Run-time errors like MSHFLXGD.OCX missing often mean a firewall or antivirus blocked the registration of UI components.
Create a new user environment variable named RPPrefix and set its value to your installation path (e.g., C:\Program Files\REFPROP ).
If you get an error saying a fluid file (like NITROGEN.FLD ) is missing, ensure you are running the application from the directory where the /fluids/ folder is located.
Click on in the top menu bar, select Separate Fluids , and choose a common fluid like Water . Click on Calculate -> Saturation Tables .
Before initiating the installation, ensure your system meets the necessary software and hardware criteria. Operating System Compatibility Windows 7, 8, 10, and 11 (32-bit and 64-bit architectures). Linux environments (via shared object library compilation). refprop 91 install
While still widely used, REFPROP 9.1 has been superseded by later versions (10.0 and beyond). Users should ensure they are using the correct version for their needs and be aware that updates may contain critical improvements and bug fixes.
This comprehensive guide covers the step-by-step installation process for REFPROP 9.1, environment variable configuration, and integration with popular engineering platforms like MATLAB, Python, and Excel. Prerequisites and System Requirements
Read and accept the NIST license agreement. Enter your User Name and Organization when prompted. Step 3: Choose Destination Location
To install the base version of REFPROP 9.1, you typically need the original installation media (CD-ROM) or a digital installer purchased from NIST . Run-time errors like MSHFLXGD
For 64-bit Windows, the default is usually: C:\Program Files (x86)\REFPROP
Microsoft Excel (optional, for using the REFPROP Excel Add-in).
: Set this variable to point to your main installation directory (e.g., C:\Program Files\REFPROP
Windows 7, 8, 10, or 11 (32-bit or 64-bit architectures). Disk Space: Approximately 300 MB of free hard drive space. Click on in the top menu bar, select
: Use the executable provided with your purchase (often via CD-ROM or digital download). Default Directory : By default, it installs to C:\Program Files (x86)\REFPROP
If you plan on using REFPROP with third-party wrappers (like Python’s
, many researchers and engineers continue to use version 9.1 for consistency with older projects. System Requirements
This guide covers system requirements, the installation procedure, common pitfalls, and validation. 1. Prerequisites and System Requirements
Always verify the standalone application is operational before attempting external software integrations.