Dynamic tank in series modeling of direct internal reforming SOFC

Summary A dynamic tank in series reactor model of a direct internally reforming solid oxide fuel cell is presented and validated using experimental data as well as a computational fluid dynamics (CFD) model for the spatial profiles. The effect of the flow distribution pattern at the inlet manifold on the cell performance is studied with this model. The tank in series reactor model provides a reasonable understanding of the spatio-temporal distribution of the key parameters at a much lesser computational cost when compared to CFD methods. The predicted V–I curves agree well with the experimental data at different inlet flows and temperatures, with a difference of less than ±1.5%. In addition, comparison of the steady-state results with two-dimensional contours from a CFD model demonstrates the success of the adopted approach of adjusting the flow distribution pattern at the inlet boundaries of different continuous stirred tank reactor compartments. The spatial variation of the temperature of the PEN structure is captured along with the distributions of the current density and the anode activation over-potential that strongly related to the temperature as well as the species molar fractions. It is found that, under the influence of the flow distribution pattern and reaction rates, the dynamic responses to step changes in voltage (from 0.819 to 0.84 V), fuel flow (15%) and temperature changes (30 °C), on anode side and on cathode side, highly depend on the spatial locations in the cell. In general, the inlet points attain steady state rapidly compared to other regions. Copyright © 2017 John Wiley & Sons, Ltd.

[1]  Murat Peksen,et al.  3D transient multiphysics modelling of a complete high temperature fuel cell system using coupled CFD and FEM , 2014 .

[2]  Murat Peksen,et al.  A 3D CFD model for predicting the temperature distribution in a full scale APU SOFC short stack under transient operating conditions , 2014 .

[3]  L. Kershenbaum,et al.  Modelling of an indirect internal reforming solid oxide fuel cell , 2002 .

[4]  Khaliq Ahmed,et al.  On the effects of geometry and methane reforming kinetics in predicted results from the mechanistic model of a planar SOFC , 2011 .

[5]  Xingjian Xue,et al.  Transient Modeling of Anode-Supported Solid Oxide Fuel Cells , 2009 .

[6]  Il Moon,et al.  An Improved Tank in Series Model for the Direct Methanol Fuel Cell , 2011 .

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

[8]  Christoph Hochenauer,et al.  Three-dimensional numerical and experimental investigation of an industrial-sized SOFC fueled by diesel reformat – Part I: Creation of a base model for further carbon deposition modeling , 2014 .

[9]  B. Haberman,et al.  Three-dimensional simulation of chemically reacting gas flows in the porous support structure of an integrated-planar solid oxide fuel cell , 2004 .

[10]  Sanjay,et al.  Computational analysis of IR-SOFC: Transient, thermal stress, carbon deposition and flow dependency , 2016 .

[11]  H. Tu,et al.  One-dimensional Dynamic Modeling and Simulation of a Planar Direct Internal Reforming Solid Oxide Fuel Cell , 2009 .

[12]  Khaliq Ahmed,et al.  CFD model of a methane fuelled single cell SOFC stack for analysing the combined effects of macro/micro structural parameters , 2013 .

[13]  Biao Huang,et al.  Dynamic modeling of solid oxide fuel cell: The effect of diffusion and inherent impedance , 2005 .

[14]  Thinh X. Ho,et al.  A three-dimensional model for transient performance of a solid oxide fuel cell , 2014 .

[15]  Moses O. Tadé,et al.  A novel concept for improved thermal management of the planar SOFC , 2013 .

[16]  J. Young,et al.  Thermodynamic and transport properties of gases for use in solid oxide fuel cell modelling , 2002 .

[17]  Mustafa Fazil Serincan,et al.  A transient analysis of a micro-tubular solid oxide fuel cell (SOFC) , 2009 .

[18]  Murat Peksen,et al.  3D CFD/FEM analysis of thermomechanical long-term behaviour in SOFCs: Furnace operation with different fuel gases , 2015 .

[19]  Danting Yue,et al.  Three-dimensional CFD modeling of transport phenomena in multi-channel anode-supported planar SOFCs , 2015 .

[20]  Joeri F. M. Denayer,et al.  A tank in series model for alkaline fuel cell in cogeneration of hydrogen peroxide and electricity , 2012 .

[21]  Thomas F. Edgar,et al.  Dynamic modeling, simulation, and MIMO predictive control of a tubular solid oxide fuel cell , 2012 .

[22]  Joeri F. M. Denayer,et al.  An improved tank in series model for PEMFC , 2011 .

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

[24]  George Andreadis,et al.  Two-dimensional numerical study of temperature field in an anode supported planar SOFC: Effect of the chemical reaction , 2011 .

[25]  Murat Peksen,et al.  3D coupled CFD/FEM modelling and experimental validation of a planar type air pre-heater used in SOF , 2011 .

[26]  Xin-jian Zhu,et al.  Two-dimensional dynamic simulation of a direct internal reforming solid oxide fuel cell , 2007 .

[27]  Ioannis K. Kookos,et al.  Parametric and transient analysis of non-isothermal, planar solid oxide fuel cells , 2012 .

[28]  Murat Peksen,et al.  3D transient thermomechanical behaviour of a full scale SOFC short stack , 2013 .

[29]  Ulrike Krewer,et al.  Hydrodynamic characterisation and modelling of anode flow fields of Direct Methanol Fuel Cells , 2007 .

[30]  R. Rengaswamy,et al.  A Review of Solid Oxide Fuel Cell (SOFC) Dynamic Models , 2009 .

[31]  K. Ahmed,et al.  Kinetics of internal steam reforming of methane on Ni/YSZ-based anodes for solid oxide fuel cells , 2000 .

[32]  M. Khaleel,et al.  Three-dimensional thermo-fluid electrochemical modeling of planar SOFC stacks , 2003 .

[33]  Moses O. Tadé,et al.  Improved Tank in Series Model for the Planar Solid Oxide Fuel Cell , 2011 .

[34]  M. H. Hamedi,et al.  A 2D transient numerical model combining heat/mass transport effects in a tubular solid oxide fuel cell , 2009 .