Modelling the drying of a twig of "yerba maté" considering as a composite material Part II: Mathematical model

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A drying model was developed for a composite material using the finite-difference method and applied to drying of twigs of "yerba maté". Drying experiments were carried out in a convective dryer with twigs with and without bark for three different diameters: 2.5 × 10-3, 5.0 × 10-3 and 7.5×...

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Autores principales: Schmalko, M.E., Alzamora, S.M.
Formato: JOUR
Materias:
"Yerba maté"
Drying
Modelling
Moisture diffusion coefficient
Diffusion
Error analysis
Finite difference method
Moisture
Thermal effects
Twigs
Xylem
Composite materials
Croton ovalifolius
Ilex
Ilex paraguariensis
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02608774_v67_n3_p267_Schmalko
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_02608774_v67_n3_p267_Schmalko
record_format dspace
spelling todo:paper_02608774_v67_n3_p267_Schmalko2023-10-03T15:12:17Z Modelling the drying of a twig of "yerba maté" considering as a composite material Part II: Mathematical model Schmalko, M.E. Alzamora, S.M. "Yerba maté" Drying Modelling Moisture diffusion coefficient Diffusion Drying Error analysis Finite difference method Moisture Thermal effects Moisture diffusion coefficient Twigs Xylem Composite materials Croton ovalifolius Ilex Ilex paraguariensis A drying model was developed for a composite material using the finite-difference method and applied to drying of twigs of "yerba maté". Drying experiments were carried out in a convective dryer with twigs with and without bark for three different diameters: 2.5 × 10-3, 5.0 × 10-3 and 7.5×10-3 m. Air temperature varied between 70 and 130°C. Moisture diffusion coefficient value was used to fit the developed model. This parameter was found to be dependent on temperature, moisture content and twig diameter. Moisture diffusion coefficients for xylem were greater than those found for bark. Their values varied between 1.7 × 10-10 and 8.3 × 10-9 m2/s for xylem and 8.7 × 10-12 and 4.7 × 10-9 m2/s for bark. Minor values of mean percent error were obtained dividing experiences in two groups: below and above 100°C. © 2004 Elsevier Ltd. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02608774_v67_n3_p267_Schmalko
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic "Yerba maté"
Drying
Modelling
Moisture diffusion coefficient
Diffusion
Drying
Error analysis
Finite difference method
Moisture
Thermal effects
Moisture diffusion coefficient
Twigs
Xylem
Composite materials
Croton ovalifolius
Ilex
Ilex paraguariensis
spellingShingle "Yerba maté"
Drying
Modelling
Moisture diffusion coefficient
Diffusion
Drying
Error analysis
Finite difference method
Moisture
Thermal effects
Moisture diffusion coefficient
Twigs
Xylem
Composite materials
Croton ovalifolius
Ilex
Ilex paraguariensis
Schmalko, M.E.
Alzamora, S.M.
Modelling the drying of a twig of "yerba maté" considering as a composite material Part II: Mathematical model
topic_facet "Yerba maté"
Drying
Modelling
Moisture diffusion coefficient
Diffusion
Drying
Error analysis
Finite difference method
Moisture
Thermal effects
Moisture diffusion coefficient
Twigs
Xylem
Composite materials
Croton ovalifolius
Ilex
Ilex paraguariensis
description A drying model was developed for a composite material using the finite-difference method and applied to drying of twigs of "yerba maté". Drying experiments were carried out in a convective dryer with twigs with and without bark for three different diameters: 2.5 × 10-3, 5.0 × 10-3 and 7.5×10-3 m. Air temperature varied between 70 and 130°C. Moisture diffusion coefficient value was used to fit the developed model. This parameter was found to be dependent on temperature, moisture content and twig diameter. Moisture diffusion coefficients for xylem were greater than those found for bark. Their values varied between 1.7 × 10-10 and 8.3 × 10-9 m2/s for xylem and 8.7 × 10-12 and 4.7 × 10-9 m2/s for bark. Minor values of mean percent error were obtained dividing experiences in two groups: below and above 100°C. © 2004 Elsevier Ltd. All rights reserved.
format JOUR
author Schmalko, M.E.
Alzamora, S.M.
author_facet Schmalko, M.E.
Alzamora, S.M.
author_sort Schmalko, M.E.
title Modelling the drying of a twig of "yerba maté" considering as a composite material Part II: Mathematical model
title_short Modelling the drying of a twig of "yerba maté" considering as a composite material Part II: Mathematical model
title_full Modelling the drying of a twig of "yerba maté" considering as a composite material Part II: Mathematical model
title_fullStr Modelling the drying of a twig of "yerba maté" considering as a composite material Part II: Mathematical model
title_full_unstemmed Modelling the drying of a twig of "yerba maté" considering as a composite material Part II: Mathematical model
title_sort modelling the drying of a twig of "yerba maté" considering as a composite material part ii: mathematical model
url http://hdl.handle.net/20.500.12110/paper_02608774_v67_n3_p267_Schmalko
work_keys_str_mv AT schmalkome modellingthedryingofatwigofyerbamateconsideringasacompositematerialpartiimathematicalmodel
AT alzamorasm modellingthedryingofatwigofyerbamateconsideringasacompositematerialpartiimathematicalmodel
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