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Review Articles

Thermal Dispersion in Porous Media—A Review on the Experimental Studies for Packed Beds

[+] Author and Article Information
Türküler Özgümüş

e-mail: turkulerozgumus@iyte.edu.tr

Moghtada Mobedi

e-mail: moghtadamobedi@iyte.edu.tr

Ünver Özkol

e-mail: unverozkol@iyte.edu.tr
Mechanical Engineering Department,
Izmir Institute of Technology,
Urla, 35430 İzmir, Turkey

Akira Nakayama

Department of Mechanical Engineering, Shizuoka University,
3-5-1 Johoku, 432 Hamamatsu,Japan
e-mail: tmanaka@ipc.shizuoka.ac.jp

Manuscript received July 12, 2012; final manuscript received April 17, 2013; published online July 15, 2013. Editor: Harry Dankowicz.

Appl. Mech. Rev 65(3), 031001 (Jul 15, 2013) (19 pages) Paper No: AMR-12-1036; doi: 10.1115/1.4024351 History: Received July 12, 2012; Revised April 17, 2013

Thermal dispersion is an important topic in the convective heat transfer in porous media. In order to determine the heat transfer in a packed bed, the effective thermal conductivity including both stagnant and dispersion thermal conductivities should be known. Several theoretical and experimental studies have been performed on the determination of the effective thermal conductivity. The aim of this study is to review the experimental studies done on the determination of the effective thermal conductivity of the packed beds. In this study, firstly brief information on the definition of the thermal dispersion is presented and then the reported experimental studies on the determination of the effective thermal conductivity are summarized and compared. The reported experimental methods are classified into three groups: (1) heat addition/removal at the lateral boundaries, (2) heat addition at the inlet/outlet boundary, (3) heat addition inside the bed. For each performed study, the experimental details, methods, obtained results, and suggested correlations for the determination of the effective thermal conductivity are presented. The similarities and differences between experimental methods and reported studies are shown by tables. Comparison of the correlations for the effective thermal conductivity is made by using figures and the results of the studies are discussed.

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References

Figures

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Fig. 1

Microscopic view of the porous structure [1]

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Fig. 2

The experimental methods for the determination of the thermal dispersion

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Fig. 3

The schematic view of the experimental setup for the use of the heat addition/removal at the lateral boundaries method

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Fig. 4

Experimental setup of Bey and Eigenberger [36], this figure was published in Ref. [36]. Copyright 2001 Elsevier Masson sas. All rights reserved.

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Fig. 5

The schematics of the experimental setup for the heating at the inlet boundary

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Fig. 8

The Reynolds number ranges in the reported experimental studies

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Fig. 9

The comparison of reported correlations for determination of radial effective thermal conductivity ratio (a) spherical particle bed, (b) cylindrical particle bed, (c) Raschig ring particle bed

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Fig. 7

Experimental setup of Metzger et al. [51] (a) Point heat source, (b) plane heat source, reprinted from Ref. [51], Copyright 2004, with permission from Elsevier

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