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Energy

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Displaying 151 - 175 of 237

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

Investigating the Unique Properties of Cuphea Derived Biodiesel with the Advanced Distillation Curve Method

May 17, 2010

Author(s)

Tara Lovestead, Bret Windom, Thomas J. Bruno

Currently, there is a desire to extend or enhance petroleum-derived diesel fuel with biodiesel fuel. Biodiesel fuel is a renewable, biomass-derived fluid that is biodegradable, nontoxic, and a better lubricant compared to petroleum-derived diesel fuels. In

Assessment of the Compositional Variability of RP-1 and RP-2 with the Advanced Distillation Curve Approach

May 7, 2010

Author(s)

Bret Windom, Tara Lovestead, Jennifer Riggs, Chris Nickell, Thomas J. Bruno

RP-1 is a long-established hydrocarbon fuel that continues to be widely used as the kerosene component in rocket propulsion systems. The desire in recent years to use rocket motors many times, rather than a single time, has led to reformulations of RP-1

Thermal Decomposition of RP-2 with Stabilizing Additives

May 7, 2010

Author(s)

Jason A. Widegren, Thomas J. Bruno

The thermal decomposition of RP-2 and mixtures of RP-2 with four different additives has been investigated. The mixtures with RP-2 contained one of the following: 5 % /trans/-decahydronaphthalene (decalin); 5 % 1,2,3,4-tetrahydronaphthalene (tetralin); 5 %

Kinetics of the Thermal Reaction of H Atoms with Propyne

April 15, 2010

Author(s)

Claudette M. Rosado-Reyes, Jeffrey A. Manion, Wing Tsang

The reaction of hydrogen atoms with propyne(CH≡CCH3) has been investigated in a heated single pulse shock tube at temperatures of 870-1145K and pressures of 2-9 bar. Stable products from various reaction channels (terminal and non-terminal H addition, and

Application of the Advanced Distillation Curve Method to the Development of Unleaded Aviation Gasoline

April 2, 2010

Author(s)

Bret Windom, Tara Lovestead, Thomas J. Bruno

The primary fuel used within the general aviation industry is a petroleum based gasoline blended with small amounts of tetraethyl lead (a lead-based additive used to increase the octane number of gasoline without affecting its performance) called 100 LL

Relating Complex Fluid Composition and Thermophysical Properties with the Advanced Distillation Curve Approach

March 17, 2010

Author(s)

Thomas J. Bruno, Lisa S. Ott, Tara M. Lovestead, Marcia L. Huber

Complex fluids have long posed a significant challenge in our ability to characterize and model fluid properties. Here, we consider complex fluids to be mixtures with many components that can differ significantly in polarity and polarizability. The

Complex Fluid Analysis with the Advanced Distillation Curve Approach

February 1, 2010

Author(s)

Thomas J. Bruno, Lisa S. Ott, Beverly L. Smith, Tara M. Lovestead

An improved method for measuring distillation curves reveals the physicochemical properties of complex fluids such as fuels.

Density and Speed of Sound Measurements of Hexadecane

January 7, 2010

Author(s)

Stephanie L. Outcalt, Arno R. Laesecke, Tara J. Fortin

The density and speed of sound of hexadecane have been measured using two instruments. Both instruments use the vibrating-tube method for measuring density. Ambient pressure (83 kPa) density and speed of sound measurements were carried out with a rapid

Thermodynamic Properties of Propane. III. A Reference Equation of State for Temperatures from the Melting Line to 650 K and Pressures up to 1000 MPa

November 23, 2009

Author(s)

Eric W. Lemmon, Mark O. McLinden, W Wagner

Times New RomanA formulation is presented for the thermodynamic properties of propane. The equation of state is valid for temperatures from the triple point temperature (85.525 K) to 650 K and for pressures up to 1000 MPa. The formulation can be used for

The Composition Explicit Distillation Curve Technique: Relating Chemical Analysis and Physical Properties of Complex Fluids

November 17, 2009

Author(s)

Thomas J. Bruno, Lisa S. Ott, Tara M. Lovestead, Marcia L. Huber

The analysis of complex fluids such as crude oils, fuels, vegetable oils and mixed waste streams poses significant challenges arising primarily from the multiplicity of components, the different properties of the components (polarity, polarizability, etc)

Effect of RP-1 Compositional Variability on Thermophysical Properties

October 6, 2009

Author(s)

Marcia L. Huber, Eric W. Lemmon, Thomas J. Bruno

We compare experimental and predicted thermophysical properties of two samples of rocket propellant RP-1 obtained from different batches of RP-1 that exhibit compositional variations. One sample is atypical, due to a high olefin content. The effect of the

Thermal Decomposition Kinetics of Kerosene-based Rocket Propellants. 1. Comparison of RP-1 and RP-2

September 11, 2009

Author(s)

Jason A. Widegren, Thomas J. Bruno

The decomposition kinetics of the kerosene-based rocket propellants RP-1 and RP-2 was studied. For RP-2, decomposition reactions were performed at 375, 400, 425, and 450 °C. For RP-1, decomposition reactions were only performed at 450 °C because we had