Airflow Management in Solid Oxide Electrolyzer (SOE) Operation: Performance Analysis

Airflow Management in Solid Oxide Electrolyzer (SOE) Operation: Performance Analysis

Hydrogen is being studied as a means of energy storage and can be synthetized to store renewable energy and successively used as a fuel for power production or transport purposes. High temperature solid oxide electrolyzers (SOE) are proposed as a technology to produce hydrogen with high energy effic...

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Bibliographic Details
Published in:ChemEngineering Vol. 1; no. 2; p. 13
Main Authors: Barelli, Linda, Bidini, Gianni, Cinti, Giovanni
Format: Journal Article
Language:English
Published: Basel MDPI AG 01-12-2017
Subjects:
Air flow
Chemical engineering
Computing time
Conflicts of interest
Efficiency
Electrodes
Energy
Energy storage
Equilibrium
Flow velocity
Heat exchangers
Hydrogen
hydrogen production
Hydrogen storage
Hydrogen-based energy
Oxidation
Power efficiency
solid oxide electrolyzer
Solid oxide fuel cells
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Summary:Hydrogen is being studied as a means of energy storage and can be synthetized to store renewable energy and successively used as a fuel for power production or transport purposes. High temperature solid oxide electrolyzers (SOE) are proposed as a technology to produce hydrogen with high energy efficiency and high power density. Within the studies on SOE operation, little attention has been given to the oxygen electrode side, where air is normally used as a sweep gas. In this study, we consider the option of reducing the air flow rate when operating an SOE stack. The advantages in terms of efficiency are calculated, showing that efficiency increases up to 2.8% when reducing the air flow rate down to 7% of nominal value.
ISSN:2305-7084
2305-7084
DOI:10.3390/chemengineering1020013