NIST REFPROP 9: The Industry Standard for Fluid Properties (Reference Fluid Thermodynamic and Transport Properties) is a specialized software program developed by the National Institute of Standards and Technology (NIST) to predict the thermophysical properties of industrially important fluids and their mixtures. While newer versions like REFPROP 10.0 have since been released, version 9.0 remains a cornerstone in engineering and research due to its stability, extensive fluid library, and high-accuracy models. Core Capabilities and Features
REFPROP 9 is a critical tool across multiple high-stakes industries: ResearchGate nist refprop 9
It calculates a vast range of data, including: Thermodynamic: Density, enthalpy, entropy, heat capacity ( ), speed of sound, and vapor pressure. Transport: Viscosity and thermal conductivity. NIST REFPROP 9: The Industry Standard for Fluid
Used for specific international standard equations, such as R-123. Transport: Viscosity and thermal conductivity
This is the primary model for most pure fluids, allowing for the computation of all equilibrium properties.
Used for complex mixture calculations to account for departures from ideal mixing. Engineering and Research Applications