Inversion temperatures and pressures for cryogenic gases and their mixtures

✍ Scribed by R.D Gunn; P.L Chueh; J.M Prausnitz

• Publisher: Elsevier Science
• Year: 1966
• Tongue: English
• Weight: 477 KB
• Volume: 6
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(66)90128-7

✦ Synopsis

JOULE-THOMSON expansion is used widely for refrigeration and for liquefaction of gases; under certain conditions, however, this type of expansion may produce heating rather than cooling. Determination of these conditions is important, therefore, in the design of cryogenic processes. At a certain temperature, there is a pressure which, when exceeded, gives a negative Joule-Thomson coefficient resulting in a temperature increase upon isenthalpic expansion; at lower pressures, the Joule-Thomson coefficient is positive and cooling results from expansion at CRYOGENICS-