Exergy analysis of the diesel pre-reforming solid oxide fuel cell system with anode off-gas recycling in the SchIBZ project. Part I: Modeling and validation

Huerta, Gerardo Valadez; Jordán, Johanan Álvarez; Dragon, Michael; Leites, Keno; Kabelac, Stephan

doi:10.1016/j.ijhydene.2018.04.216

Cited by 33 publications

(12 citation statements)

References 36 publications

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“…Some of the main advantages of SOFCs are the high tolerance to CO and their flexibility with the purity of the H 2 needed, in comparison to PEMFCs [4,5]. SOFC systems with pre-or internal reforming can work with common fuels in the actual infrastructure and also work in a future hydrogen network [6][7][8]. Depending on the electrolyte material and thickness, SOFCs are operated at a temperature between 700 • C and 1100 • C [9,10].…”

Section: Introductionmentioning

confidence: 99%

Impact of Multi-Causal Transport Mechanisms in an Electrolyte Supported Planar SOFC with (ZrO2)x−1(Y2O3)x Electrolyte

Huerta¹,

Flasbart²,

Marquardt³

et al. 2018

Entropy

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The calculation of the entropy production rate within an operational high temperature solid oxide fuel cell (SOFC) is necessary to design and improve heating and cooling strategies. However, due to a lack of information, most of the studies are limited to empirical relations, which are not in line with the more general approach given by non-equilibrium thermodynamics (NET). The SOFC 1D-model presented in this study is based on non-equilibrium thermodynamics and we parameterize it with experimental data and data from molecular dynamics (MD). The validation of the model shows that it can effectively describe the behavior of a SOFC at 1300 K. Moreover, we show that the highest entropy production is present in the electrolyte and the catalyst layers, and that the Peltier heat transfer is considerable for the calculation of the heat flux in the electrolyte and cannot be neglected. To our knowledge, this is the first validated model of a SOFC based on non-equilibrium thermodynamics and this study can be extended to analyze SOFCs with other solid oxide electrolytes, with perovskites electrolytes or even other electrochemical systems like solid oxide electrolysis cells (SOECs).

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Section: Introductionmentioning

confidence: 99%

Impact of Multi-Causal Transport Mechanisms in an Electrolyte Supported Planar SOFC with (ZrO2)x−1(Y2O3)x Electrolyte

Huerta¹,

Flasbart²,

Marquardt³

et al. 2018

Entropy

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“…Solid oxide fuel cell (SOFC) systems present a promising alternative for electrical energy supply on sea-going vessels due to their fuel flexibility, covering all of the above-mentioned energy carriers [4] at high conversion efficiencies exceeding 60% LHV, as experimentally demonstrated for methane [5]. The deployment of SOFC systems on ships is currently the subject of several research projects, using natural gas [6,7], diesel [8,9], or ammonia as a fuel [10]. Apart from establishing higher power densities and system lifetimes, dynamic and robust system operation is the subject of both the current research and this publication.…”

Section: Introductionmentioning

confidence: 99%

Steady-State and Transient Operation of Solid Oxide Fuel Cell Systems with Anode Off-Gas Recirculation within a Highly Constrained Operating Range

Hollmann,

Kabelac

2023

Energies

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Based on a prototype presented in a prior publication, this research investigates the operational characteristics of a methane-fueled solid oxide fuel cell (SOFC) system with anode off-gas recirculation (AOGR) for electrical energy supply on sea-going vessels. The proposed first-principle system model utilizes a spatially segmented SOFC stack and lumped balance of plant components validated on the component level to accurately depict the steady-state and transient operating behavior. Five operational limitations are chosen to highlight permissible operating conditions with regard to stack and pre-reformer degradation. Steady-state operating maps are presented, emphasizing efficient operating conditions at maximum stack fuel utilization and minimal permissible oxygen-to-carbon ratio. Exemplary transient load changes illustrate increasing system control complexity caused by gas flow delays due to the spatially distributed plant layout. Actuation strategies are presented and underline the need for a top-level model predictive system controller to assure a dynamic and efficient operation within the defined constraints.

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“…Many researchers consider fuel cells a promising solution for low-emission power generation on ships [23][24][25][26][27]. Fuel cells convert chemical energy directly into electrical energy, which makes it possible to reach high efficiencies.…”

Section: Introductionmentioning

confidence: 99%

Solid Oxide Fuel Cells for Marine Applications

Veldhuizen

Biert

Aravind

et al. 2023

International Journal of Energy Research

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The marine industry must reduce emissions to comply with recent and future regulations. Solid oxide fuel cells (SOFCs) are seen as a promising option for efficient power generation on ships with reduced emissions. However, it is unclear how the devices can be integrated and how this affects the operation of the ship economically and environmentally. This paper reviews studies that consider SOFC for marine applications. First, this article discusses noteworthy developments in SOFC systems, including power plant options and fuel possibilities. Next, it presents the design drivers for a marine power plant and explores how an SOFC system performs. Hereafter, the possibilities for integrating the SOFC system with the ship are examined, also considering economic and environmental impact. The review shows unexplored potential to successfully integrate SOFC with thermal and electrical systems in marine vessels. Additionally, it is identified that there are still possibilities to improve marine SOFC systems, for which a holistic approach is needed for design at cell, stack, module, and system level. Nevertheless, it is expected that hybridisation is needed for a technically and economically feasible ship. Despite its high cost, SOFC systems could significantly reduce GHG, NOX, SOX, PM, and noise emissions in shipping.

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Exergy analysis of the diesel pre-reforming solid oxide fuel cell system with anode off-gas recycling in the SchIBZ project. Part I: Modeling and validation

Cited by 33 publications

References 36 publications

Impact of Multi-Causal Transport Mechanisms in an Electrolyte Supported Planar SOFC with (ZrO2)x−1(Y2O3)x Electrolyte

Impact of Multi-Causal Transport Mechanisms in an Electrolyte Supported Planar SOFC with (ZrO2)x−1(Y2O3)x Electrolyte

Steady-State and Transient Operation of Solid Oxide Fuel Cell Systems with Anode Off-Gas Recirculation within a Highly Constrained Operating Range

Solid Oxide Fuel Cells for Marine Applications

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