Potentials of Thermal Energy Storage Integrated into Steam Power Plants

Michael Krüger, Selman Muslubas, Thomas Loeper, Freerk Klasing, Philipp Knödler and Christian Mielke
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Michael Krüger: German Aerospace Center (DLR), Institute of Engineering Thermodynamics, 70569 Stuttgart, Germany
Selman Muslubas: Chair of Environmental Process Engineering and Plant Design, University of Duisburg-Essen, 45141 Essen, Germany
Thomas Loeper: Siemens AG, Power and Gas Division, 91058 Erlangen, Germany
Freerk Klasing: German Aerospace Center (DLR), Institute of Engineering Thermodynamics, 51147 Köln, Germany
Philipp Knödler: German Aerospace Center (DLR), Institute of Engineering Thermodynamics, 70569 Stuttgart, Germany
Christian Mielke: Siemens AG, Power and Gas Division, 91058 Erlangen, Germany

Energies, 2020, vol. 13, issue 9, 1-13

Abstract: For conventional power plants, the integration of thermal energy storage opens up a promising opportunity to meet future technical requirements in terms of flexibility while at the same time improving cost-effectiveness. In the FLEXI- TES joint project, the flexibilization of coal-fired steam power plants by integrating thermal energy storage (TES) into the power plant process is being investigated. In the concept phase at the beginning of the research project, various storage integration concepts were developed and evaluated. Finally, three lead concepts with different storage technologies and integration points in the power plant were identified. By means of stationary system simulations, the changes of net power output during charging and discharging as well as different storage efficiencies were calculated. Depending on the concept and the operating strategy, a reduction of the minimum load by up to 4% of the net capacity during charging and a load increase by up to 5% of the net capacity during discharging are possible. Storage efficiencies of up to 80% can be achieved.

Keywords: coal power plants; TES; thermal energy storage (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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