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Study of the drying kinetics and calculation of mass transfer properties in hot air drying of Cynara cardunculus

2020Journal article Open access
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dc.contributor.authorGuiné, Raquel
dc.contributor.authorLima, M. J. Reis
dc.date.accessioned2020-11-16T11:16:32Z
dc.date.available2020-11-16T11:16:32Z
dc.date.issued2020
dc.description.abstractIn the present work, mass transfer properties of thistle flower (Cynara cardunculus L.) were evaluated for the convective drying carried out at temperatures between 35 and 65°C, with an air flow of 0.5 m/s. The calculations followed two different algorithms, based on mathematical models derived from the thin layer drying equation and Fick’s second law of diffusion. The results obtained indicated that different methodologies resulted in different values of mass transfer properties, which is an alert that care must be taken when choosing which calculation method might be more appropriate in a specific practical application. In all cases, the values of moisture diffusion and mass transfer coefficient were found to increase with increasing operating temperature. The values of diffusivity increased from 2.7866 × 10−9 to 1.4027 × 10−8 m2/s for the thin layer model-based algorithm and from 1.9256 × 10−10 to 1.2033 × 10−9 m2/s for Fick’s equation model. The values of the mass transfer coefficient increased from 8.4335 × 10−8 to 8.4400 × 10−7 m/s and from 5.8277 × 10−9 to 7.2398 × 10−8 m/s, respectively, for the thin layer and Fick’s law-based models.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGuiné RPF, Lima MJ (2020) Study of the drying kinetics and calculation of mass transfer properties in hot air drying of Cynara cardunculus. Open Agriculture, 5(1), 740-750pt_PT
dc.identifier.doihttps://doi.org/10.1515/opag-2020-0062pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.19/6405
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relation.publisherversionhttps://www.degruyter.com/view/journals/opag/5/1/article-p740.xmlpt_PT
dc.subjectactivation energypt_PT
dc.subjectmass transfer coefficientpt_PT
dc.subjectdiffusivitypt_PT
dc.subjectconvective dryingpt_PT
dc.titleStudy of the drying kinetics and calculation of mass transfer properties in hot air drying of Cynara cardunculuspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage750pt_PT
oaire.citation.issue1pt_PT
oaire.citation.startPage740pt_PT
oaire.citation.titleOpen Agriculturept_PT
oaire.citation.volume5pt_PT
person.familyNamede Pinho Ferreira Guiné
person.familyNameCunha Silva Reis Lima
person.givenNameRaquel
person.givenNameMaria Joao
person.identifierhttps://scholar.google.pt/citations?user=abFDovIAAAAJ&hl=pt-PT
person.identifier.ciencia-id8B13-5492-0F23
person.identifier.ciencia-id1015-9028-5D39
person.identifier.orcid0000-0003-0595-6805
person.identifier.orcid0000-0003-0597-7892
person.identifier.scopus-author-id6603138390
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication59580952-77cc-4e4e-ae90-527a8b994f9f
relation.isAuthorOfPublicationf2ee0dd6-c5c9-4743-8f1f-d0537328fe9b
relation.isAuthorOfPublication.latestForDiscoveryf2ee0dd6-c5c9-4743-8f1f-d0537328fe9b

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