The effects of air stoichiometry and air excess ratio on the transient response of a PEMFC under load change conditions

Kim, Bosung; Cha, Dae-Ryong; Kim, Yong Chan

doi:10.1016/j.apenergy.2014.10.046

Cited by 111 publications

(20 citation statements)

References 20 publications

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“…Furthermore, cathode stoichiometry has a positive effect on fuel cell performance unless it is below 1.6 [45]. Similarly to Harms et al, Figure 8 shows that a significant voltage drop was observed at cathode stoichiometry of 1.5 [65].…”

Section: Stoichiometric Ratiosupporting

confidence: 56%

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PEMFC for aeronautic applications: A review on the durability aspects

et al. 2017

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Proton exchange membrane fuel cells (PEMFC) not only offer more efficient electrical energy conversion, relative to on-ground/backup turbines but generate by-products useful in aircraft such as heat for ice prevention, deoxygenated air for fire retardation and drinkable water for use on-board. Consequently, several projects (e.g. DLR-H2 Antares and RAPID2000) have successfully tested PEMFC-powered auxiliary unit (APU) for manned/unmanned aircraft. Despite the progress from flying PEMFC-powered small aircraft with 20 kW power output as high as 1 000 m at 100 km/h to 33 kW at 2 558 m, 176 km/h [1-3], durability and reliability remain key challenges. This review reports on the inadequate understanding of behaviour of PEMFC under aeronautic conditions and the lack of predictive methods conducive for aircraft that provide real-time information on the State of Health of PEMFCs. Highlights: The main research findings are -To minimize performance loss due to high altitude and inclination by adjusting cathode stoichiometric ratio. -To improve quality of oxygen-depleted air by controlling operating temperature and stoichiometric ratio. -Need to devise real time prediction methods conducive for determining PEMFC SoH in aircraft.

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Section: Stoichiometric Ratiosupporting

confidence: 56%

“…As a result, several studies are conducted to better understand the effect of stoichiometric ratio on fuel cell performance [30,44,45,62,64,65]. Both studies by Kim et al, and Candusso et al reported that anode and cathode stoichiometric ratio had no significant effect on fuel cell performance [62,66].…”

Section: Stoichiometric Ratiomentioning

confidence: 99%

PEMFC for aeronautic applications: A review on the durability aspects

et al. 2017

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“…As compared with other FC types, the proton exchange membrane fuel cell (PEMFC) is operating at evidently lower temperatures (80-90°C). The PEMFC becomes a desirable option for power generation in the 21th century and some recent studies [1][2][3][4][5] have experimentally or numerically observed its various phenomena of reactant gas transport.…”

Section: Introductionmentioning

confidence: 99%

A three-dimensional numerical investigation of trapezoid baffles effect on non-isothermal reactant transport and cell net power in a PEMFC

Perng

2015

Applied Energy

161

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“…Yakıt hücrelerinin çalışmasına etki eden faktörler ile ilgili bir literatür taraması yapıldığında yakıt hücresi yığın performansına stokiyometrik oranın etkisinin incelendiği farklı çalışmalara ulaşılmıştır [10,[17][18][19][20][21]. Bu çalışmalarda sadece katot stokiyometrisinin etkisini dikkate alan [17], geri basınçlandırma ve anot stokiyometrisini inceleyen [18], hava stokiyometrisini yani katot stokiyometrisi dikkate alan [19], yük değişimi esnasındaki stokiyometri değişimini inceleyen [20], PEM yakıt hücresi çalışma koşullarının (akım yoğunluğu, çalışma sıcaklığı, katot stokiyometrisi, vb.) ısı ve su oluşumu üzerine etkilerini inceleyen çalışmalara ulaşılmıştır.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Stokiyometri Oranının İki Hücreli PEM Yakıt Hücresi Yığını Performansına Etkisinin İncelenmesi

Cellek

Bilgili

2021

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

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Two PEM fuel cells are constructed as a stack and effects of stoichiometric ratio values on stack performance are studied by numerically. Stoichiometric ratio values for fuel cell stack is investigated as an important operating parameter. Numerical studies are carried out for certain anode and cathode stoichiometric ratio values. Effect of stoichiometry ratio values on the performance of the stack compared by plotting polarization curves for each case. Highlights • Effects of stoichiometry • Analysis of PEM stack • CFD Modelling

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The effects of air stoichiometry and air excess ratio on the transient response of a PEMFC under load change conditions

Cited by 111 publications

References 20 publications

PEMFC for aeronautic applications: A review on the durability aspects

PEMFC for aeronautic applications: A review on the durability aspects

A three-dimensional numerical investigation of trapezoid baffles effect on non-isothermal reactant transport and cell net power in a PEMFC

Stokiyometri Oranının İki Hücreli PEM Yakıt Hücresi Yığını Performansına Etkisinin İncelenmesi

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