SU1498431A1 - Method of heating up hothouse - Google Patents

Abstract

This invention relates to agriculture. The purpose of the invention is to improve the regulation of the greenhouse microclimate. Heat-heated water is accumulated in the mines during the non-heating period. During the temperature reduction, air is supplied from the greenhouse premises to the heated water mines, while water is pumped out from other mines located in the greenhouse room area. At the same time, due to the pressure difference in the aquifer of the soil, the water is heated and moves in the soil over the area of the greenhouse. Air mixed with water rises up through the pores of the soil, moisturizing and heating the soil. 2 hp ff, 1 ill.

Description

The invention relates to the field of agriculture, in particular to the cultivation of greenhouse.

The purpose of the invention is to improve the regulation of the greenhouse microclimate.

The drawing shows the scheme of heating greenhouses.

Under the premises of the greenhouse 1 in the ground they have a battery 2 of heat containing mines 3 and 4 with hot water, located in the central part of the battery 2, mines 5 and 6 of cold water located along the periphery of battery 2 (along the periphery of the area of the underground aquifer used to store heat). Pump 7 injection and pump 8 pumping through valves 9-14 connected to the mines 3-6 and the source 15 of heat. The air compressor 16 is connected through a valve 17 to a greenhouse 1, through a valve 18 to the atmosphere, through a valve 19 to shafts 4 and 3 of hot water, which are connected to the underground air distributor 20.

The greenhouse is heated as follows.

During a non-heating season, the waste heat of the source 15 is surpassed by cold water extracted from the peripheral part of the accumulator 2 by means of a pump 8 pumping out through mines 5 and 6, heated in the source 15 waste heat by pump 7 pumping through mines 3 and 4 of hot water pumped into the underground battery 2. At the same time, the valves 9, 11, 12 and 14 are open.

In the heating season, the heating of the soil of the greenhouse 1 is carried out not by supplying heated water to the battery 2 in the greenhouse heating devices, but due to the thermal conductivity of the soil layers located above the underground battery 2. To increase the intensity of the heat sink from

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the underground battery 2 heats up the air compressor 16, the air is supplied through the shafts 3 and 4 to the underground battery 2. At the same time, the valves 17 and 19 are opened. The air is heated and humidified in the underground battery 2, then rises through the pores of the soil and moistens the soil of the greenhouse 1. In the presence of an impermeable roof near the underground aquifer, the battery 2 is supplied with a subsurface air distributor 20, which is a tubing system coming out of the casing mines 3 and 4 in the underground reservoir horizon and a number of artificially created channels in the roof.

If it is necessary to reduce the preheating of the soil in the greenhouse 1, the valves 12 and 14 are closed and the heat source 15 is turned off. The valves 9 and 10 are closed, and the valves 10 and 13 are opened. At the same time, the cold water from the shaft 6 is pumped out by the pump 8, pumped through the valve 13 to the inlet of the pump 7, and pumped into the cold water shaft 5. In the underground heat accumulator 2 (in the permeable underground aquifer), water is directed from the mine 5 to the mine 6 and the volume of hot water is displaced from under the greenhouse 1 towards the mine 6 located at some distance from the greenhouse 1 cold water. After displacing the volume of hot water to enhance the cooling of the soil of the greenhouse 1, the valve 18 opens, the compressor 16 delivers cold air from the atmosphere to the shafts 3 and 4,

The location of the hot area of the underground battery 2, the heat directly below the greenhouse 1 at a depth equal to the thickness of the warming up above the underground battery 2, the heat of the soil during the non-heating season, ensures the supply of heat waves under the greenhouse 1 to the beginning of the heating season.

The method of heating the greenhouse allows you to simultaneously warm and humidify the air of the greenhouse and warm, moisten and aerate the soil in the greenhouse, and when implementing the proposed method it is possible to use highly mineralized groundwater.

Claims (3)

1. A method of heating a greenhouse, including the accumulation of heat in the mines during the non-heating period and its use in a period of low temperatures by circulating atmospheric air through the layers of soil, which is aimed at improving the microclimate control of the greenhouse and heating the soil and air The latter is carried out by the directional movement of the coolant in the soil layers by creating a pressure difference in the aquifer over the area of the greenhouse. 2. Method POP1, characterized in that water accumulated in the mines during the non-heating period is used as the coolant. 3. Method according to paragraphs. 1 and 2, characterized in that air sweat is supplied to the chambers that accumulate coolant from the atmosphere of the room.  Iff w - HXh