Two-dimensional numerical study of temperature field in an anode supported planar SOFC: Effect of the chemical reaction

Zitouni, Bariza; Andreadis, G.M.; Hocine, Ben Moussa; Abdenebi, Hafsia; Haddad, Djamel; Zeroual, M.

doi:10.1016/j.ijhydene.2010.07.141

Cited by 26 publications

(8 citation statements)

References 22 publications

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“…This could be explicated by the higher rate of reaction. Specifically, the highest temperatures for the sinusoidal and single flow were 1128.30 K and 1126.95 K respectively for the operating voltage 0.6 V. For all the geometrical configurations, the highest temperature value was always located in the center of the cell which represents the electrolyte due to the counter-flow direction as marked in the literature [47,48].…”

Section: Distribution Of Temperaturementioning

confidence: 86%

Performance analysis of AS-SOFC fuel cell combining single and sinusoidal flow field: numerical study

Horr

Mohcene

Bouguettaia

et al. 2021

Renew. Energy Environ. Sustain.

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The performance of a solid oxide fuel cell (SOFC) was examined using 3D computational fluid dynamics to model mass and heat flows inside the channels. In the present investigation, a SOFC fuel cell with a new flow field based on a sinusoidal flow has been studied. The latter was tested and compared with a single flow using ANSYS FLUENT. The obtained results showed that at a given operating voltage, the maximum power for the sinusoidal and the single flow fields were 1.43 and 1.35 W/cm2, respectively. By taking in addition, into account the concentration, activation and Ohmic losses; it was noticed that the distribution of velocity and temperature for the sinusoidal flow led to bettered results. Furthermore, it was observed that the maximum use of H2 mass fraction consumed in sinusoidal and single flow field designs were 60% and 55% respectively. Similarly, the highest H2O mass fraction values produced for the sinusoidal and single flow designs were 42% and 34% respectively. This model was validated and confronted to previous data. The present results agree well with reported studies in literature.

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Section: Distribution Of Temperaturementioning

confidence: 86%

Performance analysis of AS-SOFC fuel cell combining single and sinusoidal flow field: numerical study

Horr

Mohcene

Bouguettaia

et al. 2021

Renew. Energy Environ. Sustain.

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“…However, the radial temperature gradient inside the SOFC for such cases in the scientific literature for both SOFCs and MTSOFCs are fundamentally unmeasured and thus numerical predictions of temperature profiles, to date, may not be completely validated. Even recently, Zitouni et al [20] for a planner SOFC, presented work regarding the effect of the heat source due to the chemical reaction on the temperature distribution within an anode supported SOFC. In this study, the heat source was calculated via different expressions found in the literature.…”

Section: State Of the Artmentioning

confidence: 99%

Highlighting of Critical Experimental Data for SOFC Modeling That is Missing From the Literature and Potential of N-IR Thermography for SOFC Study

Lawlor

2012

Journal of Fuel Cell Science and Technology

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Within the following brief is the researched conclusion that there is a lack of fundamental experimental data available to the scientific community detailing the temperature profile through the cathode/electrolyte/anode assembly section of Solid Oxide Fuel Cells (SOFC). Within these electrochemical reaction driving deceives, heat may be generated and diminished by several means. For example, heat is generally considered to be generated locally; as a result of the reactor’s fundamental operation. Furthermore, heat is generally considered to be generated and/or diminished, depending on the reforming method used, when the anode executes hydrocarbon fuel reformation. Not continually developing and/or utilizing novel experimental techniques, often developed for other fields, in order to provide fundamentally elucidating experimental data regarding SOFC operation is counter-intuitive. To date, the high temperature fuel cell field has not fully adopted the potential of thermography in order to study SOFC internal operation and indeed material characterization. This may be caused by the recent rapid development of the technology, which has reduced its cost while increasing its scope. This technical brief aims to highlight missing experimental data and suggest a technology and approach that may be able to address the issue.

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“…In the continuation of our works [7][8][9][10][11][12][13][14][15][16][17][18][19], where the thermodynamic (0 D) has been employed to obtain the influence and behavior of all over-potentials (Ohmic, concentration and activation) on the produced power density by SOFCs [7]. Thermodynamic optimization studies of the solid oxide fuel cell (SOFC) to maximizing the produced power density have been presented using two different thermodynamic models (0 D) [8][9].…”

Section: Introductionmentioning

confidence: 99%

“…The water and hydrogen distributions depending on the anode thickness in SOFC heart have been obtained by a twodimensional model (2 D) based on the finite difference method in the perpendicular plane to the reactive gas flow directions, when the heat is generated by the Ohmic, activation and electrochemical losses [11]. The finite difference method in 2 D has been employed to investigate and obtain the temperature fields in the perpendicular plane to the gas flow of a planar SOFC heart at a supported anode under only the chemical reactions effect [12].…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Numerical Study of the Anode Supported Intermediate Temperature Solid Oxide Fuel Cell Overheating

Sahli¹,

Zitouni²,

Moungar³

et al. 2019

IJHT

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The purpose of the present work is to carry out an overheating study of planar solid oxide fuel cells at supported anode that operate at an intermediate temperature (AS-IT-SOFC) according to a three-dimensional and stationary numerical model. In this work, the heat is supposed produced according to four processes of heat generation (the Ohmic source that is due to the Joule effect, the source due to the species concentrations, the activation source that is caused by activation of different chemical reactions produced in the two electrodes, the electrochemical source due to the water formation in the anode). The results are obtained from a FORTRAN language program realized locally, which is based on the finite difference method in a three-dimensional environment. From the obtained results analysis, it became apparent that the developed model for the AS-IT-SOFC overheating study allowed us to understand the impact of each heat source on the temperature elevations and distributions in AS-IT-SOFC. The greatest heat production is that generated by the Ohmic source, it is about 80.6% for gas inlet temperatures of 883 K. The smallest heat production is that obtained by the source of concentration that is negligible compared to other sources. The heat produced by the electrochemical source is greater than that generated by the activation source, their heat productions are almost 17 and 2.3% for gas inlet temperatures of 883 K respectively.

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Two-dimensional numerical study of temperature field in an anode supported planar SOFC: Effect of the chemical reaction

Cited by 26 publications

References 22 publications

Performance analysis of AS-SOFC fuel cell combining single and sinusoidal flow field: numerical study

Performance analysis of AS-SOFC fuel cell combining single and sinusoidal flow field: numerical study

Highlighting of Critical Experimental Data for SOFC Modeling That is Missing From the Literature and Potential of N-IR Thermography for SOFC Study

Three-Dimensional Numerical Study of the Anode Supported Intermediate Temperature Solid Oxide Fuel Cell Overheating

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