| Feature | REFPROP 8 | REFPROP 9 | |--------|-----------|-----------| | Fluids | ~105 | 120+ | | Mixture model | Mostly mixing rules | GERG-2008 added | | GUI | Basic | Improved interface | | HFOs | Few | R1234yf, R1234ze(E) | | Transport props | Limited | Expanded models | | 64-bit support | No | Yes |
Liquid nitrogen, helium, argon, oxygen, and hydrogen. nist refprop 9
, a small team of scientists and coders was finishing what would become a cornerstone of modern industrial engineering: REFPROP 9.0 | Feature | REFPROP 8 | REFPROP 9
The exceptional accuracy of NIST REFPROP 9 relies on its implementation of state-of-the-art mathematical models, primarily highly sophisticated . Helmholtz Energy Formulations Thermodynamic Models and Accuracy
To operate the program, a personal computer running was required. The installation itself was compact, requiring only approximately 10 MB of available hard disk space .
REFPROP 9 models natural gas mixtures, liquefied natural gas (LNG) composition, and hydrocarbon separation processes. It provides the precise phase behavior data needed to prevent hydrate formation and optimize pipelines. Thermodynamic Models and Accuracy