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Critical conditions for wood ignition

机译:木材点火的关键条件

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摘要

An article in press with this journal an accessible via Science Direct [1] purports to be concerned with spontaneous heating of wood at different altitudes. The idea is an interesting one, but could have been addressed much more directly. The dependence of the critical condition for ignition on oxygen concentration is given in the authoritative text by Bowes [2] and depends on the quantity γ defined by:rnγ = E/R(T_0)_(crit)~2 × (QDc_o/k) wherernE = activation energy (J mol~(-1))rnR = Universal gas constant (8.314J K~(-1) mol~(-1))rn(T_0)_(crit) = critical ambient temperature for ignition (K)rnQ = quantity of heat released per mole of oxygen used uprn(J mol~(-1))rnD = diffusion coefficient of oxygen into the heating mediumrn(m~2 s~(-1))rnk = thermal conductivity (W m~(-1) K~(-1))rnC_o = concentration of oxygen (mol m~(-3)).
机译:可通过Science Direct [1]访问该期刊的一篇文章,该文章声称与不同高度的木材自发加热有关。这个想法很有趣,但可以直接解决。 Bowes [2]在权威文章中给出了点火临界条件对氧浓度的依赖性,并且取决于γ的定义:rnγ= E / R(T_0)_(crit)〜2×(QDc_o / k )其中rnE =活化能(J mol〜(-1))rnR =通用气体常数(8.314JK〜(-1)mol〜(-1))rn(T_0)_(crit)=点火的临界环境温度(K )rnQ =每摩尔使用的氧气释放的热量uprn(J mol〜(-1))rnD =氧气在加热介质中的扩散系数rn(m〜2 s〜(-1))rnk =导热系数(W m 〜(-1)K〜(-1))rnC_o =氧气浓度(mol m〜(-3))。

著录项

  • 来源
    《Fuel》 |2010年第7期|p.1744|共1页
  • 作者

    J.C. Jones;

  • 作者单位

    School of Engineering, University of Aberdeen, AB24 3UE, United Kingdom;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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