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Contributions to the Data on Theoretical Metallurgy: [Part] 3. The Free Energies of Vaporization and Vapor Pressures of Inorganic Substances

Description: From Introduction: "It is the purpose of this present work (1) to apply the previously compiled entropy values and specific-heat equations to vapor-pressure and other pertinent data in obtaining heat and free energy of vaporization equations for inorganic substances valid up to the normal boiling or sublimation points (760 mm pressure), (2) to supplement wherever possible the data on heats and entropies of transformations and fusions, (3) to supplement wherever possible the data on heats and entropies of gases, and (4) to supply tables of vapor pressures for inorganic substances at various temperatures up to and including the boiling or sublimation point."
Date: 1935
Creator: Kelley, K. K.
Partner: UNT Libraries Government Documents Department

Experimental and calculated histories of vaporizing fuel drops

Description: Report presenting the results of an experimental and theoretical investigation of the vaporization of fuel droplets in heated air under atmospheric pressure. An experimental investigation of the temperature and mass histories of single droplets was made, a comparison of the experimental results was conducted with calculated temperature and mass histories, and the time taken by a droplet vaporizing to for a mixture of fuel vapor and air of combustible strength is calculated.
Date: August 1957
Creator: Priem, R. J.; Borman, G. L.; El Wakil, M. M.; Uyehara, O. A. & Myers, P. S.
Partner: UNT Libraries Government Documents Department

Experimental and calculated temperature and mass histories of vaporizing fuel drops

Description: Report presenting a comparison of experimental and calculated mass and temperature histories of drops vaporizing with a constant velocity relative to the air. The results indicate that the unsteady state or time required for the drop to reach the wet-bulb temperature is an appreciable portion of the total vaporization time. Results regarding the measurement of surface and center temperature of drops, internal circulation in drops, heat transfer from thermocouple to drop, experimental temperature and mass histories, binary mixtures, and burning drops are provided and compared to theoretical results.
Date: January 1956
Creator: El Wakil, M. M.; Priem, R. J.; Brikowski, H. J.; Myers, P. S. & Uyehara, O. A.
Partner: UNT Libraries Government Documents Department

Propellant vaporization as a criterion for rocket engine design; Relation between percentage of propellant vaporized and engine performance

Description: Report presenting an anakysis of the quantitative effect of incomplete propellant vaporization on rocket-engine performance. Results regarding the effect of incomplete vaporization on engine performance and an interpretation of experimental data are provided.
Date: March 1958
Creator: Heidmann, Marcus F. & Priem, Richard J.
Partner: UNT Libraries Government Documents Department

Propellant vaporization as a criterion for rocket-engine design; Calculations of chamber length to vaporize various propellants

Description: From Summary: "Vaporization rates were calculated for drops of n-heptane, ammonia, hydrazine, oxygen, and fluorine. The percent propellant vaporized is correlated with an effective chamber length for various spray conditions, and various engine-design and operating parameters. The results show that the effective chamber length required to vaporize a given high percentage of propellant is the shortest with oxygen and increases for fluorine, heptane, ammonia, and hydrazine in that order."
Date: September 1958
Creator: Priem, Richard J.
Partner: UNT Libraries Government Documents Department

Propellant vaporization as a criterion for rocket-engine design; Calculations using various log-probability distributions of heptane drops

Description: Report presenting calculations made to determine the vaporization rates of fuel drops in a rocket engine for sprays having various log-probability distributions of n-heptane drops. The rates were calculated for various engine design and operating parameters. Results regarding the geometric standard deviation, mass-median drop size, variation in group size, and a correlation of results are provided.
Date: October 1957
Creator: Priem, Richard J.
Partner: UNT Libraries Government Documents Department

A theoretical investigation of the heating-up period of injected fuel droplets vaporizing in air

Description: Report presenting an investigation of fuel injection into a combustion chamber, including theoretical and experimental results regarding the unsteady-state portion of the total vaporization time of single fuel droplets injected into air.
Date: May 1954
Creator: El Wakil, M. M.; Uyehara, O. A. & Myers, P. S.
Partner: UNT Libraries Government Documents Department

An analysis of the factors affecting the state of fuel and air mixtures

Description: From Introduction: "It is the purpose of this paper to describe the physical properties that are necessary to specify mixture quality in a system containing fuel and dry air and to evaluate the theoretical rolation between these properties and the physical properties of the mixture."
Date: May 1946
Creator: Gilbert, Mitchell; Howard, John N & Hicks, Bruce L
Partner: UNT Libraries Government Documents Department

Graphs of reduced variables for computing histories of vaporizing fuel drops, and drop histories under pressure

Description: Report presenting an investigation with two purposes: to obtain a simplified calculation technique for replacing complicated automatic computer calculations and to obtain experimental data for single droplets vaporizing at pressures greater than 1 atmosphere and to check the histories against experimental data.
Date: September 1958
Creator: Borman, G. L.; El Wakil, M. M.; Uyehara, O. A. & Myers, P. S.
Partner: UNT Libraries Government Documents Department

