Publications

Displaying 126 - 150 of 168

Measurement and Correlation of the Thermal Conductivity of Methylcyclohexane and Propylcyclohexane from 300 K to 600 K at Pressures to 60 MPa

August 5, 2008

Author(s)

Richard A. Perkins, Ulf Hammerschmidt, Marcia L. Huber

New experimental data on the thermal conductivity of methylcyclohexane and propylcyclohexane are reported that allow the development of wide-range correlations. These new experimental data, covering a temperature range of 300 K to 600 K and a pressure

Thermophysical Properties Measurements and Models for Rocket Propellant RP-1: Phase I

February 1, 2007

Author(s)

Joe W. Magee, Thomas J. Bruno, Daniel G. Friend, Marcia L. Huber, Arno D. Laesecke, Eric Lemmon, Mark O. McLinden, Richard A. Perkins, J?rg Baranski, Jason A. Widegren

Accurate knowledge of thermophysical properties is a prerequisite to design efficient and cost-effective rocket engine systems that use the kerosene rocket propellant designated RP-1. A robust properties model that is based on reliable experimental

Thermochemical and Thermophysical Properties of JP-10

June 1, 2006

Author(s)

Thomas J. Bruno, Marcia L. Huber, Arno D. Laesecke, Eric Lemmon, Richard A. Perkins

This report describes measurement and modeling efforts performed on the missile fuel, JP-10. Measurements* include chemical analysis, thermal decomposition kinetics, density, viscosity, speed of sound, thermal conductivity and vapor pressure (distillation

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

Specific Heat Capacity at Constant Volume for R125 and R410a at Temperatures from (300 to 400) K and Pressures to 20 MPa

August 6, 2005

Author(s)

Richard A. Perkins, Joe W. Magee

Specific heat capacities at constant volume (Cv) were measured with an adiabatic calorimeter for pure pentafluoroethane (R125) and an azeotrope-like mixture of R32 and R125 (R410A) with a mole fraction composition of 0.6975 difluoromethane + 0.3025

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

Measurement and Correlation of the Thermal Conductivity of Butane From 135 K to 600 K at Pressures to 70 MPa

October 1, 2002

Author(s)

Richard A. Perkins, M L. Ramires, Carlos A. Nieto de Castro, L -. Cusco

New experimental data on the thermal conductivity of butane are reported that allow improved correlations to be developed. Previous correlations have beenlimited by a lack of thermal conductivity data for the vapor and compressed liquid at temperatures

Measurement and Correlation of the Thermal Conductivity of Isobutane From 114 K to 600 K at Pressures to 70 MPa

October 1, 2002

Author(s)

Richard A. Perkins

New experimental data on the thermal conductivity of isobutane are reported that allow improved correlations to be developed. Previous correlations havebeen limited by a lack of thermal conductivity data for the vapor and compressed liquid at temperatures

Measurement and Correlation of the Thermal Conductivity of Propane From 86 K to 600 K at Pressures to 70 Mpa

August 1, 2002

Author(s)

K N. Marsh, Richard A. Perkins, M L. Ramires

New experimental data on the thermal conductivity of propane are reported that allow improved correlations to be developed. Previous correlations have been limited by a lack of thermal conductivity data for the vapor at temperatures below 300 K and liquid

Thermal Conductivities of Alternatives to CFC-11 for Foam Insulation

April 1, 2001

Author(s)

Richard A. Perkins, L -. Cusco, J -. Howley, Arno R. Laesecke, S -. Matthes, M L. Ramires

The present work examines the thermal conductivities of several dilute vapors which are potential alternatives to chlorofluorocarbons (CFCs) for cellular-plastic foams. Thermal conductivity data are reported in the vapor phase, from 280 to 340 K, for

Experimental Thermal Conductivity Values for the IUPAC Round-Robin Sample of 1,1,1,2-Tetrafluoroethane (R134a)

December 1, 2000

Author(s)

Richard A. Perkins, Arno D. Laesecke, J -. Howley, M L. Ramires, A N. Gurova, L -. Cusco

Experimental measurements are reported for the thermal conductivity of 1,1,1,2-tetrafluoroethane (R134a). These measurements were obtained with transient and steady-state hot wires; both bare platinum and anodized tantalum hot wires were used to examine

Absolute Steady-State Thermal Conductivity Measurements by Use of a Transient Hot-Wire System

March 1, 2000

Author(s)

H M. Roder, Richard A. Perkins, Arno D. Laesecke, Carlos A. Nieto de Castro

A transient hot-wire apparatus was used to measure the thermal conductivity of argon with both steady-state and transient methods. The effects of wire diameter, eccentricity of the wire in the cavity, axial conduction, and natural convection were accounted

Thermal Conductivity of Saturated Liquid Toluene by Use of Anodized Tantalum Hot Wires at High Temperatures

March 1, 2000

Author(s)

Richard A. Perkins, M L. Ramires, Carlos A. Nieto de Castro

Absolute measurements of the thermal conductivity of a distilled and dried sample of toluene near saturation are reported. The transient hot-wire technique with an anodized tantalum hot wire was used. The thermal conductivities were measured at

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