| 地铁隧道火灾双点排烟烟气温度分布特性的试验研究 |
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| 引用本文： | 雷凯荣,覃新,赵鹏,高波,袁中原.地铁隧道火灾双点排烟烟气温度分布特性的试验研究[J].制冷与空调(四川),2019(3):319-322,327. |
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| 作者姓名： | 雷凯荣 覃新 赵鹏 高波 袁中原 |
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| 作者单位： | 青岛地铁集团有限公司工程建设分公司;中国中铁二院工程集团有限责任公司;西南交通大学机械工程学院 |
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| 摘 要： | 基于1:20的模型试验,研究了火源热释放率、排烟量和风口长度对地铁隧道火灾双点排烟烟气温度分布特性的影响。结果表明:火源段烟气温度随着火源热释放率的增加而显著增加,在排烟作用下非火源段烟气温度急剧下降;排烟量和风口长度对火源段烟气温度几乎没有影响;排烟量对非火源段烟气温度影响较大,而风口长度对非火源段烟气温度影响不大。
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| 关 键 词： | 地铁隧道火灾 双点排烟 模型试验 烟气温度分布 |
An Experimental Study on the Smoke Temperature Distribution in a Subway Tunnel Fire with Two-point Extraction Ventilation System |
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| Lei Kairong,Qin Xin,Zhao Peng,Gao Bo,Yuan Zhongyuan.An Experimental Study on the Smoke Temperature Distribution in a Subway Tunnel Fire with Two-point Extraction Ventilation System[J].Refrigeration & Air-condition,2019(3):319-322,327. |
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| Authors: | Lei Kairong Qin Xin Zhao Peng Gao Bo Yuan Zhongyuan |
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| Affiliation: | (Qingdao Metro,Qingdao,266000;China Railway Eryuan Engineering Group Co.,Ltd,Chengdu,610031;School of Mechanical Engineering,Southwest Jiaotong University,Chengdu,610031) |
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| Abstract: | This study investigated the effects of heat release rate, exhaust volumetric flow rate and extraction vent length on the smoke temperature distribution based on a series of 1/20 reduced-scale experiments. Experimental results show that the smoke temperature significantly increases with the heat release rate in the fire section while it sharply decreases in the non-fire section. Exhaust volumetric flow rate and extraction vent length have no effect on the smoke temperature distribution in the fire section. Exhaust volumetric flow rate has a significant influence on the smoke temperature distribution in the non-fire section. Meanwhile, the effect of extraction vent length on the smoke temperature distribution in the non-fire section is limited. |
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| Keywords: | subway tunnel fires two-point extraction ventilation system reduced-scale experiment smoke temperature distribution |
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