Nist fluid properties

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

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.

Nist fluid properties

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. DOI: Download PDF. 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. Such properties include the density, specific volume, viscosity, specific heat capacity, thermal conductivity, speed of sound, specific enthalpy, specific entropy, and surface tension. The database is available online free-of-charge and does not require registration for access. Its use is simple, and it offers the user multiple options for the unit to be used for each individual property. Comparisons with two sources support the correctness of the database. Fluids gases and liquids are encountered heavily in different specializations of engineering and science. Engineers and researchers may frequently need an easy access to a reliable and rich database of fluid properties at a wide range of conditions during their work.

Properties of Water.

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.

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.

Nist fluid properties

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.

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Richardson, I. Fluid Mechanics Research International Journal. Civil Jet Aircraft Design. The database is available online free-of-charge and does not require registration for access. Created April 22, , Updated June 2, Official websites use. The most recent release, version 9. Reference The user can select from a variety of units, flash calculations, properties, tables and plots. Richter, M. Share Facebook. If there is no sharp discontinuity in density, all data in the table refer to the supercritical region i. Kazakov, A. Example uses are the design or modification of plumbing systems, ventilation or air-conditioning systems, structures subject to wind loads, plasma flows, heat rejection methods, heat exchanges, and various chemical processes.

Official websites use.

Version 9. Public: This dataset is intended for public access and use. DOI: The database provides proper references that support the data presented for each fluid. Gao, K. Data 60 12 : , Comparisons with two sources support the correctness of the database. Harvested from NIST. It is important to know the thermophysical properties, including the location of the phase boundary dew-point line of carbon dioxide and its mixtures. Official websites use. Fluids gases and liquids are encountered heavily in different specializations of engineering and science.