Pure and Pseudo-pure Fluid Thermophysical Property Evaluation and the Open-Source Thermophysical Property Library CoolProp

Over
the last few decades, researchers have developed a number of empirical
and theoretical models for the correlation and prediction of the thermophysical
properties of pure fluids and mixtures treated as pseudo-pure fluids.
In this paper, a survey of all the state-of-the-art formulations of
thermophysical properties is presented. The most-accurate thermodynamic properties are
obtained from multiparameter Helmholtz-energy-explicit-type formulations.
For the transport properties, a wider range of methods has been employed,
including the extended corresponding states method. All of the thermophysical
property correlations described here have been implemented into CoolProp,
an open-source thermophysical property library. This library is written
in C++, with wrappers available for the majority of programming languages
and platforms of technical interest. As of publication, 110 pure and
pseudo-pure fluids are included in the library, as well as properties
of 40 incompressible fluids and humid air. The source code for the
CoolProp library is included as an electronic annex.