Halide and Oxy-halide Eutectic Systems for High Performance High Temperature Heat Transfer Fluids

Technical Report · Mon Jul 30 04:00:00 EDT 2018

OSTI ID:1479661

Li, Peiwen ^[1]; Gervasio, Dominic ^[2]

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1. Univ. of Arizona, Tucson, AZ (United States); The University of Arizona
2. Univ. of Arizona, Tucson, AZ (United States)

This report presents the work of developing a high temperature heat transfer and thermal storage fluid using low-cost chlorides salts as the basic components. Eutectic mixture of two or three chlorides salts could form a molten salt that can meet the expectation of low freezing point, high boiling point, and low corrosion to high temperature metals. The report includes two parts. Part-A presents the important principles of selecting appropriate constituent chloride salts for the eutectic mixture to have desired thermophysical properties and low corrosion to high temperature metals. Some selections of salt mixtures are listed for theoretical and experimental studies. Thermal and transport properties and heat transfer of four selected mixtures of chloride salts are presented at the end of Part-A. Detailed studies to the corrosion mechanism/behavior of metals in the selected salt mixture at high temperatures are presented in Part-B. Conditioning and purification to the salts are also introduced in Part-B, which is critical to keep the selected chloride salts to have low corrosion to metals at high temperatures.

• Research Organization: Univ. of Arizona, Tucson, AZ (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Solar Thermal, Biomass Power, and Hydrogen Technologies (EE-13)
• DOE Contract Number: EE0005942
• OSTI ID: 1479661
• Report Number(s): DE-EE--0005942
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Heat transfer fluids
chloride salts
corrosion
molten salts
properties