Numerical investigation of the coupled water and thermal management in PEM fuel cell

Cao, Tao-Feng; Lin, Hai; Chen, Li; He, Ya-Ling; Tao, Wen‐Quan

doi:10.1016/j.apenergy.2013.02.031

Cited by 189 publications

(52 citation statements)

References 52 publications

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“…Low temperature PEM fuel cells have been studied by many researchers during the past using various modeling and experimental approaches [4][5][6][7][8][9][10][11][12][13]; while high-temperature PEM fuel cells only have been studied in recent times due to the tough barrier of membrane development. One of the most outstanding characteristics of high-temperature PEM fuel cells is their tolerance for higher level of carbon monoxide than that of low-temperature PEM fuel cells [14].…”

Section: Introductionmentioning

confidence: 99%

Effects of geometry/dimensions of gas flow channels and operating conditions on high-temperature PEM fuel cells

Liu

Hartz

et al. 2014

Int J Energy Environ Eng

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In order to accomplish the objective of studying and optimizing the flow channel geometries and dimensions for high-temperature proton-exchange-membrane (PEM) fuel cells (with operating temperatures above 120°C), a mathematical model has been developed in this work. As the major step of the modeling, the average concentrations of gas species in bulk flows as well as in the layers of electrodes are calculated through mass transfer analysis in one-dimensional direction normal to the membrane-electrodes layers. Therefore, the concentration and activation polarizations are simulated with much less computational work compared to a three-dimensional numerical model. The ohmic loss is taken into consideration through analysis of a representative network circuit simulating the electron and proton conduction in the elements of electrodes and electrolyte, respectively. The simulated results for high-temperature PEM fuel cells were compared with experimental results from literature. The results from the simulation and experimental tests showed good agreement, which validated the mathematical model. As the model requires less computational work, it was used to analyze a large number of cases with different gas flow channel dimensions and operating conditions, and optimization to the dimensions of channels and ribs was accomplished.

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Section: Introductionmentioning

confidence: 99%

Effects of geometry/dimensions of gas flow channels and operating conditions on high-temperature PEM fuel cells

Liu

Hartz

et al. 2014

Int J Energy Environ Eng

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“…The PEM is assumed to be impermeable to gas species [23]. In addition, GDLs and CLs are homogeneous and isotropic, and the contact resistance between different layers is ignored [39]. Computational domain of the 2D proton exchange membrane (PEM) unitized regenerative fuel cell (URFC).…”

mentioning

confidence: 99%

Numerical Study of the Dynamic Response of Heat and Mass Transfer to Operation Mode Switching of a Unitized Regenerative Fuel Cell

Hong

Guo

et al. 2016

Energies

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Abstract:Knowledge concerning the complicated changes of mass and heat transfer is desired to improve the performance and durability of unitized regenerative fuel cells (URFCs). In this study, a transient, non-isothermal, single-phase, and multi-physics mathematical model for a URFC based on the proton exchange membrane is generated to investigate transient responses in the process of operation mode switching from fuel cell (FC) to electrolysis cell (EC). Various heat generation mechanisms, including Joule heat, reaction heat, and the heat attributed to activation polarizations, have been considered in the transient model coupled with electrochemical reaction and mass transfer in porous electrodes. The polarization curves of the steady-state models are validated by experimental data in the literatures. Numerical results reveal that current density, gas mass fractions, and temperature suddenly change with the sudden change of operating voltage in the mode switching process. The response time of temperature is longer than that of current density and gas mass fractions. In both FC and EC modes, the cell temperature and gradient of gas mass fraction in the oxygen side are larger than that in the hydrogen side. The temperature difference of the entire cell is less than 1.5 K. The highest temperature appears at oxygen-side catalyst layer under the FC mode and at membrane under a more stable EC mode. The cell is exothermic all the time. These dynamic responses and phenomena have important implications for heat analysis and provide proven guidelines for the improvement of URFCs mode switching.

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“…The thermal management of the PEMFC is a critical requirement for optimal power generation and the highest level of performance [46,47]. The main duty of a thermal management system is to maintain the desirable temperature (i.e.…”

Section: Pem Fuel Cell Thermal Managementmentioning

confidence: 99%

Nanofluids to improve the performance of PEM fuel cell cooling systems: A theoretical approach

2016

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Numerical investigation of the coupled water and thermal management in PEM fuel cell

Cited by 189 publications

References 52 publications

Effects of geometry/dimensions of gas flow channels and operating conditions on high-temperature PEM fuel cells

Effects of geometry/dimensions of gas flow channels and operating conditions on high-temperature PEM fuel cells

Numerical Study of the Dynamic Response of Heat and Mass Transfer to Operation Mode Switching of a Unitized Regenerative Fuel Cell

Nanofluids to improve the performance of PEM fuel cell cooling systems: A theoretical approach

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