CN106613537B - Solar-driven sunlight greenhouse automatic temperature-adjusting drip irrigation system - Google Patents
Solar-driven sunlight greenhouse automatic temperature-adjusting drip irrigation system Download PDFInfo
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- CN106613537B CN106613537B CN201611005175.7A CN201611005175A CN106613537B CN 106613537 B CN106613537 B CN 106613537B CN 201611005175 A CN201611005175 A CN 201611005175A CN 106613537 B CN106613537 B CN 106613537B
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- 238000003973 irrigation Methods 0.000 title claims abstract description 45
- 230000002262 irrigation Effects 0.000 title claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 299
- 239000011229 interlayer Substances 0.000 claims abstract description 59
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 238000005086 pumping Methods 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 103
- 239000007788 liquid Substances 0.000 claims description 30
- 238000001704 evaporation Methods 0.000 claims description 28
- 238000001914 filtration Methods 0.000 claims description 26
- 238000001179 sorption measurement Methods 0.000 claims description 26
- 238000009833 condensation Methods 0.000 claims description 21
- 230000005494 condensation Effects 0.000 claims description 21
- 230000008020 evaporation Effects 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 238000004321 preservation Methods 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 238000013021 overheating Methods 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 claims 1
- 238000005345 coagulation Methods 0.000 claims 1
- 230000008016 vaporization Effects 0.000 claims 1
- 230000033228 biological regulation Effects 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 241000190070 Sarracenia purpurea Species 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 230000028016 temperature homeostasis Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/243—Collecting solar energy
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/14—Greenhouses
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/246—Air-conditioning systems
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/247—Watering arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/60—Solar heat collectors integrated in fixed constructions, e.g. in buildings
- F24S20/61—Passive solar heat collectors, e.g. operated without external energy source
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/12—Technologies relating to agriculture, livestock or agroalimentary industries using renewable energies, e.g. solar water pumping
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
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- Building Environments (AREA)
Abstract
In order to improve the thermal efficiency of the sunlight greenhouse in the temperature regulation and control process and reduce the waste of water used as a regulating medium, the invention provides a solar-driven sunlight greenhouse automatic temperature regulation drip irrigation system, which comprises an automatic temperature regulation subsystem and a drip irrigation subsystem, wherein the automatic temperature regulation subsystem comprises a water filling interlayer, and the drip irrigation subsystem is driven by solar energy and is used for pumping water to the water filling interlayer. According to the solar-driven automatic temperature-adjusting drip irrigation system for the sunlight greenhouse, disclosed by the invention, the heat transfer coefficient of the wall of the sunlight greenhouse is automatically adjusted according to the relative sizes of the environmental temperature, the temperature of the temperature-controlled area and the control temperature, so that the heat transfer between the environment and the temperature-controlled area is automatically enhanced/weakened, the cold and heat energy contained in the environment is utilized in time, and the energy is saved; in addition, the solar energy is utilized to drive the water to flow, so that the heat transfer coefficient of the wall body can be reduced, the energy consumption of the greenhouse can be reduced, the heat transfer coefficient of the wall body of the sunlight greenhouse can be changed along with the indoor and outdoor temperature, the solar energy greenhouse can be widely applied to various occasions needing temperature control, and the solar energy greenhouse has wide market practical prospect.
Description
Technical Field
The invention relates to the technical field of automatic temperature adjustment and solar drip irrigation water raising, in particular to a solar-driven sunlight greenhouse automatic temperature adjustment drip irrigation system.
Background
In most solar greenhouses in northern areas, fossil energy is required for heating because the room temperature in winter is too low. The winter heat load of the sunlight greenhouse is mainly the load generated by the building enclosure. Therefore, in order to reduce the heating energy consumption of the solar greenhouse in winter, the heat preservation and insulation performance of the solar greenhouse is improved by a common method at present. However, the temperature of the sunlight greenhouse is too high at noon on a fine day, and if the sunlight greenhouse cannot timely dissipate heat, the too high temperature can affect the growth of crops, so that the unilateral improvement of the heat preservation and heat insulation performance of the sunlight greenhouse is not an ideal energy-saving mode.
