About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials and Chemistry for Molten Salt Systems
|
Presentation Title |
Thermal Conductivity Measurements of FLiNaK, FMgNaK, and LiCl-KCl |
Author(s) |
Troy Munro, Ryan Ruth, Brian Merritt, Benjamin Wright, Noah Cahill, Noah Cahill |
On-Site Speaker (Planned) |
Ryan Ruth |
Abstract Scope |
Of the different thermophysical properties needed to predict molten salt behavior within a reactor system, one of the most difficult properties to predict and measure is thermal conductivity (k). Because thermal conductivity determines the temperature gradient within molten salt and is necessary to determine the heat transfer coefficient between the salt and its surroundings, the current dearth of accurately measured data in the literature must be addressed. We present experimental results on the thermal conductivity of LiF-NaF-KF, NaF-KF-MgF2, and LiCl-KCl using a Modified Transient Hot Wire needle probe. Measurements were taken from the melting point of the salt to 750 °C, with uncertainties between 15-20%, thermal conductivity values between 0.49-0.85 W/m K, and a negative dk/dT that has been observed in unary salts. These results demonstrate a new capability that can measure thermal conductivity of halide salts relatively quickly (2-5 days per salt) to populate the necessary thermophysical property databases. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Nuclear Materials, Other |