Refprop 91 Install <Validated × CHECKLIST>

Ensure that both the fluid data files ( .fld ) and mixture files ( .mix ) are checked for installation.

REFPROP's true utility comes from its API hooks into programming languages and spreadsheet software. Here is how to configure the most common integrations. 1. Microsoft Excel Integration

To call REFPROP from external programming environments without explicitly hardcoding file paths, you must add REFPROP to your Windows System Path.

[Pressure, Density] = refpropm('PD', 'T', 300, 'Q', 0, 'Water'); Use code with caution. Microsoft Excel Integration Open Excel and navigate to -> Options -> Add-ins .

: Ensure the box for Refprp91 is checked in the list and click OK . refprop 91 install

Go to File > Options > Trust Center > Trust Center Settings > Trusted Locations . Click Add new location and add the main C:\Program Files\REFPROP folder.

If you are setting this up for a university or work environment, you may also look into "Mini-Refprop" versions. If you'd like, I can:

Solution: This happens when the software calling the DLL cannot find the .FLD files. Ensure your RPPREFIX environment variable is accurately set to the directory containing the FLUIDS folder.

The true power of REFPROP 9.1 lies in its use as a calculation engine for other programs. The installer automatically places the necessary files here: Ensure that both the fluid data files (

REFPROP 9.1 Install Guide: Comprehensive Setup and Configuration

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

Note: Even on 64-bit Windows, REFPROP 9.1 installs to the Program Files (x86) folder because it is a 32-bit application.

Any specific you are encountering during setup Share public link Microsoft Excel Integration Open Excel and navigate to

The installer will place a file named REFPROP.xla or REFPROP.xlam in the REFPROP directory. 3. Post-Installation: Configuring REFPROP

NIST no longer officially supports Version 9.1, as it has been superseded by Version 10 and Version 11 (REFPROP 2024). Users are encouraged to upgrade to the latest version to ensure compatibility with the newest fluid models and Windows security updates.

If using the CAPE-OPEN interface or certain COM objects, you may need to manually register the DLL using regsvr32.exe refpropco.dll in a command prompt. 3. Integrating with Excel