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Gas Flow and Heat Transfer Analysis for an Anode Duct in Reduced Temperature SOFCs

In English

Författare

Redaktör

  • Jinliang Yuan
  • Masoud Rokni
  • Bengt Sundén

Summary, in English

In this study, a fully three-dimensional calculation method has been further developed to simulate and analyze various processes in a thick anode duct. The composite duct consists of a porous layer, the flow duct and solid current connector. The analysis takes the electrochemical reactions into account. Momentum and heat transport together with gas species equations have been solved by coupled source terms and variable thermo-physical properties (such as density, viscosity, specific heat, etc.) of the fuel gases mixture. The unique fuel cell conditions such as the combined thermal boundary conditions on solid walls, mass transfer (generation and consumption) associated with the electrochemical reaction and gas permeation to / from the porous electrode are applied in the analysis.

Results from this study are presented for various governing parameters in order to identify the important factors on the fuel cell performance. It is found that gas species convection has a significant contribution to the gas species transport from / to the active reaction site; consequently characteristics of both gas flow and heat transfer vary widely due to big permeation to the porous layer in the entrance region and species mass concentration related diffusion after a certain distance downstream the inlet.

Avdelning/ar

Publiceringsår

2003

Språk

Engelska

Sidor

209-216

Publikation/Tidskrift/Serie

Fuel Cell Science, Engineering and Technology

Dokumenttyp

Konferensbidrag

Förlag

American Society Of Mechanical Engineers (ASME)

Ämne

  • Energy Engineering

Conference name

First International Conference on Fuel Cell Science, Engineering and Technology

Conference date

2003-04-21 - 2003-04-23

Conference place

Rochester, NY, United States

Status

Published

ISBN/ISSN/Övrigt

  • ISBN: 0-7918-3668-1