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Universidade do Minho >
Escola de Engenharia da Universidade do Minho | School of Engineering at the University of Minho >
Centro de Engenharia Biológica | Centre of Biological Engineering >
CEB - Artigos em Revistas/Séries Internacionais / Papers in International Journals/Series >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/1822/6305
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| Title: | Permeability and effective thermal conductivity of bisized porous media |
| Authors: | Dias, Ricardo P.
Fernandes, Carla S.
Mota, M.
Teixeira, J. A.
Yelshin, Alexander |
| Keywords: | Fixed bed
Binary particulate mixtures
Permeability
Effective thermal conductivity |
| Issue date: | Apr-2007 |
| Publisher: | Elsevier Ltd. |
| Citation: | Dias, Ricardo P. [et. al.] - Permeability and effective thermal conductivity of bisized porous media. “International Journal of Heat and Mass Transfer” [Em linha]. 50:7-8 (Abr. 2007). [Consult. 17 Abr. 2007]. Disponível na Internet:
<URL:http://www.sciencedirect.com/science?
_ob=ArticleURL&_udi=B6V3H-4MW90CS-
2&_user=2459786&_coverDate=04%2F30%
2F2007&_rdoc=11&_fmt=full&_orig=browse&_srch=
doc-info(%23toc%235731%232007%
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23Volume)&_cdi=5731&_sort=d&_docanchor=&view=c&_ct=3
8&_acct=C000057396&_version=1&_urlVersion=0&
_userid=2459786&md5=69e181768f2e7faa910ead
ba54e6f44e. ISSN 0017-9310. |
| Abstract: | 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. |
| Type: | article |
| URI: | http://hdl.handle.net/1822/6305 |
| ISSN: | 0017-9310 |
| Publisher version: | http://www.sciencedirect.com/ |
| Peer-Reviewed: | yes |
| Appears in Collections: | CEB - Artigos em Revistas/Séries Internacionais / Papers in International Journals/Series
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