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Cobalt oxide-based structured thermochemical reactors/heat exchangers for solar thermal energy storage in Concentrated Solar Power plants

Agrafiotis, Christos und Roeb, Martin und Sattler, Christian (2014) Cobalt oxide-based structured thermochemical reactors/heat exchangers for solar thermal energy storage in Concentrated Solar Power plants. In: Proceedings ASME 2014 8th International Conference on Energy Sustainability collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology, ES2014-6336 pp. V001T02A005; (8 pages). ASME. ASME 2014 8th International Conference on Energy Sustainability (ES2014), 2014-06-30 - 2014-07-02, Boston, MA, USA. doi: 10.1115/ES2014-6336. ISBN 978-0-7918-4586-8.

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Kurzfassung

Based on the characteristics of the oxide redox pair system Co3O4/CoO as a thermochemical heat storage medium and the advantages of porous ceramic structures like honeycombs and foams in heat exchange applications, the idea of employing such ceramic structures coated with or manufactured entirely from a redox material like Co3O4, has been implemented. Thermo-Gravimetric Analysis (TGA) experiments have demonstrated that laboratory-scale Co3O4-coated, redox-inert ceramic foams and honeycombs exhibited repeatable, cyclic reduction-oxidation operation within the temperature range 800-1000oC, employing all the redox material incorporated, even at loading levels exceeding 100 wt% loading percentages. To further improve the volumetric heat storage capacity, monolithic porous ceramic foams made entirely of Co3O4 were manufactured, together with analogous pellets. Such porous structures were also capable of cyclic reduction–oxidation, exploiting the entire amount of Co3O4 used in their manufacture. In this perspective, “open” porous structures like the ones of ceramic foams seem to have significant Advantages in addressing problems associated with cyclic expansioncontraction that could be detrimental to structural integrity.

elib-URL des Eintrags:https://elib.dlr.de/91449/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Cobalt oxide-based structured thermochemical reactors/heat exchangers for solar thermal energy storage in Concentrated Solar Power plants
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Agrafiotis, Christoschristos.agrafiotis (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Roeb, MartinMartin.roeb (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Sattler, Christianchristian.sattler (at) dlr.dehttps://orcid.org/0000-0002-4314-1124NICHT SPEZIFIZIERT
Datum:30 Juni 2014
Erschienen in:Proceedings ASME 2014 8th International Conference on Energy Sustainability collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
DOI:10.1115/ES2014-6336
Seitenbereich:ES2014-6336 pp. V001T02A005; (8 pages)
Verlag:ASME
ISBN:978-0-7918-4586-8
Status:veröffentlicht
Stichwörter:Cobalt , Heat exchangers , Solar thermal power , Concentrating solar power , Storage , Ceramic foam , oxidation , Heat storage , Ceramics , Heat , Temperature , Foams (Chemistry) thermochemical cycles heat storage
Veranstaltungstitel:ASME 2014 8th International Conference on Energy Sustainability (ES2014)
Veranstaltungsort:Boston, MA, USA
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:30 Juni 2014
Veranstaltungsende:2 Juli 2014
Veranstalter :American Society of Mechanical Engineers
HGF - Forschungsbereich:Energie
HGF - Programm:Erneuerbare Energie
HGF - Programmthema:Konzentrierende Solarsysteme (alt)
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SF - Solarforschung
DLR - Teilgebiet (Projekt, Vorhaben):E - Solare Verfahrenstechnik (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Solarforschung > Solare Verfahrenstechnik
Hinterlegt von: Sattler, Prof. Dr. Christian
Hinterlegt am:05 Nov 2014 16:34
Letzte Änderung:24 Apr 2024 19:57

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