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Search Publications by: Eric W. Lemmon (Fed)

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Displaying 51 - 75 of 136

Speed of sound measurements and a fundamental equation of state for cyclopentane

April 22, 2015
Author(s)
Eric W. Lemmon, Holger Gedanitz, Maria J. Davila
The speed of sound in liquid cyclopentane has been measured in the temperature range from (258 to 353) K at pressures up to 30 MPa (42 data points) using a pulse-echo method with a double path type sensor. The expanded overall uncertainty (k = 2) in the

A Fundamental Equation of State for 1,1,1,3,3-Pentafluoropropane (R-245fa)

March 26, 2015
Author(s)
Ryo Akasaka, Yong Zhou, Eric Lemmon
A new fundamental equation of state explicit in the Helmholtz energy is presented for 1,1,1,3,3 pentafluoropropane (R 245fa), based on recent experimental data for the vapor pressures, densities, and vapor sound speeds. The functional form now uses

ThermoData Engine (TDE) Version 9.0 (Pure Compounds, Binary Mixtures, Ternary Mixtures, and Chemical Reactions); NIST Standard Reference Database 103b

December 31, 2014
Author(s)
Michael D. Frenkel, Robert D. Chirico, Vladimir Diky, Kenneth Kroenlein, Chris Muzny, Andrei F. Kazakov, Joe W. Magee, Ilmutdin M. Abdulagatov, Eric Lemmon, Jeongwon Kang
The ThermoData Engine is a software expert systems implementing the concept of dynamic data evaluation. This new release includes implementation of three important new features: (1)new parameters for the NIST "modified UNIFAC" method for predictions of

An Equation of State for the Thermodynamic Properties of Cyclohexane

December 5, 2014
Author(s)
Yong Zhou, Jun Liu, Steven Penoncello, Eric Lemmon
In this work, an equation of state for cyclohexane has been developed using the Helmholtz energy as the fundamental property with independent variables of density and temperature. Multi-property fitting technology was used to fit the equation of state that

Fundamental Equation of State for Deuterium

February 27, 2014
Author(s)
Ian A. Richardson, Jacob W. Leachman, Eric Lemmon
World utilization of deuterium is anticipated to increase with the rise of fusion energy machines such as ITER and NIF. We present a new fundamental equation of state for the thermodynamic properties of fluid deuterium. Differences between thermodynamic

ThermoData Engine (TDE) Version 8.0 (Pure Compounds, Binary Mixtures, Ternary Mixtures, and Chemical Reactions); NIST Standard Reference Database 103b

December 31, 2013
Author(s)
Michael D. Frenkel, Robert D. Chirico, Vladimir Diky, Kenneth Kroenlein, Chris Muzny, Andrei F. Kazakov, Joe W. Magee, Ilmutdin M. Abdulagatov, Eric Lemmon
The ThermoData Engine is a software expert systems implementing the concept of dynamic data evaluation. This new release includes four important new features. (1) Implementation of the Peng-Robinson EOS for mixtures. (2) Evaluation of ideal-gas entropies

Better Defining the Uncertainties for the AGA-8 Equation

August 22, 2013
Author(s)
Eric W. Lemmon
In order to revise the AGA-8 documentation for publication in 2014, better knowledge of the 0.1% uncertainty level in the equation of state is needed. A 0.1% uncertainty level has been identified by an AGA-8 task group as the acceptable limit of error for

NIST/ASME Steam Properties, Version 3.0

June 3, 2013
Author(s)
Allan H. Harvey, Eric W. Lemmon
This is an update of NIST Standard Reference Database 10. The main purpose of the update is to convert the database to a new graphical user interface that works on 64-bit machines.

Thermodynamic Properties of o-Xylene, m-Xylene, p-Xylene, and Ethylbenzene

June 27, 2012
Author(s)
Eric W. Lemmon, Yong Zhou, Jiangtao Wu
Equations of state for the xylene isomers (o-xylene, m-xylene, and p-xylene) and ethylbenzene have been developed with the use of the Helmholtz energy as the fundamental property with independent variables of density and temperature. The general

Thermodynamic Properties of Dimethyl Carbonate

December 27, 2011
Author(s)
Yong Zhou, Jiangtao Wu, Eric Lemmon
A thermodynamic property formulation for dimethyl carbonate has been developed with the use of available experimental thermodynamic property data. The equation of state was developed with multi-property fitting methods involving single-phase pressure

An Equation of State for the Thermodynamic Properties of Dimethyl Ether

June 6, 2011
Author(s)
Yong Zhou, Jiangtao Wu, Eric Lemmon
A thermodynamic property formulation for dimethyl ether has been developed based on a selection of experimental thermodynamic property data. The formulation includes a fundamental equation, a vapor pressure equation, and saturated density equations for

Equations of State on Demand: Application for Surrogate Fuel Development

January 15, 2011
Author(s)
Marcia L. Huber, Thomas J. Bruno, Robert D. Chirico, Vladimir Diky, Andrei F. Kazakov, Eric W. Lemmon, Chris D. Muzny, Michael D. Frenkel
The NIST ThermoData Engine (TDE) is a large electronic database containing experimental data with detailed descriptions of relevant metadata and uncertainties that incorporates expert- system software to automatically generate dynamically evaluated data

The Thermodynamic Properties of Propane: From p-r-T to the Equation of State

September 14, 2010
Author(s)
Mark O. McLinden, Eric W. Lemmon
The p-ρ-T behavior of high-purity (99.999%) propane was measured from 265 K to 500 K with pressures to 36 Mpa using a two-sinker densimeter. The measurements extend from low-density vapor to compressed liquid states, and the near-critical region was

Thermodynamic, Transport, and Chemical Properties of Reference JP-8

July 14, 2010
Author(s)
Thomas J. Bruno, Marcia L. Huber, Arno R. Laesecke, Eric W. Lemmon, Mark O. McLinden, Stephanie L. Outcalt, Richard A. Perkins, Beverly L. Smith, Jason A. Widegren
This report contains a summary of research conducted to develop a standard or accepted set of thermophysical properties for the aviation kerosene, JP-8. This report is the culmination of a three year effort that included the participation of most of the

Surrogate Mixture Models for the Thermophysical Properties of Aviation Fuel Jet-A

May 27, 2010
Author(s)
Marcia L. Huber, Eric W. Lemmon, Thomas J. Bruno
We developed surrogate mixture models to represent the thermophysical properties of two samples of aviation turbine fuel Jet-A. One sample is a composite of numerous batches from a multiple manufacturers and is considered to be a representative fuel. A

Thermophysical Properties of Selected Fluids at Saturation

January 1, 2010
Author(s)
Eric W. Lemmon
These tables give thermodynamic and transport properties of a variety of fluids, as generated from the equations of state presented in the references below. The properties tabulated are pressure (P), density (ρ), enthalpy (H), entropy (S), isochoric heat