By T. M. Flynn, C. N. Smith (auth.), K. D. Timmerhaus (eds.)
1971 marked the 1st yr when you consider that 1956 that the once a year Cryogenic Engineering convention used to be no longer held. as an alternative, the Cryogenic Engineering convention gave its complete help to the XIII overseas Congress of Refrigeration by means of operating with Commissions I and II of the foreign Institute of Refrigeration to arrange the cryogenic periods for those commissions. the entire papers provided on the foreign Congress of Refrigeration might be released by way of the IIR as a part of the lawsuits of that assembly. although no Cryogenic Engineering convention used to be held in 1971, it grew to become particularly obtrusive to the convention Board that there have been enough advances in cryogenic engineering to warrant the e-book of quantity 17 of the Advances in Cryogenic Engineering. quantity 17 offers the advances during this very important box by way of bringing jointly in a single quantity the various major papers which were awarded at a number of technical conferences around the nation through the latter 1/2 1970 and the 1st a part of 1971. moreover, a number of authoritative assessment papers were ready through invitation of the Cryogenic Engineering convention Board.
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Additional resources for Advances in Cryogenic Engineering: A Collection of Invited Papers and Contributed Papers Presented at National Technical Meetings During 1970 and 1971
Carbon dioxide is usually not over 1 to 2 % but there are cases where the concentration may be as much as 50 %or more; such concentrations are not of concern in the present discussion. From the standpoint of helium production, 98 % or more of the gas consists of impurities as far as the final product is concerned. The common processes of helium recovery from natural gas yield a crude helium of about 60 to 70 % helium with nitrogen as the main impurity, and with small concentrations of hydrogen and methane and traces of neon.
J. W. Dean, A Tabulation of the Thermodynamic Properties of Normal Hydrogen from Low Temperatures to 540 R and from 10 to 1500 PSIA, NBS Tech. Note 120A (June 1962). 23. H. M. Roder, L. A. Weber, and R. D. Goodwin, Thermodynamic and Related Properties of Parahydrogen from the Triple Point to 100 K at Pressures to 340 Atmospheres, NBS Monograph 94 (Aug. 10, 1965). 24. H. M. Roder and R. D. Goodwin, Provisional Thermodynamic Functions for Para-Hydrogen, NBS Tech. Note 130 (Dec. 1961). 2S. C. F. Sindt and D.
J. S. Swearingen, Am. Gas. Journal, 47: 124 (1968). A-4 REMOVAL OF IMPURITIES FROM GASES TO BE PROCESSED AT LOW TEMPERATURES* B. F. Dodget Yale University New Haven, Connecticut INTRODUCTION All gases of industrial importance are mixtures (solutions) of two or more components and the processes with which this paper is concerned have as their objective the separation of one or more of the components in a purified form either as a liquid or a gas. The undesirable components are classed as impurities and their concentration may vary over very wide limits from fractions of a part per million to over 50 %(by volume)and even approaching 100 %in the case of helium production.
Advances in Cryogenic Engineering: A Collection of Invited Papers and Contributed Papers Presented at National Technical Meetings During 1970 and 1971 by T. M. Flynn, C. N. Smith (auth.), K. D. Timmerhaus (eds.)