Transient Modeling of Tubular-Designed IIR-SOFC Fueled by Methane, Methanol, and Ethanol

  • Pannipha Dokmaingam Mae Fah Luang University
  • Sureewan Areesinpitak Mae Fah Luang University
  • Navadol Laosiripojana King Mongkut’s University of Technology Thonburi

PDF Downloads



Download data is not yet available.

Abstract

It is known that the heating rate during starting-up of Solid Oxide Fuel Cell (SOFC) plays an important role of system performance and lifetime. In the present work, an axial 2-D tubular Indirect Internal Reforming SOFC (IIR-SOFC) model fueled by methane, methanol, and ethanol was developed with the aim of predicting the system temperature gradient during the starting-up period. All predicted results was calculated by using COMSOL®. The system was also compared with typical SOFC fueled by hydrogen. It was found that hydrogen heating gas required the lowest time to achieve the steady state (around 2 minutes) with the highest heating rate 0.93 K/s, which is not compatible for the thermal stress of SOFC material. The uses of methane, methanol, and ethanol as primary fuel can enhance compatible heating rate with the cell material, from which IIR-SOFC fueled by methanol is the best option in terms of its slow heating rate and high system efficiency. It is noted that the effects of inlet steam/carbon (S/C) ratio and gas flow pattern were also studied. It was observed that changing in S/C ratio is not significantly influence to temperature behaviors of the system. Meanwhile, IIR-SOFC with co-flow pattern provided smoother temperature gradient along cell and higher power density at steady state condition than that with counter-flow pattern.

Author Biographies
Pannipha Dokmaingam

School of  Health Science, Mae Fah Luang University, Chiang Rai 57100,  Thailand

Sureewan Areesinpitak

Materials for Energy and Environment Research Group, Mae Fah Luang University, Chiang Rai 57100, Thailand

Navadol Laosiripojana

The Joint Graduate School of Energy and Environment, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand

Keywords
Indirect internal reforming, heat-up period, transient, dynamic model, solid oxide fuel cell.

Authors who publish with Engineering Journal agree to transfer all copyright rights in and to the above work to the Engineering Journal (EJ)'s Editorial Board so that EJ's Editorial Board shall have the right to publish the work for nonprofit use in any media or form. In return, authors retain: (1) all proprietary rights other than copyright; (2) re-use of all or part of the above paper in their other work; (3) right to reproduce or authorize others to reproduce the above paper for authors' personal use or for company use if the source and EJ's copyright notice is indicated, and if the reproduction is not made for the purpose of sale.

Article Statistics
Total PDF downloads: 136