Snow making using low pressure air and water injection

Details Snow making using low pressure air and water injection Snow making using low pressure air and water injection

2006-10-03

2006-10-03

Scherbel, David A. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Processes

Of weather control or modification

C239S014200, C239S433000, C239S419000, C239S434000, C239S424000, C239S418000

Reexamination Certificate

active

07114662

ABSTRACT:
Snow is made, for use on ski slopes and the like, using compressed air at a pressure substantially less than 95 psig, preferably around 30 psig. The air is provided to a snow making head or snow gun, where it is flowed through an air nozzle having effective diameter D. The air stream intersects a water droplet stream with angle A and at distance L from the air nozzle. Preferred angle A is in the range 70 to 110 degrees. The preferred ratio L/D is in the range 9:1 and 22:1. High pressure air from existing compressor systems is reduced to a desired substantially lower pressure by a central choked flow throttle upstream of an aftercooler, or by multi-stage throttles located near the snow making head. Water is added to the compressed air to substantially improve snow making, particularly when ambient relative humidity is low.

REFERENCES:
patent: 3952949 (1976-04-01), Dupre
patent: 5004151 (1991-04-01), Dupre
patent: 5810251 (1998-09-01), McKinney
patent: 5823427 (1998-10-01), Dupre et al.
patent: 5884841 (1999-03-01), Ratnik et al.
patent: 6129290 (2000-10-01), Nikkanen
patent: 6543699 (2003-04-01), Dupre
patent: 6547157 (2003-04-01), Jervas
Product Sheet, Whittier Canada Enterprise Inc. 12: page, date unknown.
Product Sheets, Lenko Co. (4) pages, date unknown.

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