Fluid sprinkling – spraying – and diffusing – Processes – Of weather control or modification
Patent
1973-11-28
1977-08-02
Love, John J.
Fluid sprinkling, spraying, and diffusing
Processes
Of weather control or modification
239 14, A01G 1500
Patent
active
040391442
ABSTRACT:
Control of the temperature and humidity of an environment is obtained by injecting a large volume of water droplets into the air with a major portion of the water droplets being in the range of from about 5 to 50 microns in diameter and with an average diameter in the range of from about 10 to 30 microns. When temperatures are low a fog of water droplets essentially opaque to infrared is provided as a cover to crops for preventing frost damage. Crop protection may be poor in borders of fields where cold air drifts in from surrounding areas. Accordingly, fog generators are placed 25 feet or more above the surface to take advantage of temperature inversions. A water curtain may also be used with large drops of warm water falling from a height of about 15 feet to heat and humidify air drifting into the foggy region.
Fog having droplets in the above-mentioned size range is produced by impacting a stream of water having a diameter in the range of from about 125 to 400 microns at a velocity in excess of about 135 feet per second against a smooth, solid surface. A nozzle having an orifice in the range of from about 125 to 400 micron diameter and operated at a pressure in excess of about 350 psi is used to create a water jet for impact on the surface. A complete system involves a large plurality of such nozzles supplied with water substantially free of particles having a size larger than about 1/10 the diameter of the orifice, and at a height in excess of about 25 feet above the surface so that a continuous line of fog is generated in a temperature inversion. The quantity of water added is preferably in excess of about 15 grams per meter of a continuous line along the edge of the area to be protected per second.
REFERENCES:
patent: 3584412 (1971-06-01), Palmer
Love John J.
Mee Industries, Inc.
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