- Concentrated Solar Power (CSP) systems are able to store energy cost-effectively in their integrated thermal energy storage (TES). By intelligently combining Photovoltaics (PV) systems with CSP, a further cost reduction of solar power plants is expected, as well as an increase in dispatchability and flexibility of power generation. PV-powered Resistance Heaters (RH) can be deployed to raise the temperature of the molten salt hot storage from 385 °C up to 565 °C in a Parabolic Trough Collector (PTC) plant. To avoid freezing and decomposition of molten salt, the temperature distribution in the electrical resistance heater is investigated in the present study. For this purpose, a RH has been modeled and CFD simulations have been performed. The simulation results show that the hottest regions occur on the electric rod surface behind the last baffle. A technical optimization was performed by adjusting three parameters: Shell-baffle clearance, electric rod-baffle clearance and number of baffles. After the technical optimization was carried out, the temperature difference between the maximum temperature and the average outlet temperature of the salt is within the acceptable limits, thus critical salt decomposition has been avoided. Additionally, the CFD simulations results were analyzed and compared with results obtained with a one-dimensional model in Modelica.
Metadaten| Verfasserangaben: | Mahdi Zahra, Merige Phani Srujan, Ricardo Alexander Chico Caminos, Pascal SchmitzORCiD, Ulf HerrmannORCiD, Cristiano José Teixeira BouraORCiD, Mark Schmitz, Hans Gielen, Yibekal Gedle, Jürgen Dersch |
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| DOI: | https://doi.org/10.1063/5.0086268 |
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| ISBN: | 978-0-7354-4195-8 |
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| ISSN: | 1551-7616 (online) |
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| ISSN: | 0094-243X (print) |
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| Titel des übergeordneten Werkes (Englisch): | SOLARPACES 2020 |
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| Verlag: | AIP conference proceedings / American Institute of Physics |
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| Verlagsort: | Melville, NY |
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| Dokumentart: | Konferenzveröffentlichung |
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| Sprache: | Englisch |
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| Erscheinungsjahr: | 2022 |
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| Datum der Publikation (Server): | 19.03.2024 |
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| Freies Schlagwort / Tag: | Concentrated solar power; Energy storage; Hybrid energy system; Photovoltaics; Solar thermal technologies |
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| Ausgabe / Heft: | 2445 / 1 |
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| Umfang: | 9 Seiten |
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| Bemerkung: | 26th International Conference on Concentrating Solar Power and Chemical Energy Systems
28 September–2 October 2020
Freiburg, Germany |
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| Link: | https://doi.org/10.1063/5.0086268 |
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| Fachbereiche und Einrichtungen: | FH Aachen / Fachbereich Energietechnik |
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| FH Aachen / Solar-Institut Jülich |
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| FH Aachen / ECSM European Center for Sustainable Mobility |
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| FH Aachen / Kommission für Forschung und Entwicklung |
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| collections: | Verlag / AIP Publishing |
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