Surface-to-Surface Radiation Exchange Effects in a 3D SOFC Stack Unit Cell

Document Type

Conference Proceeding

Publication Date


Publication Title

International Conference on Fuel Cell Science, Engineering and Technology

Conference Name

ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology collocated with the ASME 2012 6th International Conference on Energy Sustainability


This paper reports a new study where radiation effects are studied in details in an SOFC stack. The 3D model used includes and couples fluid dynamics, electrochemistry, electrical conduction, diffusion, and heat transfer physics. The model was built using in-house experimental voltage-current density data for validation purposes. The objective of this study is to understand the effects of radiation in the flow channels of SOFC stacks. Both gas radiation and surface-to-surface heat exchange are considered. This study indicates that gas radiation is negligible when compared to surface-to-surface heat exchange. It is also found that surface-to-surface heat exchange cannot be neglected and actually provides a more uniform temperature distribution along the SOFC stack. Heat transfer via convection is also significant and should be included when modeling similar situations. Finally, the model indicates that viscous dissipation is a negligible source of heat generation.

Rights Statement

© 2012 by ASME