Refprop 91 Install _verified_ [8K 2025]

Before running the installer, ensure your system meets the following criteria:

At the bottom of the window, set the "Manage" dropdown to and click Go . Click Browse and navigate to your REFPROP directory.

Click and paste your installation path (e.g., C:\Program Files (x86)\REFPROP ). Click OK on all windows. 4. Integrating with Third-Party Software Excel Integration Open Excel and go to File > Options > Add-ins . At the bottom, select Excel Add-ins and click Go . Click Browse and navigate to your REFPROP folder. Select REFPROP.xla (for older Excel) or REFPROP.xlam . refprop 91 install

Press the , type Environment Variables , and select Edit the system environment variables .

The RPprefix environment variable instructs any program (like Excel or MATLAB) where to find the REFPROP core files (FLUIDS, MIXTURES folders). An incorrectly set RPprefix is a primary reason why interfaces fail to locate property files. Before running the installer, ensure your system meets

If you are looking to enable the REFPROP features within Excel, follow these steps provided by the NIST REFPROP-wrappers GitHub :

: REFPROP must be able to find its fluid and mixture files at runtime. For cross-platform or complex setups, CoolProp can be used as an interface to help REFPROP locate these files more reliably. Click OK on all windows

NIST no longer officially supports Version 9.1, as it has been superseded by Version 10 and Version 11 (REFPROP 2024).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.

NIST REFPROP 9.1 remains a widely used and highly capable tool for thermophysical property calculations in a variety of engineering and scientific fields. Its high accuracy, extensive fluid database, and ability to be integrated with other software like Excel and MATLAB make it invaluable. While the installation process for version 9.1 is straightforward, success hinges on careful pre-installation cleanup of old versions, correct post-installation configuration of the RPprefix environment variable, and knowing how to resolve common issues like leftover DLLs or registry errors. By following this guide, you can ensure a stable and functional installation of REFPROP 9.1, allowing you to leverage its powerful property prediction capabilities for your own projects and analyses.

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

Copy the refpropm.m file from the scripts folder in your REFPROP directory to your MATLAB work folder. You will also need to ensure the REFPROP.DLL is accessible in the system path. Python (CoolProp Wrapper)