The outer wall of the building is the interface between the inner space and the outer space of the building. The heat exchange between the inner space and the outer space of the building is realized by using the wall as a medium. Therefore, the heat transfer coefficient of the wall has great influence on the energy consumption of the building. The greater the heat transfer coefficient, the more heat is conducted through the wall. The smaller the heat transfer coefficient, the less heat is conducted through the wall. When the outdoor temperature is too high in summer and daytime, in order to reduce the energy consumption of the air conditioner, the heat transferred into the room through the wall should be reduced, and thus the smaller the heat transfer coefficient of the wall is, the better. When the outdoor temperature is too low in summer and night, the heat conducted to the outdoor through the wall should be increased in order to reduce the energy consumption of the air conditioner, and thus the heat transfer coefficient of the wall is as large as possible. However, the thermal conductivity of the exterior wall of the existing building is fixed. If the heat transfer coefficient of the outer wall is designed to be too small in summer, the heat conducted to the indoor space through the wall in the daytime is reduced, and the heat conducted to the outdoor space through the wall by indoor air in the night is also reduced. If the heat transfer coefficient is designed to be too large, the heat transfer from the indoor air to the outdoor through the wall body in the daytime is increased while the heat transfer from the indoor air to the outdoor through the wall body in the nighttime is increased. Therefore, the wall with fixed heat transfer coefficient can not fully utilize the difference of day and night temperature to achieve the purpose of reducing the energy consumption of the air conditioner.
Disclosure of Invention
In order to improve the thermal efficiency in the temperature regulation and control process of the solar greenhouse, the invention utilizes water as a regulating medium and provides a solar-driven automatic temperature-regulating drip irrigation system of the solar greenhouse, which utilizes solar energy to drive the flow of water, reduces the heat transfer coefficient of a wall body, regulates the energy consumption and reduces the waste of water.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the solar-driven sunlight greenhouse automatic temperature-adjusting drip irrigation system comprises an automatic temperature-adjusting subsystem and a drip irrigation subsystem, wherein the automatic temperature-adjusting subsystem (1) comprises a water-filled interlayer (3), and the drip irrigation subsystem (2) is driven by solar energy and is used for pumping water for the water-filled interlayer (3).
Furthermore, the thermal resistance of the automatic temperature regulation subsystem (1) can be automatically regulated along with the change of the environmental temperature, and the automatic temperature regulation subsystem (1) also regulates the water level height of water in the water filling interlayer through a stop valve (8-12), so that the heat transfer quantity between the external environment and the indoor environment is controlled.
Further, the thermostat subsystem includes: fill water intermediate layer, first waterproof layer, first masonry structure, second waterproof layer, second masonry structure, heat preservation and plastering layer, wherein plastering layer and indoor contact, the heat preservation contacts with external environment, fill water intermediate layer left side and stack gradually and set up first waterproof layer, first masonry structure and plastering layer, fill water intermediate layer right side and stack gradually and set up second waterproof layer, second masonry structure and heat preservation, first masonry structure, first waterproof layer, fill water intermediate layer, second waterproof layer, second masonry structure and plastering layer are stacked gradually and set up by external environment to indoor.
Further, the drip irrigation subsystem comprises: the solar water heater comprises a first filtering suction inlet, a solar heat collector, a first circulating water pump, a second circulating water pump, a plurality of third stop valves, a cold water storage tank, a hot water storage tank, a first heat exchanger, a second heat exchanger, a heat insulation layer, a cold water circulating pump, a hot water circulating pump, a pressurizing cavity, a spring, a heating coil, a cooling coil, an evaporating liquid, an evaporating cavity, a piston, a liquid storage cavity, a water well, a plurality of water supply pipelines, a plurality of water return pipelines, a hot water supply pipeline, a hot water return pipeline, a cold water supply pipeline, a cold water return pipeline, a plurality of second filtering suction inlets, a plurality of one-way valves, a plurality of first pipelines, a plurality of second pipelines and; wherein, solar collector with water supply pipe, wet return and return water pipe are connected, first heat exchanger is arranged in the cold water storage water tank, the second heat exchanger is arranged in the hot water storage water tank, cold water supply pipe, cold water wet return one end with cold water storage water tank connection, the other end with cooling coil links to each other, hot water supply pipe, hot water wet return one end with hot water storage water tank connection, the other end with heating coil links to each other, second filters sunction inlet one end and arranges in the liquid storage chamber, the other end with first pipeline links to each other, first pipeline with the second pipeline links to each other, the second pipeline extends in the water interlayer that fills of automatic thermoregulation subsystem.
