Modeling of porous radiant burners with large extinction coefficients

F. Escobedo; H. J. Viljoen

doi:10.1002/cjce.5450720506

Modeling of porous radiant burners with large extinction coefficients

F. Escobedo, H. J. Viljoen

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

A comparative study of numerical and analytical results for a porous radiant burner (PRB) is presented. It is shown that the analytical method captures all the features of the system and can be used for quantitative applications. Two solutions are found, one is located close to the inlet of the burner and the second one is close to the outlet. The effects of the molar flow rate, the interphase heat transfer coefficient (h_s) and the location of the flame in the matrix, on the radiation efficiency (RE) of the burner are studied. Local maxima in the RE vs. h_s curves indicate that intermediate values of h_s will be the optimum choice. Other trends are also analyzed and some recommendations are made.

Original language	English (US)
Pages (from-to)	805-814
Number of pages	10
Journal	The Canadian Journal of Chemical Engineering
Volume	72
Issue number	5
DOIs	https://doi.org/10.1002/cjce.5450720506
State	Published - Oct 1994

Keywords

multiple solutions
parameter study
porous radiant burners

ASJC Scopus subject areas

General Chemical Engineering

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10.1002/cjce.5450720506

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abstract = "A comparative study of numerical and analytical results for a porous radiant burner (PRB) is presented. It is shown that the analytical method captures all the features of the system and can be used for quantitative applications. Two solutions are found, one is located close to the inlet of the burner and the second one is close to the outlet. The effects of the molar flow rate, the interphase heat transfer coefficient (hs) and the location of the flame in the matrix, on the radiation efficiency (RE) of the burner are studied. Local maxima in the RE vs. hs curves indicate that intermediate values of hs will be the optimum choice. Other trends are also analyzed and some recommendations are made.",

keywords = "multiple solutions, parameter study, porous radiant burners",

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AU - Viljoen, H. J.

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N2 - A comparative study of numerical and analytical results for a porous radiant burner (PRB) is presented. It is shown that the analytical method captures all the features of the system and can be used for quantitative applications. Two solutions are found, one is located close to the inlet of the burner and the second one is close to the outlet. The effects of the molar flow rate, the interphase heat transfer coefficient (hs) and the location of the flame in the matrix, on the radiation efficiency (RE) of the burner are studied. Local maxima in the RE vs. hs curves indicate that intermediate values of hs will be the optimum choice. Other trends are also analyzed and some recommendations are made.

AB - A comparative study of numerical and analytical results for a porous radiant burner (PRB) is presented. It is shown that the analytical method captures all the features of the system and can be used for quantitative applications. Two solutions are found, one is located close to the inlet of the burner and the second one is close to the outlet. The effects of the molar flow rate, the interphase heat transfer coefficient (hs) and the location of the flame in the matrix, on the radiation efficiency (RE) of the burner are studied. Local maxima in the RE vs. hs curves indicate that intermediate values of hs will be the optimum choice. Other trends are also analyzed and some recommendations are made.

KW - multiple solutions

KW - parameter study

KW - porous radiant burners

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Modeling of porous radiant burners with large extinction coefficients

Abstract

Keywords

ASJC Scopus subject areas

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