Flexibility of Power Plants through Thermal Energy Storage (FLEXI-TES)
The aim of the project “FLEXI-TES” is to increase the flexibility of coal-fired power stations via heat storage systems. The possibilities of integrating thermal energy storage (TES) in both new and existing facilities are to be investigated. The technical feasibility as well as the economic efficiency of the integration of such a concept are to be considered. In the research project P-DKW, potentials for the integration of thermal energy storage were identified. Based on this, taking into account current storage technologies, FLEXI-TES is to identify the most promising storage options from the P-DKW project and to investigate them in more detail. The aim is to create the foundations for a pre-engineering study of a power station, where the next step would be to ultimately realize it as a demonstration plant. In the research project, various storage integration concepts and TES technologies are being considered for their ability to make coal plants more flexible and how well they integrate into the overall system. In addition, an evaluation of the favored TES concepts takes place. This assessment considers both the effects on individual subsystems (turbine and steam generator) as well as on the overall power plant system and, in addition to the thermodynamic simulation models, also includes operating concepts, economic assessments, design calculations and material investigations.