Analysis of reactant gas transport in a PEM fuel cell with partially blocked fuel flow channels

Soong, Chyi–Yeou; Yan, Wei; Tseng, Chyuan-Yow; Liu, H.C.; Chen, Falin; Chu, Hsin‐Sen

doi:10.1016/j.jpowsour.2004.11.055

Cited by 92 publications

(41 citation statements)

References 14 publications

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“…(5) Catalyst ayer is considered to be an ultra-thin layer, and the fast and complete reaction of oxygen thus occurs only on the surface of the catalyst layer [15,17]. (6) The fuel cell operates at a constant temperature of 353 K. (7) The fluid field is isothermal and single phase.…”

Section: Numerical Modelingmentioning

confidence: 99%

“…where the tortuosity (s) of 1.5 was employed in previous studies [13][14][15][16][17]21] for the investigation of reactant gas transport in the mainstream flow channel of a PEMFC.…”

Section: Governing Equationsmentioning

confidence: 99%

“…The purpose of this paper is to quantify numerically how the prominent catalyst layer surface influences the cell performance enhancement by changing the catalyst layer surface geometry. According to the results of the references [15,16], the liquid water effect does not change the trend of fuel cell performance enhanced by the internal flow modification. In addition, from the references' discussion, how the temperature varies the fuel cell performance enhancement is slight using the internal flow modification.…”

Section: Introductionmentioning

confidence: 95%

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Effect of the prominent catalyst layer surface on reactant gas transport and cell performance at the cathodic side of a PEMFC

Perng

2010

Applied Energy

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Section: Numerical Modelingmentioning

confidence: 99%

“…where the tortuosity (s) of 1.5 was employed in previous studies [13][14][15][16][17]21] for the investigation of reactant gas transport in the mainstream flow channel of a PEMFC.…”

Section: Governing Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

See 1 more Smart Citation

Effect of the prominent catalyst layer surface on reactant gas transport and cell performance at the cathodic side of a PEMFC

Perng

2010

Applied Energy

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“…In the light of the discoveries of the early papers [20,21], the cell performance is commonly influenced by liquid water, and a lower operating voltage leads to a more momentous influence. The liquid water formation in the fluid flow field consequently has to be taken into consideration for the modeling of this study.…”

Section: Introductionmentioning

confidence: 99%

A three-dimensional numerical investigation of trapezoid baffles effect on non-isothermal reactant transport and cell net power in a PEMFC

Perng

2015

Applied Energy

160

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“…Soon et al [4] proposed a novel configuration of partially blocked fuel channels to enhance reactant gas transport from channels to diffusion layer regions and Maharudrayya et al [5] introduced new correlations to calculate pressure losses in the flow distributor plate for laminar flows. Nevertheless, no guidelines or project methodology that are based on precise specifications such as the electrode active area, MEA aspect ratio, channel pressure losses and Reynolds number have been provided for designers of fuel cell flow fields.…”

Section: Introductionmentioning

confidence: 99%

Computer aided fuel cell design and scale-up, comparison between model and experimental results

et al. 2006

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The present work illustrates the employment of an Automatic Scale-up Algorithm (ASA) to design a 200 cm 2 multiple serpentine (MS) flow field for a Polymer Electrolyte Fuel Cell (PEFC). With a fixed fuel cell active area and total pressure drop, the algorithm provides the flow-field design solution characterized by a specific set of parameters including channel width, rib width, channel height, covering factor, number of switchbacks, Reynolds number and pressure drop. It is known that a correlation exists between the mass flow passing through the electrode and the pressure drop, influencing the fuel cell performance. A pressure drop range from 5 to 45 kPa with steps of 5 kPa has been investigated. Numerical simulations performed on each geometry set have permitted a comparison of the flow-field total pressure drop with the analytical compressible calculation, and to evaluate the mass flow rate passing through the electrode and in the flow field channels separately. A comparison between ASA and CFD results has highlighted that the methodology is able to find a flow-field geometry that matches target geometrical and fluid dynamic requirements. A better agreement between the Automatic Scale-up Algorithm and direct CFD pressure drop calculation has been obtained taking into account the gas compressibility effects. The increase of the mass flow rate vs flow-field total pressure drop is also reported. A better understanding of the gas shorting phenomenon has been achieved by CFD post-processing, in terms of gas velocity profiles and pressure drop between adjacent channels. Since the gas shorting is a pressure driven effect, the total mass flow rate percentage passing through the porous backing has been related to the shorting velocity and geometrical parameters of the porous backing; moreover proportionality between ''shorting'' pressure drop and ratio of flow field total pressure drop and switchback number has been highlighted.

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Analysis of reactant gas transport in a PEM fuel cell with partially blocked fuel flow channels

Cited by 92 publications

References 14 publications

Effect of the prominent catalyst layer surface on reactant gas transport and cell performance at the cathodic side of a PEMFC

Effect of the prominent catalyst layer surface on reactant gas transport and cell performance at the cathodic side of a PEMFC

A three-dimensional numerical investigation of trapezoid baffles effect on non-isothermal reactant transport and cell net power in a PEMFC

Computer aided fuel cell design and scale-up, comparison between model and experimental results

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