Snowmaking process and apparatus

Refrigeration – Processes – Congealing flowable material – e.g. – ice making

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62 74, 62347, 239 22, F25C 304

Patent

active

049169114

ABSTRACT:
A process and apparatus for producing snow which provide a stream of pressurized air and pressurized water; combine the air stream and the water stream to cool the water and provide a first stream of a mixture of the air and water; thereafter aspirate a portion of the air in a counter-flow direction from air into the first stream and mixing therewith, to form a second stream of a mixture of air and water, the second stream being coaxial with the first stream; and disperse the second stream into freezing temperature atmosphere to freeze the water in the second stream and produce snow. In the preferred embodiment, a central stream of water of pressure of at least 300 psig is combined with air of pressure no more than about 30 psig coaxially combined and creating the first mixture. Ice crystals are utilized as a nucleating agent to promote the freezing of water in the second stream.

REFERENCES:
patent: 2571069 (1951-10-01), Shearman
patent: 3010660 (1961-11-01), Barrett
patent: 3301485 (1967-01-01), Tropeano et al.
patent: 3464625 (1969-09-01), Carlsson
patent: 3494559 (1970-02-01), Skinner
patent: 3945567 (1976-03-01), Rambach
patent: 3969908 (1976-07-01), Lawless et al.
patent: 4004732 (1977-01-01), Hanson
patent: 4214700 (1980-07-01), Vanderkelen et al.
patent: 4223836 (1980-09-01), Eager

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