A comprehensive analysis of secondary flow effects on the performance of PEMFCs with modified serpentine flow fields

Chen, Min; He, Jianping; Wang, Kun; Xie, Liyao; Yang, Xuguang

doi:10.1016/j.enconman.2018.11.059

Cited by 48 publications

(13 citation statements)

References 32 publications

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“…Nine different Modified Serpentine Flow Fields (MSFF or FF : 8) were analysed based on number segments and channels [75] . The MSFF‐1‐7 and MSFF‐3‐7 (Figure 12a–12b) gave a better performance than PFF.…”

Section: Effects Of Different Flow Field 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: Effects Of Different Flow Field 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

View full text Add to dashboard Cite

show abstract

“…The reactant gas is ideal, and the flow is laminar. 21 3. No interpenetration of hydrogen and oxygen in the electrolyte membrane.…”

Section: Model Assumptionsmentioning

confidence: 99%

“…No interpenetration of hydrogen and oxygen in the electrolyte membrane. 21 4. The materials in membrane assembly electrode (MEA), including proton exchange membrane, catalytic layer, and diffusion layer, are all isotropic.…”

Section: Model Assumptionsmentioning

confidence: 99%

Performance improvement in a proton exchange membrane fuel cell with an innovative flow field design

Huang

Xing

2021

Intl J of Energy Research

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The flow field of the proton exchange membrane fuel cell (PEMFC) controls mass and water transfer; it significantly impacts the fuel cell's performance. It is critical to innovate the flow field design for optimizing the performance. This paper proposes a new-designed flow field (NDFF) patterned with the built-in blockage and trap-shape rib association. The novel design was analyzed numerically and experimentally. A three-dimensional isothermal numerical model was first established based on COMSOL software. This model demonstrated that the NDFF transformed the traditional diffusion mass transfer into the optimized diffusion and convection mass transfer combination.Compared with the conventional straight flow field, the effective mass transfer coefficient was considerably improved. Moreover, the new-designed structures enforced cyclical variation of local velocity and pressure, forming forced-convection, which was beneficial for water management. At 0.45AÁcm À2 , the steady-state voltage and the initial dynamic response voltage were increased by 0.08 V and 0.16 V; power density was increased by 20.1%. The experimental results were collected to validate the enhanced performance of PEMFC with the NDFF. Energy efficiency ratio (EER) was proposed as an evaluation criterion; EER results suggested NDFF can improve the net output power. Highlights• A new flow field patterned with built-in blockage and trap shape rib association• Energy efficiency ratio, effective mass transfer coefficient used for evaluation • Steady-state and dynamic performances are greatly improved at an increased Energy efficiency ratioenergy efficiency ratio, flow field, oxygen and water distribution, proton exchange membrane fuel cell | INTRODUCTIONClimate change caused by environmental pollution and global warming is getting great attention; PEMFCs demonstrated outstanding potential for their advantage of zero-pollution. 1-3 Significant progress has been achieved in developing PEMFC's technologies; however, the cost is still one main obstacle that restricts the large-scale commercialization. 4 The cost can be reduced by improving PEMFC's performance. 5 Flow field significantly affects a fuel cell's performance, whose difference among PEMFCs with

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“…In the PEMFC, the voltage loss mainly occurs in activation polarization, ohmic polarization and concentration polarization [26,27]. Figure 6 presents the polarization and power density curves of Radial-Ⅰ, Radial-Ⅱ, Radial-Ⅲ, parallel, single serpentine and 5-serpentine flow fields.…”

Section: Polarization Curvesmentioning

confidence: 99%

Radial Flow Field of Circular Bipolar Plate for Proton Exchange Membrane Fuel Cells

Zhu¹,

Zheng²

2019

IJHT

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The channel structure of flow field is an important influencing factor of the operation and performance of proton exchange membrane fuel cell (PEMFC). Based on circular bipolar plate, three radial flow fields, namely, Radial-I, Radial-II and Radial-III, with different structures were created, and compared to disclose the effects of radial channel on the flow field for the PEMFC. The results show that radial flow fields clearly outperformed traditional flow fields like parallel, single serpentine and multiple serpentine flow fields. Radial-II has the highest current density and power density than any other flow field. The channel and rib widths of radial flow field have greater impacts on PEMFC performance than channel depth. Radial flow field can effectively improve the water discharge and reduce the pressure drop of the PEMFC. The research findings shed new light on the performance improvement of the PEMFC.

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A comprehensive analysis of secondary flow effects on the performance of PEMFCs with modified serpentine flow fields

Cited by 48 publications

References 32 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

Performance improvement in a proton exchange membrane fuel cell with an innovative flow field design

Radial Flow Field of Circular Bipolar Plate for Proton Exchange Membrane Fuel Cells

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