The latest version of REFPROP is version 10, which was released in 2018. However, some users may still be using version 9.0-HS, which was released in 2010. This version includes high-speed routines that allow faster calculations of fluid properties. Version 9.0-HS also includes several enhancements and new features, such as:
A graphical user interface that allows easy access to the functions and data of REFPROP.
An Excel add-in that enables the use of REFPROP functions and data within Excel spreadsheets.
A dynamic link library (DLL) that allows the integration of REFPROP with other software programs, such as MATLAB, Python, C++, Visual Basic, etc.
More than 100 pure fluids and more than 200 predefined mixtures, covering a wide range of substances, such as hydrocarbons, refrigerants, water, air, natural gas, ammonia, helium, etc.
State-of-the-art equations of state for the thermodynamic properties of fluids, based on the Helmholtz energy functional form.
Correlations and models for the transport properties of fluids, such as viscosity, thermal conductivity, surface tension, etc.
Various calculation options and output formats, such as saturation properties, phase equilibria, critical points, thermodynamic cycles, property tables, plots, etc.
To use REFPROP version 9.0-HS, users need to purchase a license from NIST or one of its authorized distributors. The license fee is $325 for a single user or $125 for an upgrade from version 8 or earlier. Site licenses and distributor agreements are also available for multiple users or integration with other products. Users can download the software from the NIST website or receive it on a CD-ROM. Users also receive a user's guide and a technical documentation that describe the features and functions of REFPROP in detail.
REFPROP version 9.0-HS is a reliable and accurate tool for calculating fluid properties and performing thermodynamic analyses. It is widely used by researchers, engineers, students, and educators in various fields and industries. However, users should be aware that newer versions of REFPROP may have improved or revised equations and models for some fluids and mixtures. Therefore, users are encouraged to upgrade to the latest version of REFPROP to benefit from the most recent developments and enhancements in fluid property data and calculations.
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