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}
}
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