| 不同热交换条件下阴燃温度场变化规律研究 |
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| 引用本文： | 余明高,孟牒,路长,董艳军,赵万里.不同热交换条件下阴燃温度场变化规律研究[J].中国矿业大学学报,2011(5). |
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| 作者姓名： | 余明高 孟牒 路长 董艳军 赵万里 |
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| 作者单位： | 河南理工大学安全科学与工程学院; |
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| 基金项目： | 国家自然科学基金项目(50974055,50906023); 河南省基础与前沿技术研究计划项目(092300410045,082300463205); 河南理工大学学位论文创新基金 |
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| 摘 要： | 通过搭建小尺寸实验平台,选取不同长度和厚度的材料,改变与外界的换热条件,探讨聚氨酯泡沫材料在阴燃及向明火转化过程中温度场的变化规律.结果表明:在不同热交换条件下,阴燃区域温度场变化很大,温度增加幅度达到150℃.增加聚氨酯泡沫材料的长度和厚度,阴燃区域温度升高速度加快,容易达到气相反应所需的温度,并转为明火燃烧.聚氨酯泡沫材料在改变长度和厚度后以15℃冷水、80℃热水和空气作为换热条件时,对外的散热量分别为:2001.37,1010.8,108.28,1779.28,898.66,95.87,1601.62,809.16,87.15 kJ.
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| 关 键 词： | 阴燃 温度场 热交换条件 聚氨酯泡沫 |
Temperature distribution in smoldering polyurethane foam as a function of heat exchange rate |
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| YU Ming-gao,MENG Die,LU Chang,DONG Yan-jun,ZHAO Wan-li.Temperature distribution in smoldering polyurethane foam as a function of heat exchange rate[J].Journal of China University of Mining & Technology,2011(5). |
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| Authors: | YU Ming-gao MENG Die LU Chang DONG Yan-jun ZHAO Wan-li |
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| Affiliation: | YU Ming-gao,MENG Die,LU Chang,DONG Yan-jun,ZHAO Wan-li(School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo,Henan 454003,China) |
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| Abstract: | A small scale experimental apparatus was used to investigate the temperature distribution in smoldering polyurethane foam.The transition from smoldering to flame was investigated by changing material length or thickness,or changing the rate of heat loss to the environment.The temperature in the smoldering areas was observed to be strongly dependent on heat exchange.Increased lengths or thicknesses of the foam caused the temperature to rise more quickly so that it became easy to reach the temperature where g... |
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| Keywords: | smoldering temperature distribution heat exchange polyurethane foam |
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