SU1340659A1 - Installation for creating microclimate in the hothouse - Google Patents

Abstract

The invention relates to heating systems and can be used in agriculture. The purpose of the invention is to reduce fuel consumption and expand the range of control actions to regulate the microclimate in the greenhouse. The installation is equipped with a secondary heat carrier heater 5 and reheating heat exchangers 6 and 16, in which the secondary and primary heat carrier are used as heating agent, air heating system 9, calciner 10 intermediate heat carrier. Systems 7 and 8 of the subsoil and subsoil heating of the greenhouse are connected in series to the circuit of the secondary coolant. For coordinated control of coolant flow rates, the installation is equipped with temperature sensors 29-33 installed in heating zones and recording valves 22-28 located on the input lines of the roofing 2, face 3, overground 7, subsoil 8 heating systems, heating the air 9 and dogre - heat exchangers 6 and 16, 1 h, p. f-ly, 1 silt, (L 13 yy 3fyx. f leifyx OO 4 O ate so f f k n /) ow / interv

Description

one

Itooriteine refers to heating systems and can be used in agriculture.

 the invention is to reduce fuel consumption by introducing the efficiency of using the heat of combustion products and expanding the range of the control of the SOCKETS to regulate the microclimate in the greenhouse.

The drawing shows a schematic image; a HGS installation.

The installation for creating microclients; a tim in the greenhouse contains a source of products of combustion) P1 - boiler I, systems 1, 1, 2 and 3 of the roofing and face of the heating of the table, respectively, connected to boiler 1, contact utilizer 4 and contact and surface heater 5, as well as the horse is a further heating heat exchanger 6, and systems 7 and 8 correspond to the air and subsoil heating of the greenhouse, which are successively included in the pyrcal secondary heat carrier pion circuit, the air conditioning system connected to the secondary agent in the secondary circuit heat transfer medium and communicated by air with calciner 10 installed in the bypass line with control gate 1 1, between; from system 9 and vent tors1m 2. Contact heat exchanger 4 contains a circuit 13 of the intermediate fuel Nos1 EjT i with pumps 14 and 1, The decarbo “congestion 10” is turned on, the system 8 of the subsurface heating of the greenhouse is equipped with a tenlomera {a nickname 16, included B secondary heat circuit (1 load. Circuit 17 of the primary coolant, in which the KOTI-J switch on | | Cheny: 1, heating system heating systems 2 and 3 and heat exchanger B, co, the secondary pump 13, the circuit 19 of the secondary coolant contains a Dirklinionny onC 1C, contour Ir1: 1 and the 24th Tetuio carrier in the heated::; grle 5 contains a pyruletion pump 21.

input lines of systems; rovering, frontal, ground and subsoil H-, obn1) Grevyva tlitsy, heating the air and digesting 1Sch of exchangers with / 1 peryat: inp Tii iHie valves 22-28 flow, heat:)), connected through regulators with sensors 29-33 of temperature, set in the respective areas of the heat treatment area of the greenhouse. Weekend (inverse) j HHHii of roofing and torny systems v) 6oipeBa greenhouse

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They have a common main line connected to BX (JHH (Hi line (bearing valve 27) heating agent entering heat exchanger 6 and bypass line; 1 connected to return water line entering boiler 1) and has an adjustable valve 34, connected via a regulator with a temperature sensor mounted on the line in front of the valve.

yTHJHi3aTop 4 and heater 5 are provided with heating surfaces 36 and 37, connected in series to the circuit of the secondary coolant. The unit is equipped with a smoke exhauster 38.

The setup works as follows.

The water heated in the boiler 1 is supplied with the help of pump 18 to the systems 2 and 3 of the roofing and front heating of the greenhouse, during which it is returned to the boiler. Water flow is regulated by means of valves 22 and 23, depending on the set temperatures in the areas of roofing and frontal heating, measured by sensors 29 and 30.

