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A Practical Approach to Availability and Irreversibility

Description: From Introduction: "The purpose of this paper is to shed additional light on the techniques of a Second Law Analysis. The stimulus for writing this paper came from questions asked and difficulties that occurred during lectures on the subject at the graduate level. This paper utilizes Keenan's basic approach but presents the material with emphasis upon a clear definition of the work associated with each subsystem in the process."
Date: June 1963
Creator: Hoglund, Barton M.
Partner: UNT Libraries Government Documents Department

Thermodynamic Properties of Nonelectrolyte Solutes in Ternary Solvent Mixtures

Description: The purpose of this dissertation is to investigate the thermodynamic properties of nonelectrolyte solutes dissolved in ternary solvent mixtures, and to develop mathematical expressions for predicting and describing that behavior in the solvent mixtures. Thirty-four ternary solvent systems were studied containing either alcohol (1-propanol, 2-propanol, 1-butanol, and 2-butanol), alkane (cyclohexane, heptane, and 2,2,4-trimethylpentane) or alkoxyalcohol (2-ethoxyethanol and 2-butoxyethanol) cosolvents. Approximately 2500 experimental measurements were performed. Expressions were derived from the Combined Nearly Ideal Multiple Solvent (NIMS)/Redlich-Kister, the Combined Nearly Ideal Multiple Solvent (NIMS)/Bertrand, Acree and Burchfield (BAB) and the Modified Wilson models for predicting solute solubility in ternary solvent (or even higher multicomponent) mixtures based upon the model constants calculated from solubility data in sub-binary solvents. Average percent deviation between predicted and observed values were less than 2%, documenting that these models provide a fairly accurate description of the thermodynamic properties of nonelectrolyte solutions. Moreover, the models can be used for solubility prediction in solvent mixtures in order to find the optimum solvent composition for solubilization or desolubilization of a solute. From a computational standpoint, the Combined Nearly Ideal Multiple Solvent/Redlich-Kister equation is preferred because the needed model constants can be calculated with a simple linear regressional analysis. Model constants for the Modified Wilson equation had to be calculated using a reiterative trial-and-error method. The C++ program for the Modified Wilson equation applied to ternary and heptanary solvent mixtures is attached.
Date: August 1999
Creator: Deng, Tʻai-ho
Partner: UNT Libraries

Thermodynamic Properties of Halides

Description: From Introduction: "This compilation is the second in a series revising and expanding Bureau of Mines Bulletin 605, "Thermodynamic Properties of 65 Elements-Their Oxides, Halides, Carbides, and Nitrides," by C. E. Wicks and F. E. Block, published in 1963, and including data available through 1959."
Date: unknown
Creator: Pankratz, L. B.
Partner: UNT Libraries Government Documents Department

Thermodynamic Properties of 65 Elements: Their Oxides, Halides, Carbides and Nitrides

Description: From Introduction: "This Bureau of Mines bulletin was prepared to compile in readily usable form the heat content, heat-of-formation, and free-energy-of-formation data for 65 common elements and their respective oxides, halides, carbides, and nitrides. The bulletin was prepared to encourage the application of thermodynamics in the metallurgical field; consequently, the values have been presented in a simple, readily usable form and several examples of their applications have been shown."
Date: 1963
Creator: Wicks, C. E. & Block, F. E.
Partner: UNT Libraries Government Documents Department

Thermodynamic Data for Mineral Technology

Description: From Introduction: "This compilation is part of the Bureau of Mines continuing effort to provide information for use as guidelines in mineral technology advancement, pollution control, and energy economy."
Date: unknown
Creator: Pankratz, L. B.; Stuve, J. M. & Gokcen, N. A.
Partner: UNT Libraries Government Documents Department

Thermodynamic Properties of Saline Water

Description: From Abstract: "Activity coefficients of calcium sulfate were calculated from solubilities of gypsum in 0 to 1.0m sodium chloride at temperatures from 25 degrees C to 95 degrees C. X-ray diffraction studies for calcium sulfate modifications before and after contact with aqueous and saline solutions are given."
Date: July 1964
Creator: Power, W. H. & Fabuss, B. M.
Partner: UNT Libraries Government Documents Department

Thermodynamic and Related Properties of Parahydrogen From the Triple Point to 100 K at Pressures to 340 Atmospheres

