The NIST Reference Fluid Thermodynamic and Transport Properties Database (REFPROP) is the gold standard for engineers, researchers, and technicians working with fluids. While version 10 is the current standard, remains widely used for its accuracy and compatibility with legacy systems. The concept of a "portable" version of REFPROP 9.0 addresses the need for thermodynamic modeling software that does not require a full, registry-heavy installation, allowing for flexible use across different workstations, field laptops, or engineering tools.
In Python, using the popular wrapper libraries, you can pass the direct path string of your portable folder during initialization: refprop 9 0 portable