Mathematical modelling of coupled and decoupled water electrolysis systems based on existing theoretical and experimental studies

Antoniou, Antonios; Berastain, Arturo; Hernández, Diego; Celis, César

doi:10.1016/j.ijhydene.2022.03.264

Cited by 12 publications

(3 citation statements)

References 33 publications

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“…Their study is consistent with the findings. Although previous simulations have indicated higher performance at 60 °C, , the experiment revealed a decline in performance after 40 °C due to the combined effects of catalyst poisoning, dissolution, and gas expansion.…”

Section: Resultscontrasting

confidence: 65%

“…The water displacement method was used to determine the volume of the hydrogen gas. The experiments were conducted for 300 s. FE can be calculated using the following equations: − η normalF , normalH 2 = V normalH 2 , Measured V normalH 2 , Theoretical × 100 % V normalH 2 , Theoretical = n normalH 2 R T Measured P n normalH 2 = I 2 F where V Measured is the measured volume of hydrogen production and V Theoretical is the theoretical volume of hydrogen production. n H 2 is the theoretical number of moles of hydrogen gas produced, R is the universal gas constant (8.3145 J/K), T Meaured is the measured temperature, and P is the pressure of the hydrogen gas at a given temperature.…”

Section: Resultsmentioning

confidence: 99%

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Effect of Flow Channel Shape and Operating Temperature on the Performance of a Proton Exchange Membrane Electrolyzer Cell

2023

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Proton exchange membrane electrolyzer cells (PEMECs) are considered to be an environmentally friendly system for producing high-purity hydrogen through water electrolysis. However, they require optimal configurations and operating conditions for energy and costeffective practical applications. In this study, four different types of flow paths inside a PEMEC were proposed, namely, parallel, single-channel, four-channel, and parallel grid, and the effect of the flow path shape inside the PEMEC on hydrogen evolution reaction was examined. In addition, the optimal operating temperature was determined via electrochemical experiments. The experimental results reveal that the parallel grid flow field yielded the highest current density of 118.04 mA/cm 2 and hydrogen production at a volume flow rate of 6.6 mL/min owing to a relatively higher electrochemical surface area of 1.11657 cm 2 at the optimum operating temperature of 40 °C compared with other flow fields. Computational fluid dynamics analysis results confirmed that at 40 °C the parallel grid flow field has an advantageous path shape for electrolyte distribution inside the PEMEC, and consequently, the appropriate flow rate facilitates the transport of reactants and products. The findings of this study can be used as a reference for PEMEC research in terms of the selection of a suitable flow field geometry and temperature for PEMECs operating under different conditions.

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Section: Resultscontrasting

confidence: 65%

Section: Resultsmentioning

confidence: 99%

Effect of Flow Channel Shape and Operating Temperature on the Performance of a Proton Exchange Membrane Electrolyzer Cell

2023

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“…k is the unit conversion constant from kg-per-hour to liter-per-sec. k is calculated as 38,988 based on data that, 39 KWh of energy is needed to generate 1 Kg of hydrogen [11].…”

Section: Electrolysis Function Blockmentioning

confidence: 99%

Solar-Fuel cell based Islanded DC-Microgrid with hybrid Energy Storage Devices

Gupta

Laledia

2023

Preprint

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The paper discusses a hybrid renewable energy system feeding a variable load in islanded DC-microgrid. The energy management system has been designed to feed load without the need for a load prediction algorithm. The proposed hybrid system consists of two renewable power sources i.e. Solar Photovoltaic, and Fuel cell, and hybrid energy storage devices in the form of a Li-ion battery, Supercapacitor, and an Electrolyzer-hydrogen tank. The system has been modeled on MATLAB Simulink using the library components. The simulation results have been verified by logical analysis. The final steady state DC bus voltage has been controlled within 5 % of the reference value upon the solar variation of 50 % and load variation of 50 % of the rated value.. . .

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How to build a Digital Twin for operating PEM-Electrolyser system – A reference approach

Monopoli,

Semeraro,

Abdelkareem

et al. 2024

Annual Reviews in Control

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Mathematical modelling of coupled and decoupled water electrolysis systems based on existing theoretical and experimental studies

Cited by 12 publications

References 33 publications

Effect of Flow Channel Shape and Operating Temperature on the Performance of a Proton Exchange Membrane Electrolyzer Cell

Effect of Flow Channel Shape and Operating Temperature on the Performance of a Proton Exchange Membrane Electrolyzer Cell

Solar-Fuel cell based Islanded DC-Microgrid with hybrid Energy Storage Devices

How to build a Digital Twin for operating PEM-Electrolyser system – A reference approach

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