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König-Haagen, Andreas ; Höhlein, Stephan ; Brüggemann, Dieter:
Detailed exergetic analysis of a packed bed thermal energy storage unit in combination with an Organic Rankine Cycle.
In: Applied Thermal Engineering.
Bd. 165
(2020)
.
- 114583.
ISSN 1359-4311
DOI: https://doi.org/10.1016/j.applthermaleng.2019.114583
Abstract
Thermal energy storage systems (TESS) can reduce or overcome the issues that appear when an Organic Rankine Cycle (ORC) is adopted to a fluctuating heat source. However, detailed exergetic studies about the optimization potential and the influence of the TESS on the overall system are still missing for this application and TESS in systems in general. Therefore, in this work a detailed exergetic evaluation considering the influence of physical aspects on the exergetic efficiencies of components and the overall system is numerically performed for a packed bed TESS in combination with an ORC. For the chosen boundary conditions, the overall pressure drop and the heat resistance from the heat transfer fluid (HTF) to the particle have the highest influence on the overall exergetic efficiency. By optimizing the parameters of the storage unit by means of a downhill-simplex method, the overall exergetic efficiency can be increased from 36 to 43 and the influence of the physical aspects is much lower and more balanced.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | Packed bed thermal energy storage; Organic Rankine Cycle; Exergetic analysis |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Technische Thermodynamik und Transportprozesse Profilfelder > Emerging Fields > Energieforschung und Energietechnologie Forschungseinrichtungen > Forschungsstellen > Zentrum für Energietechnik - ZET Fakultäten Fakultäten > Fakultät für Ingenieurwissenschaften Profilfelder Profilfelder > Emerging Fields Forschungseinrichtungen Forschungseinrichtungen > Forschungsstellen |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 24 Sep 2020 07:24 |
| Letzte Änderung: | 12 Jul 2023 07:43 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/57398 |