A Packaged and Efficient SOEC System Demonstrator. (2nd June 2015)

• Record Type: Journal Article
• Authors: Chatroux, André; Reytier, Magali; Di Iorio, Stéphane; Bernard, Charlotte; Roux, Guilhem; Petitjean, Marie; Mougin, Julie
• Is Part Of: ECS transactions. Volume 68:Number 1(2015)
• Page Start: 3519
• Page End: 3526
• Publication Date: 2015-06-02
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/06801.3519ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : High Temperature Steam Electrolysis, based on solid oxide electrolysis cells (SOEC) is a promising way to produce hydrogen with high efficiencies. The balance of plant (BoP) is a key point for that technology because the heat management of the system has to be optimized to effectively reach the expected high electrical efficiency. For that purpose, the CEA-LITEN has designed and tested a packaged SOEC system demonstrator. It is based on a single 25-cell-stack and the required auxiliaries, including a steam generator at 150°C and high temperature exchangers to superheat the inlet steam flow thanks to the heat recovered in the exhaust gases. At 700°C, the system produces 1.2 Nm 3 /h of H2 with a total electrical consumption of 3.9 kWh/Nm 3, achieving 91% of efficiency, this efficiency corresponding to the higher heating value (HHV) of the produced hydrogen vs the electrical consumption of the system.