Review on management, mechanisms and modelling of thermal processes in PEMFC

Bvumbe, Tatenda J.; Bujło, Piotr; Tolj, Ivan; Mouton, Kobus; Swart, Gerhard; Pasupathi, Sivakumar; Pollet, Bruno G.

doi:10.1515/hfc-2016-0001

Cited by 48 publications

(6 citation statements)

References 101 publications

(189 reference statements)

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“…When we want, e.g., to examine the thermal signature of the PEMFC, it is then not enough to only compute the reversible heat effect from the overall entropy change of the cell. 16 Also, the Peltier, Dufour, or their reciprocal Seebeck and Soret-coefficients are needed to compute the local heat effects. These terms have not, or only partially, been taken into account in earlier models.…”

Section: List Of Symbols σmentioning

confidence: 99%

The Impact of Peltier and Dufour Coefficients on Heat Fluxes and Temperature Profiles in the Polymer Electrolyte Fuel Cells

Sauermoser

Kjelstrup

Pollet

2020

J. Electrochem. Soc.

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We show that the coupling effects in non-equilibrium thermodynamics for heat-, mass- and charge- transport in the polymer electrolyte membrane fuel cell (PEMFC) all give significant contributions to local heat effects. The set of equations was solved by modifying an open-source 1D fuel cell algorithm. The entropy balance was used to check for model consistency. The balance was obeyed within 10% error in all PEMFC layers, except for the cathode backing. The Dufour effect/thermal diffusion and the Peltier/Seebeck coefficient are commonly neglected. Here they are included systematically. The model was used to compute heat fluxes out of the cell. A temperature difference of 5 K between the left and right boundary of the system could change the heat fluxes up to 44%. The Dufour effect, for instance, increases the temperature of both anode and cathode, up to 9 K. The possibility to accurately predict local heat effects can be important for the design of fuel cell stacks, where intermediate cooling is central. This work is based on Paper 1484 presented at the Atlanta, Georgia, Meeting of the Society, October 13–17, 2019.

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Section: List Of Symbols σmentioning

confidence: 99%

The Impact of Peltier and Dufour Coefficients on Heat Fluxes and Temperature Profiles in the Polymer Electrolyte Fuel Cells

Sauermoser

Kjelstrup

Pollet

2020

J. Electrochem. Soc.

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“…The thermal conductivities and heat generation terms of each region of the MEA are collected. Convective effects within the MEA are ignored, following similar work [44]. Heat transport in the thru-plane direction occurs by conduction, with the thermal conductivity being hydration-dependent.…”

Section: Mea Thermal Treatmentmentioning

confidence: 99%

“…Estimates of the superficial heat generation, Q i , within the regions of the MEA, are available [24,44]. Within the anode catalyst layer, heat generation occurs from irreversible heating sources.…”

Section: Mea Thermal Treatmentmentioning

confidence: 99%

Interface model of PEM fuel cell membrane steady-state behavior

Edwards

Demuren

2018

Int J Energy Environ Eng

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Modeling works which simulate the proton-exchange membrane fuel cell with the computational fluid dynamics approach involve the simultaneous solution of multiple, interconnected physics equations for fluid flows, heat transport, electrochemical reactions, and both protonic and electronic conduction. Modeling efforts vary by how they treat the physics within and adjacent to the membrane-electrode assembly (MEA). Certain approaches treat the MEA not as part of the computational domain, but rather an interface connecting the anode and cathode computational domains. These approaches may lack the ability to consistently model catalyst layer losses and MEA ohmic resistance. This work presents an upgraded interface formulation where coupled water, heat, and current transport behaviors of the MEA are modeled analytically. Improving upon the previous work, catalyst layer losses can now be modeled accurately without ad-hoc selection of model kinetic parameters. Key to the formulation is the incorporation of water absorption/desorption resistances. The interface model is developed with the consideration of only thru-plane variation, based upon varied fundamental research into each of the relevant physics. The model is validated against differential cell data with high-and low-humidity reactants. The agreement is very good in each case.

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“…In open cathode fuel cells, electrical and thermal energy is produced by the electrochemical reaction of hydrogen and oxygen contained in the air. This type of fuel cell operates optimally at temperatures typically below 60°C (for example, ( [1], [2], [3]). An additional advantage of PEM cells is their short ramp-up time to maximum zeroemission performance.…”

Section: Introductionmentioning

confidence: 99%

Optimization of air mass flow in a PEM fuel cell

et al. 2022

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In our work, we focused on measuring the performance characteristics of a test hydrogen fuel cell with an open cathode. The aim of the work was to verify the effect of the mass flow through the fuel cell on the power output as a function of the current density and voltage on the fuel cell. A test bench capable of testing fuel cells up to 2000 W was used to measure the power characteristics. The test fuel cell was composed of three cells and its total membrane area was 100 cm2. A PIV measurement system was used to measure the mass flow. The mass flow measurement was performed at the inlet of the fuel cell. The measurements included the determination of the inlet temperature distribution using a thermal imaging camera. The presented measurements were performed for two configurations with original and optimized diffuser at the inlet of the fans. Finally, the effect of mass flow and overall thermal management on the fuel cell performance is discussed, including the effect of the newly designed diffuser.

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Review on management, mechanisms and modelling of thermal processes in PEMFC

Cited by 48 publications

References 101 publications

The Impact of Peltier and Dufour Coefficients on Heat Fluxes and Temperature Profiles in the Polymer Electrolyte Fuel Cells

The Impact of Peltier and Dufour Coefficients on Heat Fluxes and Temperature Profiles in the Polymer Electrolyte Fuel Cells

Interface model of PEM fuel cell membrane steady-state behavior

Optimization of air mass flow in a PEM fuel cell

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