Refprop 9.1 !!top!! -

: Calculation of 49 thermophysical properties for 100+ pure substances and 145+ mixtures. Phase Diagrams : Automated generation of T-s, P-h, and T-p diagrams. Advanced Models : Implementation of the model for natural gas and the model for natural gas calculations. Current Status Please note that Version 9.1 has been superseded by Version 10.0

In the world of thermodynamics, chemical engineering, and HVAC&R (Heating, Ventilation, Air Conditioning, and Refrigeration), precision is not merely a goal—it is a necessity. Designing a heat exchanger, simulating a Rankine cycle, or developing a new refrigerant blend requires absolute confidence in the fluid properties you are using. For decades, the National Institute of Standards and Technology (NIST) has provided the answer to this need: . refprop 9.1

While newer versions offer additional fluids and a modern interface, the 9.1 release represents the maturation of computational thermodynamics—a tool that, even years after its release, remains an indispensable part of the engineer’s toolkit. : Calculation of 49 thermophysical properties for 100+

High, with some areas needing clarity, completeness, and format standardization. Current Status Please note that Version 9

is a sophisticated computer program developed by the National Institute of Standards and Technology (NIST) to calculate the thermophysical and transport properties of industrially significant fluids and their mixtures. Standing for "REFerence fluid PROPerties," this version was released in 2013 as a significant update to the NIST Standard Reference Database 23. Key Features of REFPROP 9.1