THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

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Souhila Kadem

,

Ramdane Younsi

,

Azziz Lachemet

COMPUTATIONAL ANALYSIS OF HEAT AND MASS TRANSFER DURING MICROWAVE DRYING OF TIMBER

ABSTRACT
The need for improvement in engineering design and process optimization for microwave drying of wood has stimulated the development of computer simulation techniques to predict temperature and moisture history and distribution wood sample. A three-dimensional comprehensive heat and mass transfer model was developed to simulate the free liquid, vapor, and bound water movement including consideration of internal heat generation in microwave drying of yellow poplar specimens. The model was solved using the finite element analysis with FEMLsoftware. The model predictions compared favorably with predicted and experimental solutions. The effect of changes of the most important parameters on the predictions of the model is also presented. The results showed that the variations of irradiation time, microwave power level and sample thickness played an important role in overall drying kinetics.
KEYWORDS
microwave drying, wood, heat and mass transfer, porous media, modelling
PAPER SUBMITTED: 2014-01-09
PAPER REVISED: 2014-04-04
PAPER ACCEPTED: 2014-04-04
PUBLISHED ONLINE: 2014-05-04
DOI REFERENCE: https://doi.org/10.2298/TSCI140109055K
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE Issue 5, PAGES [1447 - 1455]
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Computational analysis of heat and mass transfer during microwave drying of timber

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