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Title: 2D heat and mass transfer modeling of methane steam reforming for hydrogen production in a compact reformer
Authors: Ni, M 
Keywords: Compact reformer
Fuel processing
Porous media
Heat and mass transfer
Hydrogen production
Issue Date: Jan-2013
Publisher: Pergamon Press
Source: Energy conversion and management, Jan. 2013, v. 65, p. 155-163 How to cite?
Journal: Energy conversion and management 
Abstract: Compact reformers (CRs) are promising devices for efficient fuel processing. In CRs, a thin solid plate is sandwiched between two catalyst layers to enable efficient heat transfer from combustion duct to the reforming duct for fuel processing. In this study, a 2D heat and mass transfer model is developed to investigate the fundamental transport phenomenon and chemical reaction kinetics in a CR for hydrogen production by methane steam reforming (MSR). Both MSR reaction and water gas shift reaction (WGSR) are considered in the numerical model. Parametric simulations are performed to examine the effects of various structural/operating parameters, such as pore size, permeability, gas velocity, temperature, and rate of heat supply on the reformer performance. It is found that the reaction rates of MSR and WGSR are the highest at the inlet but decrease significantly along the reformer. Increasing the operating temperature raises the reaction rates at the inlet but shows very small influence in the downstream. For comparison, increasing the rate of heat supply raises the reaction rates in the downstream due to increased temperature. A high gas velocity and permeability facilitates gas transport in the porous structure thus enhances reaction rates in the downstream of the reformer.
ISSN: 0196-8904
EISSN: 1879-2227
DOI: 10.1016/j.enconman.2012.07.017
Rights: © 2012 Elsevier Ltd. All rights reserved.
NOTICE: this is the author’s version of a work that was accepted for publication in Energy Conversion and Management. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Energy Conversion and Management, vol. 65, (Jan 2013), DOI: 10.1016/j.enconman.2012.07.017
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