Scientific and Technical Aerospace Reports


Book Description

Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.




NBS Technical Note


Book Description
















Advances in Cryogenic Engineering


Book Description

With the 1975 Cryogenic Engineering Conference this se ries enters the third decade of presenting the latest advances in the field of cryogenic engineering. The 1975 Cryogenic Engineering Conference also marked the first time the meeting had been held outside the territorial limits of the United States. Based on the enthusiastic response of the attendees and the exemplary hospitality of the Canadian hosts, it certainly will not be the last meeting to convene beyond the confines of the fifty states. The Cryogenic Engineering Conference Board is extremely grateful to The Royal Military College of Canada and Queen's University for the invitation to hold this meeting in Kingston, Ontario, Canada. The assistance of A. C. Leonard and his staff added immeasurably in making this visit to Canada both a pie asant and a memorable one. The 1975 Cryogenic Engineering Conference was the first meeting of this group on the new biennial conference schedule. Since the last conference in 1973, the Western Hemisphere has experienced the impact of various energy shortages. Thus, it was appropriate that the theme "Cryogenics Applied to Natural Resource Management" for this Conference was not only timely but also an opportunity for the scientific community engaged in cryogenic activities to review the role of cryogenics in meeting these new challenges and problems facing the energy-deficient nations of the world. The Cryogenic Engineering Conference was also pleased to have the Interna tional Cryogenic Materials Conference join them in this meeting.




Characterization and Properties of Petroleum Fractions


Book Description

The last three chapters of this book deal with application of methods presented in previous chapters to estimate various thermodynamic, physical, and transport properties of petroleum fractions. In this chapter, various methods for prediction of physical and thermodynamic properties of pure hydrocarbons and their mixtures, petroleum fractions, crude oils, natural gases, and reservoir fluids are presented. As it was discussed in Chapters 5 and 6, properties of gases may be estimated more accurately than properties of liquids. Theoretical methods of Chapters 5 and 6 for estimation of thermophysical properties generally can be applied to both liquids and gases; however, more accurate properties can be predicted through empirical correlations particularly developed for liquids. When these correlations are developed with some theoretical basis, they are more accurate and have wider range of applications. In this chapter some of these semitheoretical correlations are presented. Methods presented in Chapters 5 and 6 can be used to estimate properties such as density, enthalpy, heat capacity, heat of vaporization, and vapor pressure. Characterization methods of Chapters 2-4 are used to determine the input parameters needed for various predictive methods. One important part of this chapter is prediction of vapor pressure that is needed for vapor-liquid equilibrium calculations of Chapter 9.