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MODELING OF RADIATIVE HEAT TRANSFER IN THE UPPER DILUTE ZONE OF CIRCULATING FLUIDIZED BEDS

Gilles Flamant, Hongshun Li, Jidong Lu

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Abstract

A 3-D model predicts the radiative heat transfer in the upper dilute zone of circulating fluidized beds (CFB) of rectangular cross-section. The radiative equation is solved with the Discrete Ordinates Method, using experimentally determined temperature and solids concentration distributions as the model parameters. Some general computing results are presented and the influence of radiation from the bed walls on the radiative transfer coefficient measurements in laboratory-scale CFBs is then estimated from the numerical simulation.

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What this paper is about

A 3-D model predicts the radiative heat transfer in the upper dilute zone of circulating fluidized beds (CFB) of rectangular cross-section. The radiative equation is solved with the Discrete Ordinates Method, using experimentally determined temperature and solids concentration distributions as the model parameters. Some general computing results are presented and the influence of radiation from the bed walls on the radiative transfer coefficient measurements in laboratory-scale CFBs is then estimated from the numerical simulation.

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Available abstract

A 3-D model predicts the radiative heat transfer in the upper dilute zone of circulating fluidized beds (CFB) of rectangular cross-section. The radiative equation is solved with the Discrete Ordinates Method, using experimentally determined temperature and solids concentration distributions as the model parameters. Some general computing results are presented and the influence of radiation from the bed walls on the radiative transfer coefficient measurements in laboratory-scale CFBs is then estimated from the numerical simulation.

Key concepts: Radiative transfer, Thermal radiation, Heat transfer, Fluidized bed combustion, Mechanics, Radiation, Thermodynamics, Heat transfer coefficient

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MODELING OF RADIATIVE HEAT TRANSFER IN THE UPPER DILUTE ZONE OF CIRCULATING FLUIDIZED BEDS — Research Paper | ScholarLens