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Type of publication: research article
Type of publication (PDB): Straipsnis konferencijos medžiagoje Clarivate Analytics Web of Science ar/ir Scopus / Article in Clarivate Analytics Web of Science or Scopus DB conference proceedings (P1a)
Field of Science: Aplinkos inžinerija / Environmental engineering (T004)
Author(s): Aboltins, Aivars;Rubina, Tatjana;Jotautienė, Eglė
Title: Diffusion coefficient estimation difficulties at the beginning of drying experiment
Is part of: Engineering for rural development [elektroninis išteklius] : 16th international scientific conference, May 24-26, 2017: proceedings. Jelgava: Latvia University of Agriculture, 2017, Vol. 16
Extent: p. 1327-1332
Date: 2017
Keywords: Drying;Diffusion coefficient;Carrot
Abstract: The aim of this paper is to determine the error of the diffusion coefficient of removed moisture applying convection drying of carrot slices. In this study series for diffusion coefficient calculation are applied and the diffusion coefficient error at the beginning of the experiment is investigated. The experiments were carried out with carrot slices of 15 mm thickness on laboratory conditions. There are compared drying processes by different drying temperatures with the purpose to investigate the temperature effect on the diffusion coefficient changes. Using the experimental data the theoretical diffusion coefficient was calculated using iterative methods with small drying time. The research shows that one should be careful when using the first term of solution of the Fick’s second law of diffusion, although in practice only the first term of the series is often applied. The results of this research showed that the error of the diffusion coefficient occured due to several members of series at small times. The theoretical results are useful for description and modelling of the drying process with the time dependent diffusion coefficient for carrot slices and pieces on two- and threedimensional case. The calculated parameters can be used for further research work and for improvement of the whole drying process
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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