| 大空间内机械排烟效果的实验研究 |
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| 引用本文： | 李元洲,易亮,霍然,周允基.大空间内机械排烟效果的实验研究[J].自然灾害学报,2004,13(4):151-155. |
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| 作者姓名： | 李元洲 易亮 霍然 周允基 |
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| 作者单位： | 1. 中国科技大学火灾科学国家重点实验室,安徽,合肥,230026
2. 香港理工大学屋宇设施工程系,香港,九龙,红磡 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 在一个全尺寸的大空间火灾实验厅内,进行了不同补风口位置和补风口面积下的机械排烟试验.结果表明,由于烟气的温度较低,烟气和补充的空气较易混合,烟气和空气在交界处存在着较强的质量交换.排烟过程中,烟气是边稀释边被排放,很难和空气实现完全置换.低温烟气进行机械排烟时,区域模拟思想不适用,较难将烟气控制在理论高度.补气口位置和面积对烟气排放及火源燃烧状况具有一定的影响.
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| 关 键 词： | 大空间火灾 烟气控制 机械排烟 补气 |
| 文章编号： | 1004-4574(2004)04-0151-05 |
Experimental study on efficiency of mechanical smoke exhaust in large space buildings |
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| LI Yuan-zhou,YI Liang,HUO Ran,W.K. Chow nd Technology of China,Hefei ,China.Experimental study on efficiency of mechanical smoke exhaust in large space buildings[J].Journal of Natural Disasters,2004,13(4):151-155. |
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| Authors: | LI Yuan-zhou YI Liang HUO Ran WK Chow nd Technology of China Hefei China |
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| Institution: | LI Yuan-zhou~1,YI Liang~1,HUO Ran~1,W.K. Chow~2 nd Technology of China,Hefei 230026,China, 2.The Department of Building Services Engineering,The Hong Kong Polytechnic University,Hong Kong) |
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| Abstract: | The mechanical smoke exhaust experiments with different air-supplement conditions were conducted in a full-scale large space fire experimental hall. The results show that because the smoke temperature is lower, the smoke can mix easy with the air. There is a stronger mass exchange at the interface of the smoke and air. The smoke is diluted during the process of exhaust. The air can not displace the smoke entirely. The mechanical exhaust is difficult to control the smoke at the theoreticalheight. The location and area of air-supplement opens have effecton the smoke exhaust and fire. |
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| Keywords: | large space building fire smoke control mechanical smoke exhaust air supplement |
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