Thermal reed design for controlling the temperature of plants

Details Thermal reed design for controlling the temperature of plants Thermal reed design for controlling the temperature of plants

1984-06-15

1987-05-05

Hafer, Robert A.

Plant husbandry

Frost preventing

A01G 1300

Patent

active

046621059

ABSTRACT:
Disclosed are a device and a method for utilizing the thermal energy in the soil to protect against damage to plants, such as citrus trees, from cold weather and to promote the growth of plants. The device comprises a heat pipe having an evaporator section which extends into the soil in the vicinity of the root system of the plants and extracts heat from the soil. The heat is then transferred to a condenser section which extends above ground and radiates and convects the heat to the plant. This also refrigerates the root system of the plant to extend the dormancy period. Also disclosed is a method for providing a supply of water to a plant, comprising the use of a heat pipe to create a temperature gradient around the root system of the plant, whereby water from the surrounding soil is caused to flow toward the plant.

REFERENCES:
patent: Re30599 (1981-05-01), Yagi et al.
patent: 3274769 (1966-09-01), Reynolds
patent: 3828845 (1974-08-01), Waters
patent: 4030549 (1977-06-01), Bouck
patent: 4444249 (1984-04-01), Cady
patent: 4452303 (1984-06-01), Bontje et al.

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