Simulation of the chemical/electrochemical reactions and heat/mass transfer for a tubular SOFC in a stack

Li, Pei Wen; Chyu, Minking K.

doi:10.1016/j.jpowsour.2003.06.001

Cited by 168 publications

(74 citation statements)

References 13 publications

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“…However, micro processes or phenomena occurring within the ensemble of positive electrode-electrolytenegative electrode (PEN) are grossly simplified. Two-dimensional (2D) models are popular with tubular solid oxide fuel cells because of their axial symmetry (Janardhanan and Deutschmann, 2006;Klein et al, 2007;Li and Chyu, 2003;Suwanwarangkul et al, 2006). Others have used quasi-2D models planar designs (Janardhanan and Deutschmann, 2007;Zhu et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of solid oxide fuel cells

Kosinski

Hoffmann

et al. 2008

Chemical Engineering Science

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This paper presents a numerical model for a planar solid oxide fuel cell (SOFC) with mixed ionic-electronic conducting electrodes. Transport of positive or negative charges, which takes place in the direction of down-or up-gradient electric potential, respectively, within the composite electrodes and through the electrolyte membrane, is mimicked by making use of an algorithm for Fickian diffusion in the commercial software. The output cell voltage, which is the potential difference between the two current collectors, is fixed at a given value. The coupled equations describing the conservation of mass, momentum and energy and the chemical and electrochemical processes are solved using the commercial package Star-CD, augmented with subroutines developed in-house. Results for the concentration of chemical species and the distributions of temperature and current density in an anode-supported SOFC with direct internal reforming are presented and discussed. The potential for using this model as a general numerical tool to study the impact of the detailed processes taking place in solid oxide fuel cells is discussed.

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Section: Introductionmentioning

confidence: 99%

Numerical modeling of solid oxide fuel cells

Kosinski

Hoffmann

et al. 2008

Chemical Engineering Science

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“…A SOFC model has been developed by various researchers in (Li & Chyu, 2003), (Ali Volkan Akkaya & Erdem, 2009), (N. Lu, 2006, (David L. Damm, 2005), (Mitsunori Iwata, 2000), (Tomoyuki Ota, 2003), (Xiongwen Zhang, 2007), (Takanobu Shimada, 2009), (S. Campanari, 2004 and (A.C. Burt, 2004) taking its thermodynamic effect into consideration which concentrated on the effects of temperature changes on the output voltage response. Heat balance is considered in specific model configuration more than in general and the detail calculation seems to be complex.…”

Section: Different Modelling Approachesmentioning

confidence: 99%

Modelling a SOFC Power Unit Using Natural Gas Fed Directly

Tuyen¹,

Fujita²

2012

Advances in Natural Gas Technology

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“…The cell design and materials are well known and are reported in [8]. The cells are packed together in a 4 bundles arrangement, each one consisting of 22 tubular cells.…”

Section: Balance-of-plant Of the Sofc Systemmentioning

confidence: 99%

“…A simple combustion model for the afterburner is used for the stack exhaust burning. ... [9] ... [6] ... [4] ... [7] ... [8] ... [5] …”

Section: System Modelmentioning

confidence: 99%

Residential Solid Oxide Fuel Cell Generator Fuelled by Ethanol: Cell, Stack and System Modelling with a Preliminary Experiment

Lanzini¹,

Santarelli²,

Orsello³

2010

Fuel Cells

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The flexibility and feasibility of a 5 kW SOFC generator designed for natural gas (NG) and fuelled by a non‐conventional liquid fuel such as ethanol is analysed. A complete generator model is implemented to predict and determine the main criticalities when ethanol fuel is adoperated. The main balance‐of‐plant (BoP) units considered are the reformer, the recirculation system based on an ejector, the tubular cells bundles constituting the stack unit, the after‐burner zone and the air blower. The electrical and global efficiencies achieved at nominal operating conditions show how ethanol maintains generator performance good, while only slightly reducing the system AC efficiency from 48% (achieved by NG) to 45%. The effectiveness and flexibility of the recirculation system when changing the fuel is also verified since a safe steam‐to‐carbon ratio (STCR) is established after the fuel is switched from NG ethanol. The stack thermal management is analysed in detail and related to the system performances, showing how a high endothermic fuel reforming reaction is required to maintain the overall system efficiency. A preliminary experiment with ethanol feeding the Siemens generator is finally presented. The system response to the new fuel is monitored by several measured parameters and the system regulation is explained.

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Simulation of the chemical/electrochemical reactions and heat/mass transfer for a tubular SOFC in a stack

Cited by 168 publications

References 13 publications

Numerical modeling of solid oxide fuel cells

Numerical modeling of solid oxide fuel cells

Modelling a SOFC Power Unit Using Natural Gas Fed Directly

Residential Solid Oxide Fuel Cell Generator Fuelled by Ethanol: Cell, Stack and System Modelling with a Preliminary Experiment

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