Refrigerating plant using helium as a refrigerant

Details Refrigerating plant using helium as a refrigerant Refrigerating plant using helium as a refrigerant

1976-04-08

1977-09-20

Capossela, Ronald C.

Refrigeration

Plural paired different function refrigeration producing...

62514R, F25B 700

Patent

active

040488144

ABSTRACT:
The plant includes a precooling stage, a Joule/Thomson stage and a cryogenic load. The Joule/Thomson stage includes a pair of heat exchangers in which the helium emerging from the precooling stage is cooled by the return flow of helium. This stage also includes an expansion turbine between the heat exchangers to expand the high pressure helium to an intermediate pressure and an expansion element in which the helium is expanded to the liquefaction pressure. This expansion element is located upstream or downstream of the cryogenic load or between two parts of the cryogenic load.

REFERENCES:
patent: 3199304 (1965-08-01), Zeitz et al.
patent: 3360955 (1968-01-01), Witter
patent: 3375675 (1968-04-01), Trepp et al.
patent: 3611740 (1971-10-01), Giger
patent: 3878691 (1975-04-01), Asztalos

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