Three-dimensional thermo-fluid and electrochemical modeling of anode-supported planar solid oxide fuel cell

Qu, Zuopeng; Aravind, P.V.; Dekker, N.J.J.; Janssen, A.H.H.; Woudstra, N.; Verkooijen, A.H.M.

doi:10.1016/j.jpowsour.2010.02.016

Cited by 21 publications

(16 citation statements)

References 14 publications

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“…In general, the simulated results of the gas concentration changes are in agreement with the trend observed by Z.Qu et al (17,18) in our group. The modeling results also match well with the previous work from Paradis et al (13) in terms of the gas concentration changes.…”

Section: Predicted Cell Performance With Different Reforming Kineticssupporting

confidence: 92%

“…When feeding the SOFCs with carbon fuels such as methane, the influence of the kinetics of the steam reforming reaction is drawing more and more attention. Carefully controlling the steam reforming rate can draw better performance of the SOFCs, such as more even temperature gradient, higher efficiency (16,17). Modeling work can give an overall preview of the performance, and thus give suggestions to the cell design and can be also a guide for the operating condition selection.…”

Section: Introductionmentioning

confidence: 99%

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Kinetics of Internal Methane Steam Reforming in Solid Oxide Fuel Cells and Its Influence on Cell Performance– Coupling Experiments and Modeling

et al. 2013

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Mathematical modeling tools are useful for predicting the safe operation limits and efficiencies of SOFCs. For a particular SOFC design, variations in internal methane reforming kinetic parameters is expected to affect local gas compositions, local Nernst voltages, current densities and temperature profiles and in turn the safe operation limits and efficiency. However, it is observed that methane reforming kinetic data widely used in SOFC CFD models are often determined from measurements on nickel catalysts taken under experimental conditions not close enough to SOFC operation conditions causing significant inaccuracies in model calculation results. For this reason, kinetic properties of the methane steam reforming reaction in complete fuel cells with Ni-GDC (Gd 0.1 Ce 0.9 O 2 ) anodes were experimentally evaluated. SOFCs with different anodes made of different materials may perform differently due to the different reforming kinetics and the different thermal properties. IntroductionFuel cell technology appears to be a promising generation of novel power sources. One of the essential advantages for the efficient operation of solid oxide fuel cells (SOFCs) is the flexible choice of fuel. Under certain conditions, natural gas or biosyngas (including CH 4 ) can be introduced into SOFCs directly as fuel gases without any external reformers (1). This is because the SOFC anodes can catalyze the steam reforming of CH 4 (2-5). With internal steam reforming, solid oxide fuel cell (SOFC) systems have the potential to become a promising technology (6, 7). A large variation of steam reforming kinetics is provided in literature, and the experimental data are obtained under different conditions (3-5, 8, 9). Influence of different reforming kinetics combined with different thermal properties on the cell performances is still unknown.Mathematical modeling is an effective tool to facilitate predicting appropriate design of fuel cell systems. A CFD model of a biogas (obtained from biomethanation) fueled SOFC is studied by G. E. Marnellos et al (10), and an improved understanding of the involved physical, electrical, and chemical processes was given. P. Aguiar et al (11) modeling is helpful (13-17). The model used in this study was first built by Qu et al (17,18) by adopting a three-dimensional modeling approach in which heat sources are derived from the methane steam reforming reaction and the water-gas shift reaction (14-17).Relatively few studies on the internal reforming reaction in SOFCs with Ni-GDC anodes have been published (1,9,19). The internal reforming of methane on Ni/CGO and Ni/YSZ anodes was investigated by H. Timmermann et al (9) with single cells operated at steam to carbon ratios from 0 to 3 (800 ºC to 950 ºC). With the Ni-CGO anode, the reaction order for methane was 1.19 under this operation regime, and the apparent activation energy was observed to be 26.3 kJ/mol. A one-dimensional model was used to describe the gas composition along the gas channel of the Ni-CGO anode. However, most of the reported kinetic st...

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Section: Predicted Cell Performance With Different Reforming Kineticssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Kinetics of Internal Methane Steam Reforming in Solid Oxide Fuel Cells and Its Influence on Cell Performance– Coupling Experiments and Modeling

et al. 2013

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“…When the current is drawn from the stack, heat will be generated due to electrochemical reactions occurring at the TPB and ohmic heat loss deriving from resistances to the flow of ions and electrons in the electrodes, electrolyte, and interconnects. The change of the current will lead to the fluctuation of operating temperature in stack; the stack temperature fluctuation will result in thermal stress, which is destructive for stack durability [30][31][32][33]. Therefore, the current should be changed smoothly to alleviate the produce of thermal stress in stack.…”

Section: Deciding the Maximum Costing And Control Horizonsmentioning

confidence: 99%

Generalized predictive control for fractional order dynamic model of solid oxide fuel cell output power

Deng

Cao

et al. 2010

Journal of Power Sources

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“…Although early researchers often programmed their own algorithms in sourcelanguages such as FORTRAN, in recent years, the majority of fuel cell workers employ commercial computational fluid dynamics (CFD) packages (1)(2)(3)(4)(5)(6)(7)(8)(9)(10). For example; Recknagle et al (1) performed calculations of electrochemistry, heat and mass transfer in planar SOFCs with the finite-volume code STAR-CD ® .…”

Section: Introductionmentioning

confidence: 99%

“…Ho et al (7,8) applied the concept of composite electrodes to a planar SOFC using STAR-CD ® , and investigated Joule and electrochemical heating effects. A detailed analysis was performed by Qu et al (9), with Fluent ® . Another study with Fluent ® , for tubular SOFCs, was that of Kuo (10).…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Analysis of a Solid Oxide Fuel Cell Stack

Beale

Roth

et al. 2011

ECS Trans.

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A numerical simulation of the Jülich F-design Solid Oxide Fuel Cells stack is conducted by means of an original mathematical model. The model is implemented in the open source toolbox, OpenFOAM. This cell/stack level model is a key component of a programme to develop a fully integrated multi-scale fuel cell modelling capability, from nano-scale through to system level. It is intended to share the resulting software with other parties openly. Substantial experimental data is available for the Jülich F-design; Stack configuration, flow conditions, interconnector geometries and porous electrode properties prescribed in the numerical model are based on field experiments. The numerical model generates distributions of fluid flow, species concentrations, current density and temperature. The results of the simulations are compared against experimental data obtained from short stacks.

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Three-dimensional thermo-fluid and electrochemical modeling of anode-supported planar solid oxide fuel cell

Cited by 21 publications

References 14 publications

Kinetics of Internal Methane Steam Reforming in Solid Oxide Fuel Cells and Its Influence on Cell Performance– Coupling Experiments and Modeling

Kinetics of Internal Methane Steam Reforming in Solid Oxide Fuel Cells and Its Influence on Cell Performance– Coupling Experiments and Modeling

Generalized predictive control for fractional order dynamic model of solid oxide fuel cell output power

Numerical and Experimental Analysis of a Solid Oxide Fuel Cell Stack

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