The properties listed in Table 1 can be computed by FluidProp. The corresponding symbol is used to define the combination to set a thermodynamic state as an input for a method.
Table 1
Thermophysical property |
Method |
Symbol |
Default unit |
Pressure |
P |
bar | |
Temperature |
T |
°C | |
Specific volume |
v |
m3/kg | |
Density |
|
kg/m3 | |
Enthalpy |
h |
kJ/kg | |
Entropy |
s |
kJ/kg.K | |
Internal energy |
u |
kJ/kg | |
Vapor quality |
q |
kg/kg | |
Liquid phase composition |
x |
mole/mole | |
Vapor phase composition |
y |
mole/mole | |
Isochoric heat capacity |
Cv |
kJ/kg.K | |
Isobaric heat capacity |
Cp |
kJ/kg.K | |
Sound speed |
c |
m/s | |
Secondary thermodynamic property |
|
m2/s2 | |
Secondary thermodynamic property |
|
kg/m3 | |
Secondary thermodynamic property |
|
Nm4/kg2.K | |
Secondary thermodynamic property |
|
1/K | |
Secondary thermodynamic property |
|
kg2/Nm4 | |
Secondary thermodynamic property |
|
s2/m2 | |
Secondary thermodynamic property |
|
kg.K/m3 | |
Volumetric thermal expansion coefficient |
|
1/K | |
Isothermal compressibility |
|
1/bar | |
Fundamental derivative of gas dynamics |
|
- | |
Dynamic viscosity |
|
Pa.s | |
Thermal conductivity |
|
W/m.K | |
Gibss free energy |
G |
kJ/kg | |
Surface tension |
|
mN/m | |
Fugacity coefficients |
|
- |
Not all properties can be computed by all the libraries interfaced to FluidProp. Table 2 lists the available properties for each library.
Table 2
Thermophysical property |
FluidProp method |
TPSI |
FreeStanMix |
IF97 |
GasMix |
RefProp |
StanMix |
PCP-SAFT |
Pressure |
|
|
|
|
|
|
|
|
Temperature |
|
|
|
|
|
|
|
|
Specific Volume |
|
|
|
|
|
|
|
|
Density |
|
|
|
|
|
|
|
|
Enthalpy |
|
|
|
|
|
|
|
|
Entropy |
|
|
|
|
|
|
|
|
Internal Energy |
|
|
|
|
|
|
|
|
Vapor quality |
|
|
|
n/a |
|
|
|
|
Liquid phase composition |
n/a |
|
n/a |
n/a |
|
|
|
|
Vapor phase composition |
n/a |
|
n/a |
n/a |
|
|
|
|
Heat capacity at const. v |
|
|
|
|
|
|
|
|
Heat capacity at const. P |
|
|
|
|
|
|
|
|
Speed of sound |
|
|
|
|
|
|
|
|
|
|
|
n/a |
|
|
|
|
|
|
|
|
n/a |
|
|
|
|
|
|
|
|
n/a |
|
|
|
|
|
|
|
|
n/a |
|
|
|
|
|
|
|
|
n/a |
|
|
|
|
|
|
|
|
n/a |
|
|
|
|
|
|
|
|
n/a |
|
|
|
|
|
Volumetric thermal expansion coefficient |
|
|
n/a |
|
|
|
|
|
Isothermal compressibility |
|
|
n/a |
|
|
|
|
|
Fundamental derivative of gas dynamics G |
|
|
n/a |
|
|
|
|
|
Viscosity |
n/a |
n/a |
|
|
|
n/a |
n/a |
|
Thermal Conductivity |
n/a |
n/a |
|
|
|
n/a |
n/a |
|
Gibbs free energy |
|
|
|
|
|
|
|
|
Surface tension |
n/a |
n/a |
|
n/a |
|
n/a |
n/a |
|
Fugacity coefficients |
n/a |
n/a |
n/a |
n/a |
|
|
|
Legend:
n/a = not available
(1) = not available for the TPSI fluids Air and Moist. Air;