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. 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.

The references should be consulted for information on the uncertainties and the reference states for E, H, and S. Nist fluid properties These tables give thermodynamic and transport properties of a variety of fluids, as generated from the equations of state presented in the references below. Data, ,

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.

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.

Nist fluid properties

The resources presented on this website are part of the output from the NIST Cryogenic Technologies Group that existed as a group from to Some limited activities continue today. The activities are divided into four areas: Education. Publications and short courses about cryogenics and its applications for use by the public and professionals.

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Data, 44, No. A specific example for using the database is provided for liquid-water at an ambient pressure. Box , P. 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. Data, 43 1 , Richardson, I. The references should be consulted for information on the uncertainties and the reference states for E, H, and S. Share sensitive information only on official, secure websites. Mansfield, E. Standard Reference Data. Viscosity and thermal conductivity are modeled with either fluid-specific correlations, an ECS method, or in some cases the friction theory method.

Official websites use.

Data 45 1 : Viscosity and thermal conductivity are modeled with either fluid-specific correlations, an ECS method, or in some cases the friction theory method. Standard Reference Data. Public: This dataset is intended for public access and use. 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. One component of this program is called NIST Chemistry WebBook, 2 which is a rich database that offers several thermo-physical-chemical properties of fluids and other species. In teaching a course, the data in an appendix of a textbook might be sufficient to meet the need of the instructor and student. NIST was at the forefront of research on the properties of the original replacement refrigerants, and continues to lead research in properties of new low-global warming potential low-GWP fluids that address climate change. Being freely available online and well-documented increases its value. Share Facebook. Civil Jet Aircraft Design. Customers received a 3.