| Title |
A novel method for convective drying rate estimation in a deep fixed porous material bed / |
| Authors |
Skarbalius, Gediminas ; Džiugys, Algis ; Misiulis, Edgaras ; Navakas, Robertas |
| DOI |
10.1016/j.powtec.2022.117499 |
| Full Text |
|
| Is Part of |
Powder Technology.. Amsterdam : Elsevier BV. 2022, 404, art. no. 117499, p. 1-12.. ISSN 0032-5910 |
| Keywords [eng] |
Thermodynamics ; Biomass ; Fixed beds ; Convective drying ; Drying rate |
| Abstract [eng] |
In this paper, we propose a novel approach to describe the convective drying process of deep fixed porous material beds during the constant-rate drying period, which is based on the equation describing the heat power conservation within the drying zone. In addition, we propose a novel iterative method to solve the equation, which evaluates the outlet air temperature and the drying rate for the bed with given inlet air parameters. The validity of the proposed approach is examined against experimental and CFD numerical modelling data for two cases of biomass beds, namely, sawdust and barley grain, which represent typical porous material drying problems. Furthermore, the analysis of the conservation equation shows that the drying rate of the bed is proportional to the inlet air mass flow rate and is a function of the initial moisture content of the bed; however, it is independent of the bed volume. |
| Published |
Amsterdam : Elsevier BV |
| Type |
Journal article |
| Language |
English |
| Publication date |
2022 |
