A Study of the Nucleate Boiling of Liquid Nitrogen, Liquid Argon, and Liquid Carbon Monoxide from Atmospheric to Near the Critical Pressure PDF Download
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Author: Craig Bauer Johler
Publisher:
ISBN:
Category : Carbon monoxide
Languages : en
Pages : 132
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Book Description
"The nucleate boiling curves of three corresponding states liquids (nitrogen, argon, and carbon monoxide) were analyzed. Each liquid was studied at pressures ranging from atmospheric pressure to near the critical pressure. Saturated liquid boiling was conducted from cylindrical heaters in the horizontal position having diameters of 0.75 inches and lengths of three inches. Liquid nitrogen was boiled from four different gold heat transfer surfaces; argon and carbon monoxide were boiled from the same gold surface. The critical heat flux correlation of Cobb and Park was further verified by agreement with the experimental critical heat flux ratios obtained in this investigation. It was demonstrated that the critical heat flux is a function of the heat transfer surface; and that this dependence on surface conditions should be provided for in maximum heat flux correlations. Nucleate boiling curves obtained for liquid nitrogen illustrated that a change in boiling heat transfer surface affects both the slope and shape of nucleate boiling curves. The nucleate boiling of carbon monoxide was observed to show partial film boiling along with low critical heat fluxes. Measured over a wide range of reduced pressures, the liquid argon critical heat fluxes were approximately 24 percent higher than liquid nitrogen critical heat fluxes for a given surface. When compared to the critical heat fluxes of liquid carbon monoxide, the critical heat fluxes of liquid argon and liquid nitrogen averaged 176 and 130 percent larger in magnitude respectively"--Abstract, leaf ii.
Author: Craig Bauer Johler
Publisher:
ISBN:
Category : Carbon monoxide
Languages : en
Pages : 132
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Book Description
"The nucleate boiling curves of three corresponding states liquids (nitrogen, argon, and carbon monoxide) were analyzed. Each liquid was studied at pressures ranging from atmospheric pressure to near the critical pressure. Saturated liquid boiling was conducted from cylindrical heaters in the horizontal position having diameters of 0.75 inches and lengths of three inches. Liquid nitrogen was boiled from four different gold heat transfer surfaces; argon and carbon monoxide were boiled from the same gold surface. The critical heat flux correlation of Cobb and Park was further verified by agreement with the experimental critical heat flux ratios obtained in this investigation. It was demonstrated that the critical heat flux is a function of the heat transfer surface; and that this dependence on surface conditions should be provided for in maximum heat flux correlations. Nucleate boiling curves obtained for liquid nitrogen illustrated that a change in boiling heat transfer surface affects both the slope and shape of nucleate boiling curves. The nucleate boiling of carbon monoxide was observed to show partial film boiling along with low critical heat fluxes. Measured over a wide range of reduced pressures, the liquid argon critical heat fluxes were approximately 24 percent higher than liquid nitrogen critical heat fluxes for a given surface. When compared to the critical heat fluxes of liquid carbon monoxide, the critical heat fluxes of liquid argon and liquid nitrogen averaged 176 and 130 percent larger in magnitude respectively"--Abstract, leaf ii.
Author: Calvin B. Cobb
Publisher:
ISBN:
Category :
Languages : en
Pages : 152
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 266
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Book Description
Author: Philip George Kosky
Publisher:
ISBN:
Category :
Languages : en
Pages : 162
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Book Description
Author: K. D. Timmerhaus
Publisher: Springer Science & Business Media
ISBN: 1475705131
Category : Science
Languages : en
Pages : 494
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Book Description
1969 marked the return of the Cryogenic Engineering Conference, now affiliated with the National Academy ofSciences through the Division ofEngineering, National Research Council, to the University of California at Los Angeles. As in 1962, the Cryogenic Engineering Conference gratefully acknowledges the assistance of UCLA, its Engineering and Physical Seien ces Extension Division, and in particular J. Dillon, S. Houston, H. L. Tallman, and their stafffor serving as hosts to the 1969 Cryogenic Engineering Conference. The National Academy of Sciences is a private honorary organization of more than 700 scientists and engineers elected on the basis of outstanding contributions to knowledge. Established by a Congressional Act of Incorporation, the Academy works to further science and its use for the general welfare by bringing together the most qualified individuals to deal with scientific and technological problems of broad significance. The National Research Council was organized as an agency of the National Academy of Sciences in 1916, to enable the broad community of U.S. scientists and engineers to associate their efforts with the Iimited membership of the Academy in service to science and the nation. The Division of Engineering is one of the eight major Divisions into which the National Research Council is organized for the conduct of its work. Its membership includes representatives of the nation's leading technical societies as weH as a number of members-at-Iarge. The Cryogenic Engineering Conference is an organization of the Division of Engineering.
Author: Robert J. Simoneau
Publisher:
ISBN:
Category : Film boiling
Languages : en
Pages : 32
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Book Description
Author: Satish R. Parikh
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 170
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Book Description
"The object of this investigation was to study the effect of micro-roughness, a thin layer of oil, and infra-red radiations on the cylindrical heat transfer surface of copper, in liquid nitrogen and at atmospheric pressure during nucleate boiling. An attempt was made to find any possible effect of orientation of the heat transfer element on nucleate boiling. A number of different runs were taken with different degrees of roughness, and different orientation positions. Nucleate boiling has been found to be nearly independent of the heat transfer surface roughness and of orientation while strongly dependent on the chemical nature of the surface. Extremely high temperature differences were obtained in the nucleate boiling region by application of a thin layer of oil to the heat transfer surface. Temperature gradients in both the axial direction and the radial direction were found for the surface of the heat transfer element"--Abstract, leaf iii.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 730
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Book Description
Author: R. A. Rockow
Publisher:
ISBN:
Category : Fouling
Languages : en
Pages : 58
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Book Description
Author: Robert Edward Holtz
Publisher:
ISBN:
Category : Alkali metals
Languages : en
Pages : 48
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Book Description
An analysis has been conducted to predict the liquid superheats that will be required to initiate nucleate boiling in the alkali metals. The classical two-phase mechanical and thermal equilibrium equation is solved by applying a modeling of the behavior of the pressure in the liquid for water and the alkali metals. Curves are presented showing the liquid superheats required for nucleate boiling in sodium and potassium.
