Abstract
A model of drying of fixed and moving bed in cross-flow is presented. A
single particle model described as a multiple moving boundary problem
applicable for an icy wood particle is proposed. The simultaneous drying and
melting are described by shrinking cores and the effect of thermal storage is
taken into account approximately. The results with both the single particle
and the bed model compare favourably with the reported laboratory
measurements. The drying of a deep fixed bed is a two-stage process. A
constant rate of drying period with saturated outlet air at constant
temperature is followed by a decreasing rate of drying with increasing air
outlet temperature and decreasing degree of saturation. The bed modelling is
performed to support the development work of a boiler plant using a dryer.
Practical operation of dryers within the boiler plants is discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 1077-1099 |
| Journal | Drying Technology |
| Volume | 20 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2002 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- biomass
- biofuels
- wood fuelas
- wood chips
- drying
- dryers
- modelling