Three-dimensional multiphase model of proton exchange membrane fuel cell with honeycomb flow field at the cathode side

Atyabi, Seyed Ali; Afshari, Ebrahim

doi:10.1016/j.jclepro.2018.12.293

Cited by 178 publications

(38 citation statements)

References 29 publications

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“…The honeycomb FF (Figure 21c) having the hexagonal pins was analysed [128] and found that the hexagonal pins increased the diffusion rate of oxygen through GDL by 10 times. The land‐pillar flow fields with different channel width (CW) of 2 and 3 mm and single/multiple inlets were optimized and it is found that the flow field with CW of 3 mm, single inlet and 76 % flow area showed higher performance due to uniform reactant distributions [129] .…”

Section: Mesh Type and Fractal Ff Designsmentioning

confidence: 99%

Performance Studies of Proton Exchange Membrane Fuel Cells with Different Flow Field Designs – Review

Marappan¹,

Palaniswamy

Velumani

et al. 2021

The Chemical Record

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Proton Exchange Membrane Fuel Cell (PEMFC) is majorly used for power generation without producing any emission. In PEMFC, the water generated in the cathode heavily affects the performance of fuel cell which needs better water management. The flow channel designs, dimensions, shape and size of the rib/channel, effective area of the flow channel and material properties are considered for better water management and performance enhancement of the PEMFC in addition to the inlet reactant's mass flow rate, flow directions, relative humidity, pressure and temperature. With the purpose of increasing the output energy of the fuel cell, many flow field designs are being developed continuously. In this paper, the performance of various conventional, modified, hybrid and new flow field designs of the PEMFC is studied in detail. Further the effects of channel tapering, channel bending, landing to channels width ratios, channel cross‐sections and insertion of baffles/blockages/pin‐fins/inserts are reviewed. The power density of the flow field designs, the physical parameters like active area, dimensions of channel/rib, number of channels; and the operating parameters like temperature and pressure are also tabulated.

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Section: Mesh Type and Fractal Ff Designsmentioning

confidence: 99%

Performance Studies of Proton Exchange Membrane Fuel Cells with Different Flow Field Designs – Review

Marappan¹,

Palaniswamy

Velumani

et al. 2021

The Chemical Record

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“…where ϕ m is membrane ionic potential and σ m is membrane proton conductivity, which can be written by Equation ( 22) [16].…”

Section: ∇• ρεmentioning

confidence: 99%

“…They found that the maximum gross power was increased by 7%, and the pressure drop was reduced by 1.6 kPa using staggered blockages. In further research, Atyabi and Afshari [16] employed the honeycomb flow channel at the PEMFC cathode side. Their results revealed the distribution of air and temperature was uniform due to the formation of parallel and serpentine paths in the cathode gas channel.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Specific Power of a PEM Fuel Cell Powered UAV with a Novel Bean-Shaped Flow Field

2021

Self Cite

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One of the marketing challenges of unmanned aerial vehicles (UAVs) for various applications is enhancing flight durability. Due to the superior characteristics of proton exchange membrane fuel cells (PEMFCs), they have the potential to reach a longer flight time and higher payload. In this regard, a numerical assessment of a UAV air-cooled PEMFC is carried out using a three-dimensional (3-D), multiphase, and non-isothermal model on three flow fields, i.e., unblocked bean-shaped, blocked bean-shaped, and parallel. Then, the results of single-cell modeling are generalized to the PEMFC stack to provide the power of 2.5 kW for a UAV. The obtained results indicate that the strategy of rising air stoichiometry for cooling performs well in the unblocked bean-shaped design, and the maximum temperature along the channel length reaches 331.5 K at the air stoichiometric of 30. Further, it is found that the best performance of a 2.5 kW PEMFC stack is attained by the bean-shaped design without blockage, of which its volume and mass power density are 1.1 kW L−1 and 0.2 kW kg−1, respectively. It is 9.4% lighter and 6.9% more compact than the parallel flow field. Therefore, the unblocked bean-shaped design can be a good option for aerial applications.

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“…Additionally, porous inserts are thought to be functioning as flow resistors which enhance reactants disperse homogeneously over the reactive surface. Atyabi SA and Afshari 35 proposed a new pin-type cathode flow field which consists of honeycomb pins in aligned or staggered array to achieve a homogenous distribution of variables like reactant concentration, velocity and pressure beside low pressure drop from inlet to outlet. As a result of the numerical assessment of new design, the honeycomb pin-type flow field was reported to perform homogenous variable distribution like multi-pass serpentine flow fields and less pressure drop like parallel flow fields.…”

Section: Local Improvements On Fundamental Flow Fieldsmentioning

confidence: 99%

Polymer electrolyte membrane fuel cell flow field designs and approaches for performance enhancement

Celik

Karagöz

2019

Proceedings of the Institution of Mechanical Engineers, Part A:

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Polymer electrolyte membrane fuel cells are carbon-free electrochemical energy conversion devices that are appropriate for use as a power source on vehicles and mobile devices emerging with their high energy density, lightweight structure, quick startup and lower operating temperature capabilities. However, they need more developments in the aspects of reactant distribution, less pressure drops, precisely balanced water content and heat management to achieve more reliable and higher overall cell performance. Flow field development is one of the most important fields of study to increase cell performance since it has decisive effects on performance parameters, including bipolar plate, and thus fuel cell weight. In this study, recent developments on conventional flow field designs to eliminate their weaknesses and innovative design approaches and flow field architectures are obtained from patent databases, and both numerical and experimental scientific studies. Fundamental designs that create differences are introduced, and their effects on the performance are discussed with regard to origin, objective, innovation strategy of design besides their strength and probable open development ways. As a result, significant enhancements and design strategies on flow field designs in polymer electrolyte membrane fuel cells are summarized systematically to guide prospective flow field development studies.

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Three-dimensional multiphase model of proton exchange membrane fuel cell with honeycomb flow field at the cathode side

Cited by 178 publications

References 29 publications

Performance Studies of Proton Exchange Membrane Fuel Cells with Different Flow Field Designs – Review

Performance Studies of Proton Exchange Membrane Fuel Cells with Different Flow Field Designs – Review

Enhancing the Specific Power of a PEM Fuel Cell Powered UAV with a Novel Bean-Shaped Flow Field

Polymer electrolyte membrane fuel cell flow field designs and approaches for performance enhancement

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