Vaporization rates and heat-transfer coefficients for pure liquid drops

Description: Report presenting an investigation to determine the vaporization rates of pure liquid drops vaporizing under conditions similar to those encountered in aircraft combustion systems using a heat-balance equation. Results regarding the analysis and experimental results are provided.
Date: July 1951
Creator: Ingebo, Robert D.
Partner: UNT Libraries Government Documents Department

Study of pressure effects on vaporization rate of drops in gas streams

Description: Report presenting the determination of the rate of vaporization of a pure liquid from a spherical surface exposed to a gas stream of varying static pressure, which required the use of a heat-balance equation. Results regarding the effect of pressure on Nusselt number, momentum-transfer groups, application of momentum-transfer groups to heat and mass transfer, and effect of pressure on driving potential are provided.
Date: January 1953
Creator: Ingebo, Robert D.
Partner: UNT Libraries Government Documents Department

Vapor pressures and calculated heats of vaporization of concentrated nitric acid solutions in the composition range 71 to 89 percent nitrogen dioxide, 1 to 10 percent water, and in the temperature range 10 to 60 degrees C

Description: From Summary: "Total vapor pressures were measured for 16 acid mixtures of the ternary system nitric acid, nitrogen dioxide, and water within the temperature range 10 degrees to 60 degrees Celsius, and with the composition range 71 to 89 weight percent nitric acid, 7 to 20 weight percent nitrogen dioxide, and 1 to 10 weight percent water. Heats of vaporization were calculated from the vapor pressure measurements for each sample for the temperatures 25, 40, and 60 degrees Celsius. The ullage of the apparatus used for the measurements was 0.46. Ternary diagrams showing isobars as a function of composition of the system were constructed from experimental and interpolated data for the temperatures 25, 40, 45, and 60 degrees C and are presented herein."
Date: February 5, 1954
Creator: McKeown, A. B. & Belles, Frank E.
Partner: UNT Libraries Government Documents Department

Drag coefficients for droplets and solid spheres in clouds accelerating in airstreams

Description: Report presenting a study of clouds of liquid and solid spheres accelerating in airstreams over a range of airstream pressure, temperature, and velocity conditions. Diameter and velocity data for individual droplets and solid spheres in the clouds were obtained with a high-speed camera developed at the NACA Lewis laboratory.
Date: September 1956
Creator: Ingebo, Robert D.
Partner: UNT Libraries Government Documents Department

Vaporization rates and drag coefficients for isooctane sprays in turbulent air streams

Description: Report presenting the use of a droplet camera developed at the NACA Lewis laboratory to obtain drop-size distribution and drop-velocity data for isooctane injected from a simple orifice directly into a turbulent air stream. Vaporization and drag coefficients were calculated for isooctane drops accelerating and evaporating in streams with velocities of 140 and 180 feet per second. Results regarding the vaporization-rate equations, drop-size-distribution analyses, analysis of drop-velocity data, and fuel-spray-evaporation calculations are provided.
Date: October 1954
Creator: Ingebo, Robert D.
Partner: UNT Libraries Government Documents Department

Fuel-evaporation loss as determined by the change in the specific gravity of the fuel in an aircraft fuel tank

Description: Report discusses the results of an investigation to determine the feasibility of using the change in the specific gravity of fuels in aircraft fuel tanks to measure fuel-vaporization loss. Six fuels were tested via fuel-distillation tests and simulated-flight tests. An equation based on the specific gravity of the fuel is also described.
Date: May 1945
Creator: Stone, Charles S. & Kramer, Walter E.
Partner: UNT Libraries Government Documents Department

A Group Contribution Model for Determining the Vaporization Enthalpy of Organic Compounds at the Standard Reference Temperature of 298 K

Description: Article on a group contribution model for determining the vaporization enthalpy of organic compounds at the standard reference temperature of 298 K.
Date: November 9, 2013
Creator: Gharagheizi, Farhad; Ilani-Kashkouli, Poorandokht; Acree, William E. (William Eugene); Mohammadi, Amir H. & Ramjugernath, Deresh
Partner: UNT College of Arts and Sciences

Thermodynamic Properties of Oxygen and Nitrogen

Description: Report issued by the Bureau of Mines discussing the thermodynamics of oxygen and nitrogen. Properties of these elements and methods of estimating thermodynamic data are presented. This report includes tables.
Date: 1928
Creator: Millar, Russell W. & Sullivan, John D.
Partner: UNT Libraries Government Documents Department

Multicomponent fuel vaporization at high pressures.

Description: We extend our multicomponent fuel model to high pressures using a Peng-Robinson equation of state, and implement the model into KIVA-3V. Phase equilibrium is achieved by equating liquid and vapor fugacities. The latent heat of vaporization and fuel enthalpies are also corrected for at high pressures. Numerical simulations of multicomponent evaporation are performed for single droplets for a diesel fuel surrogate at different pressures.
Date: January 1, 2002
Creator: Torres, D. J. (David J.) & O'Rourke, P. J. (Peter J.)
Partner: UNT Libraries Government Documents Department