Ensure your system path includes the REFPROP folder so MATLAB can call the underlying refprop.dll . Python Integration (via ctREFPROP or CoolProp)
You need the official installer executable (usually named REFPROP9.exe or setup files provided via NIST or your institution's software portal). 2. Step-by-Step Installation Guide Step 1: Run the Setup Executable Locate your downloaded REFPROP 9.1 installer.
Installing NIST REFPROP 9.1 requires a bit more care than a typical consumer program, primarily due to the importance of a clean uninstall of older versions. However, by following the step-by-step guide and using the troubleshooting tips, you can set up this powerful thermodynamic property database with confidence. Once installed, the 64-bit DLL enables seamless integration with your primary engineering tools like Excel and MATLAB, providing you with a world-class property calculation engine for your projects. refprop 91 install
NIST no longer officially supports Version 9.1, as it has been superseded by Version 10 and Version 11 (REFPROP 2024). Users are encouraged to upgrade to the latest version to ensure compatibility with the newest fluid models and Windows security updates.
By default, the installer targets C:\Program Files (x86)\REFPROP . It is highly recommended to keep this default path, as many third-party wrappers and API connectors search for REFPROP in this exact location. Ensure your system path includes the REFPROP folder
In Excel, go to File > Options > Trust Center > Trust Center Settings > Trusted Locations . Click Add new location and browse to your REFPROP folder (e.g., C:\Program Files\REFPROP ).
Before diving into the installation mechanics, it is worth understanding why someone would specifically seek out version 9.1 rather than newer versions (10.0, 9.2, or the current 11.0). The reasons include: Step-by-Step Installation Guide Step 1: Run the Setup
REFPROP's core engine relies on a compiled Fortran dynamic link library ( refprop.dll ). You can link this DLL to various external programming tools. Python Integration
Under , scroll down, select the Path variable, and click Edit .