The main part of the combustion products of nostunet from boiler 1 in parallel to the utilizer 4 and heater 5, the remaining part of the gases is fed to the bypass line) o. The heat of the combustion products} and 1, including the heat of condensation 1)) of these vapors, is not contained in the contact bar on the intermediate heat transfer medium, which, while being heated, is simultaneously saturated with carbon dioxide. The intermediate heat transfer fluid gives 1 lot to the secondary heat transfer fluid, which passes through the pipes of the surface of the bottom 36, is heated to a temperature: a little lower than the temperature of the wet thermometer. In the preheater, the secondary coolant heats up the temperature to a temperature that is significant in the temperature of the wet thermometer.

At some temperature, the secondary tenon carrier is heated in the heat exchanger 6 due to the primary coolant, the flow of which is controlled from nomopp regulating valve 27 to protect the temperature from the temperature in the zone of heating of the greenhouse, as measured by sensor 31. With sufficient note from 1 of the systems roofing and end heating of the greenhouse of the return water, 1 (its temperature is measured by a spindle 35; the latter, with the valve 34 closed, enters the inlet of the heat exchanger 6, which leads to a reduction in the flow rate of the primary coolant. edostatochnom potential return water enters the latter mine heat exchanger 6, in the opposite Li- 1SHYU circulation circuit 17 of the primary heat exchange medium.

From the heat exchanger 6, the secondary heat carrier enters through the control valve 24 in a predetermined quantity into the system 7 of the greenhouse heating, through the control valve 26, into the air heating system 9, depending on the average temperature in the greenhouse measured by the sensor 33, through the control valve 28 depending on the temperature in the zone of the subsoil heating of the greenhouse, measured by the sensor 32, to the heat exchanger 16 and to other consumers.

The rest of the return water from the ground heating system 7, the return water from the sub-ground heating system 8, from the air preheating system 9 and the heat exchanger 16 is fed via a pump 20 to the return circuit of the secondary heating circuit 19. All other consumers may receive all or part of the return water leaving the air preheating system 9.

If necessary, the predetermined flow rate of the secondary coolant in the circulation circuit 19 is maintained by supplying additional amount of cold water to it.

The cold air is mixed with a part of the circulating one coming out of the greenhouse, and with the aid of the fan 12 it is fed into the heating system 9 through the main and bypass lines. Through the decarbonator 10 of the contact type connected to the bypass line circulates through pumps 14 and 15 intermediate the heat carrier saturated with carbon dioxide in the heat exchanger 4. The air, which interacts with the calciner 10 with the intermediate heat carrier, is compressed with carbon dioxide and moisture.

VNIIPI Order 4363/3

Prod. polygons pr-tie, Uzhgorod, st. Project, 4

after the fire (the heating system in the heating system 9, where it mixes with the main part of the heated air and enters the greenhouse. The specified amount of carbon dioxide in the air entering the greenhouse is regulated by changing the flow rate of air entering the calciner 10 using the regulating gate 11 .

Claims (2)

1. An installation for creating a microclimate in a greenhouse, containing, connected to the boiler, roofing, frontal and above-ground heating systems of the greenhouse, a heat utilizer of combustion products with a recirculation loop of the secondary heat carrier, in which the calciner and the subsurface heating system of the greenhouse are included, and a carbon dioxide receiving and feeding system communicating with the calciner, including a fan, characterized in that, "i. that, in order to reduce fuel consumption by increasing the efficiency of using the heat of combustion products and expanding the range of control actions to control the microclimate in the greenhouse, it is equipped with a contact-surface heater having a contour of the intermediate heat transfer fluid, communicated with the heat exchanger, the final heat exchanger connected to the heater and the boiler, the air heating system communicated with the calciner, which has a regulating damper, the system of the soil and the subsoil the first heating of the greenhouse is included in series in the circuit of the secondary coolant, 2. Installation under item 1, characterized in that, in order to reduce the flow rate of the primary coolant and maintain a predetermined mode of operation, it is equipped with a heating exchanger {h with heating secondary heat carrier installed in the subsoil heating system of the greenhouse. Circulation 627 Subscription