, many researchers and engineers continue to use version 9.1 for consistency with older projects. System Requirements
To use REFPROP 9.1 in MATLAB, you need a wrapper file (often provided in the MATLAB subfolder of the installation). In MATLAB, use addpath('C:\Program Files (x86)\REFPROP') . Use the refpropm.m function to call properties.
REFPROP is a commercial product. You must have the REFPROP91.EXE setup file or the physical media purchased from NIST. 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NIST no longer officially supports Version 9.1, as it has been superseded by Version 10 and Version 11 (REFPROP 2024).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.
Purchase or download the installer through the official NIST Standard Reference Data Program. Ensure you have your specific license key ready. , many researchers and engineers continue to use version 9
first. If you can calculate a simple saturation table for a common fluid like Nitrogen, the underlying fluid files (.FLD) and mixture files (.MIX) are correctly placed. Are you planning to use REFPROP primarily through the Excel Add-in or via a programming language like
: Execute the file and follow the on-screen prompts. The default installation path is usually C:\Program Files\REFPROP Use the refpropm
In the System Properties window, click the button at the bottom.
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.
This happens if the program doesn't know where the /fluids folder is. Go to the REFPROP GUI, select Options > Paths , and ensure the path points to your installation folder.
You need the official setup file (typically RP91.EXE or a custom installer provided via your organization's NIST site license).