Development of a molten salt system for thermal energy storage at elevated temperatures

Kurzfassung

This presentation is about the development of a thermal energy storage system for CSP. It describes the selection of the "salt" system’s components by a combination of a theoretical and experimental approach based on economic, ecological and technical critera. Having found the most appropriate components, the next chalenge is to mix the components in a way that the system can be used in a most efficient way, by lowering the onset of the liquidus temperature. Concerning this, two approaches will be shown: One approach is a systematic approach using high-throughput experimental methods and phase diagram fitting. This approach will be compared to an alternative experimental method which significantly reduces the experimental time and which is being used for the lower temperature range. The advantages and disadvantages of both approaches are discussed.