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Search Publications by: Marcia L. Huber (Fed)

Displaying 276 - 300 of 333

Correlation for the Viscosity of Pentafluoroethane (R125) from the Triple Point to 500 K at Pressures up to 60 MPa.

May 5, 2006

Author(s)

Marcia L. Huber, Arno R. Laesecke

A correlation for the viscosity of pentafluorethane (R125) has been developed based on a compilation and critical assessment of the available experimental data. The correlation covers a wide range of fluid states, including the supercritical region. It is

Measurement and Correlation of the Thermal Conductivity of Pentafluoroethane (R125) from 190 K to 512 K at Pressures to 70 MPa

April 6, 2006

Author(s)

Richard A. Perkins, Marcia L. Huber

New experimental data on the thermal conductivity of pentafluoroethane (R125) are reported that allow the development of an improved wide-range correlation. These new experimental data, covering a temperature range from 190 K to 390 K and a pressure range

Standardized Equation for Hydrogen Gas Densities for Fuel Consumption Applications

April 3, 2006

Author(s)

Eric Lemmon, Marcia L. Huber, Daniel G. Friend, Carl Paulina

One of three currently recognized methods for evaluating the consumption of gaseous hydrogen fuel in vehicle applications involves the determination of the equilibrium temperature and pressure of the gas before and after usage within a storage tank of

The Vapor Pressure of Mercury

April 1, 2006

Author(s)

Marcia L. Huber, Arno D. Laesecke, Daniel G. Friend

In this report, we review the available measurements of the vapor pressure of mercury and develop a new correlation for the vapor pressure of mercury that is valid from the triple point to the critical point. The equation is a Wagner-type form where the

Generalized SAFT-DFT/DMT model for the thermodynamic, interfacial, and transport properties of associating fluids: Application for n-alkanols.

July 2, 2005

Author(s)

Sergei B. Kiselev, James F. Ely, Ilmutdin Abdulagatov, Marcia L. Huber

We have developed a ¿global¿ crossover (GC) statistical associating fluid theory (SAFT) equation of state (EOS) for associating fluids, which incorporates non-analytic scaling laws in the critical region and in the limit of low densities is transformed

Thermal conductivity correlations for minor constituent fluids in natural gas: n-Octane, n-Nonane, and n-Decane

January 1, 2005

Author(s)

Marcia L. Huber, Richard A. Perkins

Natural gas, although predominantly comprised of methane, often contains small amounts of heavier hydrocarbons that contribute to its thermodynamic and transport properties. In this manuscript, we review the current literature and present new correlations

The Refprop Database for the Thermophysical Properties of Refrigerants

September 14, 2003

Author(s)

Mark O. McLinden, Eric W. Lemmon, Marcia L. Huber

Property databases are widely used for the design and analysis of refrigeration systems. Version 7 of the NIST REFPROP Reference Fluid Thermodynamic and Transport Properties) database is described. Compared with previous versions, the database includes

NIST Standard Reference Database 23 - NIST Thermodynamic and Transport Properties REFPROP, Version 7.0

July 1, 2002

Author(s)

Eric W. Lemmon, Mark O. McLinden, Marcia L. Huber

Knowledge of the thermophysical properties is essential for the evaluation of alternative refrigerants and the design of equipment using them. The REFPROP computer database from the National Institute of Standards and Technology has been one of the more

Thermodynamic Analysis of Fuel Vapor Characteristics in an Aircraft Fuel Tank Ullage

July 1, 2002

Author(s)

Marcia L. Huber, Jiann C. Yang

As a prerequisite to a comprehensive analysis of aircraft fuel tank fire and explosion hazards, a vapor-liquid equilibrium thermodynamic analysis was developed to assess the fuel vapor behavior in an aircraft fuel tank ullage. The analysis was based on the

Modeling Bubble Points of Mixtures of Hydrofluorocarbon Refrigerants and Polyol Ester Lubricants

March 1, 2002

Author(s)

Marcia L. Huber, E W. Lemon, Daniel G. Friend

We use a Helmholtz mixing model to predict the bubble point pressures of mixtures of hysrofluorocarbon refrigerants and polyol ester (POE)-based lubricants. We have used this model successfully in the past for mixtures of refrigerants. In this work, we

Experimental Investigation of Extinguishment of Laminar Diffusion Flames By Thermal Agents

May 2, 2000

Author(s)

Rodney A. Bryant, Marcia L. Huber, William M. Pitts

As part of the National effort to identify effective replacements for halon fire suppressants, NIST has been investigating whether highly effective thermal agents are feasible. Thermal agents are defined as those that obtain their effectiveness solely by

Vapor-Liquid Equilibria for an R134a/Lubricant Mixture: Measurements and Equation-of-State Modeling

February 1, 2000

Author(s)

Marcia L. Huber, C D. Holcomb, Stephanie L. Outcalt, J. R. Elliott

We measured bubble point pressures and coexisting liquid densities for two mixtures of R-134a and a polyolester (POE) lubricant. The mass fraction of the lubricant was approximately 9% and 12%, and the temperature ranged from 280 K to 355 K (44 F to 179 F)

Transport Properties of Petroleum Fractions

January 1, 2000

Author(s)

M E. Baltatu, R A. Chong, Marcia L. Huber, Arno D. Laesecke

A corresponding-states model for the properties of petroleum fractions is presented.