Experiment and simulation investigations for effects of flow channel patterns on the PEMFC performance

Ferng, Yuh-Ming; Su, Ay; Lu, Shao‐Ming

doi:10.1002/er.1320

Cited by 53 publications

(23 citation statements)

References 34 publications

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“…Studies concerning to thermal-hydraulic characteristics and effects over the behavior in PEMFCs have been carried out [4,5]. Additionally, some experimental measurements and analytical studies related to the GDL structures and performance have been realized [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Compress effects on porosity, gas-phase tortuosity, and gas permeability in a simulated PEM gas diffusion layer

Espinoza‐Andaluz

Andersson

Yuan

et al. 2015

Int. J. Energy Res.

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Summary Among the parameters to take into account in the design of a proton exchange membrane fuel cell (PEMFC), the energy conversion efficiency and material cost are very important. Understanding in deep the behavior and properties of functional layers at the microscale is helpful for improving the performance of the system and find alternative materials. The functional layers of the PEMFC, i.e., the gas diffusion layer (GDL) and catalyst layer, are typically porous materials. This characteristic allows the transport of fluids and charges, which is needed for the energy conversion process. Specifically, in the GDL, structural parameters such as porosity, tortuosity, and permeability should be optimized and predicted under certain conditions. These parameters have effects on the performance of PEMFCs, and they can be modified when the assembly compression is effected. In this paper, the porosity, gas‐phase tortuosity, and through‐plane permeability are calculated. These variables change when the digitally created GDL is under compression conditions. The compression effects on the variables are studied until the thickness is 66% of the initial value. Because of the feasibility to handle problems in the porous media, the fluid flow behavior is evaluated using the lattice Boltzmann method. Our results show that when the GDL is compressed, the porosity and through‐plane permeability decrease, while the gas‐phase tortuosity increases, i.e., increase the gas‐phase transport resistance. Copyright © 2015 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Compress effects on porosity, gas-phase tortuosity, and gas permeability in a simulated PEM gas diffusion layer

Espinoza‐Andaluz

Andersson

Yuan

et al. 2015

Int. J. Energy Res.

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“…Changing the pattern of the flow channels of a PEM fuel cell was studied by Ferng et al . . They conducted experimental investigation as well as a computational fluid dynamic simulation of a three‐dimensional model.…”

Section: Introductionmentioning

confidence: 99%

Effects of stack orientation and vibration on the performance of PEM fuel cell

El-Emam

Mousa

Awad

2014

Int. J. Energy Res.

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SUMMARY An experimental study is carried out to investigate effects of stack orientation and vibration on the performance of Proton Exchange Membrane (PEM) fuel cell. A 25‐cm2 single cell with serpentine anode and straight cathode flow channels is used. The hydrogen flow rate, cathode air temperature, and relative humidity are kept constant at 60 smL/min, 20 °C and 80%, respectively, whereas the cathode air flow rate values are 220, 440, and 660 smL/min as well as free breathing case. An orientation and vibration mechanisms are designed to facilitate different values orientation positions and vibration amplitude and frequency of the stack. The results show that stack orientation and vibration have significant effects on the performance of PEM fuel cell. Based on the results obtained from this study, it can be concluded that optimum positions of cell orientation are 30° and 90° at low and high values of cathode air flow rate, respectively. Also, an improvement in the performance of the fuel cell is achieved when the stack is vibrated with low values of amplitude and frequency. Each of cell maximum power density and maximum hydrogen utilization decreases with increasing each of amplitude and frequency of stack vibration. Copyright © 2014 John Wiley & Sons, Ltd.

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“…Boddu et al developed various modified flow channel configurations and found that serpentine square bends showed higher pressure drops compared with curvilinear bends. Ferng et al studied the influence of different channel patterns on the fuel cell performance and found that different depth patterns played an important role in the fuel cell performance with parallel channels. Imbrioscia et al studied the gas flow behaviors considering the width, depth, and shape of the flow channel based on a 3D fuel cell model and revealed that a suitable position of obstruction nearby the gas inlet would improve the flow management.…”

Section: Introductionmentioning

confidence: 99%

Influence of sloping baffle plates on the mass transport and performance of PEMFC

et al. 2018

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Summary Sloping baffle plates are installed numerically in the flow channel of proton exchange membrane fuel cell (PEMFC) to promote the mass transport in the porous electrode and the fuel cell performance. The sloping angle of baffle plate on the mass transport and performance of PEMFC are investigated and optimized. The numerical results show that the sloping angle of baffle plate influences the velocity distribution, flow resistance in the flow channel, and the intensity of mass transport between the channel and porous electrode. Larger sloping angle increases the velocity in the vertical direction which brings stronger squeeze effect between the channel and porous electrode, but it also reduces the squeeze area and increases the flow resistance. An optimization for the sloping angle of baffle plate is carried out. The baffle plate with the sloping angle of 45° shows the best performance in PEMFC net power considering the pumping power caused by the pressure loss. The effect of the baffle plate number is also investigated and optimized. The fuel cell current density increases with the baffle plate number, but the increment rate is decreased. The pumping power increases almost linearly with the baffle plate number. The PEMFC with six sloping baffle plates installed in the channel is found to be optimal in terms of the net power.

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Experiment and simulation investigations for effects of flow channel patterns on the PEMFC performance

Cited by 53 publications

References 34 publications

Compress effects on porosity, gas-phase tortuosity, and gas permeability in a simulated PEM gas diffusion layer

Compress effects on porosity, gas-phase tortuosity, and gas permeability in a simulated PEM gas diffusion layer

Effects of stack orientation and vibration on the performance of PEM fuel cell

Influence of sloping baffle plates on the mass transport and performance of PEMFC

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