石炭の常温域からの自然発火: 等価酸化時間の導入による数値解析

Kyuro Sasaki, Hiroshi Miyakoshi, Kazuo Otsuka

研究成果: Contribution to journalArticle査読

7 被引用数 (Scopus)

抄録

This paper describes calculations concerning temperature-rise and the oxygen diffusion processes of a coal seam in the low temperature range.
The temperature rise of coal occurs by the accumulation of the heat produced by oxidation on the coal surface. The heat generation rate is a function of temperature, oxygen concentration and the exposure time of coal in an oxygen atmosphere.
For the case where the oxygen concentration and the temperature around the coals vary with time, we have proposed a new method for estimating heat generation rate. We have called this new method “exposure equivalent-time”. This new method was applied successfully to simulate the temperature and the oxygen concentration in the coal seam model whose open-ends are exposed to the air. The finite-difference method was used to solve the equations of heat conduction and diffusion of air.
寄稿の翻訳タイトルSpontaneous combustion of coal in the low temperature range: Application of exposure equivalent-time to numerical analysis
本文言語Japanese
ページ(範囲)771-775
ページ数5
ジャーナルNihon Kogyokaishi
103
1197
DOI
出版ステータス出版済み - 1987

All Science Journal Classification (ASJC) codes

  • Fuel Technology
  • Safety, Risk, Reliability and Quality
  • Earth and Planetary Sciences(all)

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