Publications

Displaying 151 - 175 of 177

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.

Transport Properties of Refrigerants R32, R125, R134a, and R125+R32 Mixtures in and Beyond the Critical Region

January 1, 2000

Author(s)

S B. Kiselev, Richard A. Perkins, Marcia L. Huber

A practical representation for the transport coefficients of pure refrigerants R32, R125, R134a, and R125 + R32 mixtures is presented which is valid in the vapor-liquid critical region.

Transport Properties of Refrigerants R32, R125, R134a, and R125 + R32 Mixtures In and Beyond the Critical Region

December 1, 1999

Author(s)

S B. Kiselev, Richard A. Perkins, Marcia L. Huber

Characterization and Identification of Super-Effective Thermal Fire Extinguishing Agents. First Annual Report.

October 1, 1999

Author(s)

William M. Pitts, Jiann C. Yang, Marcia L. Huber, L G. Blevins

The use of halons for fire fighting is being phased out due to their deleterious effects on stratospheric ozone. This report summarizes the first-year findings of a three-year study designed to characterize and identify super-effective thermal fire

Thermophysical Property Computer Packages from NIST of Interest to the Natural Gas Industry

July 1, 1999

Author(s)

Marcia L. Huber, Daniel G. Friend, Eric W. Lemmon

We discuss three computerized databases distributed by the Standard Reference Data (SRD) program of NIST, which are of interest to the natural gas industry.

Vapor Nucleation in a Cryogenic Fluid/Dissolved Nitrogen Mixture During Rapid Depressurization

May 1, 1999

Author(s)

J C. Yang, T G. Cleary, Marcia L. Huber, William L. Grosshandler

Characterization and Identification of Super-Effective Thermal Fire Extinguishing Agents- First Annual Report

January 1, 1999

Author(s)

William M. Pitts, Jiann C. Yang, Marcia L. Huber, L G. Blevins

Vapor Nucleation in a Cryogenic-Fluid-Dissovled-Nitrogen Mixture During Rapid Depressurization

January 1, 1999

Author(s)

Jiann C. Yang, Thomas G. Cleary, Marcia L. Huber, William L. Grosshandler

The behaviour of four cryogenic-fluid-dissolved-nitrogen mixtures inside a pressure vessel during rapid depressurization was investigated through experiment. The four fluids studied were CF3I, FC-218 (C3F8), HFC-125 (C2HF5), and CF3Br. Depressurization was

Binary Mixtures In and Beyond the Critical Region: Thermodynamic Properties

December 1, 1998

Author(s)

S B. Kiselev, James C. Rainwater, Marcia L. Huber

Transport Properties of Carbon Dioxide + Ethane and Methane + Ethane Mixtures in the Extended Critical Region

January 15, 1998

Author(s)

S B. Kiselev, Marcia L. Huber

Thermodynamic Properties of R32 + R134a and R125 + R32 Mixtures In and Beyond the Critical Region

January 1, 1998

Author(s)

S B. Kiselev, Marcia L. Huber

Measured and Predicted Thermodynamic Properties of Selected Halon Alternative/Nitrogen Mixtures

December 1, 1997

Author(s)

J C. Yang, I Vazquez, C I. Boyer, Marcia L. Huber, L A. Weber

Measured and Predicted Thermodynamic Properties of Selected Halon Alternative/Nitrogen Mixtures

January 1, 1997

Author(s)

Jiann C. Yang, I Vazquez, C I. Boyer, Marcia L. Huber, L A. Weber

Experimental measurements of selected thermodynamic properties of alternative agent/nitrogen mixtures were performed. The selected alternatives were HFC-227 ea (C3HF7), CF3I, FC-218 (C3F8), and HFC-125 (C2HF5); CF3Br was also included as a reference. A

Optimization of System Discharge (NIST SP 890)

November 1, 1995

Author(s)

Jiann C. Yang, Thomas G. Cleary, I Vazquez, C I. Boyer, M D. King, B D. Breuel, C A. Womeldorf, William L. Grosshandler, Marcia L. Huber, L Weber, G. Gmurczyk

Current aircraft fire suppression bottles for dry bay and engine nacelle applications, which are designed to meet Military Specification MIL-C-22284A (proof pressure of 9.62 MPa and minimum burst pressure of 12.37 MPa), are normally filled with liquid

Storage and Discharge Characteristics of Halon Alternatives

October 21, 1995

Author(s)

Jiann C. Yang, Thomas G. Cleary, I Vazquez, C I. Boyer, M D. King, B D. Breuel, Marcia L. Huber, L Weber

Three important issues regarding the use of halon alternatives for in-flight fire protection applications were studied as part of the current halon alternative research program at the National Institute of Standards and Technology (NIST): (1) the

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