Journal article
Steady-state multiplicity in a solid oxide fuel cell: Practical considerations
Chemical engineering science, v 67(1)
2012
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Steady-state multiplicity in a solid oxide fuel cell (SOFC) in three modes of operation, constant ohmic external load, potentiostatic and galvanostatic, is studied using a detailed first-principles lumped model. The SOFC model is derived by accounting for heat and mass transfer as well as electrochemical processes taking place inside the fuel cell. Conditions under which the fuel cell exhibits steady state multiplicity are determined. The effects of operating conditions such as convection heat transfer coefficient and inlet fuel and air temperatures and velocities on the steady state multiplicity regions are studied. Depending on the operating conditions, the cell exhibits one or three steady states. For example, it has three steady states: (a) at low external load resistance values in constant ohmic external load operation and (b) at low cell voltage in potentiostatic operation.
► A mathematical model of a solid oxide fuel cell is developed. ► The existence of steady-state multiplicity is studied. ► The occurrence of ignition and extinction in the cell temperature is shown. ► The dynamic behavior of the cell to changes in load resistance is studied.
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Details
- Title
- Steady-state multiplicity in a solid oxide fuel cell: Practical considerations
- Creators
- Mona BavarianMasoud Soroush
- Publication Details
- Chemical engineering science, v 67(1)
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000296743200002
- Scopus ID
- 2-s2.0-81155132564
- Other Identifier
- 991014878082104721
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- Web of Science research areas
- Engineering, Chemical