Refprop 91 Install Access

Before executing the installation file, ensure you have the following administrative requirements and files ready:

Many users utilize REFPROP as a backend for Excel or MATLAB.

REFPROP (Reference Properties) is a comprehensive thermodynamic property database developed by the National Institute of Standards and Technology (NIST). REFPROP 91 is the latest version of this software, which provides accurate and reliable thermophysical property data for a wide range of pure fluids and mixtures. This write-up provides a detailed overview of the REFPROP 91 installation process and its key features. refprop 91 install

Tip : If you plan to interface REFPROP heavily with third-party tools like Python or MATLAB, consider changing this path to a simpler, non-protected directory like C:\REFPROP . This avoids Windows permission issues later.

Locate the Setup.exe file. Right-click and select If User Account Control (UAC) prompts you, click "Yes." Before executing the installation file, ensure you have

If the Excel functions don't work, go to Trust Center > Trust Center Settings > Macro Settings and ensure "Enable all macros" (or "Disable with notification") is selected.

If you plan on using REFPROP frequently with Python, MATLAB, or Excel, some users prefer installing it to a shorter path like C:\REFPROP to avoid issues with spaces in file paths during API calls. Step 4: Complete the Installation This write-up provides a detailed overview of the

REFPROP is commercial software. Unlike modern versions that utilize an online license manager, REFPROP 91 typically relies on a physical hardware key (dongle) or a specific license file (often named license.key or similar) placed in the installation directory.

If you no longer have your serial or license file, unfortunately, you cannot complete the installation. Contact NIST’s REFPROP support, but note they may not support version 9.1 in 2025.