Reactor Coolant Properties: molten_salt_FLiBe
Thermophysical properties of nuclear reactor coolants at operating temperatures and pressures. Covers light water (H2O) for PWR at 15.5 MPa (270-340°C) and BWR at 7 MPa (270-280°C), heavy water D2O for CANDU at 10 MPa (250-310°C), helium gas for HTGR/VHTR at 7 MPa (250-750°C), liquid sodium for SFR/LMFBR at near-atmospheric pressure (200-550°C), and molten salt FLiBe (2LiF-BeF2) for MSR (500-700°C). Properties: density, dynamic viscosity, thermal conductivity, specific heat, Prandtl number. Distinct from standard steam tables which do not cover D2O, sodium, helium, or FLiBe at reactor conditions.
| coolant type | temperature C | density kg m3 (kg/m3) | dynamic viscosity uPa s (uPa*s) | notes | prandtl number (dimensionless) | pressure MPa (MPa) | reactor type | specific heat J kgK (J/kgK) | thermal conductivity W mK (W/mK) |
|---|---|---|---|---|---|---|---|---|---|
| molten_salt_FLiBe | 500 | 2,017 | 9,860 | FLiBe (2LiF-BeF2 67:33 mol%) MSR coolant; Tmelt≈459°C; rho=2413-0.488*T(K) | 21.6 | 0.1 | MSR | 2,415 | 1.1 |
| molten_salt_FLiBe | 550 | 1,993 | 6,950 | FLiBe at typical MSR primary circuit; viscosity Arrhenius: exp(3755/T) | 15.2 | 0.1 | MSR | 2,410 | 1.1 |
| molten_salt_FLiBe | 600 | 1,968 | 5,100 | Mid-core MSR coolant; Cp≈2415 J/kgK relatively flat | 11.2 | 0.1 | MSR | 2,406 | 1.1 |
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