Operating Micro-Tubular SOFCs Containing Nickel Based Anodes with Blends of Methane and Hydrogen

Buchinger, G.; Kraut, Jürgen; Raab, T.; Griesser, Stefan; Lawlor, V.; Haiber, J.; Hiesgen, Renate; Sitte, Werner; Meißner, D.

doi:10.1109/iccep.2007.384253

Cited by 2 publications

(1 citation statement)

References 11 publications

(13 reference statements)

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“…Most groups publishing work in the sector usually use anode supported MT-SOFCs, where the electrolyte and cathode layers are dip coated or deposited onto a substrate [8,[21][22][23][24][25][26][27][28][29]. A few groups have published work on cathode supported MT-SOFCs [26,30].…”

Section: Introductionmentioning

confidence: 99%

Scrutiny of MT-SOFC Stack Manifolding Design Using CFD

Lawlor¹,

Hochenauer

Mariani³

et al. 2012

TOFCJ

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Abstract:In this work we investigated the use of Computational Fluid Dynamics (CFD) in order to describe the behaviour of a single Micro Tubular Solid Oxide Fuel Cell (MT-SOFC) and a bundle thereof. It is the first step before building a rather necessarily complicated experimental apparatus in order to compare the predictions with experimental measurement. The first goal of this study was to test the suitability of commercially available CFD & SOFC modelling software, with some modified features. The second goal was to predict the effects of various fuel and oxidant manifolding techniques regarding temperature, species and current density distributions. A result of this paper showed that CFD is a very useful tool, when a SOFC module is incorporated for MT-SOFC stack modelling. A second result showed that the oxidant flow regime was much more important than the fuel regime in order to manipulate a single MT-SOFC's temperature profile. The cases investigated had a radiation model included and the differences in temperature profiles, when radiation was included and neglected, especially for MT-SOFCs with view factors to the reactor housing, was shown to be important. The CFD predictions clearly showed the benefits and advantages associated with the different forms of fuel and oxidant manifoldings. A future experimental analysis is currently being designed.

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Section: Introductionmentioning

confidence: 99%

Scrutiny of MT-SOFC Stack Manifolding Design Using CFD

Lawlor¹,

Hochenauer

Mariani³

et al. 2012

TOFCJ

Self Cite

View full text Add to dashboard Cite

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CFD-Based Design of Microtubular Solid Oxide Fuel Cells

Cordiner

Mariani

Mulone

2010

Journal of Heat Transfer

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Microtubular solid oxide fuel cells (MT-SOFCs) are interesting for portable and auxiliary power units energy production systems, due to their extremely fast startup time. However, a single cell provides power in the range of 1 W, thus the number of microtubes to reach a kW scale is relevant and packaging design issues arise also. In this paper a specifically developed design procedure is presented to face with system issues and bringing into account fluid-dynamic and thermal influence on system performance. The procedure also simplifies the stack manifold design by means of a modular scale-up procedure starting from a basic optimized configuration. To this aim, a computational fluid dynamics (CFD) model has been integrated with specific models for fuel cell simulation and then validated with tailored experimental data by varying operating conditions in terms of fuel utilization and electric load. A comprehensive three–dimensional (3D) thermal-fluid-dynamic model has then been applied to the analysis of both micro-assembly (i.e., 15 tube assembly) and midi-assembly (up to 45 tubes), showing an important role of local phenomena as current homogeneity and reactant local concentration that have a strong influence on power density and temperature distribution. Microreactor power density in the range of 0.3 kW/l have been demonstrated and a specific manifold design has been realized paving the way toward a modular realization of a 1 kW MT-SOFC.

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Operating Micro-Tubular SOFCs Containing Nickel Based Anodes with Blends of Methane and Hydrogen

Cited by 2 publications

References 11 publications

Scrutiny of MT-SOFC Stack Manifolding Design Using CFD

Scrutiny of MT-SOFC Stack Manifolding Design Using CFD

CFD-Based Design of Microtubular Solid Oxide Fuel Cells

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