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A new concept for hybrid sensible/thermochemical storage of solar heat in cascaded redox-oxide-based thermochemical reactors/heat exchangers

Agrafiotis, Christos and de Oliveira, Lamark and Roeb, Martin and Sattler, Christian (2015) A new concept for hybrid sensible/thermochemical storage of solar heat in cascaded redox-oxide-based thermochemical reactors/heat exchangers. Energy Science & Technology Conference, 20.-22. Mai 2015, Karlsruhe, Deutschland.

Full text not available from this repository.

Official URL: http://www.est-conference.com/en/home/homepage.jsp

Abstract

The current work is a follow-up of ideas introduced already in the literature, namely of combining active thermochemical redox oxide pairs (e.g. Co3O4/CoO, Mn2O3/Mn3O4, CuO/Cu2O) with porous ceramic structures in order to effectively store solar heat in air-operated Solar Tower Power Plants. If such oxides are coated on porous heat exchange modules, solar heat produced during on-sun operation can be used to power the endothermic reduction of the oxide; the thermal energy can be entirely recovered by the reverse exothermic oxidation reaction during off-sun operation. Thus the storage concept is rendered from “purely” sensible to a “hybrid” sensible/thermochemical one. In addition, the construction modularity of the current state-of-the-art sensible storage systems provides for the implementation of concepts like spatial variation of redox oxide materials chemistry along the reactor/heat exchanger, to enhance the utilization of the heat transfer fluid

Item URL in elib:https://elib.dlr.de/99237/
Document Type:Conference or Workshop Item (Speech)
Title:A new concept for hybrid sensible/thermochemical storage of solar heat in cascaded redox-oxide-based thermochemical reactors/heat exchangers
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Agrafiotis, Christoschristos.agrafiotis (at) dlr.deUNSPECIFIED
de Oliveira, Lamarklamark.de-oliveira (at) dlr.deUNSPECIFIED
Roeb, MartinMartin.roeb (at) dlr.deUNSPECIFIED
Sattler, Christianchristian.sattler (at) dlr.deUNSPECIFIED
Date:20 May 2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:thermochemical heat storage, metal oxides, concentrated solar Radiation, solar thermal power plants
Event Title:Energy Science & Technology Conference
Event Location:Karlsruhe, Deutschland
Event Type:international Conference
Event Dates:20.-22. Mai 2015
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Systems (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Solar Process Technology (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solare Verfahrenstechnik
Deposited By: Sattler, Prof. Dr. Christian
Deposited On:09 Nov 2015 09:16
Last Modified:10 May 2016 23:34

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