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Reacting flow coupling with thermal impacts in a single solid oxide fuel cell

Chaudhary, T.N., Saleem, U. and Chen, B. (2019) Reacting flow coupling with thermal impacts in a single solid oxide fuel cell. International Journal of Hydrogen Energy. 44(16), pp. 8425-8438. 0360-3199.

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20598:62370
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Chaudhary_et_al_2019_Reacting_Flow_Coupling_with_Thermal_Impacts_in_a_single_Solid_Oxide_Fuel_Cell
Chaudhary_et_al_2019_Reacting_Flow_Coupling_with_Thermal_Impacts_in_a_single_Solid_Oxide_Fuel_Cell.pdf - Accepted Version
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Abstract:
Thermal impacts are the major concern for the designs of electrolyte of Solid Oxide fuel cells (SOFCs) due to the high temperature operating conditions. In this study, the coupling dynamics of electrochemical reacting flows with heat transfer and generations of thermal strains and stresses (thermal impact) of solid electrolyte and porous electrodes are investigated in a single SOFC by numerical simulations. Modelling results from a test case show that the coupling is necessary as the electrochemical and thermal properties of the cell strongly depends on temperature, meanwhile, the thermal strains and stresses on temperature gradients. The differences in current density and thermal strain gradients predicted by coupling and decoupling simulations are as larger as 20% because of the strong dependents of ionic conductivity of the electrolyte material on temperature, the maximum thermal strain, thermal stresses, and temperature are all about 5%. It is identified that the high operation voltage benefits to the thermal strain, which decreases 20% when the cell operating from 0.5 V to 0.7 V.
Uncontrolled Keywords:
Solid oxide fuel cell, CFD model, Coupling, Cell performance, Temperature, Thermal Strains, Thermal Stresses
Creators:
Chaudhary, T.N., Saleem, U. and Chen, B.
Date:
29 March 2019
Date Type:
Publication
Page Range:
pp. 8425-8438
Journal or Publication Title:
International Journal of Hydrogen Energy
Volume:
44
Number:
16
Number of Pages:
14
Language:
English
ISSN:
0360-3199
Status:
Published / Disseminated
Refereed:
Yes
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