RU1787369C - Device for thermal protection of plants - Google Patents

Abstract

Usage: the invention relates to agriculture. The inventive device for thermal protection of plants contains nozzles 1 and 2 for supplying and draining water, a contact chamber 3. At a low temperature of atmospheric air, water is supplied through the nozzle 1 to the chamber 3, the fan 5 is turned on, and air is sucked from the ends 8 of the horizontal ducts 7 The air is sucked into the device in the cross section as far as possible from the device, in the middle between adjacent devices, where the air has a minimum temperature. 2 ill.

Description

The invention relates to agriculture and can be used to protect thermophilic plants, including lemon, from frost.

The purpose of the invention is to increase the efficiency of heat transfer.

In FIG. 1 shows the proposed device; Fig. 2 is a diagram of the mutual arrangement of a group of devices.

The device comprises nozzles 1 and 2 for supplying and discharging water, a heat exchange unit in the form of a contact nozzle chamber 3, a pipe 4 with a fan 5 for pumping air, and a flat channel 6 for exiting heated air into the air. soil surface. The upper end of the pipe 4 for pumping air is connected to horizontal ducts 7, the ends 8 of which are placed in the middle between adjacent devices,

The device is also equipped with an overlap 9.

The device operates as follows.

At a low temperature of atmospheric air, critical for the plants to be protected, water is supplied through the pipe 1 to the contact chamber 3, the fan 5 is turned on and the air is sucked from the ends 8 of the horizontal ducts 7. In the packing chamber 3, countercurrent contact occurs and intense heat exchange between the air and dripping down the nozzle with warmer water. The cooled water leaves the heat exchanger assembly through the nozzle 2, and the heated air through the flat channel 6 enters the plant location zone, thereby creating a warm microclimate in the building. Air is sucked into the device in a cross section as far as possible from the device (in the middle between adjacent devices), where the air has a minimum temperature.

Thus, in the heat exchange unit, the heat exchange process is carried out at the maximum possible temperature difference between water and air, and thereby more fully realized the capabilities of the device

WITH

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VA to create thermal power. At the same time, the boundaries of the air circulation around the device are noticeably expanding.

As preliminary estimates show, the use of the proposed device will increase the thermal efficiency by about 30-40%, which in turn will give the opportunity to reduce the number of applications. 11e: devices. For 1 ha, the released funds will amount to 10-15 thousand rubles.

Claims (1)

SUMMARY OF THE INVENTION A device for thermal protection of plants, comprising wells for collecting and discharging ground water, connected by pipelines through a pump and a heat exchanger, while the upper part of the well for draining ground water is coaxially fixed with its the lower end of the air injection pipe, in the upper part of which a fan is installed, the heat exchanger is in the form of a nozzle contact device and placed in the annular zone between the wall of the injection pipe and the wall of the well, and an annular plate is fixed on the middle part of the air injection pipe the formation of a flat channel for the exit of air along the surface of the soil, and the outer diameter of the plate is larger than the diameter of the well for draining groundwater, characterized in that, in order to increase efficiency heat exchange, it is equipped with horizontal ducts connected to the upper ends of the pipe for pumping air, the opposite ends of which are placed in the middle between adjacent devices. / 5 t  g 8