In this paper, a detailed model of a solid oxide fuel cell (SOFC) tube is presented. The SOFC tube is discretized along its longitudinal axis. Detailed models of the kinetics of the shift and reforming reactions are introduced in order to evaluate their rates along the SOFC axis. Energy, moles, and mass balances are performed for each slice of the components under investigation, allowing the calculation of temperature profiles. Friction factors and heat-exchange coefficients are calculated by means of experimental correlations. As for the SOFC overvoltages, the activation overvoltage is calculated using the Butler–Volmer equation and semiempirical correlations for the exchange current density, Ohmic losses are evaluated introducing an appropriate electrical scheme and material resistivities, and concentration overvoltage is calculated by means of both binary and Knudsen diffusion coefficients. On the basis of this model, a case study is presented and discussed, in which temperatures, pressures, chemical compositions, and electrical parameters are evaluated for each slice of the SOFC tube under investigation. Finally, a sensitivity analysis is performed, in order to investigate the influence of the design parameters on the performance of the system.
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e-mail: frcalise@unina.it
e-mail: dentice@unina.it
e-mail: palombo@unina.it
e-mail: laura.vanoli@unina.it
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May 2008
This article was originally published in
Journal of Fuel Cell Science and Technology
Research Papers
One-Dimensional Model of a Tubular Solid Oxide Fuel Cell
Francesco Calise,
Francesco Calise
DETEC,
e-mail: frcalise@unina.it
Università degli Studi di Napoli Federico II
, Piazzale Tecchio 80, 80125 Naples, Italy
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Massimo Dentice d’Accadia,
Massimo Dentice d’Accadia
DETEC,
e-mail: dentice@unina.it
Università degli Studi di Napoli Federico II
, Piazzale Tecchio 80, 80125 Naples, Italy
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Adolfo Palombo,
Adolfo Palombo
DETEC,
e-mail: palombo@unina.it
Università degli Studi di Napoli Federico II
, Piazzale Tecchio 80, 80125 Naples, Italy
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Laura Vanoli
Laura Vanoli
Dipartimento di Scienza degli Alimenti,
e-mail: laura.vanoli@unina.it
Università degli Studi di Napoli Federico II
, Via Università 100, 80055 Portici, Napoli, Italy
Search for other works by this author on:
Francesco Calise
DETEC,
Università degli Studi di Napoli Federico II
, Piazzale Tecchio 80, 80125 Naples, Italye-mail: frcalise@unina.it
Massimo Dentice d’Accadia
DETEC,
Università degli Studi di Napoli Federico II
, Piazzale Tecchio 80, 80125 Naples, Italye-mail: dentice@unina.it
Adolfo Palombo
DETEC,
Università degli Studi di Napoli Federico II
, Piazzale Tecchio 80, 80125 Naples, Italye-mail: palombo@unina.it
Laura Vanoli
Dipartimento di Scienza degli Alimenti,
Università degli Studi di Napoli Federico II
, Via Università 100, 80055 Portici, Napoli, Italye-mail: laura.vanoli@unina.it
J. Fuel Cell Sci. Technol. May 2008, 5(2): 021014 (15 pages)
Published Online: April 21, 2008
Article history
Received:
November 30, 2005
Revised:
June 8, 2006
Published:
April 21, 2008
Citation
Calise, F., Dentice d’Accadia, M., Palombo, A., and Vanoli, L. (April 21, 2008). "One-Dimensional Model of a Tubular Solid Oxide Fuel Cell." ASME. J. Fuel Cell Sci. Technol. May 2008; 5(2): 021014. https://doi.org/10.1115/1.2784296
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