Modeling of wind farm combined with PEM electrolyzer and combustion turbine

Xuan, Shihua; Hu, Weihao; Gökmen, Nuri; Chen, Zhe

doi:10.1109/appeec.2016.7779526

Cited by 2 publications

(4 citation statements)

References 12 publications

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“…1b). 27 Specifically, the wind turbine power output was simplified as a series of ramp-ups and rampdowns in current density, where the maximum current density does not exceed 200 mA cm −2 to avoid corrosion conditions. For a quantitative comparison of the cell performance, we compared the operating cell potential and the gas saturation in the anode PTL at the same current density (i = 86 mA cm −2 ) at later points of time.…”

Section: Methodsmentioning

confidence: 99%

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Transient Gas Distribution in Porous Transport Layers of Polymer Electrolyte Membrane Electrolyzers

Lee

Zhao

et al. 2020

J. Electrochem. Soc.

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Here, we elucidated the dynamic gas transport behavior in the anode porous transport layer (PTL) of polymer electrolyte membrane (PEM) electrolyzers via in operando synchrotron X-ray imaging. The imaging results showed that the gas saturation in the PTL reached steady state more rapidly with a steep current density ramp-up and a shallow ramp-down (compared to a shallow ramp-up and a steep ramp-down, respectively). Additionally, the gas accumulation was characterized by a faster response time compared to that of the gas removal due to the relatively slow migration of residual gas from the catalyst layer-PTL interface to the flow channels. Furthermore, we investigated the impact of gas response behavior on gas saturation during intermittent electrolyzer operation. Intermittent operation led to an increase in residual gas accumulation, which negatively impacted the electrolyzer performance. Our results are key for informing design and operating strategies for mitigating such hysteresis effects and improving the performance of PEM electrolyzers when coupled with intermittent renewable energy sources.

show abstract

Section: Methodsmentioning

confidence: 99%

“…The ramps were immediately followed by constant current operation. (b) Intermittent-current operation based on a previously reported wind turbine power output (P WT ) by Xuan et al27 A simplified representation of the output power profile involved a series of current ramp-ups and ramp-downs.…”

mentioning

confidence: 99%

Transient Gas Distribution in Porous Transport Layers of Polymer Electrolyte Membrane Electrolyzers

Lee

Zhao

et al. 2020

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…The ramps were immediately followed by constant current operation. (b) Intermittent current operation based on a previously reported wind turbine power output (P WT ) by Xuan et al (26). A simplified representation of the output power profile involves a series of current ramp-ups and ramp-downs.…”

Section: Cell Assembly and Transient Operation Modesmentioning

confidence: 99%

“…In the intermittent-current experiment, a current density profile was extracted from a previously reported power output of a wind turbine (Fig. 1b) (26). Specifically, the wind turbine power output was simplified as a series of ramp-ups and ramp-downs in i, where the maximum i does not exceed 200 mA/cm 2 to avoid corrosion conditions.…”

Section: Cell Assembly and Transient Operation Modesmentioning

confidence: 99%

Transient Gas Saturation in Porous Transport Layers of Polymer Electrolyte Membrane Electrolyzers

Lee

Zhao

et al. 2019

ECS Trans.

View full text Add to dashboard Cite

Here, we elucidated the dynamic gas transport behavior in the anode porous transport layer (PTL) of polymer electrolyte membrane (PEM) electrolyzers via in operando synchrotron X-ray imaging. The imaging results showed that the gas saturation in the PTL reached steady state more rapidly with a steep current density ramp up and a shallow ramp down (compared to a shallow ramp-up and a steep ramp-down). Additionally, the gas accumulation had faster response time than gas removal due to the relatively slow migration of residual gas out of the PTL. Furthermore, we investigated the impact of gas response behavior on gas saturation during intermittent electrolyzer operation. Intermittent operation led to an increase in residual gas accumulation, which negatively impacted the electrolyzer performance. Our results are key for informing design and operating strategies for mitigating such hysteresis effects and improving the performance of PEM electrolyzers when coupled with intermittent renewable energy sources.

show abstract

Modeling of wind farm combined with PEM electrolyzer and combustion turbine

Cited by 2 publications

References 12 publications

Transient Gas Distribution in Porous Transport Layers of Polymer Electrolyte Membrane Electrolyzers

Transient Gas Distribution in Porous Transport Layers of Polymer Electrolyte Membrane Electrolyzers

Transient Gas Saturation in Porous Transport Layers of Polymer Electrolyte Membrane Electrolyzers

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