Refprop 91 Install High Quality · Certified & Free

To allow external programs like Python, MATLAB, or C++ to access the REFPROP dynamic link library ( refprop.dll ), you must add the installation path to your system's Environment Variables.

Windows 98, 2000, XP, Vista, 7, 8, or 10 (both 32-bit and 64-bit are supported). Storage: At least 10.0 MB of available hard disk space.

You have completed the – but does it work? Run these checks:

The real test came when Sarah tried to link REFPROP to Excel. She knew this was no simple task—it required the precision of a master builder. The Add-In: She located the REFPROP.xlam REFPRP91.XLA

How to Install and Configure NIST REFPROP 9.1: A Complete Guide refprop 91 install

This comprehensive guide covers the full installation process for REFPROP 9.1, database configuration, and integration with third-party software like MATLAB, Python, and Excel. 1. Prerequisites and System Requirements

Installing is a straightforward process, but it requires careful adherence to steps to ensure all DLL files, fluids, and mixtures function correctly within your thermodynamic modeling environments (e.g., Excel, MATLAB, Python).

Complete Guide to Installing and Configuring REFPROP 9.1 NIST Reference Fluid Thermodynamic and Transport Properties Database (REFPROP) is the industry standard for calculating the thermophysical properties of fluids and hydrocarbon mixtures. Version 9.1 remains widely used across engineering and academic sectors due to its stability and deep integration with legacy workflows.

: Permissions issue with Windows Registry. Solution : Run the installer under the hidden Administrator account. Enable it via: To allow external programs like Python, MATLAB, or

: Read through the NIST end-user license agreement, select I Accept , and click Next .

[rho, h, s] = refpropm('DH','T',300,'P',101.325,'water');

Before beginning the installation, ensure your system meets the following requirements:

The key to a successful upgrade is adhering to the "Pre-Installation" procedure. Uninstall the old version completely before installing the new one. If you have already upgraded without uninstalling, the solution is to perform a clean uninstall of the new version, fully clean your system as described in the pre-installation section, and then reinstall the new version. You have completed the – but does it work

Open Microsoft Excel (2007, 2010, 2013, 2016, or 2019). Go to File > Options > Add-ins . Look for “NIST REFPROP Add-in” under Active Application Add-ins. If not listed, manually load it via Browse and navigate to:

Execute the nist2391.exe or Setup.exe file from your installation source.

REFPROP 9.1 is a reliable workhorse, but it is aging. If you encounter persistent issues, consider: