0

Full Content is available to subscribers

Subscribe/Learn More  >

Numerical Study on Transient Characteristics of a Tubular SOFC Cell

[+] Author Affiliations
Daisuke Shiomi, Hiroshi Iwai, Hideo Yoshida

Kyoto University, Kyoto, Japan

Kenjiro Suzuki

Shibaura Institute of Technology, Saitama, Japan

Paper No. FUELCELL2005-74171, pp. 281-288; 8 pages
doi:10.1115/FUELCELL2005-74171
From:
  • ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology
  • 3rd International Conference on Fuel Cell Science, Engineering and Technology
  • Ypsilanti, Michigan, USA, May 23–25, 2005
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-3764-5 | eISBN: 0-7918-3757-2
  • Copyright © 2005 by ASME

abstract

Fundamental performance and the transient characteristics of a small tubular SOFC were numerically investigated. The model simultaneously treats momentum, heat and mass transfer, electrochemical phenomena and an electric circuit. Transient characteristics of a cell upon a sudden change of the cell terminal voltage or the air flow rate were examined. During its process, a steady simulation was first conducted and its result was used as the initial condition for the transient calculation. The transient calculation continued until a steady state under the new boundary condition was obtained. Discussions on the time response of the cell performance and thermal field were made in order to find the key factors mainly affecting the transient characteristics. To confirm what factors affect on the transient behavior, calculations were conducted for two different cell geometries, which have different cell diameters, but have same ratios of cell heat capacity to the heat generating area. As a result, it was found that the transient characteristics of a cell are primarily governed by the balance between the heat capacity of a cell and the heat generation by electrochemical reactions. The large heat capacity of the cell is one of the key problems affecting the transient behavior, limiting its quick response. A numerical demonstration is shown in which a rapid cell status change was achieved by controlling its operation conditions.

Copyright © 2005 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In