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New Process Concept Solar Driven Redox Cycles - Solid Phase Heat Recovery and Multi Chamber Reduction

Brendelberger, Stefan and Felinks, Jan and Roeb, Martin and Sattler, Christian (2014) New Process Concept Solar Driven Redox Cycles - Solid Phase Heat Recovery and Multi Chamber Reduction. In: ASME 2014 8th International Conference on Energy Sustainability Book of Abstracts, ES-FuelCell2014. ASME 2014 8th International Conference on Energy Sustainability, 30. Jun. - 02. Jul. 2014, Boston, MA, USA.

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Official URL: http://www.asmeconferences.org/esfuelcell2014/

Abstract

A system approach was used for the development of a new process concept for solar driven thermochemical redox cycles. Two aspects of this concept will be presented here. Since a high heat recovery rate for cycles using non-stoichiometric reduction has been identified as elementary in order to reach meaningful overall process efficiencies, a special focus was directed on this aspect. A quasi-countercurrent heat recovery system, which makes use of a particulate heat transfer medium, was outlined and numerically analyzed. The analysis shows that recovery rates of more than 70% seem realistic. Even though the heat recovery system is based on an arrangement of stages including relative complex flow pattern the basic principle seems promising and opens up new pathways for system design and optimization. The second aspect highlighted of the developed process concept is the use of a multi chamber system with optimized reaction conditions for the reduction of the redox material. By optimizing the pressure in a multi chamber system energy savings related to the pumping work of more than 20% are predicted. Also the execution of pre-reduction in the heat recovery system is discussed.

Item URL in elib:https://elib.dlr.de/91689/
Document Type:Conference or Workshop Item (Speech)
Title:New Process Concept Solar Driven Redox Cycles - Solid Phase Heat Recovery and Multi Chamber Reduction
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Brendelberger, Stefanstefan.brendelberger (at) dlr.deUNSPECIFIED
Felinks, Janjan.felinks (at) dlr.deUNSPECIFIED
Roeb, Martinmartin.roeb (at) dlr.deUNSPECIFIED
Sattler, Christianchristian.sattler (at) dlr.deUNSPECIFIED
Date:30 June 2014
Journal or Publication Title:ASME 2014 8th International Conference on Energy Sustainability Book of Abstracts
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:ES-FuelCell2014
Status:Published
Keywords:Redox cycle Heat recovery Concentrated solar radiation
Event Title:ASME 2014 8th International Conference on Energy Sustainability
Event Location:Boston, MA, USA
Event Type:international Conference
Event Dates:30. Jun. - 02. Jul. 2014
Organizer:American Society of Mechanical Engineers
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:10 Nov 2014 15:21
Last Modified:10 Nov 2014 15:21

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