Local Non-Equilibrium Thermal Effects in Solid Oxide Fuel Cells with Various Fuels

Keqing Zheng, Qiong Sun, Meng Ni

Research output: Journal article publicationJournal articleAcademic researchpeer-review

21 Citations (Scopus)

Abstract

KGaA, Weinheim Local thermal equilibrium (LTE) is a common assumption used in thermal modeling of solid oxide fuel cells (SOFCs). However, its validity has not been fully verified. To examine the validity of the LTE assumption, a thermal model has been developed to evaluate the local thermal non-equilibrium effect of SOFC electrodes with various fuels, considering methane internal reforming and ammonia thermal cracking in the anode. Although the local thermal non-equilibrium effect for ammonia-fed SOFCs was more pronounced than that for hydrogen-fed SOFCs, the local thermal equilibrium assumption can be safely adopted for SOFC modeling for a wide range of operating/structural parameters and for various fuels, such as hydrogen, ammonia, and methane.
Original languageEnglish
Pages (from-to)35-41
Number of pages7
JournalEnergy Technology
Volume1
Issue number1
DOIs
Publication statusPublished - 1 Jan 2013

Keywords

  • electrochemistry
  • fuel cells
  • hydrogen
  • thermochemistry
  • thermodynamics

ASJC Scopus subject areas

  • Energy(all)

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