A micro/macroscale model for intermediate temperature solid oxide fuel cells with prescribed fully-developed axial velocity profiles in gas channels

作者：Sohn Sangho; Nam Jin Hyun^*; Jeon Dong Hyup; Kim Charn Jung

来源：International Journal of Hydrogen Energy, 2010, 35(21): 11890-11907.

DOI：10.1016/j.ijhydene.2010.08.063

• Intermediate temperature solid
• oxide fuel cells
• Microscale model
• Heat and mass transport
• Fully-developed flow
• Co-flow and counter-flow
• configuration

A two-dimensional micro/macroscale model is proposed as an efficient numerical framework for simulating intermediate temperature solid oxide fuel cells (IT-SOFCs). This model employs a comprehensive microscale model that describes the detailed electrochemical reactions in Ni/YSZ cermet anodes and LSWYSZ composite cathodes based on the three-phase boundary length (TPBL). A simplified macroscale model has been combined with the microscale model to consider the heat and mass transport processes in IT-SOFCs with prescribed fully-developed laminar velocity profiles in gas channels. A hydrogen-fed IT-SOFC is simulated at various operating conditions in order to demonstrate the capabilities of the proposed micro/macroscale model. The results elucidate the effects of co- and counter-flow configurations, inlet temperature, and air and fuel flow rates on the performance of the IT-SOFC.

• 出版日期2010-11