Furthermore, a first mixed heat exchange stop valve and a second mixed heat exchange stop valve in the plurality of third stop valves are periodically opened to enable the stored water in the hot water storage tank and the stored water in the cold water storage tank to carry out mixed heat exchange, so that the phenomenon of overheating or supercooling of the stored water in the storage tank is prevented.
Further, the automatic temperature adjusting subsystem further comprises a first stop valve and a second stop valve, and the first stop valve and the second stop valve are used for being matched with the first circulating water pump and the second circulating water pump to be opened or closed in different combination modes at day and night so as to adjust the water level of the water in the water filling interlayer; and a third stop valve in the drip irrigation subsystem, the first heat exchanger and the second heat exchanger are opened or closed in a matched mode based on the height relation between the outside environment temperature and the indoor temperature, so that the consistency of the water level of the water filling interlayer (3) and the outside environment temperature change is ensured.
Further, one end of the spring is fixed on the piston, and the other end of the spring is fixed on the inner wall surface of the pressurizing cavity.
Further, the evaporation cavity is filled with evaporation liquid; the heating coil is arranged in the evaporation cavity, and the cooling coil is arranged in the pressurization cavity;
furthermore, one end of the first filtering suction inlet is arranged in the water filling interlayer, the other end of the first filtering suction inlet is connected with the third pipeline, a plurality of first filtering suction inlets are arranged in the height direction of the water filling interlayer, the third pipeline is arranged in the automatic temperature adjusting subsystem and sequentially penetrates through the first waterproof layer, the first masonry structure and the plastering layer, and a plurality of third pipelines are arranged in the height direction of the automatic temperature adjusting subsystem.
Further, the solar collector comprises: the heat absorption device comprises a glass baffle, a heat absorption plate, an adsorption layer, a filter layer, a condensation layer, a cold water coil, a condensation liquid, an adsorption material, a hot water coil, a filter screen and a first baffle; the adsorption material is arranged in the adsorption layer, the hot water coil is arranged in the adsorption material, the filter screen is arranged in the filter layer, the cold water coil is arranged in the condensation layer, a plurality of first baffles are arranged at intervals in the condensation layer, the filter layer is arranged between the adsorption layer and the condensation layer, and the glass baffle, the heat absorption plate, the adsorption layer, the filter layer and the condensation layer are sequentially and tightly stacked.
The technical scheme of the invention can at least achieve the following technical effects:
(1) according to the invention, the heat transfer coefficient of the wall body of the sunlight greenhouse is automatically adjusted according to the relative sizes of the environment temperature, the temperature of the temperature control area and the control temperature, so that the heat transfer between the environment and the temperature control area is automatically strengthened/weakened, the cold and heat energy contained in the environment is utilized in time, and the energy is saved.
(2) The invention utilizes solar energy to drive the flow of water, can reduce the heat transfer coefficient of the wall, reduce the energy consumption of the greenhouse, and can lead the heat transfer coefficient of the wall of the sunlight greenhouse to change along with the indoor and outdoor temperature: when the outdoor temperature is too low, the heat transfer coefficient of the wall body is reduced, and the heat dissipation is reduced; when the indoor temperature is too high, the heat transfer coefficient of the wall body is increased, and the heat dissipation is increased; therefore, the wall body can fully utilize the outdoor temperature difference to adjust the heat entering the room, and greatly saves the energy consumption of the air conditioner. The wall body is novel in design, simple and easy in structure and easy to realize, does not influence the bearing strength of the wall body, belongs to novel low-energy environment-friendly building materials, can be widely popularized and applied to various building engineering, and has wide market practical prospect
(3) The invention uses water as the adjusting medium, thus greatly reducing the cost of adjusting the heat transfer coefficient of the wall.
(4) The invention combines the adjusting process with the drip irrigation of the sunlight greenhouse, thereby creatively reducing the waste of water.
(5) The invention designs the automatic temperature adjusting subsystem and the drip irrigation subsystem which are specially suitable for obtaining the technical effects, the two subsystems have unique structures, the unique structures are scientifically provided with a plurality of valves in combination with heat transfer requirements and control the opening and closing states of the valves, and the influence of temperature, gravity and heat conduction conditions on the water level is creatively utilized, so that the automatic temperature adjusting subsystem and the drip irrigation subsystem can intelligently realize high thermal efficiency in the temperature adjusting and controlling process of the sunlight greenhouse.
