Simulation of the steady-state behaviour of a new design of a single planar Solid Oxide Fuel Cell

Pianko‐Oprych, Paulina; Zinko, Tomasz; Jaworski, Z.

doi:10.1515/pjct-2016-0011

Cited by 10 publications

(10 citation statements)

References 23 publications

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“…A sudden drop of power was observed at the highest current value and it can be explained by fuel starvation. Similar behaviour was observed in the previous paper (Pianko-Oprych et al, 2016), when pure hydrogen was used as a working fuel. This type of behaviour may result from the applied numerical procedure, in which the flow rates of the fuel and air for considered voltage values have to be kept constant, while during measurements the flow rate is adjusted according to the working conditions inside the fuel cell in order to avoid fuel cell destruction due to reagent starvation.…”

Section: Resultssupporting

confidence: 89%

“…The electron transport was considered in order to collect current from the fuel cell. More details on the applied model can be found in (Pianko-Oprych et al, 2016).…”

Section: Physical and Numerical Modelmentioning

confidence: 99%

“…This relationship will vary for different cell design and operating conditions when the fuel cell was designed. Therefore, the aim of this study was to apply an earlier developed three-dimensional numerical model for pure hydrogen (Pianko-Oprych et al, 2016) to a planar Solid Oxide Fuel Cell design fuelled by reformate mixtures. The idea was to check whether the model after adjustment for the presence of carbon monoxide will be able to predict thermal and electrochemical fuel cell performance.…”

Section: Introductionmentioning

confidence: 99%

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Computational Fluid Dynamics calculation of a planar solid oxide fuel cell design running on syngas

Pianko‐Oprych¹,

Zinko²,

Jaworski³

2017

Chemical and Process Engineering

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The present study deals with modelling and validation of a planar Solid Oxide Fuel Cell (SOFC) design fuelled by gas mixture of partially pre-reformed methane. A 3D model was developed using the ANSYS Fluent Computational Fluid Dynamics (CFD) tool that was supported by an additional Fuel Cell Tools module. The governing equations for momentum, heat, gas species, ion and electron transport were implemented and coupled to kinetics describing the electrochemical and reforming reactions. In the model, the Water Gas Shift reaction in a porous anode layer was included. Electrochemical oxidation of hydrogen and carbon monoxide fuels were both considered. The developed model enabled to predict the distributions of temperature, current density and gas flow in the fuel cell.

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Section: Resultssupporting

confidence: 89%

“…The electron transport was considered in order to collect current from the fuel cell. More details on the applied model can be found in (Pianko-Oprych et al, 2016).…”

Section: Physical and Numerical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Computational Fluid Dynamics calculation of a planar solid oxide fuel cell design running on syngas

Pianko‐Oprych¹,

Zinko²,

Jaworski³

2017

Chemical and Process Engineering

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“…Therefore, the objective of the present work was to study thermal stresses in the planar SOFC components using the finite element method (FEM) in order to better understand the details of internal processes occurring within the SOFC design proposed by Bossel [ 7 ] and for a superior design of a new fuel cell. In a previous work [ 8 ], a comprehensive thermodynamic electrochemical modeling using computational fluid dynamics (CFD) was established and the effect of gas flow on temperature as well as on current density had been investigated under a steady-state mode. The novelty of this paper is its focus on the effects of a temperature profile and the coefficients of thermal expansion (CTEs) mismatch between components on the thermal stresses.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Investigation of the Thermal Stresses of a Planar Solid Oxide Fuel Cell

2016

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A typical operating temperature of a solid oxide fuel cell (SOFC) is quite high above 750 °C and affects the thermomechanical behavior of the cell. Thermal stresses may cause microstructural instability and sub-critical cracking. Therefore, a joint analysis by the computational fluid dynamics (CFD) and computational structural mechanics based on the finite element method (FEM) was carried out to analyze thermal stresses in a planar SOFC and to predict potential failure locations in the cell. A full numerical model was based on the coupling of thermo-fluid model with the thermo-mechanical model. Based on a temperature distribution from the thermo-fluid model, stress distribution including the von Mises stress, shear stress as well as the operating principal stress were derived in the thermo-mechanical model. The FEM calculations were performed under different working conditions of the planar SOFC. The highest total stress was noticed at the lower operating voltage of 0.3 V, while the lowest total stress was determined at the voltage of 0.7 V. The obtained stress distributions allowed a better understanding of details of internal processes occurring within the SOFC and provided helpful guidance in the optimization of a new SOFC design.

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“…A full numerical model used in this study, based on the coupled equations for thermal, fluid, electrochemistry and electrical transport, was presented in details in a paper [11].…”

Section: Multi-physics Electrochemistry Modelmentioning

confidence: 99%

Three-Dimensional Modelling of Thermal Stresses in a Planar Solid Oxide Fuel Cell of a Novel Design

Zinko

Pianko‐Oprych

Jaworski

2016

IAPGOS

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The presented modelling investigation was carried out to analyze thermal stresses and expansion in an anode supported planar Solid Oxide Fuel Cell (pSOFC). The temperature distribution was based on previously developed thermo-electrochemical model predicting fuel cell operation. The design of a single pSOFC consisted of three ceramic layers of membrane electrode assembly: anode, electrolyte, cathode and two cross-flow bipolar plates with 26 ribs. The gases flowed diagonally from one cell corner to the opposite one. The fuel and air flows were crosswise opposed on each bipolar plate side. The study allowed to indicate the most vulnerable to thermal damage area of the fuel cell in the operating conditions. The results will be useful in further design modification and performance optimization of the SOFC.

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Simulation of the steady-state behaviour of a new design of a single planar Solid Oxide Fuel Cell

Cited by 10 publications

References 23 publications

Computational Fluid Dynamics calculation of a planar solid oxide fuel cell design running on syngas

Computational Fluid Dynamics calculation of a planar solid oxide fuel cell design running on syngas

A Numerical Investigation of the Thermal Stresses of a Planar Solid Oxide Fuel Cell

Three-Dimensional Modelling of Thermal Stresses in a Planar Solid Oxide Fuel Cell of a Novel Design

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