To download RefProp 9.1, visit the official NIST website ( www.nist.gov ) and navigate to the RefProp software page. Click on the "Download" button to save the installation file to your computer.
REFPROP 9.1 is designed for Windows environments (XP through Windows 10) and requires approximately 10 MB of hard disk space.
To prevent Excel from blocking the DLL, you must add the REFPROP folder as a via File > Options > Trust Center > Trust Center Settings .
Ensure all fluid files ( .FLD ) and mixture files ( .MIX ) are selected. Click Next . refprop 91 install
The official (typically named Setup_Refprop91.exe ).
Locate REFPROP.xls in your installation folder and save it as an Excel Add-In ( .xla or .xlam ) in the same directory.
While Version 10 is the current standard, remains in use for legacy compatibility and specific research workflows. The following comprehensive guide details the installation, system configuration, and common troubleshooting steps for setting up REFPROP 9.1. 1. Core Installation and System Requirements To download RefProp 9
: Run the installer executable (typically from a CD-ROM or digital download from NIST ).
Even with careful preparation, you may encounter issues. Below are some of the most frequent installation and runtime problems with REFPROP 9.1 and their solutions.
: Users can compile the 27 source files into a single project or create a .lib file for easier linking in Windows environments. Recommended compilers include Intel Fortran or gfortran . To prevent Excel from blocking the DLL, you
Download the executable installation file (usually named REFPROP91.EXE or similar). Step 2: Run the Installer Locate the downloaded installation file on your computer. Right-click the file and select .
Before beginning the installation, it is crucial to verify that your system meets the basic requirements and to take a few preparatory steps to avoid common issues. Version 9.1 is a 32-bit application, which affects where the installer will place its files on your system.
Version 9.1, released in 2013, was a major update that expanded the database to . The introduction of a 64-bit DLL significantly improved performance for complex calculations and integration with modern software like Excel and MATLAB. While newer versions exist, 9.1 remains a widely used and stable standard in many engineering and academic settings.