THERMAL SCIENCE

International Scientific Journal

Vangelče Mitrevski

,

Aleksandar Dedinac

,

Cvetanka Mitrevska

,

Slobodan Bundalevski

,

Tale Geramitcioski

,

Vladimir Mijakovski

MATHEMATICAL MODELLING OF FAR-INFRARED VACUUM DRYING OF APPLE SLICES

ABSTRACT
In this study, a mathematical model of far-infrared vacuum drying of shrinkage body is presented. The system of two coupled PDE for heat and mass transfer with appropriate initial and boundary conditions are solved numerically with used of the finite difference method. On the basis of the numerical solutions a computer program for calculation of temperature profiles, transient moisture content, mid-plane temperature, and the volume averaged moisture content changes for different drying regime was developed. For verification of a mathematical model a series of numerical calculations were carried out with experimental conditions similar to those in the realized experiments of far-infrared vacuum drying of apple slices. Very good agreement between the experimental and numerical temperature and moisture content changes during the drying was obtained.
KEYWORDS
mathematical modelling, far-infrared, vacuum, drying, apple
PAPER SUBMITTED: 2018-02-05
PAPER REVISED: 2018-04-17
PAPER ACCEPTED: 2018-04-18
PUBLISHED ONLINE: 2018-05-12
DOI REFERENCE: https://doi.org/10.2298/TSCI180205143M
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Issue 1, PAGES [393 - 400]
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Mathematical modelling of far-infrared vacuum drying of apple slices

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