Bonk, Alexander und Braun, Markus und Sötz, Veronika und Bauer, Thomas (2019) Enhancing the thermal stability of Solar Salt to and above 600°C in extended lab-scale. In: Energy Procedia. SolarPaces 2019, 2019-10-01 - 2019-10-04, Daegu, Südkoreea.
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Kurzfassung
Future trends push TES towards higher temperatures to increase solar-to-electricity conversion efficiency and novel storage materials are often considered the only viable option. To date these candidates suffer from either high costs (carbonate salts containing Li+) or severely attack structural materials (chloride salts) and are far from industrial implementation. An alternative approach is investigated in our work, the use of the classical Solar Salt with sophisticated gas management which selectively shifts the chemical equilibrium to the stable nitrate-side of the decomposition reaction. We demonstrate that the thermal stability of conventional Solar Salt (60-40wt % NaNO3-KNO3) is substantially increased when the storage system including the gas system is simply but effectively sealed. The key to this novel data is the unique feature of in-situ sample extraction and post-analysis that allows for a quasi in-situ determination of molten salt stability in terms of nitrite and oxide ion formation. Our investigations present clear evidence on the enhanced thermal stability and at a scale of experiments that is two magnitudes larger than in conventional experiments.
elib-URL des Eintrags: | https://elib.dlr.de/132335/ | ||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||
Titel: | Enhancing the thermal stability of Solar Salt to and above 600°C in extended lab-scale | ||||||||||||||||||||
Autoren: |
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Datum: | Oktober 2019 | ||||||||||||||||||||
Erschienen in: | Energy Procedia | ||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | Molten Nitrate Salt, Thermal Stability, Extended Stability, Thermal Energy Storage, Concentrating Solar Power | ||||||||||||||||||||
Veranstaltungstitel: | SolarPaces 2019 | ||||||||||||||||||||
Veranstaltungsort: | Daegu, Südkoreea | ||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||
Veranstaltungsbeginn: | 1 Oktober 2019 | ||||||||||||||||||||
Veranstaltungsende: | 4 Oktober 2019 | ||||||||||||||||||||
HGF - Forschungsbereich: | Energie | ||||||||||||||||||||
HGF - Programm: | Speicher und vernetzte Infrastrukturen | ||||||||||||||||||||
HGF - Programmthema: | Thermische Energiespeicher | ||||||||||||||||||||
DLR - Schwerpunkt: | Energie | ||||||||||||||||||||
DLR - Forschungsgebiet: | E SP - Energiespeicher | ||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | E - Thermochemische Prozesse (Speicher) (alt) | ||||||||||||||||||||
Standort: | Stuttgart | ||||||||||||||||||||
Institute & Einrichtungen: | Institut für Technische Thermodynamik > Thermische Prozesstechnik | ||||||||||||||||||||
Hinterlegt von: | Bonk, Alexander | ||||||||||||||||||||
Hinterlegt am: | 16 Dez 2019 15:09 | ||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:35 |
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