Bed Voidage and Heat Transfer in Non-Newtonian Liquid-Solid Fluidized Bed

Bed Voidage and Heat Transfer in Non-Newtonian Liquid-Solid Fluidized Bed

The presence of particles in liquid-solid fluidized beds enhances the bed heat transfer, because the movement of the particles leads to an increased turbulence in the system. Moreover, the violent movement of the particles has a positive effect on fouling of the heat transfer surface. The aim of thi...

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Main Authors: Mohammad Reza Ehsani, Hasan Behbahani, Mohammad Jamialahmadi
Format: Article
Language:English
Published: Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR 2004-12-01
Series:Iranian Journal of Chemistry & Chemical Engineering
Subjects:
bed voidage
heat transfer
non-newtonian
fluidized bed
Online Access:http://www.ijcce.ac.ir/article_8141_b89c34e1f735eb57a99f68c24d9aba4e.pdf
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spelling doaj-0b5d21487f1d4d27aec78a5257bc66932020-11-25T01:38:56ZengIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry & Chemical Engineering 1021-99861021-99862004-12-0123273798141Bed Voidage and Heat Transfer in Non-Newtonian Liquid-Solid Fluidized BedMohammad Reza Ehsani0Hasan Behbahani1Mohammad Jamialahmadi2Department of Chemical Engineering, Isfahan University of Technology, Isfahan, I.R. IRANDepartment of Chemical Engineering, Isfahan University of Technology, Isfahan, I.R. IRANThe university of Petrileum Industry, Ahwas, I.R. IRANThe presence of particles in liquid-solid fluidized beds enhances the bed heat transfer, because the movement of the particles leads to an increased turbulence in the system. Moreover, the violent movement of the particles has a positive effect on fouling of the heat transfer surface. The aim of this investigation was to perform systematic measurements of bed voidage and heat transfer coefficient for solid-liquid fluidization in a cylindrical tube and to study the effect of process parameters such as particle size and density, flow velocity, and liquid viscosity on these subjects. A large number of experiments were performed using different cylindrical and spherical particles fluidized in aqueous CMC solution with different concentrations. Using the experimental results, a new correlation for predicting heat transfer coefficient in non-Newtonian liquid-solid fluidized bed heat exchanger was introduced.http://www.ijcce.ac.ir/article_8141_b89c34e1f735eb57a99f68c24d9aba4e.pdfbed voidageheat transfernon-newtonianfluidized bed
collection DOAJ
language English
format Article
sources DOAJ
author Mohammad Reza Ehsani
Hasan Behbahani
Mohammad Jamialahmadi
spellingShingle Mohammad Reza Ehsani
Hasan Behbahani
Mohammad Jamialahmadi
Bed Voidage and Heat Transfer in Non-Newtonian Liquid-Solid Fluidized Bed
Iranian Journal of Chemistry & Chemical Engineering
bed voidage
heat transfer
non-newtonian
fluidized bed
author_facet Mohammad Reza Ehsani
Hasan Behbahani
Mohammad Jamialahmadi
author_sort Mohammad Reza Ehsani
title Bed Voidage and Heat Transfer in Non-Newtonian Liquid-Solid Fluidized Bed
title_short Bed Voidage and Heat Transfer in Non-Newtonian Liquid-Solid Fluidized Bed
title_full Bed Voidage and Heat Transfer in Non-Newtonian Liquid-Solid Fluidized Bed
title_fullStr Bed Voidage and Heat Transfer in Non-Newtonian Liquid-Solid Fluidized Bed
title_full_unstemmed Bed Voidage and Heat Transfer in Non-Newtonian Liquid-Solid Fluidized Bed
title_sort bed voidage and heat transfer in non-newtonian liquid-solid fluidized bed
publisher Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
series Iranian Journal of Chemistry & Chemical Engineering
issn 1021-9986
1021-9986
publishDate 2004-12-01
description The presence of particles in liquid-solid fluidized beds enhances the bed heat transfer, because the movement of the particles leads to an increased turbulence in the system. Moreover, the violent movement of the particles has a positive effect on fouling of the heat transfer surface. The aim of this investigation was to perform systematic measurements of bed voidage and heat transfer coefficient for solid-liquid fluidization in a cylindrical tube and to study the effect of process parameters such as particle size and density, flow velocity, and liquid viscosity on these subjects. A large number of experiments were performed using different cylindrical and spherical particles fluidized in aqueous CMC solution with different concentrations. Using the experimental results, a new correlation for predicting heat transfer coefficient in non-Newtonian liquid-solid fluidized bed heat exchanger was introduced.
topic bed voidage
heat transfer
non-newtonian
fluidized bed
url http://www.ijcce.ac.ir/article_8141_b89c34e1f735eb57a99f68c24d9aba4e.pdf
work_keys_str_mv AT mohammadrezaehsani bedvoidageandheattransferinnonnewtonianliquidsolidfluidizedbed
AT hasanbehbahani bedvoidageandheattransferinnonnewtonianliquidsolidfluidizedbed
AT mohammadjamialahmadi bedvoidageandheattransferinnonnewtonianliquidsolidfluidizedbed
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