What is NIST REFPROP 9 14 and How to Use It?
NIST REFPROP 9 14 is a computer program that provides thermophysical properties of pure fluids and mixtures over a wide range of fluid conditions including liquid, gas, and supercritical phases. It is developed by the National Institute of Standards and Technology (NIST) and distributed through the Standard Reference Data program of NIST[^1^].
NIST REFPROP 9 14 contains critically evaluated mathematical models, with the goal of representing the properties to within the uncertainty of the underlying experimental data used in their development. These properties (such as density, vapor pressure, viscosity, enthalpy, etc.) can be used to design solutions to challenges presented by a changing climate, as well as to provide accurate thermophysical data to users in the chemical industry, the petroleum industry, and academia[^2^].
NIST REFPROP 9 14 covers a variety of industrially important fluids and fluid mixtures, including accepted standards. For example, it currently contains standards vital to the natural gas industry (GERG-2008), fluids involved in carbon capture and sequestration processes, cryogens used in space applications, widely used industrial chemicals and solvents, air, water and steam, constituents of biofuels, and constituents of surrogates for complex fluids such as diesel and jet fuels[^2^].
nist refprop 9 14
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NIST REFPROP 9 14 is supplied as an easy-to-use graphical-user-interface for Windows users, FORTRAN source code, and a DLL callable from a wide range of platforms and programming environments, such as Excel, LabVIEW, and MatLab. The user can select from a variety of units, flash calculations, properties, tables and plots. More detailed information about the program and how to obtain it can be found at https://www.nist.gov/srd/refprop[^1^].
NIST REFPROP 9 14 is an acronym for REFerence fluid PROPerties. This program calculates the thermodynamic and transport properties of industrially important fluids and their mixtures[^3^].
How to Use NIST REFPROP 9 14?
To use NIST REFPROP 9 14, you need to follow these steps:
Download and install NIST REFPROP 9 14 from https://www.nist.gov/srd/refprop. You will need a license key to activate the program.
Launch NIST REFPROP 9 14 from your desktop or start menu. You will see a main window with several tabs: Fluids, Mixture Models, Units/Options/Plotting/Tables/Equations/References/About.
Select the Fluids tab to choose the fluids or mixtures you want to work with. You can select from a list of predefined mixtures or create your own custom mixtures by specifying the composition of each component.
Select the Mixture Models tab to choose the models for calculating the mixture properties. You can select from a list of predefined models or create your own custom models by specifying the parameters of each model.
Select the Units/Options tab to choose the units for input and output variables. You can also change other options such as reference states, numerical methods, display formats, etc.
Select the Plotting/Tables tab to generate plots or tables of various properties as functions of other variables. You can choose from a list of predefined plots or tables or create your own custom plots or tables by specifying the variables and ranges.
Select the Equations tab to view or edit the equations of state and transport models used by NIST REFPROP 9 14. You can also view or edit the coefficients and constants for each equation.
Select the References tab to view or edit the references for each fluid or mixture. You can also add your own references or notes.
Select the About tab to view information about NIST REFPROP 9 14 such as version number, license key, contact details, etc.
NIST REFPROP 9 14 is a powerful tool that can help you with your thermophysical property calculations. It is widely used by industry, government, and academia for various applications involving fluids and fluid mixtures. If you have any questions or 0efd9a6b88