Fuel Cell System: Modeling and Experiments

Ammonia SOFC system modeling and simulation

• Modeling NH3-fueled Solid Oxide Fuel Cell (SOFC) system with 0D simulation tool (Cantera) - reformer, stack, heat exchanger, condenser, catalytic combustor, etc.

• Parametric study to find design and off-design operating point - utilization factor (fuel), excess air ratio, reforming duty (external / internal reforming) by considering heat balance and particular characteristics of each component.

• Hyunsik, Tae Young, Hye Seong, and Seo Hyeong are doing this work.

Catalyst experiments - ammonia cracking and anode off-gas combustion

• Finding the light-off temperature of ammonia decomposition reaction for various catalysts - noble and transition metals (e.g. Pt, Ni).

• Reducing NOx emissions from anode off-gas catalytic combustion caused by small fraction of ammonia residue - conducting catalytic reactor experiments with laminar flow reactor setup.

• Sechul is doing this work in collaboration with KIMM.

References

[1] Sechul Oh and Han Ho Song. "Exergy analysis on non-catalyzed partial oxidation reforming using homogeneous charge compression ignition engine in a solid oxide fuel cell system." International Journal of Hydrogen Energy 43.5 (2018): 2943-2960.

[2] Sangho Lee, Sechul Oh, et al. "Development of an ammonia decomposition reactor, afterburner and post-decomposition reactor for 1 kW solid oxide fuel cells using ammonia." Energy Conversion and Management 314 (2024): 118661.