Hydrogen liquefiers with efficient heat exchangers

✍ Scribed by E.S. Borovik; I.F. Mikhailov; N.A. Kosik

• Publisher: Elsevier Science
• Year: 1964
• Tongue: English
• Weight: 253 KB
• Volume: 4
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(64)90075-x

✦ Synopsis

T HE use of liquid hydrogen has recently greatly increased. Liquid hydrogen is used in high vacuum condensation pumps, 1,2 to obtain high magnetic fields by means of coils cooled by liquid hydrogen, 3-5 in hydrogen bubble chambers, 6 etc. Simple and reliable liquefiers with sufficiently high output are required for satisfying liquid hydrogen requirements. In the end the problem of providing large economical liquefiers may only be solved by using turbo-expander devices. As an intermediate step, however, it is desirable to build large output machines working on the Joule-Thomson effect which are relatively simple. One should use all means for reducing the energy consumption of such machines, and also their size and weight. The most successful way of reducing the size is to use heat exchangers formed of different diameter tubes soldered to one another for heat contact, 7,s first used in a liquid hydrogen condensation pump. z This article describes liquefiers with these heat exchangers.