Dry ice sublimation cooling system utilizing a vacuum

Details Dry ice sublimation cooling system utilizing a vacuum Dry ice sublimation cooling system utilizing a vacuum

1997-06-13

1998-08-04

Capossela, Ronald C.

Refrigeration

Processes

Treating an article

62381, 62388, F25D 1306

Patent

active

057877165

ABSTRACT:
A method and apparatus for a dry ice sublimation system is shown. The dry ice is placed in a vacuum chamber and a vacuum is drawn on the vacuum chamber. As the dry ice sublimates, the cold sublimated gas is fed into a cooling chamber which contains products to be cooled. The temperature of the cooling chamber may be varied inversely with the vacuum in the vacuum chamber, which inversely varies the sublimation temperature of the dry ice and hence the temperature of the sublimated gas. Automatic feed systems may continuously supply product to be cooled or dry ice or both. A bypass around the vacuum chamber allows a turbulence to be created around the dry ice in the vacuum chamber to aid the rate of sublimation.

REFERENCES:
patent: 3163022 (1964-12-01), Hottenroth
patent: 5343715 (1994-09-01), Lang

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