Three-dimensional computational fluid dynamics modeling of anode-supported planar SOFC

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

doi:10.1016/j.ijhydene.2010.11.018

Cited by 91 publications

(34 citation statements)

References 18 publications

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“…This is furthermore substantiated by our current results, the previous results in Ref. [39], and indeed the works of others using similar software and fitting procedure [31,32,[48][49][50].…”

Section: Calculationsupporting

confidence: 91%

Experimental and Numerical Study of Various MT-SOFC Flow Manifold Techniques: Single MT-SOFC Analysis

Lawlor

Klein²,

Hochenauer³

et al. 2013

Journal of Fuel Cell Science and Technology

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Standard anode supported micro tubular-solid oxide fuel cell (MT-SOFC) stacks may provide the oxidant, in relation to the fuel, in three different manifold regimes. Firstly, "co-flow" involves oxidant outside the MT-SOFC flowing co-linearly in relation to the fuel inside. Secondly, "counter flow" involves oxidant outside the MT-SOFC flowing counter-linearly in relation to the fuel inside the MT-SOFC. Finally, "cross-flow" involves the oxidant outside the MT-SOFC flowing perpendicular to the fuel flow inside the MT-SOFC. In order to examine the effect of manifold technique on MT-SOFC performance, a combination of numerical simulation and experimental measurements was performed. Furthermore, the cathode current tap location, in relation to the fuel flow, was also studied. It was found that the oxidant manifold and the location of the cathode current collection point on the MT-SOFC tested and modeled had negligible effect on the MT-SOFC's electrical and thermal performance. In this study, a single MT-SOFC was studied in order to establish the measurement technique and numerical simulation implementation as a prerequisite before further test involving a 7 cell MT-SOFC stack.

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Section: Calculationsupporting

confidence: 91%

Experimental and Numerical Study of Various MT-SOFC Flow Manifold Techniques: Single MT-SOFC Analysis

Lawlor

Klein²,

Hochenauer³

et al. 2013

Journal of Fuel Cell Science and Technology

View full text Add to dashboard Cite

show abstract

“…The objective of obtaining high efficient and clean energy systems to be commercially competitive will be reached when reliability, costs and lifetime are comparable with the "traditional" energy systems [3,4]. In SOFC developments, the CFD numerical techniques can be effectively used to find the solution of many design problems that affect the commercial application of this kind of technology.…”

Section: Introductionmentioning

confidence: 99%

Solid oxide fuel cell numerical study: modified MOLB-type and simple planar geometries with internal reforming

Ramírez-Minguela

Rodríguez-Muñoz

Pérez-García

et al. 2015

Electrochimica Acta

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Section: Introductionmentioning

confidence: 99%

“…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%

“…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).…”

mentioning

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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Three-dimensional computational fluid dynamics modeling of anode-supported planar SOFC

Cited by 91 publications

References 18 publications

Experimental and Numerical Study of Various MT-SOFC Flow Manifold Techniques: Single MT-SOFC Analysis

Experimental and Numerical Study of Various MT-SOFC Flow Manifold Techniques: Single MT-SOFC Analysis

Solid oxide fuel cell numerical study: modified MOLB-type and simple planar geometries with internal reforming

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

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