Nist fluid properties

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Official websites use. Share sensitive information only on official, secure websites. It has proven to be an extremely useful tool used by industry, government, and academia, and it is a primary method for the dissemination of work done by the Thermophysical Properties of Fluids Group. REFPROP is a computer program, distributed through the Standard Reference Data program of NIST, that provides thermophysical properties of pure fluids and mixtures over a wide range of fluid conditions including liquid, gas, and supercritical phases. It 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. Over the years the scope of the program has grown from the original focus on refrigerants to a much broader chemical slate; for example it currently contains standards vital to the natural gas industry GERG , 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.

Nist fluid properties

Official websites use. Share sensitive information only on official, secure websites. 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. 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. 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. 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. Viscosity and thermal conductivity are modeled with either fluid-specific correlations, an ECS method, or in some cases the friction theory method. Download Metadata. Harvested from NIST. View this on Geoplatform.

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Regret for the inconvenience: we are taking measures to prevent fraudulent form submissions by extractors and page crawlers. Box , P. Received: May 20, Published: August 28, Citation: Marzouk OA. Thermo physical chemical properties of fluids using the free NIST chemistry web book database. Fluid Mech Res Int.

Official websites use. Share sensitive information only on official, secure websites. It has proven to be an extremely useful tool used by industry, government, and academia, and it is a primary method for the dissemination of work done by the Thermophysical Properties of Fluids Group. REFPROP is a computer program, distributed through the Standard Reference Data program of NIST, that provides thermophysical properties of pure fluids and mixtures over a wide range of fluid conditions including liquid, gas, and supercritical phases. It 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. Over the years the scope of the program has grown from the original focus on refrigerants to a much broader chemical slate; for example it currently contains standards vital to the natural gas industry GERG , 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. The user can select from a variety of units, flash calculations, properties, tables and plots.

Nist fluid properties

The National Institute of Standards and Technology NIST uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. NIST is an agency of the U. Department of Commerce. Neutral Thermochemical data compiled by Hussein Y. Afeefy , Joel F. Liebman , Stephen E. Stein , Donald R. Burgess, Jr. Domalski , Elizabeth D.

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Figure composed by Douglas W. Didn't find what you're looking for? Leachman, J. Disclaimers Certain commercial equipment, instruments, materials, systems, software, and trade names may be identified throughout this site in order to specify or identify technologies adequately. An example was given where the constant-pressure variations of four properties were obtained using that database. Many engineers, students, teachers, academicians, scientists, and researchers need to know intensive thermal, physical, and chemical properties of a fluid at a certain equilibrium state as determined by temperature and pressure, for example. Interested readers are encouraged to explore the capabilities of this free and user-friendly online database. Figure 11 Variation of the specific heat capacity at constant pressure with temperature for liquid water at one bar based on the data obtained from NIST Chemistry WebBook. The fluid is water in both tables. Peer Review System. Btu lb m.

Official websites use. Share sensitive information only on official, secure websites.

Such identification is not intended to imply recommendation or endorsement by NIST or any other party, nor is it intended to imply that the systems or products identified are necessarily the best available for the purpose. 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. Applications of Turbulent and Multiphase Combustion. The database provides proper references that support the data presented for each fluid. The values taken from the NIST Chemistry WebBook database agree well and sometimes are identical to those taken from the other sources. Such properties include the density, specific volume, viscosity, specific heat capacity, thermal conductivity, speed of sound, specific enthalpy, specific entropy, and surface tension. Btu hr. Properties of Water. Windom, B. An example was given where the constant-pressure variations of four properties were obtained using that database. Pub Type. By selecting external links, you will be leaving NIST webspace. Marcia Huber.