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Content archived on 2024-04-15

MULTI-CHANNEL SOLID OXIDE FUEL CELL REACTORS.

Objective

THE MAIN OBJECTIVES OF THE PRESENT R AND D PROJECT WILL BE AS FOLLOW :
A) FABRICATION AND EVALUATION OF SMALL (20W) MULTI-CHANNEL SOLID OXIDE FUEL CELL (SOFC)REACTORS AND ALTERNATIVE CERAMIC OXIDE ELECTROLYTE COMPOSITIONS.
B) THE ABOVE EXPERIMENTAL RESULTS AND MODELLING STUDIES WILL CONSTITUTE THE BASIS FOR SUBSEQUENT DEVELOPMENT OF LARGER (1KW) PROTOTYPE REACTORS INCORPORATING THE NEW OXIDE - ELECTROLYTE COMPOSITIONS, AND
C) THE COMMERCIAL EXPLOITATION POSSIBILITIES OF SUCH SOFC REACTORS IN COMBINED HEAT AND POWER AND COAL GASIFICATION SYSTEMS WILL ALSO BE EVALUATED.

THE PRESENT PROPOSAL INCORPORATES FIVE PRINCIPAL THEMES RELEVANT TO THE FABRICATION AND PRELIMINARY EVALUATION OF NOVEL MULTI-CHANNEL SOLID OXIDE FUEL CELL (SOFC) REACTORS :
1) FABRICATION OF SMALL (20W) PROTOTYPE FLOW-THROUGH AND CROSS-FLOW-MULTI-CHANNEL REACTORS. THESE ASSEMBLIES WILL BE PRODUCED WITH APPROXIMATELY 50 CHANNELS/CM TO THE POWER OF 2 AND WALL THICKNESSES IN THE RANGE 100-200 MICROMETERS WHICH IS COMPARABLE TO CURRENT TECHNOLOGY USED IN THE MASS PRODUCTION OF CORDIERITE (2MGO.2AL2O3.5SIO2) HONEYCOMB CATALYST SUPPORT. EXISTING ZIRCONIA-YTRIA ELECTROLYTE COMPOSITIONS WILL INITIALLY BE USED IN THE FABRICATION OF THE MULTI-CELL REACTORS WHICH WILL BE PRODUCED BY INDUSTRIAL GROUPS COLLABORATING IN THE PROPOSAL.
2) INCORPORATION OF ELECTRODE STRUCTURES AND CURRENT LEADS INTO THE ADJACENT AIR/FUEL CHANNELS. A VARIETY OF TECHNOLOGIES WILL BE INVESTIGATED INCLUDING SOL-GEL ELECTROPHORETIC AND CHEMICAL VAPOUR DEPOSITION. ATTENTION WILL ALSO BE GIVEN TO JOINING THE AIR AND FUEL GAS MANIFOLDS TO THE MULTI-CHANNEL REACTORS.
3) CURRENT-VOLTAGE PARAMETERS AND OTHER PERFORMANCE CHARACTERISTICS OF THE MULTICHANNEL REACTORS WILL BE EVALUATED IN THE TEMPERATURE RANGE 900-1000 CELSIUS DEGREES FOR H2, H2+CO, AND CH4 FUELS. PRELIMINARY ASSESSMENT WILL ALSO BE MADE OF THE EFFICIENCY OF INTERNAL REFORMING PROCESSES.
4) FABRICATION AND CHARACTERIZATION OF A SERIES OF ALTERNATIVE CERAMIC OXIDE ELECTROLYTES WILL BE CARRIED OUT. THESE DATA WILL PROVIDE AN IMPORTANT CONTRIBUTION TO THE DEVELOPMENT OF SUBSEQUENT MULTI-CHANNEL FUEL CELL REACTORS DESIGNED TO OPERATE AT LOWER TEMPERATURES (600-800 CELSIUS DEGREES).
5) PRELIMINARY MODELLING STUDIES WILL BE MADE OF THE MULTI-CHANNEL SOFC REACTORS ENSURE THE OPTIMIZATION OF MASS AND THERMAL FLUXES FOR APPROPRIATE SERIES/PARALLEL CELL CONNECTIONS AND DIFFERENT GASEOUS FLOW-RATES, CELL AND REACTOR DIMENSIONS, ETC.

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Coordinator

CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS
EU contribution
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Address
Antigua carretera de Valencia KM 24.300
28500 ARGANDA DEL REY
Spain

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Total cost

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Participants (5)

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