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Networked solid oxide fuel cell stacks combined with a gas turbine cycle

Selimovic, Azra LU and Pålsson, Jens LU (2002) Seventh Grove Fuel Cell Symposium In Journal of Power Sources 106(1-2). p.76-82
Abstract
An improved design of fuel cells stacks arrangement has been suggested before for MCFC where reactant streams are ducted such that they are fed and recycled among multiple MCFC stacks in series. By networking fuel cell stacks, increased efficiency, improved thermal balance, and higher total reactant utilisation can be achieved. In this study, a combination of networked solid oxide fuel cell (SOFC) stacks and a gas turbine (GT) has been modelled and analysed. In such a combination, the stacks are operating in series with respect to the fuel flow. In previous studies conducted on hybrid SOFC/GT cycles by the authors, it was shown that the major part of the output of such cycles can be addressed to the fuel cell, In those studies, a single... (More)
An improved design of fuel cells stacks arrangement has been suggested before for MCFC where reactant streams are ducted such that they are fed and recycled among multiple MCFC stacks in series. By networking fuel cell stacks, increased efficiency, improved thermal balance, and higher total reactant utilisation can be achieved. In this study, a combination of networked solid oxide fuel cell (SOFC) stacks and a gas turbine (GT) has been modelled and analysed. In such a combination, the stacks are operating in series with respect to the fuel flow. In previous studies conducted on hybrid SOFC/GT cycles by the authors, it was shown that the major part of the output of such cycles can be addressed to the fuel cell, In those studies, a single SOFC with parallel gas flows to individual cells were assumed. It can be expected that if the performance of the fuel cell is enhanced by networking, the overall system performance will improve. In the first part of this paper, the benefit of the networked stacks is demonstrated for a stand alone stack while the second part analyses and discusses the impact networking of the stacks has on the SOFC/GT system performance and design. For stacks with both reactant streams in series, a significant increase of system efficiency was found (almost 5% points), which, however, can be explained mainly by an improved thermal management. (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
solid oxide fuel cell, multistage oxidation, mathematical modelling, combined cycles
in
Journal of Power Sources
volume
106
issue
1-2
pages
76 - 82
publisher
Elsevier
conference name
Seventh Grove Fuel Cell Symposium
external identifiers
  • wos:000175342800012
  • scopus:0036535513
ISSN
1873-2755
0378-7753
DOI
10.1016/S0378-7753(01)01051-5
language
English
LU publication?
yes
id
fefe8f01-0376-4686-890c-292d8c6bc342 (old id 338567)
date added to LUP
2007-11-28 15:50:42
date last changed
2017-01-08 04:04:35
@inproceedings{fefe8f01-0376-4686-890c-292d8c6bc342,
  abstract     = {An improved design of fuel cells stacks arrangement has been suggested before for MCFC where reactant streams are ducted such that they are fed and recycled among multiple MCFC stacks in series. By networking fuel cell stacks, increased efficiency, improved thermal balance, and higher total reactant utilisation can be achieved. In this study, a combination of networked solid oxide fuel cell (SOFC) stacks and a gas turbine (GT) has been modelled and analysed. In such a combination, the stacks are operating in series with respect to the fuel flow. In previous studies conducted on hybrid SOFC/GT cycles by the authors, it was shown that the major part of the output of such cycles can be addressed to the fuel cell, In those studies, a single SOFC with parallel gas flows to individual cells were assumed. It can be expected that if the performance of the fuel cell is enhanced by networking, the overall system performance will improve. In the first part of this paper, the benefit of the networked stacks is demonstrated for a stand alone stack while the second part analyses and discusses the impact networking of the stacks has on the SOFC/GT system performance and design. For stacks with both reactant streams in series, a significant increase of system efficiency was found (almost 5% points), which, however, can be explained mainly by an improved thermal management.},
  author       = {Selimovic, Azra and Pålsson, Jens},
  booktitle    = {Journal of Power Sources},
  issn         = {1873-2755},
  keyword      = {solid oxide fuel cell,multistage oxidation,mathematical modelling,combined cycles},
  language     = {eng},
  number       = {1-2},
  pages        = {76--82},
  publisher    = {Elsevier},
  title        = {Networked solid oxide fuel cell stacks combined with a gas turbine cycle},
  url          = {http://dx.doi.org/10.1016/S0378-7753(01)01051-5},
  volume       = {106},
  year         = {2002},
}