学院,北京,100022;香港理工大学,屋宇设备工程学系,香港 |
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| 基金项目： | 2004年敦育部留学回国人员科研启动基金资助项目(00102)，北京市科委重大科技项目(D0604004010211) |
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| 摘 要： | 为了预测细水雾系统在连续运行和间歇运行方式下有障碍火焰熄灭情况,基于受限空间内的气体成分的质量守恒和空间的能量守恒,建立了一个预测受限空间内细水雾系统灭火效果的瞬态模型．该模型对于受限空间温度、干态氧气体积分数能进行较好的预测研究;在同样的火焰情况下,采用间歇运行方式能提高灭火效果而且减小耗水量．
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| 关 键 词： | 细水雾 间歇运行 区域模型 灭火 |
| 文章编号： | 0254-0037(2006)09-0802-06 |
| 收稿时间： | 2004-09-17 |
| 修稿时间： | 2004-09-17 |
Theoretical Study of Water Mist System in Building Fire Extinguishment |
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| LI Yan-feng,LI Jun-mei,CHOW W K,SUN Yu-ying. Theoretical Study of Water Mist System in Building Fire Extinguishment[J]. Journal of Beijing Polytechnic University, 2006, 32(9): 802-807 |
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| Authors: | LI Yan-feng LI Jun-mei CHOW W K SUN Yu-ying |
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| Affiliation: | 1. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100022, China; 2.Department of Building Service Engineering, Hongkong Polytechinc University, Hong Kong, China |
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| Abstract: | A one-zone transient model is developed for obstructed fire where extinguishments primarily occur as a result of reduction in oxygen concentration due to consumption of oxygen by fire and dilution of oxygen with water vapor. The model is based on mass conservation of gas species and conservation of energy. This model is used to predict the fire extinguishments by water mist system under the continuous and cycling discharge modes. There is a good agreement between numerical and experimental results in air temperature and dry oxygen concentration. In addition, results show that cycling discharge water mist system would give more rapid extinguishment and consume less water for the obstructed fire in comparing with the continuous discharge mode. |
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| Keywords: | water mist cycling discharge zone model fire extinguishment |
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