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Analysis of chemically reacting transport phenomena in an anode duct of intermediate temperature SOFCs

Yuan, Jinliang LU and Sundén, Bengt LU (2006) In Journal of Fuel Cell Science and Technology 3(2). p.89-98
Abstract
The internal reforming and electrochemical reactions appear in the porous anode layer, and may lead to inhomogeneous temperature and gas species distributions according to the reaction kinetics. In this study, a fully three-dimensional calculation method has been further developed to simulate and analyze chemically reacting transport processes in a thick anode duct. The composite duct investigated consists of a porous anode, the fuel flow duct and solid current, connector. Momentum and heat transport together with gas species equations have been solved by coupled source terms and variable thermophysical/transport properties of the fuel gas mixture. Furthermore, the heat transfer due to the fuel gas diffusion is implemented into the energy... (More)
The internal reforming and electrochemical reactions appear in the porous anode layer, and may lead to inhomogeneous temperature and gas species distributions according to the reaction kinetics. In this study, a fully three-dimensional calculation method has been further developed to simulate and analyze chemically reacting transport processes in a thick anode duct. The composite duct investigated consists of a porous anode, the fuel flow duct and solid current, connector. Momentum and heat transport together with gas species equations have been solved by coupled source terms and variable thermophysical/transport properties of the fuel gas mixture. Furthermore, the heat transfer due to the fuel gas diffusion is implemented into the energy balance based on multicomponent diffusion models. The,fuel cell conditions such as the combined thermal boundary conditions on solid walls, mass balances (generation and consumption) associated with the various reactions, and gas permeation between the porous anode and flow duct are applied in the analysis. Simulation results show that the internal reforming and the electrochemical reactions, and cell operating conditions are significant for species distribution, fuel gas transport and heat transfer in the subdomains of the anode. (Less)
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author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
intermediate temperature, porous anode, transport phenomena, analysis, chemical reacting, solid oxide fuel cell (SOFC)
in
Journal of Fuel Cell Science and Technology
volume
3
issue
2
pages
89 - 98
publisher
American Society Of Mechanical Engineers (ASME)
external identifiers
  • wos:000238091000001
  • scopus:33744987131
ISSN
1551-6989
DOI
10.1115/1.2173662
language
English
LU publication?
yes
id
ce996a1d-d584-4da2-b803-ed79e332e1e8 (old id 406813)
date added to LUP
2016-04-01 12:29:28
date last changed
2021-09-22 03:54:20
@article{ce996a1d-d584-4da2-b803-ed79e332e1e8,
  abstract     = {The internal reforming and electrochemical reactions appear in the porous anode layer, and may lead to inhomogeneous temperature and gas species distributions according to the reaction kinetics. In this study, a fully three-dimensional calculation method has been further developed to simulate and analyze chemically reacting transport processes in a thick anode duct. The composite duct investigated consists of a porous anode, the fuel flow duct and solid current, connector. Momentum and heat transport together with gas species equations have been solved by coupled source terms and variable thermophysical/transport properties of the fuel gas mixture. Furthermore, the heat transfer due to the fuel gas diffusion is implemented into the energy balance based on multicomponent diffusion models. The,fuel cell conditions such as the combined thermal boundary conditions on solid walls, mass balances (generation and consumption) associated with the various reactions, and gas permeation between the porous anode and flow duct are applied in the analysis. Simulation results show that the internal reforming and the electrochemical reactions, and cell operating conditions are significant for species distribution, fuel gas transport and heat transfer in the subdomains of the anode.},
  author       = {Yuan, Jinliang and Sundén, Bengt},
  issn         = {1551-6989},
  language     = {eng},
  number       = {2},
  pages        = {89--98},
  publisher    = {American Society Of Mechanical Engineers (ASME)},
  series       = {Journal of Fuel Cell Science and Technology},
  title        = {Analysis of chemically reacting transport phenomena in an anode duct of intermediate temperature SOFCs},
  url          = {http://dx.doi.org/10.1115/1.2173662},
  doi          = {10.1115/1.2173662},
  volume       = {3},
  year         = {2006},
}