التفاصيل البيبلوغرافية
| العنوان: |
Validation challenges in solid oxide electrolysis cell modeling fueled by low Steam/CO2 ratio. |
| المؤلفون: |
Kazempoor, P.1 (AUTHOR) pkazempoor@ou.edu, Asadi, J.1 (AUTHOR), Braun, R.J.2 (AUTHOR) |
| المصدر: |
International Journal of Hydrogen Energy. Apr2022, Vol. 47 Issue 36, p15952-15959. 8p. |
| مصطلحات موضوعية: |
*WATER gas shift reactions, *ELECTROLYTIC reduction, *ELECTROLYSIS, *CARBON dioxide, *STEAM flow, *FUEL cells, *WATER supply |
| الشركة/الكيان: |
IDAHO National Laboratory |
| مستخلص: |
This study addresses some of the challenges in the modeling of solid oxide electrolysis cells (SOECs), particularly for feed gases containing low inlet steam-to-CO 2 concentration ratios. The common approach used for SOEC modeling is to neglect the CO 2 electrochemical reduction reaction. A comprehensive model validation versus experimental results presented by the Idaho National Laboratory (INL) is performed in this paper. Our validation results under various operating conditions show that the model deviation with experimental data increases above certain current densities, e.g., 1200 Am−2. It can also be seen that the electrochemical reaction involving CO 2 can only be neglected when the steam flow supplied to the cell is high enough to support the water-gas shift reaction. Suppose the concentration of inlet water supply is not enough to support the reverse water gas shift reaction. In that case, the electrochemical reduction of CO 2 has to be considered to avoid model-predictive results that are far from available experimental observations. • Solid oxide electrolysis cells modeling Challenges at low inlet steam-to-CO 2 concentration ratios are presented. • CO 2 Electrochemical reaction is negligible when the inlet steam flow is high to support the water-gas shift reaction. • Numerical results can be far from experimental depending on the fuel composition and inlet steam into a cell. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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