Abstract
Propagation of the ignition front against airflow in packed beds of
different wood fuels has been studied. The results of experiments carried out
with pellets and mixtures of wood chips and sawdust are presented and compared
with earlier experiments with different wood fuels. Increase in particle
density and size was found out to widen the range of possible airflow rates,
and transfer the maximum rate of ignition front propagation toward fuel lean
conditions. Increase in the average sphericity of particles decreases the
porosity of the bed. Mixing of small and large particles seems to be
advantageous for combustion so that small particles change the optimum airflow
rate to fuel rich conditions and large particles widen the usable range of
airflow rates. A correlation was found for the maximum rate of ignition front
propagation in beds of wood fuels.
| Original language | English |
|---|---|
| Pages (from-to) | 676-686 |
| Journal | Energy & Fuels |
| Volume | 16 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2002 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- biomass
- biofuels
- wood fuels
- combustion
- ignition
- air flow
- wood chips
- sawdust
- particles
- packed beds
- models
- emissions