(6) The automatic temperature sensing type heat management device is novel in design, simple in structure and easy to realize, belongs to a novel low-energy environment-friendly temperature control system, can be widely applied to various occasions needing temperature control, and has wide market practical prospect.
Drawings
FIG. 1 is a schematic diagram of the structure of the solar-driven solar greenhouse automatic temperature-adjusting drip irrigation system of the present invention.
Figure 2 is a schematic diagram of the pressurized chamber configuration of the present invention.
Fig. 3 is a schematic diagram of the solar collector structure of the present invention.
In the above figures, the meaning of the respective reference numerals is as follows:
1-automatic temperature regulating subsystem; 2-a drip irrigation subsystem; 3-water filling interlayer; 4-a first waterproof layer; 5-a first masonry structure; 4' -a second waterproof layer; 5' -a second masonry structure; 6-insulating layer; 7-plastering layer; 8-a first stop valve I; 9-a first stop valve II; 10-a stop valve; 11-a second stop valve I; 12-a second stop valve II; 13-shielding; 14-shed roof; 15-drip irrigation header pipe; 16-dropper spray head; 17-filtration suction inlet; 18-a solar heat collector; 19-glass baffles; 20-an adsorption layer; 21-a filter layer; 20-a heat absorbing plate; 23-sunlight; 24-a condensation layer; 25-cold water coil; 26-a condensate; 27-an adsorbent material; 28-hot water coil pipe; 29, a filter screen; 30-a baffle plate; 31-first circulation water cup; 32-a second circulating water pump; 33-a third stop valve i; 34-a third stop valve II; 35-third stop valve iii; 36-a third shut-off valve IV; 37-third stop valve v; 38-a third shut-off valve vi; 39-cold water storage tank; 40-hot water storage tank; 41-42 heat exchangers; 43-44 stop valves; 45-heat insulation plate; 46-a first return pipe; 47 — a first water supply conduit; 48-a second water return pipe; 49-second water supply pipe; 50-a stop valve; 51-hot water return pipe; 52-hot water supply pipeline; 53-cold water supply pipeline; 54-cold water return pipe, 55-hot water circulating pump; 56-cold water circulating pump; 57-heating coil; 58-a pressurized cavity; 59-a spring; 60-cooling coil pipe; 61-evaporating the solution; 62-evaporation chamber; 63-a piston; 64-a liquid storage chamber; 65-filtration suction inlet; 66-water; 67-a pipe; 68-a first one-way valve; 69-water; 70-water well; 71-filtration suction inlet; 72-73 pipes; 74 — a second one-way valve; and 75, a pipeline.
Detailed Description
The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings to enable those skilled in the art to more clearly understand the present invention, but not to limit the scope of the present invention.
Referring to fig. 1, the solar-powered solar greenhouse automatic temperature-adjusting drip irrigation system of the present invention comprises: the automatic temperature adjusting subsystem 1 and the drip irrigation subsystem 2; the automatic temperature-adjusting subsystem 1 comprises a water-filling interlayer 3, and the drip irrigation subsystem 2 is driven by solar energy and is used for pumping water to the water-filling interlayer 3.
Preferably, the thermal resistance of the automatic temperature regulation subsystem 1 can be automatically regulated along with the change of the environmental temperature, and the automatic temperature regulation subsystem 1 also regulates the water level height of water in the water filling interlayer through a stop valve, so as to control the heat transfer quantity of the external environment and the indoor environment.
Preferably, the thermostat subsystem 1 comprises: fill water intermediate layer 3, waterproof layer 4, masonry structure 5, heat preservation 6 and plastering layer 7, wherein plastering layer 7 and indoor contact, heat preservation 6 and external environment contact, fill water intermediate layer 3 left side and stack gradually and set up waterproof layer 4, masonry structure 5 and plastering layer 7, fill water intermediate layer 3 right side and stack gradually and set up waterproof layer 4, masonry structure 5 and heat preservation 6, masonry structure 5 ', waterproof layer 4', fill water intermediate layer 3, waterproof layer 4, masonry structure 5 and plastering layer 7 and stack gradually the setting to indoor by external environment.