Description: From Introduction: "In the present report, therefore, polynomials representing isotherms and isochores are combined with numerical methods of computation for the purpose of improving accuracy, in particular for the derivatives of the P-p-T surface."
Date: August 10, 1965
Creator: Roder, H. M.; Weber, L. A. & Goodwin, R. D.
Partner: UNT Libraries Government Documents Department

Tables of Einstein Functions: Vibrational Contributions to the Thermodynamic Functions

Description: From Introduction: "The recent acceptance by physicists and chemists of new values for the fundamental constants and the continued demand for expanded and convenient tables prompted the recomputation and preparation of this volume. The authors have tried to incorporate this work a number of the more desirable features of the above-cited works, particularly with respect to their use in calculations involving: Thermodynamic properties of gases; specific heats, electrical and thermal conductivity of solids; and molecular structure and spectroscopy of diatomic and polyatomic molecules. It is the hope of the authors that formal character of this publication will insure a more adequate notice and dissemination than was accorded the earlier works, thereaby reducing the probability of still further duplication of effort."
Date: July 12, 1962
Creator: Hilsenrath, Joseph & Ziegler, Guy G.
Partner: UNT Libraries Government Documents Department

Preliminary Analysis of an Innovative Rotary Displacer Stirling Engine

Description: Stirling engines are an external combustion heat engine that converts thermal energy into mechanical work that a closed cycle is run by cyclic compression and expansion of a work fluid (commonly air or Helium) in which, the working fluid interacts with a heat source and a heat sink and produces network. The engine is based on the Stirling cycle which is a subset of the Carnot cycle. The Stirling cycle has recently been receiving renewed interest due to some of its key inherent advantages. In particular, the ability to operate with any form of heat source (including external combustion, flue gases, alternative (biomass, solar, geothermal) energy) provides Stirling engines a great flexibility and potential benefits since it is convinced as engines running with external heat sources. However, several aspects of traditional Stirling engine configurations (namely, the Alpha, Beta, and Gamma), specifically complexity of design, high cost, and relatively low power to size and power to volume ratios, limited their widespread applications to date. This study focuses on an innovative Stirling engine configuration that features a rotary displacer (as opposed to common reciprocating displacers), and aims to utilize analytical and numerical analysis to gain insights on its operation parameters. The results are expected to provide useful design guidelines towards optimization. The present study starts with an overview of the Stirling cycle and Stirling engines including both traditional and innovative rotary displacer configurations, and their major advantages and disadvantages. The first approach considers an ideal analytical model and implements the well-known Schmidt analysis assumptions for the rotary displacer Stirling engine to define the effects of major design and operation parameters on the performance. The analytical model resulted in identifying major variables that could affect the engine performance (such as the dead volume spaces, temperature ratios and the leading phase angle). It was ...
Date: December 2015
Creator: Bagheri, AmirHossein
Partner: UNT Libraries

Contributions to the Data on Theoretical Metallurgy: [Part] 13. High-Temperature Heat-Content, Heat-Capacity, and Entropy Data for the Elements and Inorganic Compounds

Description: From Introduction: "This publication as its title indicates, contains high-temperature heat-content, heat-capacity, and entropy data for the elements and inorganic compounds. The available experimental and calculated values were compiled and intercompared, and a selection of "best" values was made. The heat-content data are given in tabular form for use by those who make thermodynamic computations by means of tables, and in algebraic form for use by those who prefer equations."
Date: 1960
Creator: Kelley, K. K.
Partner: UNT Libraries Government Documents Department

Contributions to the Data on Theoretical Metallurgy: [Part] 10. High-temperature Heat-Content, Heat-Capacity, and Entropy Data for Inorganic Compounds

Description: From Introduction: "This work is both a revision and an elaboration of Bureau of Mines Bulletin 371, which was published in 1934 and included data available to October 1933. This bulletin purposes to collect and correlate all available high-temperature heat-content and specific-heat data for inorganic substances and to formulate tables and algebraic expressions for their representation. It is expected also that this bulletin will have value to those teaching courses in metallurgical and chemical thermodynamics."
Date: 1949
Creator: Kelley, K. K.
Partner: UNT Libraries Government Documents Department

Contributions to the Data on Theoretical Metallurgy: [Part] 15. A Reprint of Bulletins 383, 384, 393, and 406

Description: Report issued by the Bureau of Mines containing a compilation of four previously printed Bulletins discussing thermodynamics and inorganic substances. The four reprints included are bulletins 383, 384, 393, and 406, and are each printed in full. This report includes tables.
Date: 1962
Creator: Kelley, K. K.
Partner: UNT Libraries Government Documents Department

