Determination of thermal radiative properties of packed-bed media containing a mixture of polydispersed particles

Jäger, Klaus; Lipiński, Wojciech; Katzgraber, Helmut G.; Steinfeld, Aldo

doi:10.1016/j.ijthermalsci.2008.12.006

Cited by 12 publications

(8 citation statements)

References 23 publications

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“…However, while it is a dramatic geometrical approximation, it has been shown to agree well with experimental data when characterising porous ceria for STRS applications (Dombrovsky et al, 2012;Ganesan et al, 2013a). Simulations of effective radiative transfer (isolated from mass, momentum and other forms of energy transfer) motivated by STRS design have been carried out in conjunction with spectrophotometry set-ups to obtain effective radiative properties for packed beds and porous materials made of ceria (Dombrovsky et al, 2012;Ganesan et al, 2013a,b), zinc oxide (Coray et al, 2009;Schunk et al, 2009b), and a mixture of particles (Jäger et al, 2009).…”

Section: Radiative Properties-experimental and First Principle Studiesmentioning

confidence: 80%

“…It is perhaps the most popular method in the STRS modelling literature, likely due to the simplicity to program, scale, and include complicated spectral and directional properties. Studies employing the MC method include (Ebner and Lipiń ski, 2011;Jäger et al, 2009;Lapp et al, 2013;Lipiń ski et al, 2006;Martinek and Weimer, 2013a;Zedtwitz et al, 2007;Zedtwitz and Steinfeld, 2005;Z'Graggen and Steinfeld, 2009;. The finite volume method has been analysed for its applicability in STRS simulation in (Martinek and Weimer, 2013b).…”

Section: Radiative Energy Transfermentioning

confidence: 99%

“…This approach is found widely in the literature for the dilute fluidised case (Haussener et al, 2009;Martinek et al, 2012a;Martinek and Weimer, 2013a;Z'Graggen and Steinfeld, 2009). Jäger et al uses a slightly modified Lorenz-Mie prediction to better fit experimental results (Jäger et al, 2009). The use of Lorenz-Mie theory to approximate the scattering properties of a porous material has also appeared on a few occasions (Keene et al, 2013(Keene et al, , 2014Yue and Lipiń ski, 2015a).…”

Section: Radiative Energy Transfermentioning

confidence: 99%

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Modelling of solar thermochemical reaction systems

et al. 2017

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a b s t r a c tThis article reviews the progress, challenges and opportunities in numerical modelling of thermal transport, thermochemical reactions and thermomechanics in high-temperature solar thermochemical systems. Continuum-scale models are presented in mathematical detail while highlighting the literature that uses them. The discussion is enhanced by selected examples of numerical studies of solar thermochemical systems for solar fuels and commodity material production. Property predictions necessary for the modelling of solar thermochemical reaction systems are covered.

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Section: Radiative Properties-experimental and First Principle Studiesmentioning

confidence: 80%

Section: Radiative Energy Transfermentioning

confidence: 99%

Section: Radiative Energy Transfermentioning

confidence: 99%

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Modelling of solar thermochemical reaction systems

et al. 2017

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“…The monochromatic transmittance of packed-bed mixtures of SiO 2 , ZnO, and C particles of various relative mass fractions was measured at 632.8 nm as a function of the packed-bed thickness using a He-Ne laser/fiber optics/spectrometer system. The measured transmittance was used to validate a Monte Carlo model for a pseudocontinuum multicomponent medium containing polydispersed Mie-scattering particles [44]. The model was in turn used to determine the radiative properties such as the extinction coefficient, the scattering albedo, and the scattering phase function of the packed-bed mixtures.…”

Section: Radiative Spectroscopy Characterization Of Solar Reacting Mediamentioning

confidence: 99%

Review of Heat Transfer Research for Solar Thermochemical Applications

Lipiński¹,

Davidson

Haussener

et al. 2013

Journal of Thermal Science and Engineering Applications

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This article reviews the progress, challenges and opportunities in heat transfer research as applied to high-temperature thermochemical systems that use high-flux solar irradiation as the source of process heat. Selected pertinent areas such as radiative spectroscopy and tomography-based heat and mass characterization of heterogeneous media, kinetics of high-temperature heterogeneous reactions, heat and mass transfer modeling of solar thermochemical systems, and thermal measurements in high-temperature systems are presented, with brief discussions of their methods and example results from selected applications.

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“…Examples include high-temperature chemical reactions in packed beds [1][2][3], porous radiant burners [4][5][6], combustion furnaces for solid feedstock [7], high-flux solar receivers [8][9][10], and porous heat exchangers [11]. Traditionally, radiative transfer in such media has been modeled using the equation of radiative transfer with appropriate average radiative properties [12,13].…”

Section: Introductionmentioning

confidence: 99%

Discrete vs Continuum Level Simulation of Radiative Transfer in Semitransparent Two-Phase Media

Petrasch

Haussener

Lipínski

2010

Proceeding of the 6th International Symposium on Radiative Transfer

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a b s t r a c tThe mathematical formulation of the continuum approach to radiative transfer modeling in two-phase semi-transparent media is numerically validated by comparing radiative fluxes computed by (i) direct, discrete-scale and (ii) continuum-scale approaches. The analysis is based on geometrical optics. The discrete-scale approach uses the Monte Carlo ray-tracing applied directly to real 3D geometry measured by computed tomography. The continuum-scale approach is based on a set of continuumscale radiative transfer equations and associated radiative properties, and employs the Monte Carlo ray-tracing for computations of radiative fluxes and for computations of the radiative properties. The model two-phase media are reticulate porous ceramics and a particle packed bed, each composed of semitransparent solid and fluid phases. The results obtained by the two approaches are in good agreement within the limits of statistical uncertainty. The continuum-scale approach leads to a reduction in computational time by approximately one order of magnitude, and is therefore suited to treat radiative transfer problems in two-phase media in a wide range of engineering applications.Published by Elsevier Ltd.

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Determination of thermal radiative properties of packed-bed media containing a mixture of polydispersed particles

Cited by 12 publications

References 23 publications

Modelling of solar thermochemical reaction systems

Modelling of solar thermochemical reaction systems

Review of Heat Transfer Research for Solar Thermochemical Applications

Discrete vs Continuum Level Simulation of Radiative Transfer in Semitransparent Two-Phase Media

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