The latest version of REFPROP, version 91, was a significant upgrade from its predecessors. It included new features, improved accuracy, and a more user-friendly interface. However, the software came with a hefty price tag, making it inaccessible to many individuals and organizations.
The current version (10.0 or 11.0) has more features, but 9.1 remains popular because older hardware can run it and legacy tutorials reference it. refprop 91 free
However, confusion arises because NIST offers a called REFPROP Demo . This demo is often mistaken for the full version. The latest version of REFPROP, version 91, was
, select "Excel Add-ins" from the Manage dropdown, and click Browse and Select : Navigate to your installation folder (e.g., C:\Program Files\REFPROP The current version (10
While "REFPROP 9.1 free" is a popular search term, the software remains a paid product due to the immense research cost required to maintain its accuracy. For those who cannot afford the NIST license fee, is the most professional and reliable free alternative available today.