Go to File > Options > Trust Center > Trust Center Settings > Trusted Locations . Add your REFPROP folder (e.g., C:\Program Files\REFPROP ) and check "Subfolders of this location are also trusted".
Are you trying to install REFPROP for a specific environment like , MATLAB , or C++ ?
Right-click the file and select to ensure the installer has permission to write to the system folders. Step 2: Follow the Installation Wizard Welcome Screen: Click "Next". License Agreement: Read and accept the license agreement. refprop 91 install
Guide to Installing NIST REFPROP 9.1 NIST REFPROP (Reference Fluid Thermodynamic and Transport Properties) version 9.1 is a widely used software for calculating the thermophysical properties of industrially important fluids and their mixtures. While it has been officially superseded by REFPROP Version 10
Later, Sarah faced a "ghost" from her installation. When she eventually upgraded to Version 10 Go to File > Options > Trust Center
REFPROP 9.1 is a reliable workhorse, but it is aging. If you encounter persistent issues, consider:
: If you no longer have your original 9.1 installer and need to reinstall, you can contact NIST support at ian.bell@nist.gov for assistance. National Institute of Standards and Technology (.gov) Are you planning to use REFPROP with a specific application like Excel, MATLAB, or Python? Answers to Frequently Asked Questions - NIST Pages Right-click the file and select to ensure the
Run-time errors like MSHFLXGD.OCX missing often mean a firewall or antivirus blocked the registration of UI components.
With careful attention to compatibility mode and environment variables, REFPROP 9.1 will continue to serve as an accurate and indispensable tool for thermodynamic calculations for years to come.
Complete Guide to Installing and Configuring REFPROP 9.1 NIST Reference Fluid Thermodynamic and Transport Properties Database (REFPROP) is the industry standard for calculating the thermophysical properties of fluids and hydrocarbon mixtures. Version 9.1 remains widely used across engineering and academic sectors due to its stability and deep integration with legacy workflows.