Influence of convective heat transfer by air flow on local current/temperatures along microtubular solid oxide fuel cells in-situ identified by electrode-segmentation method for Co- and counter-flow configurations

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Contribution of spatial temperature variations to thermo-mechanical stresses along microtubular solid oxide fuel cells is often numerically estimated with local temperatures calculated by thermo-electrochemical models. This method is preferred due to the lack of experimental data. Not only to provide experimental data but also to reduce the temperature variations, in this paper we are analyzing the in-situ measured local temperatures and currents along a cell. We have measured the local properties by electrode-segmentation method for co- and counter-flow configurations at various air flow velocities. Gas flow configuration shows a substantial impact on both longitudinal temperature and current variations. Under the identical conditions, the counter-flow exhibits larger variations in both temperatures and currents. We conclude that air flow velocity determines the longitudinal temperature distributions, whereas its effect on the current distribution profile is negligible. With these findings, we anticipate larger thermo-mechanical stresses in the counter-flow configuration at high air flow velocities.

Original languageEnglish
Title of host publicationSolid Oxide Fuel Cells 14, SOFC 2015
EditorsK. Eguchi, S. C. Singhal
PublisherElectrochemical Society Inc.
Pages2141-2150
Number of pages10
Edition1
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - Jan 1 2015
Event14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage - Glasgow, United Kingdom
Duration: Jul 26 2015Jul 31 2015

Publication series

NameECS Transactions
Number1
Volume68
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage
CountryUnited Kingdom
CityGlasgow
Period7/26/157/31/15

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Fingerprint Dive into the research topics of 'Influence of convective heat transfer by air flow on local current/temperatures along microtubular solid oxide fuel cells in-situ identified by electrode-segmentation method for Co- and counter-flow configurations'. Together they form a unique fingerprint.

  • Cite this