About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials and Chemistry for Molten Salt Systems
|
Presentation Title |
Determination of Fluoride Molten Salt Thermal Diffusivity and Sound Speed via Transient Grating Spectroscopy |
Author(s) |
Sean G. Robertson, Michael P. Short |
On-Site Speaker (Planned) |
Sean G. Robertson |
Abstract Scope |
Accurate knowledge of molten salt thermophysical properties is critical to optimize the safety and efficiency of molten salt-based energy applications. For molten fluorides, currently of high interest for fission and fusion reactors, data regarding these properties are either non-existent or poor. Thermal diffusivity and sound speed in particular play important roles in the modeling of a reactor’s steady-state and transient scenarios. Transient Grating Spectroscopy offers a potential means of determining both thermal diffusivity and sound speed to a high degree of accuracy. To facilitate this technique, an optically transparent fluoride salt-compatible setup has been designed and tested. Demonstration of system capabilities has been achieved through the acquisition of sound speed and thermal diffusivity in lithium chloride, showing excellent agreement with literature data. Initial measurements in fluorides stand in contrast to thermal diffusivity values obtained from other techniques, highlighting potential uncertainty in both the temperature coefficient and magnitude of the property. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, High-Temperature Materials, |