By J. Macinko, D. B. Chelton, J. Dean (auth.), K. D. Timmerhaus (eds.)
By well known request, the nationwide Bureau of criteria was once back a number to a convention on cryogenic engineering on August 19-21, 1957. comparable conferences have been held right here in 1954 and 1956. The recognition of over 40 papers for this convention used to be definitely an indication of the expanding job and curiosity during this engineering box. There turns out no doubt that it'll keep growing, justifying the necessity for annual conferences. To make the lawsuits extra fascinating an test was once made to incorporate up to attainable of the overall dialogue which each one paper. to acquire person reprints of someone specific paper, please touch the authors without delay. 1957 CRYOGENIC ENGINEERING convention COMMITTEE B. W. Birmingham nationwide Bureau of criteria S. C. Collins Massachusetts Institute of expertise E. F. Hammel Los Alamos medical Laboratory R. B. Scott nationwide Bureau of criteria ok. D. Timmerhaus collage of Colorado W. T. Ziegler Georgia Institute of expertise i ACKNOWLEDGMENTS The 1957 Cryogenic Engineering convention Committee gratefully recognizes the continuing help and curiosity of the subsequent enterprises who've made the 1957 Cryogenic Engineering convention and the booklet of this court cases attainable. L' Air Liquide Air items, Inc. Allison department, basic Motor s American Messer company Aro apparatus company Beech plane company Bell plane Boeing plane corporation Cambridge company Convair Curtiss-Wright company Garrett company normal electrical corporation Herrick L. Johnston, Inc. Hofman Laboratories Linde corporation A. D. Little, Inc.
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Extra resources for Advances in Cryogenic Engineering: Proceedings of the 1957 Cryogenic Engineering Conference, National Bureau of Standards Boulder, Colorado, August 19–21, 1957
Ft. 17 Heat exchange AT' s Main expansion valve Expansion engine Rectification column system 1. 18 nil 1. 91 1. 31 +1. ) nil 1. 44 +1. 80 Reversible work of separation and liquefaction A - I (A) Irreversibilities . 2 kw. hr. /1000 cu. ft. 1 kw. hr. /1000 cu. ft. liquid oxygen produced. Note that the largest difference in irreversibility between any individual component in the actual and ideal cycles is in the expansion engine, although the efficiency of -39- the practical engine (calculated on the basis of actual enthalpy drop divided by the enthalpy drop for isentropic expansion) is approximately 80 per cent.
It may be concluded that it is indeed possible to approach as closely as desired to reversible conditions by increasing the number of plates and the number of stepwise adjustments of heat flow. Effect of Feed Condition In all of the preceding calculations, the feed to the reversible column was considered to be a saturated vapor. It has been stated in the literature that for this particular ternary mixture there exists an optimum condition for which the flow of heat to be transferred to the fluids being separated is a minimum when the feed is initially cocurrently and reversibly condensed to 60 per cent liquid before entering the reversible separation column.
IF F06'R~ ~~ I I V- ~. 0 r. 0 A 17 IiV"' c;. J L I I / ~~ J L I I ~ I-t- ~( I B ~RO :ES S c: AS .... 0 ENTROPY, S,Btu/(ibOR) foy REFRIGERANT GAS Figure 5, Multiple expander cycle Performance of low temperature gas liquefaction plant b BATTERY OF COMPRESSORS, Psu. INTERCOOLERS. AND AFTERCOOLERS To ~---~~~~~~~~~---~ Pdi TWO J (f) 0::: ""00: z::» a c h u. ,,)( "" w F e v COOLER A Figure 6, Multiple expander cycle Performance of low temperature gas liquefaction plant -28- As shown here, the gas has a constant specific heat over the range of temperature ~rom 500 0 to 150 0 R, and liquefaction occur s at constant temperature of 1500R.
Advances in Cryogenic Engineering: Proceedings of the 1957 Cryogenic Engineering Conference, National Bureau of Standards Boulder, Colorado, August 19–21, 1957 by J. Macinko, D. B. Chelton, J. Dean (auth.), K. D. Timmerhaus (eds.)