Can thermal energy storage be integrated into coal-fired steam power plants?

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.

Can steam energy be stored in molten salt and water?

Similarly, data from power plants in Germany and Austria [14, 15] show that transferring steam energy to molten salt and water can achieve storage capacities of up to 1000 MWH, much higher than the working capacity and operating time of steam energy storage.

How does main steam and reheat steam affect tpse?

Main steam and reheat steam are the energy sources for the TES system and turbine power generation, so the extraction of different flow rates of main steam (EMS) and reheat steam (ERS) significantly impacts the heat storage and release processes of TPSE.

How efficient is molten salt thermal storage in a coal-fired power plant?

Zhang et al. based on a molten salt thermal storage system integrated with multiple heat sources (high-temperature flue gas and superheated steam) in a coal-fired power plant, with a TES cycle efficiency of 85.17 % .

Should thermal energy storage be integrated with conventional power plants?

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.

What is the basic idea of a thermal energy storage system?

The basic idea is to store heat efficiently in the process at times of low thermal energy demand (charging period) and to provide it to the process at times of increased thermal energy demand (discharging period).