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Modeling of a solar receiver–reactor for sulfur-based thermochemical cycles for hydrogen generation

Noglik, Adam und Roeb, Martin und Sattler, Christian und Pitz-Paal, Robert (2011) Modeling of a solar receiver–reactor for sulfur-based thermochemical cycles for hydrogen generation. International Journal of Energy Research, 35 (5), Seiten 449-458. DOI: 10.1002/er.1707.

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Kurzfassung

Sulfur based thermochemical cycles for hydrogen generation from water have one reaction step in common which is the decomposition of sulfuric acid as one of the most energy consuming steps. The present work deals with the development of a dynamic mathematical model of a solar reactor. for this key step. One of the core parts of the model is a part model of the reaction kinetics of the decomposition of sulfur trioxide, which is based on experiments investigating the kinetics of the used catalyst platinum coated on a ceramic solar absorber. Other part models describe e. g. the absorption of solar radiation, heat conduction in the absorber, convection between gas and the absorber walls and energy losses due to heat radiation. A comprehensive validation of the reactor model is performed using measured data which is gained in experiments with a prototype reactor. The operating behavior of the real reactor is compared with the results of the numerical simulation with the model. The validation is in particular done by reproducing the influences of individual parameters on the chemical conversion and the reactor efficiency. The relative deviations between experimental data and simulation results are mostly within the range of measurement accuracy. In particular the good agreement of calculated values of the derived parameters SO3 conversion and reactor efficiency with those determined from the experiments qualify the model for optimization purposes.

Dokumentart:Zeitschriftenbeitrag
Titel:Modeling of a solar receiver–reactor for sulfur-based thermochemical cycles for hydrogen generation
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Noglik, AdamNICHT SPEZIFIZIERT
Roeb, Martinmartin.roeb@dlr.de
Sattler, Christianchristian.sattler@dlr.de
Pitz-Paal, Robertrobert.pitz-paal@dlr.de
Datum:2011
Erschienen in:International Journal of Energy Research
Referierte Publikation:Ja
In Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:35
DOI :10.1002/er.1707
Seitenbereich:Seiten 449-458
Status:veröffentlicht
Stichwörter:hydrogen, thermochemical cycle, volumetric receiver, solar reactor
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 Verfahrenstechnik (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Solarforschung
Hinterlegt von: Dr.rer.nat. Martin Roeb
Hinterlegt am:07 Dez 2011 14:36
Letzte Änderung:12 Dez 2013 21:28

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