skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Analysis of Percent On-Cell Reformation of Methane in SOFC Stacks and the Effects on Thermal, Electrical, and Mechanical Performance

Abstract

Numerical simulations were performed to determine the effect that varying the percent on-cell steam-methane reformation would have on the thermal, electrical, and mechanical performance of generic, planar solid oxide fuel cell stacks. The study was performed using three-dimensional model geometries for cross-, co-, and counter-flow configuration stacks of 10x10- and 20x20-cm cell sizes. The analysis predicted the stress and temperature difference would be minimized for the 10x10-cm counter- and cross-flow stacks when 40 to 50% of the reformation reaction occurred on the anode. Gross electrical power density was virtually unaffected by the reforming. The co-flow stack benefited most from the on-cell reforming and had the lowest anode stresses of the 20x20-cm stacks. The analyses also suggest that airflows associated with 15% air utilization may be required for cooling the larger (20x20-cm) stacks.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
921399
Report Number(s):
PNNL-SA-53556
AA2530000; TRN: US200804%%797
DOE Contract Number:
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: ECS Transactions, 5(1):473-480; Journal Volume: 5; Journal Issue: 1
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; 30 DIRECT ENERGY CONVERSION; AIR; ANODES; CONFIGURATION; METHANE; PERFORMANCE; POWER DENSITY; SOLID OXIDE FUEL CELLS; STRESSES; solid oxide fuel cell; stack; modeling; on-cell; reformation; electrochemistry

Citation Formats

Recknagle, Kurtis P., Koeppel, Brian J., Sun, Xin, Khaleel, Mohammad A., Yokuda, Satoru T., and Singh, Prabhakar. Analysis of Percent On-Cell Reformation of Methane in SOFC Stacks and the Effects on Thermal, Electrical, and Mechanical Performance. United States: N. p., 2007. Web. doi:10.1149/1.2729027.
Recknagle, Kurtis P., Koeppel, Brian J., Sun, Xin, Khaleel, Mohammad A., Yokuda, Satoru T., & Singh, Prabhakar. Analysis of Percent On-Cell Reformation of Methane in SOFC Stacks and the Effects on Thermal, Electrical, and Mechanical Performance. United States. doi:10.1149/1.2729027.
Recknagle, Kurtis P., Koeppel, Brian J., Sun, Xin, Khaleel, Mohammad A., Yokuda, Satoru T., and Singh, Prabhakar. Mon . "Analysis of Percent On-Cell Reformation of Methane in SOFC Stacks and the Effects on Thermal, Electrical, and Mechanical Performance". United States. doi:10.1149/1.2729027.
@article{osti_921399,
title = {Analysis of Percent On-Cell Reformation of Methane in SOFC Stacks and the Effects on Thermal, Electrical, and Mechanical Performance},
author = {Recknagle, Kurtis P. and Koeppel, Brian J. and Sun, Xin and Khaleel, Mohammad A. and Yokuda, Satoru T. and Singh, Prabhakar},
abstractNote = {Numerical simulations were performed to determine the effect that varying the percent on-cell steam-methane reformation would have on the thermal, electrical, and mechanical performance of generic, planar solid oxide fuel cell stacks. The study was performed using three-dimensional model geometries for cross-, co-, and counter-flow configuration stacks of 10x10- and 20x20-cm cell sizes. The analysis predicted the stress and temperature difference would be minimized for the 10x10-cm counter- and cross-flow stacks when 40 to 50% of the reformation reaction occurred on the anode. Gross electrical power density was virtually unaffected by the reforming. The co-flow stack benefited most from the on-cell reforming and had the lowest anode stresses of the 20x20-cm stacks. The analyses also suggest that airflows associated with 15% air utilization may be required for cooling the larger (20x20-cm) stacks.},
doi = {10.1149/1.2729027},
journal = {ECS Transactions, 5(1):473-480},
number = 1,
volume = 5,
place = {United States},
year = {Mon Apr 30 00:00:00 EDT 2007},
month = {Mon Apr 30 00:00:00 EDT 2007}
}