Permeability and effective thermal conductivity of bisized porous media

Detalhes bibliográficos
Autor(a) principal: Dias, Ricardo P.
Data de Publicação: 2007
Outros Autores: Fernandes, Carla S., Mota, Manuel, Teixeira, José, Yelshin, Alexander
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10198/464
Resumo: In the region of minimum porosity of particulate binary mixtures, heat exchange and permeability were found to be higher than the ones obtained with a mono-size packing built with the same small size particles used in the binary packing. This effect was noticed in the range of the particles size ratio 0.1–1.0. The obtained improvement on thermal performance is related to the increase of effective thermal conductivity (ETC) in the binary packing and to the increase in transversal thermal dispersion due to the porosity decrease and tortuosity increase. Permeability can increase by a factor of two, if the size ratio between small and large spheres of a loose packing stays in the range 0.3–0.5.
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spelling Permeability and effective thermal conductivity of bisized porous mediaFixed bedBinary particulate mixturesPermeabilityEffective thermal conductivityIn the region of minimum porosity of particulate binary mixtures, heat exchange and permeability were found to be higher than the ones obtained with a mono-size packing built with the same small size particles used in the binary packing. This effect was noticed in the range of the particles size ratio 0.1–1.0. The obtained improvement on thermal performance is related to the increase of effective thermal conductivity (ETC) in the binary packing and to the increase in transversal thermal dispersion due to the porosity decrease and tortuosity increase. Permeability can increase by a factor of two, if the size ratio between small and large spheres of a loose packing stays in the range 0.3–0.5.The authors thank FCT for the grant accorded to A.Yelshin. They also thank FCT for having provided the funds to perform this work through the project POCI/EQU/58337/2004. This project was partially funded by FEDER.ElsevierBiblioteca Digital do IPBDias, Ricardo P.Fernandes, Carla S.Mota, ManuelTeixeira, JoséYelshin, Alexander2008-02-08T10:39:57Z20072007-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/464engDias, Ricardo P.; Fernandes, Carla S.; Mota, Manuel; Teixeira, José A.; Yelshin, Alexander (2007). Permeability and effective thermal conductivity of bisized porous media. International Journal of Heat and Mass Transfer. ISSN 0017-9310. 50:7-8 1295-13010017-931010.1016/j.ijheatmasstransfer.2006.09.039info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-21T10:03:24Zoai:bibliotecadigital.ipb.pt:10198/464Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:54:16.254644Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Permeability and effective thermal conductivity of bisized porous media
title Permeability and effective thermal conductivity of bisized porous media
spellingShingle Permeability and effective thermal conductivity of bisized porous media
Dias, Ricardo P.
Fixed bed
Binary particulate mixtures
Permeability
Effective thermal conductivity
title_short Permeability and effective thermal conductivity of bisized porous media
title_full Permeability and effective thermal conductivity of bisized porous media
title_fullStr Permeability and effective thermal conductivity of bisized porous media
title_full_unstemmed Permeability and effective thermal conductivity of bisized porous media
title_sort Permeability and effective thermal conductivity of bisized porous media
author Dias, Ricardo P.
author_facet Dias, Ricardo P.
Fernandes, Carla S.
Mota, Manuel
Teixeira, José
Yelshin, Alexander
author_role author
author2 Fernandes, Carla S.
Mota, Manuel
Teixeira, José
Yelshin, Alexander
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Biblioteca Digital do IPB
dc.contributor.author.fl_str_mv Dias, Ricardo P.
Fernandes, Carla S.
Mota, Manuel
Teixeira, José
Yelshin, Alexander
dc.subject.por.fl_str_mv Fixed bed
Binary particulate mixtures
Permeability
Effective thermal conductivity
topic Fixed bed
Binary particulate mixtures
Permeability
Effective thermal conductivity
description In the region of minimum porosity of particulate binary mixtures, heat exchange and permeability were found to be higher than the ones obtained with a mono-size packing built with the same small size particles used in the binary packing. This effect was noticed in the range of the particles size ratio 0.1–1.0. The obtained improvement on thermal performance is related to the increase of effective thermal conductivity (ETC) in the binary packing and to the increase in transversal thermal dispersion due to the porosity decrease and tortuosity increase. Permeability can increase by a factor of two, if the size ratio between small and large spheres of a loose packing stays in the range 0.3–0.5.
publishDate 2007
dc.date.none.fl_str_mv 2007
2007-01-01T00:00:00Z
2008-02-08T10:39:57Z
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://hdl.handle.net/10198/464
url http://hdl.handle.net/10198/464
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Dias, Ricardo P.; Fernandes, Carla S.; Mota, Manuel; Teixeira, José A.; Yelshin, Alexander (2007). Permeability and effective thermal conductivity of bisized porous media. International Journal of Heat and Mass Transfer. ISSN 0017-9310. 50:7-8 1295-1301
0017-9310
10.1016/j.ijheatmasstransfer.2006.09.039
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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