Overview REFPROP (Reference Fluid Thermodynamic and Transport Properties) is an industry-standard software developed by the National Institute of Standards and Technology (NIST). Version 9.1 is a legacy release that provides accurate thermophysical property data for a wide range of fluids and mixtures. Because Version 9.1 is older than the current Windows operating systems, the installation process requires specific attention to file directories and administrative privileges to function correctly.
REFPROP 9.1 is a significant update to the REFPROP series, offering improved performance, new features, and enhanced accuracy. The software provides a comprehensive database of fluid thermodynamic properties, including equations of state, vapor-liquid equilibrium, and transport properties. REFPROP 9.1 supports over 1000 fluids, including refrigerants, hydrocarbons, and other common working fluids. refprop 91 install
Disclaimer NIST no longer officially supports Version 9.1, as it has been superseded by Version 10 and Version 11 (REFPROP 2024). Users are encouraged to upgrade to the latest version to ensure compatibility with the newest fluid models and Windows security updates. do the following:
Open Excel Settings: Go to the Developer tab and click on Excel Add-ins. offering improved performance
C:\Program Files (x86)\REFPROP.REFPROP.exe once. If it opens without error, the path is set.