Three-dimensional model of a 50 cm2 high temperature PEM fuel cell. Study of the flow channel geometry influence

Lobato, Justo; Cañizares, Pablo; Rodrigo, Manuel A.; Pinar, F. Javier; Mena, Esperanza; Úbeda, Diego

doi:10.1016/j.ijhydene.2010.02.089

Cited by 129 publications

(54 citation statements)

References 30 publications

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“…When the stoichiometry of air increases from 1.5 to 2.0, the maximum power density still has a significant increase. Laboto et al [18] reported a similar conclusion based on their simulation of high-temperature PEM fuel cells with a serpentine flow field [28]. They found that cell output voltage increased more significantly with the increase of the stoichiometric factor of cathode airflow than that of hydrogen flow.…”

Section: Validation To the Mathematical Modelmentioning

confidence: 70%

“…Efforts on this issue include some works that originated from Bejan's constructal theory [31][32][33][34][35][36], as well as studies such as those by Taccani et al [37], which reported that a serpentine flow field yields higher performance compared to a parallel flow field in their experimental tests. Through numerical analysis, Lobato et al [28] also found that serpentine flow channels performed better than the flow field with pin arrays. Therefore, serpentine flow field was chosen in the present study for high-temperature PEM fuel cells.…”

Section: Introductionmentioning

confidence: 99%

“…Their model was used for a parametric study, and they concluded that the greatest potential for improving PBI PEM fuel cell performance was to increase the conductivity of membrane and also the performance of the catalyst [27]. Lobato et al [28] implemented a threedimensional half-cell model into a computational fluid dynamics (CFD) software. Their simulated cell has a hightemperature polyelectrolyte membrane (HT-PEMFC) in an area of 50 cm 2 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of geometry/dimensions of gas flow channels and operating conditions on high-temperature PEM fuel cells

Liu

Hartz

et al. 2014

Int J Energy Environ Eng

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In order to accomplish the objective of studying and optimizing the flow channel geometries and dimensions for high-temperature proton-exchange-membrane (PEM) fuel cells (with operating temperatures above 120°C), a mathematical model has been developed in this work. As the major step of the modeling, the average concentrations of gas species in bulk flows as well as in the layers of electrodes are calculated through mass transfer analysis in one-dimensional direction normal to the membrane-electrodes layers. Therefore, the concentration and activation polarizations are simulated with much less computational work compared to a three-dimensional numerical model. The ohmic loss is taken into consideration through analysis of a representative network circuit simulating the electron and proton conduction in the elements of electrodes and electrolyte, respectively. The simulated results for high-temperature PEM fuel cells were compared with experimental results from literature. The results from the simulation and experimental tests showed good agreement, which validated the mathematical model. As the model requires less computational work, it was used to analyze a large number of cases with different gas flow channel dimensions and operating conditions, and optimization to the dimensions of channels and ribs was accomplished.

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Section: Validation To the Mathematical Modelmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of geometry/dimensions of gas flow channels and operating conditions on high-temperature PEM fuel cells

Liu

Hartz

et al. 2014

Int J Energy Environ Eng

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“…The anode and cathode exchange current densities (i 0,a and i 0,c ) depend on temperature according to an Arrheniuslike law expressed in Eq. (26) [26].…”

Section: Modelling the Catalytic Layermentioning

confidence: 99%

Application of CFD Techniques in the Modelling and Simulation of PBI PEMFC

Doubek¹,

Robalinho²,

Cunha³

et al. 2011

Fuel Cells

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In the present work two 3‐D models, for the catalytic layer, were employed in order to simulate the responses of a PBI high temperature polymeric membrane fuel cell. The simulations made use of an agglomerate model and a pseudo‐homogenous model, both implemented taking into account the temperature influence over their parameters. The overall simulation was performed also as two models, linked by the variable pressure, one for the whole graphite plate simulating the distribution channels, and the other dealing with the MEA and thereof the catalytic layer. A discussion over the two models was done and the experimental results demonstrated that the pseudo‐homogeneous obtained the better fits.

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“…2. Lobato et al [26,27] investigated these flow fields and concluded that the pin-type channel can be used when working at the high temperature without expecting lower performance. Pressure drop caused by pintype flow channel will also be the lowest of the four geometries tested.…”

Section: Introductionmentioning

confidence: 99%

A new process of forming metallic bipolar plates for PEM fuel cell with pin-type pattern

Belali-Owsia

Bakhshi-Jooybari

Hosseinipour

et al. 2014

Int J Adv Manuf Technol

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Bipolar plates are the most important and expensive components of a fuel cell. These plates can be fabricated by different processes, such as machining graphite plates, producing composite materials, and forming metallic sheets. Due to some benefits of the metallic plates, especially with stainless steel sheets, they have recently been more noticeable. There are various flow field patterns with different applications in these plates, being classified into simple and complex ones in forming process for spiral or parallel and multiarray pin-type examples, respectively. In this study, hydroforming, stamping, and hybrid hydroformingstamping methods have been used to investigate the forming capability of multi-array pin-type pattern, and, consequently, to compare the results of filling percentage and thickness distribution of these methods. According to the results, samples formed by the hybrid method have shown desirable filling percentage and thickness distribution. The effect of preload pressure of this method on thickness distribution has subsequently been studied and it was observed that the thickness distribution of the formed sample was enhanced by maximizing the pressure of the hydroforming stage.

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Three-dimensional model of a 50 cm2 high temperature PEM fuel cell. Study of the flow channel geometry influence

Cited by 129 publications

References 30 publications

Effects of geometry/dimensions of gas flow channels and operating conditions on high-temperature PEM fuel cells

Effects of geometry/dimensions of gas flow channels and operating conditions on high-temperature PEM fuel cells

Application of CFD Techniques in the Modelling and Simulation of PBI PEMFC

A new process of forming metallic bipolar plates for PEM fuel cell with pin-type pattern

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