Preferably, as shown in fig. 2, the drip irrigation subsystem 2 comprises: the solar water heater comprises a filtering suction inlet 17, a solar heat collector 18, a circulating water pump 31, a circulating water pump 32, a plurality of third stop valves I33, a third stop valve II 34, a third stop valve III 35, a third stop valve IV 36, a third stop valve V37, a third stop valve VI 38, a cold water storage tank 39, a hot water storage tank 40, a heat exchanger 41, a heat exchanger 42, a heat insulation layer 45, a cold water circulating pump 56, a hot water circulating pump 55, a pressurizing cavity 58, a spring 59, a heating coil 57, a cooling coil 60, an evaporating liquid 61, an evaporating cavity 62, a piston 63, a liquid storage cavity 64, a water well 70, a plurality of first water pipelines 47, a plurality of first return water pipelines 46, a hot water supply pipeline 52, a hot water return pipeline 51, a cold water supply pipeline 53, a cold water return pipeline 54, a plurality of filtering suction inlets 65, a plurality of first one-way valves 68 and a plurality of.
Preferably, the connection relationship between the above-mentioned layer components in the drip irrigation subsystem 2 is: the solar heat collector 18 is connected with a first water supply pipeline 47, a second water supply pipeline 49, a first water return pipeline 46 and a second water return pipeline 48, the heat exchanger 41 is arranged in the cold water storage tank 39, the heat exchanger 42 is arranged in the hot water storage tank 40, one end of the cold water supply pipeline 53 and one end of the cold water return pipeline 54 are connected with the cold water storage tank 39, the other end of the cold water supply pipeline is connected with the cooling coil pipe 60, one end of the hot water supply pipeline 52 and one end of the hot water return pipeline 51 are connected with the hot water storage tank 40, the other end of the hot water return pipeline are connected with the heating coil pipe 57, one end of the filtering suction inlet 65 is arranged in the liquid storage cavity 64, the other end of the filtering suction inlet is connected with the pipeline 67, the pipeline 67 is connected with the pipeline 73.
Preferably, the first mixing heat exchange stop valve 43 and the second mixing heat exchange stop valve 44 of the stop valves are periodically opened to mix and exchange heat between the stored water in the hot water storage tank 40 and the stored water in the cold water storage tank 39, so as to prevent the stored water in the storage tanks from overheating or overcooling.
Preferably, the spring 59 has one end fixed to the piston 63 and the other end fixed to an inner wall surface of the pressurizing chamber 58.
Preferably, the evaporation cavity 62 is filled with an evaporation liquid 61; the heating coil 57 is disposed in the evaporation chamber 62 and the cooling coil 60 is disposed in the pressurization chamber 58.
Preferably, one end of the filtering suction inlet 17 is arranged in the water filling interlayer 3, the other end of the filtering suction inlet is connected with the pipeline 75, a plurality of filtering suction inlets are arranged along the height direction of the water filling interlayer 3, the pipeline 75 is arranged in the automatic temperature adjusting subsystem 1 and sequentially penetrates through the waterproof layer 4, the masonry structure 5 and the plastering layer 7, and a plurality of filtering suction inlets are arranged along the height direction of the automatic temperature adjusting subsystem 1.
Preferably, as shown in fig. 3, the solar-powered solar greenhouse automatic temperature-adjusting drip irrigation system, the solar heat collector 18 comprises: the heat absorption device comprises a glass baffle 19, a heat absorption plate 22, an adsorption layer 20, a filter layer 21, a condensation layer 24, a cold water coil 25, a condensation liquid 26, an adsorption material 27, a hot water coil 28, a filter screen 29 and a baffle 30;
preferably, the adsorption material 27 is disposed in the adsorption layer 20, the hot water coil 28 is disposed in the adsorption material 27, the filter screen 29 is disposed in the filter layer 21, the cold water coil 25 is disposed in the condensation layer 24, a plurality of baffles 30 are disposed at intervals in the condensation layer 24, the filter layer 21 is disposed between the adsorption layer 20 and the condensation layer 21, and the glass baffle 19, the heat absorption plate 22, the adsorption layer 20, the filter layer 21 and the condensation layer 24 are closely stacked in sequence.
