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TECHNICAL PAPERS: Porous Media

Directional Spectral Emittance of a Packed Bed: Influence of the Temperature Gradient in the Medium

[+] Author and Article Information
Dominique Baillis, Jean-François Sacadura

Center de Thermique de Lyon (CETHIL), UMR CNRS 5008, Institut National des Sciences Appliquées de Lyon, 20, avenue Albert Einstein 69621, Villeurbanne Cedex, France

J. Heat Transfer 124(5), 904-911 (Sep 11, 2002) (8 pages) doi:10.1115/1.1466459 History: Received December 15, 2000; Revised October 12, 2001; Online September 11, 2002
Copyright © 2002 by ASME
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References

Viskanta,  R., and Mengüç,  M. P., 1989, “Radiative Transfer in Dispersed Media,” ASME Appl. Mech. Rev., 42(9), pp. 241–259.
Baillis,  D., and Sacadura,  J. F., 2000, “Thermal Radiation Properties of Dispersed Media: Theoretical Prediction and Experimental Characterization,” J. Quant. Spectrosc. Radiat. Transf., 67, pp. 327–363.
Kaviany, M., 1995, Principles of Heat Transfert in Porous Media, 2nd ed., Springer-Verlag.
Kamiuto,  K., 1990, “Correlated Radiative Transfer in Packed-Sphere Systems,” J. Quant. Spectrosc. Radiat. Transf., 43(1), pp. 39–43.
Singh,  B. P., and Kaviany,  M., 1992, “Modeling Radiative Heat Transfer in Packed Beds,” Int. J. Heat Mass Transf. 35(6), pp. 1397–1405.
Jones,  P. D., McLeod,  D. G., and Dorai-Raj,  D. E., 1996, “Correlation of Measured and Computed Radiation Intensity Exiting a Packed Bed,” J. Heat Transfer, 118, pp. 94–102.
Lopes,  R., Moura,  L. M., Baillis,  D., and Sacadura,  J. F., 2001, “Directional Spectral Emittance of a Packed Bed: Correlation Between Theoretical Prediction and Experimental Data,” J. Heat Transfer, 123(2), pp. 205–416.
Lopes, R., Moura, L. M., Delmas, A., and Sacadura, J.-F., 1998, “Directional Spectral Emittance of Ceramic Material: Theoretical Prediction Compared to Experimental Data,” 7th AIAA/ASME Joint Thermophysics and Heat Transfer Conference, Albuquerque, New Mexico.
Doermann, D., 1995, “Modélisation des transferts thermiques dans des matériaux semi-transparents de type mousse à pores ouverts et prédiction des propriétés radiatives,” Ph.D. thesis, n° 95 ISAL. 0010, INSA de Lyon, France.
Nicolau, V. P., 1994, “Identification des propriétés radiatives des matériaux semi-transparents diffusants,” Ph.D. thesis, n° 94 ISAL. 0001, INSA de Lyon, France.
Brewster, M. Q., 1992, Thermal Radiative Transfer and Properties, John Wiley and Sons, New York, Inc., pp. 301–336.

Figures

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Emittance measurement system (Lopes et al. 11)
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Particle hemispherical reflectivity for Samples A and B (Lopes et al. 7)
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(a) Sample A-temperature profile for cases 3 and 5; and (b) Sample B-temperature profile for cases 3 and 5.
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(a) Sample A-relative deviation between the emittance of case 3 and one of cases i=2,4,5 for λ=3 μm; and (b) Sample B-relative deviation between the emittance of case 3 and one of cases i=2,4,5 for λ=3 μm.
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(a) Sample A emittance polar distribution for λ=3 μm; and (b) Sample B emittance polar distribution for λ=3 μm.
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Sample A-relative deviation between the normalized temperature profiles T of case 3 and cases i=6 to 12: (a) Δxi/xi=+5 percent; and (b) Δxi/xi=−5 percent.
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Sample B-relative deviation between the normalized temperature profiles T of case 3 and cases i=6 to 12: (a) Δxi/xi=+5 percent; and (b) Δxi/xi=−5 percent.
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Sample A-relative deviation between the emittance of case 3 and one of cases i=6 to 12 for λ=3 μm: (a) Δxi/xi=+5 percent; and (b) Δxi/xi=−5 percent.
Grahic Jump Location
Sample B-relative deviation between the emittance of case 3 and one of cases i=6 to 12 for λ=3 μm: (a) Δxi/xi=+5 percent; and (b) Δxi/xi=−5 percent.

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