TY - GEN
T1 - Experimental Method for Measurement of Density and Viscosity of High Temperature Heat Transfer Fluid
AU - Chen, Jiaqi
AU - Brooks, C. S.
N1 - Publisher Copyright:
© 2023 Proceedings of the 20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2023. All rights reserved.
PY - 2023
Y1 - 2023
N2 - In Gen-IV nuclear reactors, various heat transfer fluids are being considered for high temperature application, including molten salts and liquid metals. The thermal physical properties of these heat transfer fluids have relatively large uncertainties when multiple data sources are compared. These uncertainties could come from impurities in the sample, unaccounted systematic error, instrumentation limitations, etc. In this study, the density measurement technique based on Archimedes principle is used. The buoyancy force is measured using a force sensor. The submerged volume is varied using a precision linear stage to accommodate unknown surface tension force of the sample. Verification is made with multiple pure substances at room temperature, and liquid bismuth at elevated temperature. Density of FLiNaK is measured and reported. Moreover, the viscosity measurement technique based on oscillating cup is explored. The conventional rotation measurement is simplified using image processing technique. The sample container and rotary assembly is also simplified using high temperature sealant and customized furnace. Calibration is made with multiple pure substances at room temperature, and a verification study is performed at elevated temperature with bismuth. The potential error sources are discussed as well as possible improvements to the techniques.
AB - In Gen-IV nuclear reactors, various heat transfer fluids are being considered for high temperature application, including molten salts and liquid metals. The thermal physical properties of these heat transfer fluids have relatively large uncertainties when multiple data sources are compared. These uncertainties could come from impurities in the sample, unaccounted systematic error, instrumentation limitations, etc. In this study, the density measurement technique based on Archimedes principle is used. The buoyancy force is measured using a force sensor. The submerged volume is varied using a precision linear stage to accommodate unknown surface tension force of the sample. Verification is made with multiple pure substances at room temperature, and liquid bismuth at elevated temperature. Density of FLiNaK is measured and reported. Moreover, the viscosity measurement technique based on oscillating cup is explored. The conventional rotation measurement is simplified using image processing technique. The sample container and rotary assembly is also simplified using high temperature sealant and customized furnace. Calibration is made with multiple pure substances at room temperature, and a verification study is performed at elevated temperature with bismuth. The potential error sources are discussed as well as possible improvements to the techniques.
KW - Archimedes Principle
KW - Density
KW - FLiNaK
KW - Oscillating Cup
KW - Viscosity
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U2 - 10.13182/NURETH20-40020
DO - 10.13182/NURETH20-40020
M3 - Conference contribution
AN - SCOPUS:85202943850
T3 - Proceedings of the 20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2023
SP - 1437
EP - 1450
BT - Proceedings of the 20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2023
PB - American Nuclear Society
T2 - 20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2023
Y2 - 20 August 2023 through 25 August 2023
ER -