The solar-driven sunlight greenhouse automatic temperature-adjusting drip irrigation system is particularly suitable for being applied to the field of solar automatic water pumping, the thermal resistance of the automatic temperature-adjusting subsystem 1 can be automatically adjusted along with the change of the environmental temperature, and the drip irrigation subsystem 2 realizes the automatic water pumping system utilizing solar energy, so that the energy is saved.
The automatic temperature-regulating system is internally provided with the water-filling interlayer 3, the height of the water level of the water-filling interlayer is regulated through the stop valve, and the heat transfer performance of the water-filling interlayer is further controlled, so that the heat transfer quantity of the external environment and the indoor environment is controlled.
In the following, the working process of the solar-driven automatic temperature-regulating drip irrigation system for the sunlight greenhouse under different temperature situations will be given by way of example, and the specific working principle of the solar-driven automatic temperature-regulating drip irrigation system for the sunlight greenhouse of the present invention will be described:
in daytime, the third stop valve I33, the third stop valve III 35, the third stop valve IV 36, the third stop valve VI 38 and the circulating water pump 31 are closed, the third stop valve II 34, the third stop valve V37 and the circulating water pump 32 are opened, the heat absorbing plate 22 absorbs the sunlight, the temperature is increased, the absorbing material 27 is heated, water molecules in the absorbing material 27 are evaporated to generate water vapor, the water vapor passes through the filtering layer 21 to the condensation layer 24, exchanges heat with the cold water coil 25 in the condensation layer 24, condenses into condensed liquid 26, and gathers at the baffle 30 along the cold water coil 25 under the action of gravity. After absorbing the heat of the water vapor, the water in the cold water coil 25 is heated and then flows to the heat exchanger 42 through the third stop valve II 34 along the first water supply pipeline 47 under the action of the circulating water pump 32 for heat exchange, and then flows back to the condensation layer 24 through the third stop valve V37 along the first water return pipeline 46 for heat exchange.
At night, a third stop valve I33, a third stop valve III 35, a third stop valve IV 36, a third stop valve VI 38, a circulating water pump 31 and a circulating water pump 32 are opened, a third stop valve II 34 and a third stop valve V37 are closed, the condensed liquid 26 absorbs the heat of water in the cold water coil 25 and is evaporated to generate steam, the steam passes through the filter layer 21 to the adsorption layer 20 and is absorbed by the adsorption material 27, the water in the cold water coil 25 is cooled after exchanging heat with the condensed water 26, the condensed liquid 26 flows to the heat exchanger 41 through the third stop valve III 35 under the action of the circulating water pump 31 and flows back to the cold water coil 25 through the third stop valve VI 38 along the second water return pipeline 48 after exchanging heat, the adsorption material 27 absorbs the steam evaporated from the condensed liquid 26 and emits a large amount of heat, the water in the hot water coil 28 absorbs the heat emitted from the adsorption material 27 and is heated, after flowing to the heat exchanger 42 along the first water supply pipeline 47 through the third stop valve I33 to exchange heat under the action of the circulating water pump 32, flowing back to the hot water coil 28 through the third stop valve IV 36 along the first water return pipeline 46, the stored water in the hot water storage tank 40 is cooled after exchanging heat with the evaporated liquid 61 in the evaporation cavity 62 along the hot water supply pipeline 52 to the heating disk 57 under the action of the hot water circulating pump 55, the cooling water flows back to the hot water storage tank 40 along the hot water return pipeline 51 to continue exchanging heat with the heat exchanger 42, the evaporated liquid 61 in the evaporation cavity 62 absorbs the heat of the water in the heating disk 57 and evaporates into the evaporated gas, the evaporated gas moves upwards to the pressurization cavity 58 due to the density difference, the piston 63 is pushed to move forwards and the water 66 in the liquid storage cavity 64 is forced to be sucked into the filtering inlet 65, and the pressurization cavity 58 is increased due to the evaporated gas, the pressure of the water continues to increase, the piston 63 is further pushed to move forward, the water 66 is forced to flow into the water filling interlayer 3 of the automatic temperature adjusting subsystem 1 through the second one-way valve 74 along the pipeline 67, then the water stored in the cold water storage tank 39 flows back to the cold water storage tank 39 along the cold water return pipeline 54 after exchanging heat with the evaporation gas in the pressurizing chamber 58 along the cold water supply pipeline 53 to the cooling coil 60 under the action of the cold water circulating pump 56, the pressure of the pressurizing chamber 58 is reduced due to the cooling of the evaporation gas after the evaporation gas in the pressurizing chamber 58 exchanges heat with the cooling coil 60 and is cooled, the evaporation gas flows back to the evaporating chamber 62 due to the gravity, the piston 63 moves backward under the pulling force of the spring 59, the pressure in the liquid storage chamber 64 is reduced to generate suction force to pump water from the water well 70, and the water flows into the liquid storage chamber 64 along the pipeline 67 through the first one-way valve 68 under the suction force, so as to reciprocate, the water in the liquid storage chamber 64 is pressed into the water filling interlayer 3 of the automatic temperature adjusting subsystem 1.
