Gradient controlled startup procedure of a molten-salt power-to-heat energy storage plant based on dynamic process simulation
- The integration of high temperature thermal energy storages into existing conventional power plants can help to reduce the CO2 emissions of those plants and lead to lower capital expenditures for building energy storage systems, due to the use of synergy effects [1]. One possibility to implement that, is a molten salt storage system with a powerful power-to-heat unit. This paper presents two possible control concepts for the startup of the charging system of such a facility. The procedures are implemented in a detailed dynamic process model. The performance and safety regarding the film temperatures at heat transmitting surfaces are investigated in the process simulations. To improve the accuracy in predicting the film temperatures, CFD simulations of the electrical heater are carried out and the results are merged with the dynamic model. The results show that both investigated control concepts are safe regarding the temperature limits. The gradient controlled startup performed better than the temperature-controlled startup. Nevertheless, there are several uncertainties that need to be investigated further.
| Author: | Jonas SchulteORCiD, Christian Schwager, Kareem Noureldin, Martin May, Cristiano José Teixeira BouraORCiD, Ulf HerrmannORCiD |
|---|---|
| DOI: | https://doi.org/10.1063/5.0148741 |
| ISBN: | 978-0-7354-4623-6 |
| ISSN: | 1551-7616 (online) |
| ISSN: | 0094-243X (print) |
| Parent Title (English): | SolarPACES: Solar Power & Chemical Energy Systems |
| Publisher: | AIP conference proceedings / American Institute of Physics |
| Place of publication: | Melville, NY |
| Document Type: | Conference Proceeding |
| Language: | English |
| Year of Completion: | 2023 |
| Date of the Publication (Server): | 2024/03/15 |
| Tag: | Associated liquids; Energy storage; Power plants |
| Issue: | 2815 / 1 |
| Length: | 9 Seiten |
| Note: | 27th International Conference on Concentrating Solar Power and Chemical Energy Systems 27 September–1 October 2021 Online |
| Link: | https://doi.org/10.1063/5.0148741 |
| Institutes: | FH Aachen / Fachbereich Energietechnik |
| FH Aachen / Solar-Institut Jülich | |
| FH Aachen / ECSM European Center for Sustainable Mobility | |
| FH Aachen / Kommission für Forschung und Entwicklung | |
| collections: | Verlag / AIP Publishing |