Chemical Thermodynamic Properties of Hydrocarbons and Related Substances: Properties of the Alkane Hydrocarbons, C1 through C10, in the Ideal Gas State From 0 to 1500 K

Description: From Introduction: "A compilation of chemical thermodynamic properties of the alkanes, based on this correlation, is given in this bulletin for all of the alkane isomers through C^10 for selected temperatures between 0 and 1500 K. It is intended to fulfill the need for an updated compilation mentioned in the previous paragraph."
Date: unknown
Creator: Scott, Donald W.
Partner: UNT Libraries Government Documents Department

The Chemical Thermodynamic Properties of Hydrocarbons and Related Substances: The Use of n-Heptane as a Reference Substance for Low-Temperature Calorimetry

Description: From Introduction and Summary: "This bulletin presents the results obtained n-heptane by the petroleum thermodynamics laboratory of the Bartlesville, Okla., facility. Detailed results of five investigations are given; selected values if the low-temperature thermal properties are tabulated; and comparisons with results that were obtained in other laboratories are made. The findings of this extensive study will serve to characterize the low-temperature thermal data for over 100 compounds that will be presented in a later bulletin of this series."
Date: 1961
Creator: Griffith, F. E.; Magnuson, M. O. & Toothman, G. J. R.
Partner: UNT Libraries Government Documents Department

Contributions to the Data on Theoretical Metallurgy: [Part] 4. Metal Carbonates--Correlations ans Applications of Thermodynamic Properties

Description: From Introduction: "This publication proposes to assemble existing thermodynamic data for carbonates and to correlate so far as possible the results of decomposition-pressure determinations with the calorimetrically determined heats of formation and entropy values on the one hand and with solubility and standard electrode-potential data on the other."
Date: 1935
Creator: Kelley, K. K. & Anderson, C. T.
Partner: UNT Libraries Government Documents Department

Contributions to the Data on Theoretical Metallurgy: [Part] 16. Thermodynamic Properties of Nickel and its Inorganic Compounds

Description: From Introduction: "The compilation of thermodynamic properties of nickel and its inorganic compounds was undertaken as part of a continuing effort by the Federal Bureau of Mines to provide information for the extractive metallurgist to use as guidelines for research on improving established process or developing new ones. This report also provides useful information for other areas of thermochemical research."
Date: unknown
Creator: Mah, Alla D. & Pankratz, L. B.
Partner: UNT Libraries Government Documents Department

Thermodynamics, Kinetics, and Mechanism of (silox)3M(olefin) to (silox)3M(alkylidene) Rearrangements (silox = tBu3SiO; M = Nb, Ta)

Description: Article discussing the thermodynamic, kinetic, and mechanism of (silox)3M(olefin) to (silox)3M(alkylidene) rearrangements (silox = tBu3SiO; M = Nb, Ta).
Date: March 10, 2005
Creator: Hirsekorn, Kurt F.; Veige, Adam S.; Marshak, Michael P.; Koldobskaya, Yelena; Wolczanski, Peter T.; Cundari, Thomas R., 1964- et al.
Partner: UNT College of Arts and Sciences

Thermodynamic Calculations Relating to Chloride Volatility Processing of Nuclear Fuels: [Part] 2. The Capacity of Chlorine for Transporting Plutonium Tetrachloride Vapor During Reaction of U3O8-PuO2 with Carbon Tetrachloride

Description: Report issued by the Oak Ridge National Laboratory discussing thermodynamic calculations of nuclear fuels. As stated in the introduction, "the equations developed in this report could be used to calculate the capacity of chlorine for transporting plutonium tetrachloride" (p. 2). This report includes tables, and illustrations.
Date: October 1964
Creator: Gens, T. A.
Partner: UNT Libraries Government Documents Department

Electronic Distribution Functions and Thermodynamic Properties at High Temperatures

Description: Report issued by the Argonne National Laboratory discussing the thermodynamics and electronic distribution of high temperatures. As stated in the introduction, "in the present paper, a model for computing is described which takes into account in detail the interactions between bound electrons and the average interaction of the bound electrons with the free ones" (p. 4). This report includes tables, and illustrations.
Date: May 1953
Creator: Brachman, Malcolm K. & Meyerott, Roland E.
Partner: UNT Libraries Government Documents Department