Journal
APPLIED THERMAL ENGINEERING
Volume 128, Issue -, Pages 1062-1073Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2017.09.070
Keywords
Single biomass particles; Moisture evaporation; CFD modelling
Funding
- Government of Spain [ENE2015-67439-R]
- Edith Cowan University International Postgraduate Research Scholarship (ECU-IPRS)
Ask authors/readers for more resources
The understanding of the behaviour of biomass particles is important, therefore, modelling different sub-processes of biomass thermal conversion is derived during these years. This paper addresses a comparative CFD based analysis of different drying models. Several sub-models are simulated to investigate the evaporation process of different geometries based on standard densified wood pellets. In order to predict the transient evolution (moisture to dry wood) of the wood particles, transport equations (energy and moisture evaporation) are solved considering the reaction heat loss, effective thermal conductivity, specific heat capacity, and radiative and convective heat transfer. These models are compared with the previous experimental and numerical works. The Heat Sink model demonstrates the closest agreement with the reported data based on a cylindrical shape of biomass particle. This model is further analyzed by increasing the moisture content and decreasing the surface area exposed to radiative and convective heat taking into consideration the particle density, effective thermal conductivity and specific heat capacity. The results show a remarkable decrease in drying time when the particle is fully exposed to external radiative and convective heat with the lowest moisture content. (C) 2017 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available