Refprop 91 Install -

The installation of (Reference Fluid Properties) follows a specific process depending on whether you are using the standalone program or integrating it with Microsoft Excel. Core Installation Steps

One of the most common ways to use REFPROP 9.1 is through its Excel Add-in. Locate Add-in Files REFPRP91.XLA REFPROP.xlam is in your main installation folder. Add Trusted Location In Excel, go to

This guide applies to REFPROP Version 9.1 (circa 2013). For the latest updates, please visit the official NIST REFPROP website.

Comprehensive Guide to Installing NIST REFPROP 9.1 NIST Reference Fluid Thermodynamic and Transport Properties Database () is the gold standard for engineers and scientists needing accurate thermophysical properties of fluids, including liquid, gas, and supercritical phases. REFPROP 9.1 is a widely used version known for its robustness, particularly when integrating with Excel, MATLAB, or other simulation tools. refprop 91 install

Windows 7, 8, 10, or 11 (32-bit or 64-bit). Storage: Approximately 50 MB of free disk space.

echo %REFPROP_PATH%

Some older installers trigger false positives in modern antivirus software (e.g., Windows Defender, McAfee). The installer uses self-extracting archives that may be flagged as suspicious. Disable real-time protection just for the installation duration, then re-enable it afterward. The installation of (Reference Fluid Properties) follows a

One of REFPROP's greatest strengths is its ability to be integrated into other programs via its (Dynamic Link Library). For version 9.1 to be compatible with 64-bit applications (like a 64-bit version of MATLAB), the file REFPRP64.dll must be present in your installation directory. This file provides the required 64-bit interface. Once this is in place, you can connect REFPROP to:

RefProp 9.1 provides a user-friendly interface for calculating thermophysical properties of fluids. To use RefProp 9.1:

Click the button at the bottom right.

For engineers and researchers, running property calculations in Excel is far more efficient than using the standalone REFPROP interface. The installer’s ability to saves hours of troubleshooting path variables or compatibility issues (especially on 32-bit vs 64-bit Office).

: Missing Visual Basic runtime components on newer Windows versions. Solution : Download the VB6 runtime library from Microsoft (if still available) or copy MSCOMCTL.OCX from a working older PC. Then run: