CO.sub.2 Snow producer with heat exchanger

Details CO.sub.2 Snow producer with heat exchanger CO.sub.2 Snow producer with heat exchanger

1982-03-08

1983-05-03

Capossela, Ronald C.

Refrigeration

Storage of solidified or liquified gas

With conservation of cryogen by reduction of vapor to liquid...

62388, 62514R, F17C 300

Patent

active

043816495

ABSTRACT:
A method and apparatus is disclosed whereby liquid refrigerant, such as liquefied carbon dioxide, is discharged from the outlet end portion of a supply line whose inlet end portion is communicated with a source of liquefied carbon dioxide under pressure and wherein the discharge of liquefied carbon dioxide from the outlet end portion of the line is effected through a spray head directed toward surface portions upon which the spray discharge of liquefied carbon dioxide may impinge for conversion to carbon dioxide snow and carbon dioxide gas and further wherein an intermediate portion of the supply line is disposed in good heat transfer relation with the aforementioned surface portions for cooling the intermediate portion of the supply line to a temperature closely approaching the triple point temperature (approximately minus 69.degree. F.) with the pressure of the liquefied carbon dioxide being discharged from the spray head being approximately 75 psi absolute. The rate of flow of the liquefied carbon dioxide into the inlet end of the line is regulated according to the flow of liquefied carbon dioxide through the spray head in a manner such that the pressure of the liquefied carbon dioxide at the spray head is maintained at approximately 75 psi absolute.

REFERENCES:
patent: 2247850 (1941-07-01), Rayburn
patent: 2483064 (1949-09-01), Reich
patent: 2731807 (1956-01-01), Allyne
patent: 2791888 (1957-05-01), Vani
patent: 3561226 (1971-02-01), Rubin
patent: 3695056 (1972-10-01), Glynn et al.
patent: 3815377 (1974-06-01), Tyree, Jr.

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