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Solar hydrogen by high-temperature electrolysis: Flowsheeting and experimental analysis of a tube-type receiver concept for superheated steam production

Houaijia, Anis und Breuer, Stefan und Thomey, Dennis und Brosig, Christian und Säck, Jan-Peter und Roeb, Martin und Sattler, Christian (2014) Solar hydrogen by high-temperature electrolysis: Flowsheeting and experimental analysis of a tube-type receiver concept for superheated steam production. Energy Procedia, 49, Seiten 1960-1969. Elsevier. DOI: 10.1016/j.egypro.2014.03.208. ISSN 1876-6102.

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Kurzfassung

High-temperature electrolysis (HTE) offers the potential of considerably higher efficiency than conventional alkaline electrolysis when producing hydrogen from water by solar energy. The production rate of the alkaline electrolyzer process is limited since the whole energy demand is covered by electricity. By contrast, in HTE part of the energy can be introduced as high temperature heat from concentrated solar power (CSP) leading to a significantly higher process efficiency. In the internal project SoHTEk a solar tube-type receiver to superheat steam to 700 °C for HTE was developed. The receiver was operated in DLR’s solar Simulator with up to 5 kg/h of steam reaching an outlet temperature of about 700 °C at a thermal efficiency of 40 % and a solar power of about 4 kW. In addition, a flowsheeting analysis was carried out of a HTE process with direct steam generation on a solar tower. Simulation of the process at steady-state yielded a thermal-to-hydrogen efficiency of 26 %. A subsequent sensitivity Analysis indicated the potential to reach efficiencies of 38 % and more.

Dokumentart:Zeitschriftenbeitrag
Titel:Solar hydrogen by high-temperature electrolysis: Flowsheeting and experimental analysis of a tube-type receiver concept for superheated steam production
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Houaijia, Anisanis.houaijia@dlr.de
Breuer, Stefanstefan.breuer@dlr.de
Thomey, Dennisdennis.thomey@dlr.de
Brosig, ChristianSF-SOL
Säck, Jan-Peterjan-peter.saeck@dlr.de
Roeb, MartinMartin.roeb@dlr.de
Sattler, Christianchristian.sattler@dlr.de
Datum:1 Juni 2014
Erschienen in:Energy Procedia
Referierte Publikation:Ja
In SCOPUS:Ja
In ISI Web of Science:Nein
Band:49
DOI :10.1016/j.egypro.2014.03.208
Seitenbereich:Seiten 1960-1969
Verlag:Elsevier
ISSN:1876-6102
Status:veröffentlicht
Stichwörter:high temperature electrolysis; solar; hydrogen
HGF - Forschungsbereich:Energie
HGF - Programm:Erneuerbare Energie
HGF - Programmthema:Konzentrierende Solarsysteme
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SF - Solarforschung
DLR - Teilgebiet (Projekt, Vorhaben):E - Solare Verfahrenstechnik (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Solarforschung > Solare Verfahrenstechnik
Hinterlegt von: Dr.rer.nat. Christian Sattler
Hinterlegt am:07 Aug 2014 15:51
Letzte Änderung:16 Jun 2015 16:32

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