Advances in Cryogenic Engineering: Proceedings of the 1960 by W. E. Moeckel (auth.), K. D. Timmerhaus (eds.)

By W. E. Moeckel (auth.), K. D. Timmerhaus (eds.)

The 1960 Cryogenic Engineering convention Committee is happy to provide the papers of the 1960 Cryogenic Engineering convention. dialogue of the papers, anywhere on hand, has additionally been incorporated to make the papers extra necessary and engaging to the reader. This annual assembly once more has been held in Boulder, Colorado. Many delegates will keep in mind that related conferences have been held in Boulder in 1954, 1956 and 1957. notwithstanding, this yr, as a result of persisted progress of this convention, the nationwide Bureau of criteria Boulder Laboratories used to be joined through the school of Engineering of the collage of Colorado in internet hosting this 6th nationwide con­ ference. The Cryogenic Engineering convention Committee is worked up to recognize the aid of a piece of writing Committee which contributed priceless tips within the tricky and thankless job of screening the initial papers and in addition re­ viewing the ultimate drafts. This committee headedby R. B. jacobs, who additionally served as chairman for the convention Committee, consisted of R. W. Arnett, D. B. Chelton, R. J. Corruccini, T. M. Flynn, R. H. Kropschot, R. M. McClintock, A. F. Schmidt, L. E. Scott and W. A. Wilson.

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Additional resources for Advances in Cryogenic Engineering: Proceedings of the 1960 Cryogenic Engineering Conference University of Colorado and National Bureau of Standards Boulder, Colorado August 23–25, 1960

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2S[ =:~! 5'01 22 kt F' ....... - , - ... d NUJO . _""' / K B r an~ tPrP"·_~.. "'/ ,,''''...... e_.. 751 100 I -::J tI>- tI>- > 48 W. P. Power It is possible that the larger-particle-size aluminum powder was more effectively jammed inside of the large interstices between the 8-mesh silica grains and did not form metal bridges as readily as did the finer metal powder. Thermal conductivities of similar values to those reported during the last Cryogenic Engineering Conference for aluminum powder and Cab- O-Sil H-5 [I} were attained by combining ground Santocel A with Alcoa 422 aluminum powder (Table 11).

K Small sampie Btu-in. ftLhr-oF Liquid in dewar 1" Thick . . . . . 00025" Th. Al Foil .. 008" Dex. Paper ... 0032 Nitrogen 1/4" Thick . . • . . 002" H-19 Al . . . •. 0012 Nitrogen Insulation Table III. Test Results on 35Liter Dewar Liquid Insulation Total heat 1055, Btujhr Nitrogen 1 in. 002 in. 4 A-3 37 Fig. 4. Disassembled 35-liter container. the edge of the insulation, where the vacuum is read, and the central part of it may be high. 10- 3 mm Hg is the true vacuum for the central part of the insulation in the run with liquid nitrogen, the total heat transport increases by 10 Btu/hr and becomes identical with the total heat loss recorded during the test.

Buffham, B. M. Bailey, ** and J. M. Geist Air Products, Inc. Allentown, Pennsylvania Introduction This study was undertaken because of the concern over the influence of backdiffusion (defined as molecular diffusion counter to the flow of a fluid in a conduit) on the contamination of cryogenic liquids storedfor long periods. There appeared to be a possibility that contamination of stored liquid oxygen, for example, might occur because of back-diffusion of carbon dioxide and water through the venting apparatus.

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