The program usually installs to C:\Program Files (x86)\REFPROP or C:\Program Files\REFPROP . Crucial: Avoid moving the REFPROP.DLL file to Windows system folders (like System32 ); it must remain in the application folder with its associated .FLD and .HMX fluid data files.
Later that evening, I ran a transient condensation model. The solver chewed through REFPROP lookups, interpolations, and behind-the-scenes fits, and spat out a temperature profile that matched the empirical curve I still had pinned under a magnet. I felt like a conductor whose orchestra was finally in tune. REFPROP wasn't just installed; it had become the thread joining data, model, and experiment. refprop 91 install
Point your script directly to the C:\REFPROP directory to call the DLL files. and behind-the-scenes fits