Propagation of the ignition front in beds of wood particles

Jaakko Saastamoinen (Corresponding Author), Raili Taipale, Mika Horttanainen, Pertti Sarkomaa

Research output: Contribution to journalArticleScientificpeer-review

121 Citations (Scopus)

Abstract

The speed of the propagation of the ignition front downwards against the air flow in a fixed bed of burning wooden particles has been studied. The ignition speed reaches a steady state soon after ignition at the surface, if the inlet air temperature is the same as the initial temperature of the fixed bed. Modeling of the quasi-steady-state speed of propagation of the ignition front is considered. The effects of the flow rate of air, moisture, particle size, density, and wood species on the velocity of the ignition front and on the maximum temperature in the bed are studied experimentally and interpreted by modeling. A maximum speed of propagation was observed with a specific air rate. Correlations for estimating the velocity of the ignition front and maximum temperature in the bed are presented.

Original languageEnglish
Pages (from-to)214 - 226
Number of pages13
JournalCombustion and Flame
Volume123
Issue number1-2
DOIs
Publication statusPublished - 2000
MoE publication typeA1 Journal article-refereed

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Keywords

  • biomass
  • biofuels
  • wood fuels
  • combustion
  • ignition
  • fixed beds

Cite this

Saastamoinen, J., Taipale, R., Horttanainen, M., & Sarkomaa, P. (2000). Propagation of the ignition front in beds of wood particles. Combustion and Flame, 123(1-2), 214 - 226. https://doi.org/10.1016/S0010-2180(00)00144-9