Ideal for selecting new refrigerants (e.g., HFOs) and analyzing cycle efficiency.

Natural gas mixtures can be calculated using the industry-standard AGA8 loyalty model.

What are you modeling (e.g., refrigeration cycle, pipeline flow)? Share public link

: Capable of calculating vapor-liquid, liquid-liquid, and solid-liquid systems.

NIST REFPROP 9 provides a comprehensive suite of tools for thermophysical property prediction across a wide range of fluid conditions, including liquid, gas, and supercritical phases.

REFPROP 9 offers a range of features that make it an indispensable tool for anyone working with thermophysical properties. Some of the key features include:

421.33 kg/m³ Viscosity: 1.87e-5 Pa·s Thermal Conductivity: 0.189 W/(m·K)

Enhanced convergence algorithms for finding phase boundaries and critical points in complex mixtures. Transitioning to REFPROP 10

NIST REFPROP 9 is a software package that provides a comprehensive database of thermophysical properties for a wide range of fluids, including refrigerants, hydrocarbons, and other industrially important substances. The database contains critically evaluated data for over 1,300 pure fluids and 2,400 mixtures, including thermodynamic properties, transport properties, and phase equilibrium data.

REFPROP 9 offers built-in tools for generating Temperature-Entropy (T-s), Pressure-Enthalpy (p-h), and phase-composition diagrams. Why Choose REFPROP 9?

REFPROP v9.0 brought substantial enhancements to the database's functionality, cementing its role in industry and academia:

In the early 2010s, deep within the labs of the National Institute of Standards and Technology (NIST)

Computes density, enthalpy, entropy, viscosity, and thermal conductivity.