High temperature molten salts are gaining interest for advanced energy applications, such as nuclear and thermal energy storage. Within thermal energy storage, the U. S. DOE’s Office of Energy Efficiency and Renewable Energy have invested in molten salt technology for Generation III concentrated solar power with a focus on molten chlorides. The molten chlorides have advantages over the current molten nitrate salts, including higher operating temperatures through greater chemical stability. To understand how impurities influence corrosivity, a series of molten salts were purified at various levels and contacted with metals for 100 hours at high temperatures. The results indicate salt purification is required for decreased corrosion. In this talk the purification methods will be discussed along with methods to quantify the salt composition.

Chloride molten salts in concentrated solar applications

2019 Spring National Meeting

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