Modelling of drying kinetics during non-isothermal convective drying of passion fruit seeds
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.11301/jsfe.17.117 http://hdl.handle.net/11449/232747 |
Resumo: | A model to identify the effective diffusivity and to predict the dr ying kinetics during non-isothermal convective drying of yellow passion fruit (Passiflora edulis Sims f. flavicarpa Degener) seeds was formulated and validated. The governing equations for coupled mass and heat transfer phenomena were expressed in a generalized coordinate system in order to obtain a one-dimensional model suitable for the non-regular geometry of the seeds. Solid shrinkage, moisture and temperature-dependent transport properties, convection heat and mass transfer at the seed surface and symmetrical distribution of moisture content and temperature inside the material were considered. To identify the moisture effective diffusivity, model estimations were fitted to data from drying experiments carried out at air temperatures of 40, 50, and 60°C and at air velocities of 0.6 and 1.4 m·s-1. The air velocity promoted a lower effect than the air temperature on drying rate, suggesting the internal resistance to mass transfer controlled the water diffusion. The proposed model could contribute to understand the diffusion mechanisms in the material, offering an alternative approach to study the convective drying of non-regular particles due to it requires a simpler solving process and a shorter calculation time than some multidimensional approaches. |
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Modelling of drying kinetics during non-isothermal convective drying of passion fruit seedsEffective diffusivityGeneralized coordinatesMass and heat transportShrinkageA model to identify the effective diffusivity and to predict the dr ying kinetics during non-isothermal convective drying of yellow passion fruit (Passiflora edulis Sims f. flavicarpa Degener) seeds was formulated and validated. The governing equations for coupled mass and heat transfer phenomena were expressed in a generalized coordinate system in order to obtain a one-dimensional model suitable for the non-regular geometry of the seeds. Solid shrinkage, moisture and temperature-dependent transport properties, convection heat and mass transfer at the seed surface and symmetrical distribution of moisture content and temperature inside the material were considered. To identify the moisture effective diffusivity, model estimations were fitted to data from drying experiments carried out at air temperatures of 40, 50, and 60°C and at air velocities of 0.6 and 1.4 m·s-1. The air velocity promoted a lower effect than the air temperature on drying rate, suggesting the internal resistance to mass transfer controlled the water diffusion. The proposed model could contribute to understand the diffusion mechanisms in the material, offering an alternative approach to study the convective drying of non-regular particles due to it requires a simpler solving process and a shorter calculation time than some multidimensional approaches.Facultad de Ingeniería Agronómica Universidad del Tolima Barrio Santa Helena, A.A. 546Departamento de Química Universidad de las Islas Baleares, Ctra.Valldemossa km 7.5Departamento de Engenharia e Tecnologia de Alimentos Universidade Estadual Paulista, A.A 136Departamento de Engenharia e Tecnologia de Alimentos Universidade Estadual Paulista, A.A 136Barrio Santa HelenaUniversidad de las Islas BalearesUniversidade Estadual Paulista (UNESP)Váquiro, HenryRodríguez, ÓscarSimal, SusanaSolanilla-Duque, José F.Telis-Romero, Javier [UNESP]2022-04-30T09:10:18Z2022-04-30T09:10:18Z2016-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article117-121http://dx.doi.org/10.11301/jsfe.17.117Japan Journal of Food Engineering, v. 17, n. 4, p. 117-121, 2016.1345-7942http://hdl.handle.net/11449/23274710.11301/jsfe.17.1172-s2.0-85048015854Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJapan Journal of Food Engineeringinfo:eu-repo/semantics/openAccess2022-04-30T09:10:18Zoai:repositorio.unesp.br:11449/232747Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-30T09:10:18Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Modelling of drying kinetics during non-isothermal convective drying of passion fruit seeds |
title |
Modelling of drying kinetics during non-isothermal convective drying of passion fruit seeds |
spellingShingle |
Modelling of drying kinetics during non-isothermal convective drying of passion fruit seeds Váquiro, Henry Effective diffusivity Generalized coordinates Mass and heat transport Shrinkage |
title_short |
Modelling of drying kinetics during non-isothermal convective drying of passion fruit seeds |
title_full |
Modelling of drying kinetics during non-isothermal convective drying of passion fruit seeds |
title_fullStr |
Modelling of drying kinetics during non-isothermal convective drying of passion fruit seeds |
title_full_unstemmed |
Modelling of drying kinetics during non-isothermal convective drying of passion fruit seeds |
title_sort |
Modelling of drying kinetics during non-isothermal convective drying of passion fruit seeds |
author |
Váquiro, Henry |
author_facet |
Váquiro, Henry Rodríguez, Óscar Simal, Susana Solanilla-Duque, José F. Telis-Romero, Javier [UNESP] |
author_role |
author |
author2 |
Rodríguez, Óscar Simal, Susana Solanilla-Duque, José F. Telis-Romero, Javier [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Barrio Santa Helena Universidad de las Islas Baleares Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Váquiro, Henry Rodríguez, Óscar Simal, Susana Solanilla-Duque, José F. Telis-Romero, Javier [UNESP] |
dc.subject.por.fl_str_mv |
Effective diffusivity Generalized coordinates Mass and heat transport Shrinkage |
topic |
Effective diffusivity Generalized coordinates Mass and heat transport Shrinkage |
description |
A model to identify the effective diffusivity and to predict the dr ying kinetics during non-isothermal convective drying of yellow passion fruit (Passiflora edulis Sims f. flavicarpa Degener) seeds was formulated and validated. The governing equations for coupled mass and heat transfer phenomena were expressed in a generalized coordinate system in order to obtain a one-dimensional model suitable for the non-regular geometry of the seeds. Solid shrinkage, moisture and temperature-dependent transport properties, convection heat and mass transfer at the seed surface and symmetrical distribution of moisture content and temperature inside the material were considered. To identify the moisture effective diffusivity, model estimations were fitted to data from drying experiments carried out at air temperatures of 40, 50, and 60°C and at air velocities of 0.6 and 1.4 m·s-1. The air velocity promoted a lower effect than the air temperature on drying rate, suggesting the internal resistance to mass transfer controlled the water diffusion. The proposed model could contribute to understand the diffusion mechanisms in the material, offering an alternative approach to study the convective drying of non-regular particles due to it requires a simpler solving process and a shorter calculation time than some multidimensional approaches. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-01-01 2022-04-30T09:10:18Z 2022-04-30T09:10:18Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.11301/jsfe.17.117 Japan Journal of Food Engineering, v. 17, n. 4, p. 117-121, 2016. 1345-7942 http://hdl.handle.net/11449/232747 10.11301/jsfe.17.117 2-s2.0-85048015854 |
url |
http://dx.doi.org/10.11301/jsfe.17.117 http://hdl.handle.net/11449/232747 |
identifier_str_mv |
Japan Journal of Food Engineering, v. 17, n. 4, p. 117-121, 2016. 1345-7942 10.11301/jsfe.17.117 2-s2.0-85048015854 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Japan Journal of Food Engineering |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
117-121 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799964554509156352 |