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LTNE approach and simulation for anode-supported SOFCs

Andersson, Martin LU ; Yuan, Jinliang LU ; Sundén, Bengt LU and Wang, Wei Guo (2009) ASME 2009 Seventh International Fuel Cell Science, Engineering and Technology Conference In [Host publication title missing] p.539-549
Abstract
Fuel cells are promising for future energy systems, since they are energy efficient and, when hydrogen is used as fuel, there are no emissions of greenhouse gases. Fuel cells have during recent years various improvements, however the technology is still in the early phases of development, this can be noted by the lack of dominant design both for singe fuel cells, stacks and for entire fuel cell systems. In this study a CFD approach (COMSOL Multiphysics) is employed to investigate the effect on temperature distribution from inlet temperature, oxygen surplus, ionic conductivity and current density for an anode-supported intermediate temperature solid oxide fuel cell (IT-SOFC). The developed model is based on the governing equations of heat-,... (More)
Fuel cells are promising for future energy systems, since they are energy efficient and, when hydrogen is used as fuel, there are no emissions of greenhouse gases. Fuel cells have during recent years various improvements, however the technology is still in the early phases of development, this can be noted by the lack of dominant design both for singe fuel cells, stacks and for entire fuel cell systems. In this study a CFD approach (COMSOL Multiphysics) is employed to investigate the effect on temperature distribution from inlet temperature, oxygen surplus, ionic conductivity and current density for an anode-supported intermediate temperature solid oxide fuel cell (IT-SOFC). The developed model is based on the governing equations of heat-, mass- and momentum transport. A local temperature non equilibrium (LTNE) approach is introduced to calculate the temperature distribution in the gas- and solid phase separately.



The results show that the temperature increasing along the flow direction is controlled by the degree of surplus air. It is also found that the ohmic polarization in the electrolyte and the activation polarization in the anode and cathode have major influence on the performance. If a count flow approach is employed the inlet temperature for the fuel stream should be close to the outlet temperature for the air flow to avoid a too high temperature gradient. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
anode-supported, SOFC, COMSOL Multiphysics, CFD, LTNE
in
[Host publication title missing]
pages
11 pages
publisher
American Society Of Mechanical Engineers (ASME)
conference name
ASME 2009 Seventh International Fuel Cell Science, Engineering and Technology Conference
external identifiers
  • wos:000273473100064
  • scopus:77953764846
language
English
LU publication?
yes
id
802f85e1-2d22-4d04-ac42-0097464904e7 (old id 1397844)
date added to LUP
2009-05-19 14:23:57
date last changed
2017-09-10 04:58:27
@inproceedings{802f85e1-2d22-4d04-ac42-0097464904e7,
  abstract     = {Fuel cells are promising for future energy systems, since they are energy efficient and, when hydrogen is used as fuel, there are no emissions of greenhouse gases. Fuel cells have during recent years various improvements, however the technology is still in the early phases of development, this can be noted by the lack of dominant design both for singe fuel cells, stacks and for entire fuel cell systems. In this study a CFD approach (COMSOL Multiphysics) is employed to investigate the effect on temperature distribution from inlet temperature, oxygen surplus, ionic conductivity and current density for an anode-supported intermediate temperature solid oxide fuel cell (IT-SOFC). The developed model is based on the governing equations of heat-, mass- and momentum transport. A local temperature non equilibrium (LTNE) approach is introduced to calculate the temperature distribution in the gas- and solid phase separately. <br/><br>
<br/><br>
The results show that the temperature increasing along the flow direction is controlled by the degree of surplus air. It is also found that the ohmic polarization in the electrolyte and the activation polarization in the anode and cathode have major influence on the performance. If a count flow approach is employed the inlet temperature for the fuel stream should be close to the outlet temperature for the air flow to avoid a too high temperature gradient.},
  author       = {Andersson, Martin and Yuan, Jinliang and Sundén, Bengt and Wang, Wei Guo},
  booktitle    = {[Host publication title missing]},
  keyword      = {anode-supported,SOFC,COMSOL Multiphysics,CFD,LTNE},
  language     = {eng},
  pages        = {539--549},
  publisher    = {American Society Of Mechanical Engineers (ASME)},
  title        = {LTNE approach and simulation for anode-supported SOFCs},
  year         = {2009},
}