![]() ![]() The contributions of Wolfgang Wagner, Roland Span, and Monika Thol can easily be seen by browsing through the fluid information. In particular, the Ruhr University in Bochum, Germany, has for many decades worked alongside us in the development of equations of state. We acknowledge our many colleagues whose property models we have taken from the literature, and without which this database would be much reduced in scope. A number of individuals from industry have contributed continuously over the last several years we are indebted to them for their help, and we thank Tobias Loew, Nik Felbab, Nicolas James, Dan Williams, Jim Pollard, and Stuart Lawson. Also of NIST are Adam Morey, Cindy McKneely, and Sherena Johnson who distribute the product for us to industry. Although there are only four authors of this work, we are very grateful to the many contributions of our NIST colleagues, including Gary Hardin, Allan Harvey, Chris Muzny, Vladimir Diky, Ala Bazyleva, and Janiel Reed who have provided support over the last several versions of REFPROP. Work never stops on the development of thermophysical properties and equations, but the last two years have been especially intense and fully dedicated to this release. REFPROP 10.0 is the culmination of several years of revisions and updates. The property formulations and fluid data files were programmed by: Viscosity and thermal conductivity are modeled with either fluid-specific correlations, an ECS method, or in some cases the friction theory method. Mixture calculations employ a model that applies mixing rules to the Helmholtz energy of the mixture components it uses a departure function to account for the departure from ideal mixing. It implements three models for the thermodynamic properties of pure fluids: equations of state explicit in Helmholtz energy, the modified Benedict-Webb-Rubin equation of state, and an extended corresponding states (ECS) model. REFPROP is based on the most accurate pure fluid and mixture models currently available. These properties can be displayed in Tables and Plots through the graphical user interface they are also accessible through spreadsheets or user-written applications accessing the REFPROP dll. This program, developed by the National Institute of Standards and Technology (NIST), calculates the thermodynamic and transport properties of industrially important fluids and their mixtures. REFPROP is an acronym for REFerence fluid PROPerties. ![]()
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