Operational Aspects for Direct Coupling of Gas Turbine and Solid Oxide Fuel Cells

Henke, Moritz; Willich, Caroline; Steilen, Mike; Schnegelberger, Christian; Kallo, Josef; Friedrich, K. Andreas

doi:10.1149/06801.0079ecst

Cited by 4 publications

(2 citation statements)

References 7 publications

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“… 114 Assuming the cell and stack footprints to be constant while keeping the simulated performance outputs, the RU thickness would need to be lowered from 2.49 to 1.53 or 1.15 mm to achieve 3 or 4 kW L –1 , respectively, at 0.8 V, whereas a reduction to 1.89 or 1.42 mm would be required for operation at 0.75 V. Markedly, a RU thickness of only 1.4 mm has been previously reported by Hagen et al based on short stacks. 20 Moreover, pressurization of the SOFC module when targeting hybrid power generation by coupling the fuel cell module with an internal combustion engine 112 or a gas turbine 113 also enables a significant increase in stack power density, as demonstrated by Henke et al, 113 which provides another perspective for realizing decreased stack and system sizes.…”

Section: Discussionmentioning

confidence: 99%

Optimizing Solid Oxide Fuel Cell Performance to Re-evaluate Its Role in the Mobility Sector

et al. 2021

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A sustainable, interconnected, and smart energy network in which hydrogen plays a major role cannot be dismissed as a utopia anymore. There are vast international and industrial ambitions to reach the envisioned system transformation, and the decarbonization of the mobility sector is a central pillar comprising a huge economic share. Solid oxide fuel cells (SOFCs) are one of the most promising technologies in the brigade of clean energy devices and have potentially wide applicability for transportation, due to their high efficiencies and impurity tolerance. To uncover future pathways to boost the cell's performance, we propose a detailed multiscale modeling methodology to evaluate the direct impact of cell materials and morphologies on commercial-scale system performance. After acquiring intrinsic electrokinetics decoupled from mass and charge transport of different anode and cathode materials via a half-cell model, a full cell model is employed to identify the most promising electrode combination. Subsequently, a scale-up to the system level is performed by coupling a 3-D kW-stack model to the balance of plant components while focusing on morphological optimization of the membrane electrode assembly (MEA). On optimally tailoring the MEA, model results demonstrate that an advanced cell design comprising a Ni fiber-CGO matrix structured anode and a LSCF-infiltrated CGO cathode could reach a stack power density of 1.85 kW L −1 and a net system efficiency of 52.2% for operation at <700 °C, with manageable stack temperature gradients of <14 K cm −1 . The modeloptimized power density is substantially higher than those of commercial stacks and surpasses industrial targets for SOFC-based range extenders. Thus, with further cell and stack development targeting the performance limiting processes elucidated in the paper, commercial SOFCs could, alongside range extenders, also act as prime movers in larger scale transport applications such as trucks, trains, and ships.

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Section: Discussionmentioning

confidence: 99%

Optimizing Solid Oxide Fuel Cell Performance to Re-evaluate Its Role in the Mobility Sector

et al. 2021

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“…Any hydrocarbon convertible into a synthesis gas can be used as fuel. Furthermore, quite high operation temperatures 750-900 °C allow these units to be implemented in hybrid SOFC-gas turbine systems [3,4]. The research and development of the SOFC power unit with catalytic partial oxidation (CPOX) reformer is challenging as there are many blocks influencing each other's thermal conditions in the system.…”

Section: Introductionmentioning

confidence: 99%

Solid oxide fuel cells power unit reformer/burner/heat-exchanger module experimental study

et al. 2018

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The article contains the installation description, experimental procedure, and results for the catalytic partial oxidation reformer/catalyst burner/heat-exchanger module. Mathematical modeling for all major blocks temperatures dependence on the reformer air supply ratio was carried out. In the air supply ratio range under study the model was verified using experimental data. The model was further practically used for the solid oxide fuel cells power unit automatic control modes development. The partial oxidation reforming solid oxide fuel cells power unit characteristics were evaluated.

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Progress in solid oxide fuel cell-gas turbine hybrid power systems: System design and analysis, transient operation, controls and optimization

2018

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Operational Aspects for Direct Coupling of Gas Turbine and Solid Oxide Fuel Cells

Cited by 4 publications

References 7 publications

Optimizing Solid Oxide Fuel Cell Performance to Re-evaluate Its Role in the Mobility Sector

Optimizing Solid Oxide Fuel Cell Performance to Re-evaluate Its Role in the Mobility Sector

Solid oxide fuel cells power unit reformer/burner/heat-exchanger module experimental study

Progress in solid oxide fuel cell-gas turbine hybrid power systems: System design and analysis, transient operation, controls and optimization

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