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: The current industry standard is REFPROP 10.0 .
: This is a "sample" version meant for teaching. It contains only a subset of common fluids like water, CO2cap C cap O sub 2 , nitrogen, and methane. Access and Availability
REFPROP (Reference Fluid Properties) is an industry-standard computational program that calculates the thermophysical and transport properties of industrially important fluids and their mixtures. Released officially by NIST, version 9.1 builds upon decades of empirical research to deliver highly accurate data across liquid, gas, and supercritical phases. Key Capabilities of Version 9.1
It restricts mixture calculations to predefined ratios (like basic air) and lacks technical support from NIST. 2. Third-Party Wrapper Trials REFPROP | NIST refprop 91 free
Years later, Alex looked back on his experience with REFPROP 91 Free as a turning point in his career. The software had allowed him to work on cutting-edge projects, collaborate with top researchers, and publish his findings. He never forgot the generosity of thermo_guru and the team at NIST, who had made it all possible.
It only includes a few fluids (like water, nitrogen, and R134a).
T_sat = CP.PropsSI('T', 'P', 101325, 'Q', 0, 'Water') print(f"The saturation temperature of water at 101.325 kPa is T_sat - 273.15:.2f °C") : The current industry standard is REFPROP 10
Using pirated software violates corporate compliance policies and international copyright laws. Organizations face severe financial penalties and legal audits if caught using unlicensed engineering software. Legitimate Ways to Access REFPROP Data for Free
Perhaps the most popular feature, allowing you to pull density or enthalpy directly into your calculations. How to Get Started REFPROP | NIST
: It includes an Excel Add-In (XLA) that allows users to call property functions directly from spreadsheet cells. and R134a). T_sat = CP.PropsSI('T'
: Introduced a 64-bit Dynamic Link Library (DLL) allowing stable connection to external software like Excel, MATLAB, Python, and C++.
Version 9.1 (REFPROP 9.1) is a specific release that many users search for, hoping to find a "free" copy. The search term is searched thousands of times monthly by students, engineers, and hobbyists who cannot afford the commercial license.