Technical Development and Economic Evaluation of the Integration of Thermal Energy Storage in Steam Power Plants

Michael Krüger, Selman Muslubas, Eren Çam, Daniel Lehmann, Sabine Polenz, Volker Dreißigacker, Freerk Klasing and Philipp Knödler
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Michael Krüger: Institute of Engineering Thermodynamics, German Aerospace Centre (DLR), 70569 Stuttgart, Germany
Selman Muslubas: Chair of Environmental Process Engineering and Plant Design (LUAT), University of Duisburg-Essen, 45141 Essen, Germany
Eren Çam: Institute of Energy Economics at the University of Cologne (EWI), 50827 Cologne, Germany
Daniel Lehmann: STEAG Energy Services GmbH, 45128 Essen, Germany
Sabine Polenz: VGB PowerTech e.V. (VGB), 45257 Essen, Germany
Volker Dreißigacker: Institute of Engineering Thermodynamics, German Aerospace Centre (DLR), 70569 Stuttgart, Germany
Freerk Klasing: Institute of Engineering Thermodynamics, German Aerospace Centre (DLR), 51147 Cologne, Germany
Philipp Knödler: Institute of Engineering Thermodynamics, German Aerospace Centre (DLR), 70569 Stuttgart, Germany

Energies, 2022, vol. 15, issue 9, 1-34

Abstract: Grid-compliant integration of renewable energies will in future require considerable increases in flexibility in the operation of conventional power plants. The integration of thermal energy storage systems (TES) into the power plant process can create considerable improvements, for example, in the speed of load change and partial load behavior. In the case of existing plants, there are thus good prospects of upgrading for more flexible operation, which promises improvements in the energy system that can be achieved in the relatively short term. The aim of this publication is, therefore, to identify integration options for TES in coal-fired power plants which would enable the desired high flexibility potentials and, at the same time, include cost-efficient solutions. By means of an iterative approach between future scenarios of the energy market, the power plant process, and the TES component, favored configurations were developed from a wide range of integration concepts. For this purpose, thermodynamic simulation studies were performed, operating concepts were developed, economic assessments were made, design calculations were performed, and experimental investigations on different TES options were realized. The results obtained can serve as a basis for the demonstration of a promising TES technology in an existing hard coal-fired power plant.

Keywords: TES; thermal energy storage; heat storage; coal-fired power plants; power plant flexibilization (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: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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