Planar Solid Oxide Fuel Cell Modeling and Optimization Targeting the Stack’s Temperature Gradient Minimization

Minimization of undesirable temperature gradients in all dimensions of a planar solid oxide fuel cell (SOFC) is central to the thermal management and commercialization of this electrochemical reactor. This article explores the effective operating variables on the temperature gradient in a multilayer SOFC stack and presents a trade-off optimization. Three promising approaches are numerically tested via a model-based sensitivity analysis. The numerically efficient thermo-chemical model that had already been developed by the authors for the cell scale investigations (Tang et al. Chem. Eng. J. 2016, 290, 252–262) is integrated and extended in this work to allow further thermal studies at commercial scales. Initially, the most common approach for the minimization of stack’s thermal inhomogeneity, i.e., usage of the excess air, is critically assessed. Subsequently, the adjustment of inlet gas temperatures is introduced as a complementary methodology to reduce the efficiency loss due to application of excess air...

[1]  I. Celik,et al.  A numerical study of cell-to-cell variations in a SOFC stack , 2004 .

[2]  Prodromos Daoutidis,et al.  Control of an energy integrated solid oxide fuel cell system , 2011, Proceedings of the 2011 American Control Conference.

[3]  Moses O. Tadé,et al.  Development and validation of a computationally efficient pseudo 3D model for planar SOFC integrated with a heating furnace , 2016 .

[4]  Vincent Heuveline,et al.  Performance analysis of a SOFC under direct internal reforming conditions , 2007 .

[5]  Daniel Favrat,et al.  Simulation of SOFC stack and repeat elements including interconnect degradation and anode reoxidation risk , 2006 .

[6]  Xi Li,et al.  Dynamic modeling and analysis of a 5-kW solid oxide fuel cell system from the perspectives of cooperative control of thermal safety and high efficiency , 2015 .

[7]  S. S. Shy,et al.  On flow uniformity in various interconnects and its influence to cell performance of planar SOFC , 2008 .

[8]  Fumihiko Yoshiba,et al.  Numerical analysis of electrochemical characteristics and heat/species transport for planar porous-electrode-supported SOFC , 2007 .

[9]  S. Kakaç,et al.  A review of numerical modeling of solid oxide fuel cells , 2007 .

[10]  Raymond J. Gorte,et al.  Direct oxidation of hydrocarbons in a solid-oxide fuel cell , 2000, Nature.

[11]  Lars Sjunnesson,et al.  Combined solid oxide fuel cell and gas turbine systems for efficient power and heat generation , 2000 .

[12]  Xiuling Cao,et al.  Numerical analysis of optimal performance of planar electrode supported solid oxide fuel cell at various syngas flow rates , 2014 .

[13]  Jasbir S. Arora,et al.  Survey of multi-objective optimization methods for engineering , 2004 .

[14]  Xiongwen Zhang,et al.  Numerical study on the thermal characteristics in a tubular solid oxide fuel cell with indirect internal reformer , 2009 .

[15]  W. Guan,et al.  Temperature Measurement and Distribution Inside Planar SOFC Stacks , 2012 .

[16]  Zuomin Dong,et al.  Optimal fuel cell system design considering functional performance and production costs , 1998 .

[17]  Changyun Wen,et al.  Anode gas recirculation behavior of a fuel ejector in hybrid solid oxide fuel cell systems: Performance evaluation in three operational modes , 2008 .

[18]  Khaliq Ahmed,et al.  Planar SOFC system modelling and simulation including a 3D stack module , 2016 .

[19]  Diego Larrain,et al.  Solid oxide fuel cell stack simulation and optimization, including experimental validation and transient behavior , 2005 .

[20]  S. Singhal.  Advances in solid oxide fuel cell technology , 2000 .

[21]  Ludger Blum,et al.  Analysis of solid oxide fuel cell system concepts with anode recycling , 2013 .

[22]  Eric S. Fraga,et al.  A multi-objective optimisation model for a general polymer electrolyte membrane fuel cell system , 2010 .

[23]  Kohei Ito,et al.  Performance analysis of planar-type unit SOFC considering current and temperature distributions , 2000 .

[24]  Lieh-Kwang Chiang,et al.  Thermo-electrochemical and thermal stress analysis for an anode-supported SOFC cell , 2008 .

[25]  E. Achenbach.  Three-dimensional and time-dependent simulation of a planar solid oxide fuel cell stack , 1994 .

[26]  Ricardo Martinez-Botas,et al.  A Study of Temperature Distribution Across a Solid Oxide Fuel Cell Stack , 2010 .

[27]  Khaliq Ahmed,et al.  Solid oxide fuel cell reactor analysis and optimisation through a novel multi-scale modelling strategy , 2015, Comput. Chem. Eng..

[28]  L. Blum,et al.  FUEL CELLS – SOLID OXIDE FUEL CELLS | Systems , 2009 .

[29]  Guilan Wang,et al.  Computational analysis of thermo-fluid and electrochemical characteristics of MOLB-type SOFC stacks , 2007 .

[30]  Nouri J. Samsatli,et al.  Fuel cell systems optimisation – Methods and strategies , 2011 .

[31]  Steven B. Kraines,et al.  Optimization of an SOFC-based decentralized polygeneration system for providing energy services in an office-building in Tōkyō , 2006 .

[32]  C. Adjiman,et al.  Anode-supported intermediate temperature direct internal reforming solid oxide fuel cell. I: model-based steady-state performance , 2004 .

[33]  François Maréchal,et al.  A methodology for thermo-economic modeling and optimization of solid oxide fuel cell systems , 2007 .