: Required to write to the C:\Program Files (x86) directory and edit system environment variables.
To activate the full version:
Follow these steps to install the core database and user interface on a Windows machine. Step 1: Run the Installer
: Required to write to the C:\Program Files (x86) directory and modify system environment variables. refprop 91 install
Navigate to your installation directory or search your Start menu for . Launch the application.
: Windows XP through Windows 11 (32-bit or 64-bit).
Ensure the link is updated. Go to the Data tab, click Edit Links , and select REFPROP.xlam . Use "Change Source" to point to the C:\Program Files\REFPROP location to ensure it is not running from a temporary folder. 4. Troubleshooting Common Install Issues : Required to write to the C:\Program Files
REFPROP 9.1 includes a built-in Excel add-in, which is created automatically during the installation process for newer versions. In the software's installation folder (e.g., C:\Program Files (x86)\REFPROP\ ), there should be a file named .
Tip: If you plan to interface REFPROP with Python, MATLAB, or Excel, consider changing this path to a simple, space-free directory like C:\REFPROP . This prevents file path syntax errors in external code. Step 4: Choose Components Ensure all components are selected, including: Core fluid files ( .FLD and .MIX ) Graphical User Interface (GUI) executable Help documentation and sample files
If you have REFPROP 10 installed, you can still use the 9.1 interface for backward compatibility. NIST provides a specific REFPRP91.XLA patch to help version 10 users run older spreadsheets without changing formula syntax. Navigate to your installation directory or search your
Navigate to the tab and click Environment Variables .
Follow these steps to install the core REFPROP 9.1 application and its graphical user interface (GUI) on a Windows machine. Step 1: Run the Installer Locate your REFPROP 9.1 installation files. Right-click on SETUP.EXE and select . If prompted by User Account Control (UAC), click Yes . Step 2: Navigate the Setup Wizard Welcome Screen : Click Next to begin.