Journal ArticleDOI
Transient radiation heat transfer within a nongray nonisothermal absorbing-emitting-scattering suspension of reacting particles undergoing shrinkage
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TLDR
In this article, a nonisothermal, nongray, absorbing, emitting, and anisotropically scattering suspension of reacting particles exposed to concentrated thermal radiation is considered, and the steam gasification of coal is selected as the model thermochemical reaction.Abstract:
A nonisothermal, nongray, absorbing, emitting, and anisotropically scattering suspension of reacting particles exposed to concentrated thermal radiation is considered. The steam gasification of coal is selected as the model thermochemical reaction. The unsteady energy equation that couples the radiative heat flux with the chemical kinetics is solved by means of a numerical model that incorporates Monte Carlo ray tracing, the finite-volume method, and an explicit Euler time integration scheme. Two modeling approaches are applied: (1) a quasi-continuous model that assumes a homogeneous medium and utilizes its macroscopic radiative properties (absorption and scattering efficiencies and scattering phase function), and (2) a particle-discrete model that assumes an ensemble of randomly positioned particles and traces the interaction of radiation with each particle by geometric optics. Temperature profiles and reaction extent are computed using both approaches. The quasi-continuous approach is superior ...read more
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Journal ArticleDOI
Solar-driven gasification of carbonaceous feedstock-a review
TL;DR: In this paper, a review of the underlying science, thermodynamics and kinetics of the pertinent reactions, and describes the latest advances in solar thermochemical reactor technology is presented, as well as the application of solar-driven gasification.
Journal ArticleDOI
Heat transfer—A review of 2005 literature
Richard J Goldstein,W. E. Ibele,Suhas V. Patankar,Terrence W. Simon,Thomas H. Kuehn,Paul J Strykowski,Kumar K. Tamma,Joachim Heberlein,Jane H. Davidson,John C. Bischof,Francis A Kulacki,Uwe Kortshagen,Sean C. Garrick,Vinod Srinivasan,Kalyanjit Ghosh,Rajat Mittal +15 more
TL;DR: A review of the heat transfer literature published in 2005 can be found in this article, where the authors restrict themselves to papers published in English through a peer-review process, with selected translations from journals published in other languages.
Journal ArticleDOI
Numerical and experimental study of gas–particle radiative heat exchange in a fluidized-bed reactor for steam-gasification of coal
TL;DR: In this paper, a heat transfer numerical model is developed for steam-gasification of coal in a fluidized bed contained in a quartz tubular reactor that is directly exposed to concentrated thermal radiation.
Journal ArticleDOI
Review of Heat Transfer Research for Solar Thermochemical Applications
Wojciech Lipiński,Jane H. Davidson,Sophia Haussener,James F. Klausner,A. Mehdizadeh,Joerg Petrasch,Aldo Steinfeld,Luke J. Venstrom +7 more
TL;DR: In this paper, 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 are reviewed.
Journal ArticleDOI
Progress in heat transfer research for high-temperature solar thermal applications
Wojciech Lipiński,Ehsan Abbasi-Shavazi,Jingjing Chen,Joe Coventry,Morteza Hangi,S. V. Iyer,Apurv Kumar,Apurv Kumar,Lifeng Li,Sha Li,John Pye,Juan F. Torres,Bo Wang,Ye Wang,Vincent M. Wheeler +14 more
TL;DR: In this article, the progress, challenges and opportunities in heat transfer research as applied to high-temperature solar thermal and thermochemical energy systems are reviewed, including the fundamentals of concentrated solar energy collection, convective heat transfer in solar receivers, application of liquid metals as heat transfer media, and heat transfer for non-reacting and reacting two-phase solid-gas systems such as particle-gas flows and gas-saturated porous structures.
References
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Book
Numerical Recipes in FORTRAN
TL;DR: The Diskette v 2.04, 3.5'' (720k) for IBM PC, PS/2 and compatibles [DOS] Reference Record created on 2004-09-07, modified on 2016-08-08.
Thermal radiation heat transfer
Robert Siegel,John R. Howell +1 more
TL;DR: In this article, a comprehensive discussion of heat transfer by thermal radiation is presented, including the radiative behavior of materials, radiation between surfaces, and gas radiation, and the use of the Monte Carlo technique in solving radiant exchange problems and problems of radiative transfer through absorbing-emitting media.
Book
Thermal Radiation Heat Transfer
Robert Siegel,John R. Howell +1 more
TL;DR: In this paper, a comprehensive discussion of heat transfer by thermal radiation is presented, including the radiative behavior of materials, radiation between surfaces, and gas radiation, and the use of the Monte Carlo technique in solving radiant exchange problems and problems of radiative transfer through absorbing-emitting media.
Book
Radiative heat transfer
TL;DR: In this article, the Monte Carlo method for thermal radiation was used to estimate the radiative properties of one-dimensional Gray Media, and the method of Spherical Harmonics (PN-Approximation) was used for the same purpose.
Journal ArticleDOI
Optical Constants of Soot and Their Application to Heat-Flux Calculations
W. H. Dalzell,A. F. Sarofim +1 more
TL;DR: In this article, the spectral absorption coefficient and the total emissivities of soot suspensions were calculated for the room temperature optiaI.1 and 2.5-1O.