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变热流对可燃物热解着火特性影响的实验研究
  • ISSN号：0253-231X
  • 期刊名称：工程热物理学报
  • 时间：2012
  • 页码：1255-1258
  • 分类：TK121[动力工程及工程热物理—工程热物理;动力工程及工程热物理—热能工程]
  • 作者机构：[1]中国科学技术大学火灾科学国家重点实验室,安徽合肥230026
  • 相关基金：国家自然科学基金重点资助项目（No.51036007）
  • 相关项目：高原低压低氧特殊环境下火灾防治的热物理问题
作者： 翟春婕|周晓冬|彭飞|杨立中|
关键词： 变热流, 着火时间, 表面温度, 质量损失, variable heat flux, ignition time, surface temperature, mass loss
中文摘要：

固体可燃物热解过程中,热流是一个重要的影响因素。本文设计了线性及平方上升两种热流,实验研究了无点火源条件下榆木及PMMA的热解着火特性,测量了着火时间、表面温度及质量损失的变化规律。结果表明,随着热流上升系数增加,着火时间均减小,榆木着火时刻的表面温度增加,PMMA基本不变,质量损失速率均增大。热流上升系数和着火时间符合较好的幂函数关系。相同热流下,着火时刻PMMA的质量损失远小于榆木的质量损失。

英文摘要：

Heat flux has an important effect on the pyrolysis of solid fuels.We designed two kinds of variable heat flux,linearly and quadratically rising heat flux.Experimental studies of ignition time, surface temperature and mass loss were conducted on the non-piloted ignition of elm and PMMA exposed to these two kinds.It indicates that with the increase of the rate of heat flux,ignition time decreases,the surface temperature of elm on the ignition time increases,while PMMA is almost the same,mass loss rate increases.The relation between the ignition time and the rate of increase of heat flux was found to follow a power function.Under the same variable heat flux,mass loss of PMMA is far less than that of elm at ignition time.

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高原低压低氧特殊环境下火灾防治的热物理问题
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期刊信息
  • 《工程热物理学报》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国工程热物理学会 中国科学院工程热物理研究所
  • 主编：徐建中
  • 地址：北京2706信箱
  • 邮编：100080
  • 邮箱：xb@mail.etp.ac.cn
  • 电话：010-62584937
  • 国际标准刊号：ISSN：0253-231X
  • 国内统一刊号：ISSN：11-2091/O4
  • 邮发代号:2-185
  • 获奖情况:
  • 中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:21026