Advances in Cryogenic Engineering: Proceedings of the 1954 by F. G. Brickwedde (auth.), K. D. Timmerhaus (eds.)

By F. G. Brickwedde (auth.), K. D. Timmerhaus (eds.)

More than sixty years have elapsed seeing that Linde first liquefied air on a advertisement scale and ready the way in which for setting apart of different gaseous combinations. His paintings, even if, used to be no longer of an remoted nature. It used to be conceived eighteen years after air had, for the 1st time, been liquefied within the laboratory by way of Pictet in Geneva and Caillete in Paris. Linde's liquefaction of air used to be through Dewar's paintings on hydrogen liquefaction in London and by means of the establishing at Leiden of Kamerlingh Onnes's recognized low temperature laboratory. those advances in low temperature or cryogenic know-how have ended in the institution of a totally new and thriving undefined. Cryogenic engineering is anxious with constructing and enhancing low temperature techniques, concepts, and gear; selecting the actual homes of structural and similar fabrics utilized in generating, preserving, and utilizing low temperatures; and the sensible software of low temperature ideas and methods. those low tempera­ tures are under these frequently encountered in refrigerating engineering. it is extremely tricky to assign a distinct temperature which serves to divide refrigerating engineering from cryogenic engineering. A temperature less than _lSOoC, in spite of the fact that, is usually linked to cryogenic engineering.

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Additional info for Advances in Cryogenic Engineering: Proceedings of the 1954 Cryogenic Engineering Conference National Bureau of Standards Boulder, Colorado September 8–10 1954

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A diaphragm type contents gage actuated by the liquid pressure head in the container is provided to indicate the amount of oxygen available since a system pressure indicator would give a nearly 32 constant reading until all the liquid was gone. A lightly loaded check valve is provided in the liquid leg of the system to smooth out pressure variations sometimes caused by the breathing or pulsating type of load on the system. Figure 2 shows two units designed to carry eight liters of liquid oxygen in a bomber type of aircraft.

22 A-I AN EFFICIENT VACUUM-JACKETED LIQUID NITROGEN OR LIQUID OXYGEN STORAGE VESSEL N. C. Hallett, H. W. Altman, M. L. Yeager and C. L. Newton Herrick L. Johnston, Inc. Columbus, Ohio The Herrick L. Johnston 6000 liter liquid oxygen or nitrogen vessel is manufactured for the storage, transfer and transport of liquefied gases. The vessel is skid-mounted and includes an instrumentation housing at one end, where all operations are performed. The dewar can be used as a stationary vessel or can be truck or trailer mounted.

W. Altman, M. L. Yeager, N. C. Hallett and L. D. Wagner Herrick L. Johnston, Inc. Columbus, Ohio The Johnston design of air tactical dewar consists of an inner stainless steel shell, with a capacity of 750 liters of liquid hydrogen; a liquid nitrogen reservoir, with a capacity of 500 liters. built into the dewar to maintain a copper radiation shield at liquid nitrogen temperature; an outer shell of stainless steel; and a built-in vacuum pump and instrumentation. One end of the dewar is counterweighted so that it hangs in a horizontal position from its one suspension lug, and the center of gravity remains constant to within 3/4 of an inch throughout nitrogen boil-off.

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