Do not do it. The security risks—malware, data theft, ransomware—far outweigh any convenience benefit. Legitimate REFPROP licenses are reasonably priced, and the peace of mind that comes with legal, malware-free software is invaluable.
The story highlights the specific practical advantages of having a portable version of Refprop 9.0 for engineers, researchers, and field technicians:
While the standard installation ties the software to a specific desktop computer, creating a version unlocks the ability to run these critical calculations directly from a USB flash drive or cloud folder without formal installation. What is REFPROP 9.0? refprop 9 0 portable
Highly reliable algorithms for calculating mixture properties, including VLE (Vapor-Liquid Equilibrium) data.
NIST does offer a free, limited version called . This is a sample version of the full REFPROP program intended as a teaching tool for introducing thermodynamics to students. REFPROP Mini contains a limited number of pure fluids including water, CO₂, R134a, nitrogen, methane, propane, hydrogen, and dodecane. It also allows mixture calculations (nitrogen with methane) for teaching vapor-liquid equilibrium. Do not do it
If Excel throws a path error, use the "Find REFPROP" macro function within the add-in to point directly to your portable refprop.dll or refprop64.dll . Python and MATLAB Integration
After successful installation, simply copy the entire REFPROP folder to a USB drive. For example: The story highlights the specific practical advantages of
Modifications to REFPROP's calculation engines could produce inaccurate results. In engineering applications, incorrect property data can lead to: