Read the NIST license agreement, select I accept the agreement , and click Next .
In the world of thermodynamics, chemical engineering, and HVAC system design, few tools are as revered as (Reference Fluid Thermodynamic and Transport Properties). Developed by the National Institute of Standards and Technology (NIST), this software provides accurate thermophysical properties for hundreds of pure fluids and mixtures.
How to Install and Configure NIST REFPROP 9.1: A Complete Guide
A: Not natively. You can use AutoIt scripts or response files if you extract the MSI using Universal Silent Switch Finder.
: If you plan to link REFPROP with Python, MATLAB, or Excel, consider changing this path to a folder without spaces or strict permission locks, such as C:\REFPROP . This prevents path-parsing errors in external scripts. Click Next . Step 4: Select Components and Finish
Under , locate the variable named Path , select it, and click Edit .
Press the , type Environment Variables , and select Edit the system environment variables .
from ctypes import cdll, c_double refprop = cdll.LoadLibrary(r'C:\Program Files (x86)\REFPROP\REFPROP.dll')
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Check the box next to and click OK . A new "REFPROP" tab or custom functions will now be available in Excel. MATLAB Integration
Under , scroll down, select the Path variable, and click Edit .
EES has a built-in REFPROP call. After installation, simply write:
Ensure all fluid files ( .FLD ) and mixture files ( .MIX ) are selected. Click Next .
C:\Program Files (x86)\REFPROP\REFPROP.xla
By default, the installer will choose: C:\Program Files (x86)\REFPROP Note: While you can change this path, it is highly recommended to keep the default directory, as many third-party wrappers and API scripts look specifically for this path.
