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Title: Numerical investigation of a porous matrix combustor-heater

Abstract

Increasing demands for low pollutant emissions and high-energy utilization efficiency of fossil fuels have given impetus to the search for new types of combustors. This article is concerned with the transient behavior and thermal performance of a porous matrix combustor-heater in which combustion and heat transfer among the different phases (i.e., the solid matrix, the gas flowing in the packed bed, and the coolant flowing through the tubes) are considered. The governing equations for describing combustion and heat transfer processes are nonlinear and coupled. Under the assumption that axial flow of the gas is predominant, these equations are numerically solved for a typical cell in order to obtain the transient three-dimensional distributions of temperatures and of the fuel mass fraction. The numerical algorithm developed provides the tools for analyzing the effects of operating and geometrical parameters on the performance of a porous matrix combustor-heater and for optimizing design and operation of the unit. Numerical results for some examples are given.

Authors:
;
Publication Date:
Research Org.:
Nanjing Univ. of Science and Technology (CN)
OSTI Identifier:
20000640
Alternate Identifier(s):
OSTI ID: 20000640
Resource Type:
Journal Article
Journal Name:
Numerical Heat Transfer. Part A, Applications
Additional Journal Information:
Journal Volume: 36; Journal Issue: 4; Other Information: PBD: Sep 1999; Journal ID: ISSN 1040-7782
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; AIR POLLUTION ABATEMENT; NUMERICAL ANALYSIS; COMBUSTORS; HEATERS; POROUS MATERIALS; PACKED BEDS; COMBUSTION KINETICS; HEAT TRANSFER; PERFORMANCE; COMPUTER-AIDED DESIGN

Citation Formats

Xuan, Y., and Viskanta, R. Numerical investigation of a porous matrix combustor-heater. United States: N. p., 1999. Web.
Xuan, Y., & Viskanta, R. Numerical investigation of a porous matrix combustor-heater. United States.
Xuan, Y., and Viskanta, R. Wed . "Numerical investigation of a porous matrix combustor-heater". United States.
@article{osti_20000640,
title = {Numerical investigation of a porous matrix combustor-heater},
author = {Xuan, Y. and Viskanta, R.},
abstractNote = {Increasing demands for low pollutant emissions and high-energy utilization efficiency of fossil fuels have given impetus to the search for new types of combustors. This article is concerned with the transient behavior and thermal performance of a porous matrix combustor-heater in which combustion and heat transfer among the different phases (i.e., the solid matrix, the gas flowing in the packed bed, and the coolant flowing through the tubes) are considered. The governing equations for describing combustion and heat transfer processes are nonlinear and coupled. Under the assumption that axial flow of the gas is predominant, these equations are numerically solved for a typical cell in order to obtain the transient three-dimensional distributions of temperatures and of the fuel mass fraction. The numerical algorithm developed provides the tools for analyzing the effects of operating and geometrical parameters on the performance of a porous matrix combustor-heater and for optimizing design and operation of the unit. Numerical results for some examples are given.},
doi = {},
journal = {Numerical Heat Transfer. Part A, Applications},
issn = {1040-7782},
number = 4,
volume = 36,
place = {United States},
year = {1999},
month = {9}
}