Heat transfer measurements in a forced convection loop with two molten-fluoride salts: LiF--BeF/sub 2/--ThF/sub 2/--UF/sub 4/ and eutectic NaBF/sub 4/--NaF
Heat transfer coefficients were determined experimentally for two molten-fluoride salts (LiF-BeF/sub 2/-ThF/sub 2/-UF/sub 4/ (72-16-12-0.3 mole %) and NaBF/sub 4/-NaF (92-8 mole %) proposed as the fuel salt and coolant salt, respectively, for molten-salt breeder reactors. Information was obtained over a wide range of variables, with salt flowing through 12.7-mm-OD (0.5-in.) Hastelloy N tubing in a forced convection loop (FCL-2b). Satisfactory agreement with the empirical Sieder-Tate correlation was obtained in the fully developed turbulent region at Reynolds moduli above 15,000 and with a modified Hausen equation in the extended transition region (Re approx.2100-15,000). Insufficient data were obtained in the laminar region to allow any conclusions to be drawn. These results indicate that the proposed salts behave as normal heat transfer fluids with an extended transition region.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 7143311
- Report Number(s):
- ORNL/TM-5335; TRN: 77-000119
- Country of Publication:
- United States
- Language:
- English
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MOLTEN SALT FUELS
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HEAT TRANSFER
LITHIUM FLUORIDES
REACTOR COOLING SYSTEMS
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HALIDES
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LIQUID FUELS
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LITHIUM HALIDES
NUCLEAR FUELS
PHYSICAL PROPERTIES
REACTOR COMPONENTS
REACTOR MATERIALS
REACTORS
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