Modeling Validation and Simulation of an Anode Supported SOFC including Mass and Heat Transport, Fluid Flow and Chemical Reactions

Martin Andersson, Jinliang Yuan, Bengt Sundén, Ting Shuai Li, Wei Guo Wang

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingResearchpeer-review

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Abstract

Fuel cells are electrochemical devices that directly transform chemical energy into electricity, which are promising for future energy systems, since they are energy efficient and, when hydrogen is used as fuel, there are no direct emissions of greenhouse gases. The cell performance depends strongly on the material characteristics, the operating conditions and the chemical reactions that occur inside the cell. The chemical- And electrochemical reaction rates depend on temperature, material structure, catalytic activity, degradation and the partial pressures for the different species components. There is a lack of information, within the open literature, concerning the fundamentals behind these reactions. Experimental as well as modeling studies are needed to reduce this gap. In this study experimental data collected from an intermediate temperature standard SOFC with H2/H2O in the fuel stream are used to validate a previously developed computational fluid dynamics model based on the finite element method. The developed model is based on the governing equations of heat and mass transport and fluid flow, which are solved together with kinetic expressions for internal reforming reactions of hydrocarbon fuels and electrochemistry. This model is further updated to describe the experimental environment concerning cell design. Discussion on available active area for electrochemical reactions and average ionic transport distance from the anodic- to the cathodic three-phase boundary (TPB) are presented. The fuel inlet mole fractions are changed for the validated model to simulate a H2/H2O mixture and 30 % pre-reformed natural gas.

Original languageEnglish
Title of host publicationASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology. Collocated with ASME 2011 5th International Conference on Energy Sustainability, FUELCELL 2011
PublisherAmerican Society Of Mechanical Engineers (ASME)
Pages317-327
Number of pages11
ISBN (Print)9780791854693
DOIs
Publication statusPublished - 2011 Dec 1
EventASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology. Collocated with ASME 2011 5th International Conference on Energy Sustainability, FUELCELL 2011 - Washington, DC, United States
Duration: 2011 Aug 72011 Aug 10

Conference

ConferenceASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology. Collocated with ASME 2011 5th International Conference on Energy Sustainability, FUELCELL 2011
Country/TerritoryUnited States
CityWashington, DC
Period2011/08/072011/08/10

Subject classification (UKÄ)

  • Energy Engineering

Keywords

  • Active area
  • COMSOL multiphysics
  • Ionic transport distance
  • Modeling
  • SOFC
  • Validation

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