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Development of a novel solar reactor for thermochemical water-splitting

Felinks, Jan and Neises, Martina and Sattler, Christian and Pitz-Paal, Robert (2012) Development of a novel solar reactor for thermochemical water-splitting. 8th SOLLAB Doctoral Colloquium, 25.-26. Jun. 2012, Almería, Spain.

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Hydrogen is an energy carrier with a great future potential. The field of application is huge because it has a high energy density and it is easy to handle. Furthermore the big advantage of emission-free combustion makes it unrivalled. A big challenge is the hydrogen production from renewable energy sources on an economic and industrial scale. The present work deals with the production of hydrogen by thermochemical water-splitting. The reacting material is a metal oxide that is oxidised by the water-splitting reaction with water and then thermally reduced at temperatures up to 1400°C. The redox-material remains solid during the whole cycle. The purpose of this work is to develop a novel solar reactor for the described process that supports temperatures of about 1400°C needed for the thermal reduction step. The major points of the novel design are to achieve high reacting surface areas for the chemical reaction and a high thermal efficiency of the reactor. Up to now a literature research of existing reactor concepts and the collection of requirements have been done. High reacting surface areas can be realised with a particle reactor, for example a fluidised bed. The high temperature needed for the thermal reduction can be achieved with a directly irradiated reactor concept without the use of a heat transfer fluid. An overview of possible reactor concepts has been outlined. In order to evaluate these concepts a system of criteria was created which helps to choose the most promising one. The next steps are to choose a suitable reactor concept and to develop a new experimental reactor based on this concept.

Item URL in elib:https://elib.dlr.de/77960/
Document Type:Conference or Workshop Item (Speech)
Title:Development of a novel solar reactor for thermochemical water-splitting
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Sattler, ChristianSF-VNUNSPECIFIED
Date:25 July 2012
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:hydrogen, metal oxide, solar, reactor concept, thermochemical cycle
Event Title:8th SOLLAB Doctoral Colloquium
Event Location:Almería, Spain
Event Type:international Conference
Event Dates:25.-26. Jun. 2012
Organizer:Alliance of European Laboratories for Research and Technology on Solar Concentrating Systems
HGF - Research field:Energy, Energy, Energy, Energy
HGF - Program:Efficient Energy Conversion (old), Efficient Energy Conversion (old), Renewable Energies, Renewable Energies
HGF - Program Themes:E EV - Energy process technology (old), E VG - Combustion and Gas Turbine Technologies (old), E SF - Solar research (old), E SF - Solar research (old)
DLR - Research area:Energy, Energy, Energy, Energy
DLR - Program:E EV - Energy process technology, E VG - Combustion and Gas Turbine Technologies, E SF - Solar research, E SF - Solar research
DLR - Research theme (Project):E - Thermochemische Prozesse (old), E - Brennstoffe (old), E - Solare Hochtemperatursysteme (old), E - Solare Verfahrenstechnik (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solare Verfahrenstechnik
Deposited By: Felinks, Jan
Deposited On:29 Oct 2012 13:47
Last Modified:29 Oct 2012 13:47

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