期刊
RENEWABLE ENERGY
卷 132, 期 -, 页码 911-920出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2018.08.053
关键词
Olive stone; Olive-tree pruning; Drying; Mathematical modelling; Effective diffusivity
资金
- Regional Government of Andalusia (FEDER Funds) [AGR-6509]
Drying kinetics of olive stone and olive-tree pruning, two important biomasses from olive culture, was experimentally assessed at six different temperatures (from 343 K to 393 K) and four sample thicknesses (from 15 to 50 mm). Analysis of the drying curves revealed that Page's model was suitable for predicting the drying characteristics of both solid biofuels. From this analysis, two new mathematical equations to describe the dependence of moisture ratio with temperature and drying time were also proposed. The values of effective water diffusivity, calculated at the falling rate period by using Fick's second law of diffusion, increased when increasing drying temperature and sample thickness. Diffusivities for olive-tree pruning (3.41 x 10(-8) 32.5 x 10(-8) m(2)/s) were almost twice higher than those for olive stone (1.87 x 10(-8) 16.4 x 10(-8) m(2)/s). (C) 2018 Elsevier Ltd. All rights reserved.
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