Spontaneous ignition of dust deposits. Ignition temperature and induction time.

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Other Title
  • 粉体層の自然発火について　　発火温度と誘導時間
  • Ignition Temperature and Induction Time
  • 発火温度と誘導時間

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Description

The temperature distribution in the combustible dust deposits placed in hot environments is described by a differential equation, according to the thermal theory. The temperature profiles of the dust deposits at any time could be calculated at various ambient temperatures by solving the equation using the finite element method. Thus, the minimum ambient temperature for ignition, which is defined as the ignition temperature, and the induction time to ignition could be determined. With a cylindrical cork dust deposit (volume=3.2×10-3m3, radius=0.08m), the resulting temperature distribution in the radial direction at any time agrees well with the experimental data currently reported by Leuschke, except for extremely high ambient temperatures. Therefore, it is practicable to estimate the spontaneous ignition behavior of dust deposits by computer simulation.

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Details 詳細情報について

  • CRID
    1390282679489834752
  • NII Article ID
    130003777065
  • DOI
    10.4164/sptj.23.326
  • ISSN
    18837239
    03866157
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • OpenAIRE
  • Abstract License Flag
    Disallowed

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