FluidProp 3.0 Basic
FluidProp Basic is the free version of FluidProp. With more than 1.000 downloads per year, it is probably one of the most popular software packages for thermodynamic calculations.
For most users, the Basic version is sufficient, but various add-ons are available for modeling more challenging situations. For complete information about FluidProp, check out the FluidProp main page.
FluidProp 3.0 Basic offers the following thermodynamic models:
GasMix implements the ideal gas model for fluids and mixtures. It is very fast, but obviously has all the limitations of the ideal gas model: it cannot compute properties for liquids and cannot deal with phase changes. It can be used to model any mixture, but obviously with limited accuracy as the interaction between the consituents are not taken into account.
IF97 (Industrial Formulation) calculates the thermodynamic and transport properties of water and steam according to International Association for the Properties of Water and Steam (IAPWS). It is the reference calculation for industrial applications of water and steam.
FreeStanMix implements the PRSV equation of state, which is one of the most accurate cubic equations of state to predict the properties of non-ideal gases and fluids. In particular it gives good results for the estimation of saturation properties. It is particularly useful for fluids for which RefProp is not available, as it requires only a single parameter to model a fluid. Also, it is faster than RefProp. A more accurate version of FreeStanMix is available in the StanMix add-on.
For mixtures, FreeStanMix uses the Wong and Sandler mixing rules which are suitable for the modeling of highly non-ideal mixtures.
One of the nice properties of the FreeStanMix model is that we can add extra fluids to those that are already supported relatively easily. So, even if your particular fluid is not yet supported, it will not cost you much to get it in the library.
TPSI implements accurate thermodynamic models for a number of fluids as described in: Reynolds, W.C., Thermodynamic properties in S.I., Department of Mechanical Engineering - Stanford University, Stanford, CA, 1979.
The fluids that are available in FluidProp Basic are listed in fluids_overview.pdf.