Refprop 91 Install ((exclusive))

Installing NIST REFPROP 9.1 requires running the installer with administrative privileges and maintaining the default file structure to ensure functionality. Key steps include establishing trusted locations in Excel, enabling the REFPRP91.XLA add-in, and setting environment variables for proper integration. Read the full installation and linking guide at NIST. Linking REFPROP with Other Applications

In REFPROP 9.1, one of the most useful installation features is the automatic Excel Add-In setup. After a successful installation, the installer places REFPROP.xla (or .xlam) in the installation folder and can register it with Excel. This allows you to: refprop 91 install

REFPROP 9.1 Installation Guide: A Comprehensive Overview Installing NIST REFPROP 9

Python Integration (via CoolProp or ctREFPROP)

While REFPROP 9.1 predates widespread Python support, you can still call its DLL using ctypes: Default Path: By default, the installer often suggests

• Default Path: By default, the installer often suggests C:\Program Files (x86)\REFPROP. This is the recommended location.
• Important Note for Legacy Users: If you are updating from a previous version (like 8.0), the path might default to C:\REFPROP. It is generally safer to install 9.1 in the Program Files directory to avoid file permission conflicts, though advanced users may prefer a root directory for easier access to fluid files.

1. After installation, navigate to C:\Program Files (x86)\REFPROP.
2. Locate and run REFPROP.exe once. If it opens without error, the path is set.
3. If you see “Error: Fluid files not found”, do the following:

   The installation of REFPROP 9.1 (Reference Fluid Properties) follows a specific process depending on whether you are using the standalone program or integrating it with Microsoft Excel. Core Installation Steps

   Integrating REFPROP 9.1 with Excel is one of its most common uses, allowing you to use thermodynamic functions directly in spreadsheets. Trusted Locations: