Abstract
A model for a cathode-supported tubular SOFC operating with H 2 and syngas derived from solid fuels has been developed. Momentum, mass, energy and charge transport equations coupled with electrochemical reactions (H 2 , CO oxidation and O 2 reduction) as well as chemical (water-gas shift) reaction are considered in the model. The model also takes into account the radiative heat transfer between the cell and air-preheating tube. Due to the lack of experimental data for syngas in tubular cells, the model is validated against published experimental data using H 2 - The model results are in good agreement with experimental data. The distributions of temperature, current density, reversible cell voltage, overpotential and species mole fractions within the cell are discussed in the case of a fuel consisting of a mixture of H 2 , CO, H 2 D, CO 2 and N 2 .
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