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SOLAR THERMOCHEMICAL GENERATION OF HYDROGEN: DEVELOPMENT OF A RECEIVER REACTOR FOR THE DECOMPOSITION OF SULFURIC ACID

Noglik, Adam und Roeb, Martin und Rzepczyk, Thomas und Sattler, Christian und Pitz-Paal, Robert (2007) SOLAR THERMOCHEMICAL GENERATION OF HYDROGEN: DEVELOPMENT OF A RECEIVER REACTOR FOR THE DECOMPOSITION OF SULFURIC ACID. In: ASME Conference Energy Sustainability 2007, . American Society of Mechanical Engineers. 2007 ASME Energy Sustainability Conference (ES2007), 2007-06-27 - 2007-06-30, Long Beach, CA (USA). ISBN 0-7918-3798-X.

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Kurzfassung

A key step in the sulfur based thermochemical cycles for hydrogen production is the highly endothermic decomposition of sulfuric acid at temperatures between 800 °C and 1200 °C. This reaction can be carried out in a receiver-reactor which is irradiated with concentrated solar radiation from a heliostat field. To investigate this process a test reactor was developed and built. The reaction takes place on the surface of a catalytically coated porous absorber irradiated through a quartz pane of the receiver-reactor. This concept has the advantage of a minimum number of heat transferring steps. Experiments with the test reactor were performed in the DLR solar furnace in Cologne. Firstly the feasibility of a solar decomposition of sulfuric acid in a receiver-reactor containing volumetric absorbers was investigated and proven. Then the reactor was qualified at different operating points. Finally the receiver-reactor and strategy of operation was iteratively optimized with respect to chemical conversion and reactor efficiency. Several test series were performed with variation of the absorber temperature, the mass flow and the dilution rate. Partial pressure of SO<sub>3</sub>, residence time, absorber temperature, and the kind of catalyst applied were identified and quantified as parameters with the most relevant influence on chemical conversion and reactor efficiency. The operation behavior observed and the detailed knowledge of dependencies of different operation parameters assist in evaluating the potential of scaling up the described technology.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Zusätzliche Informationen:Best Paper Award - Hydrogen Track ASME ES 2007
Titel:SOLAR THERMOCHEMICAL GENERATION OF HYDROGEN: DEVELOPMENT OF A RECEIVER REACTOR FOR THE DECOMPOSITION OF SULFURIC ACID
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Noglik, AdamNICHT SPEZIFIZIERT
Roeb, MartinNICHT SPEZIFIZIERT
Rzepczyk, ThomasNICHT SPEZIFIZIERT
Sattler, ChristianNICHT SPEZIFIZIERT
Pitz-Paal, RobertNICHT SPEZIFIZIERT
Datum:28 Juni 2007
Erschienen in:ASME Conference Energy Sustainability 2007
Referierte Publikation:Ja
In ISI Web of Science:Nein
Seitenbereich:
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
Somasundaram, SriramNICHT SPEZIFIZIERT
Reddy, AgamiNICHT SPEZIFIZIERT
Rahman, MuhammadNICHT SPEZIFIZIERT
Neumann, AndreasNICHT SPEZIFIZIERT
Verlag:American Society of Mechanical Engineers
Name der Reihe:Energy Susatinability
ISBN:0-7918-3798-X
Status:veröffentlicht
Stichwörter:hydrogen, thermocemical cycles, solar hydrogen, sufur iodine, General Atomics
Veranstaltungstitel:2007 ASME Energy Sustainability Conference (ES2007)
Veranstaltungsort:Long Beach, CA (USA)
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2007-06-27 - 2007-06-30
Veranstalter :American Society of Mechanical Engineers
HGF - Forschungsbereich:Energie
HGF - Programm:Erneuerbare Energie
HGF - Programmthema:E SF - Solarforschung (alt)
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SF - Solarforschung
DLR - Teilgebiet (Projekt, Vorhaben):E - Solare Stoffumwandlung (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Technische Thermodynamik > Solarforschung
Hinterlegt von: Dr.rer.nat. Christian Sattler
Hinterlegt am:09 Aug 2007
Letzte Änderung:12 Dez 2013 20:25

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