In summer, when the drip irrigation subsystem 2 operates, and when the external environment temperature is higher than the indoor temperature and heat transfer between the external environment and the indoor environment needs to be weakened, the first stop valve II 9 is opened to adjust the water filling amount in the water filling interlayer 3 so that the water level in the water filling interlayer 3 is at a lower position, at the moment, the air heat conduction in the water filling interlayer 3 is mainly carried out, the water heat conduction is assisted, the air heat conduction coefficient is smaller, the heat conduction performance is relatively weaker, the heat transfer performance of the water filling interlayer 3 is weakened, and further the heat transfer from the external environment to the indoor environment is reduced, when the external environment temperature further rises, the first stop valve I8 is opened so that the water level in the water filling interlayer 3 is at a lowest position, at the moment, the water filling interlayer 3 almost carries out air heat conduction, the air heat conduction coefficient is small, the heat transfer from the external environment to the indoor environment is further reduced, when the drip irrigation subsystem 2 operates, when the external environment temperature is lower than the indoor temperature and the heat transfer between the external environment and the indoor is required to be increased, the second stop valve I11 is opened to adjust the water filling amount in the water filling interlayer 3, so that the water level in the water filling interlayer 3 is at a higher position, at the moment, the water filling interlayer 3 mainly takes the heat conduction of water and takes the air heat conduction as an auxiliary, the heat conduction coefficient of water is higher, the heat conduction performance of the water filling interlayer 3 is relatively stronger, the heat transfer from the external environment to the indoor is further increased, when the external environment temperature is further reduced, the second stop valve II 12 is opened to ensure that the water level in the water filling interlayer 3 is at the highest position, at the moment, the water filling interlayer 3 almost takes the heat conduction of water, the heat conduction coefficient of water is high, the heat transfer from the external environment to the indoor is further increased, and the consistency of the water level of the water filling interlayer 3 and the change of the external environment temperature is ensured, the automatic temperature-adjusting subsystem 1 achieves the effect of automatically adjusting heat transfer.
In winter, when the drip irrigation subsystem 2 operates, when the external environment temperature is higher than the indoor temperature and heat transfer between the external environment and the indoor is required to be increased, the second stop valve I11 is opened to adjust the water filling amount in the water filling interlayer 3 so that the water level in the water filling interlayer 3 is at a higher position, at the moment, the water filling interlayer 3 mainly conducts heat of water and assists air, the heat conductivity coefficient of water is higher and the heat conductivity is relatively stronger, the heat conductivity of the water filling interlayer 3 is enhanced, the heat transfer from the external environment to the indoor is further increased, when the external environment temperature further increases, the second stop valve II 12 is opened so that the water level in the water filling interlayer 3 is at a highest position, at the moment, the water filling interlayer 3 almost conducts heat of water, the heat conductivity of water is high, the heat transfer from the external environment to the indoor is further increased, when the subsystem 2 operates, when the external environment temperature is lower than the indoor temperature and the heat transfer between the external environment and the indoor environment needs to be weakened, the first stop valve II 9 is opened to adjust the water filling amount in the water filling interlayer 3, so that the water level in the water filling interlayer 3 is at a lower position, at the moment, the water filling interlayer 3 mainly takes air heat conduction as the main part and takes water heat conduction as the auxiliary part, the heat conduction coefficient of air is smaller, the heat conduction performance is relatively weaker, the heat transfer performance of the water filling interlayer 3 is weakened, and further the heat transfer from the external environment to the indoor environment is reduced, when the external environment temperature is further reduced, the first stop valve I8 is opened to enable the water level in the water filling interlayer 3 to be at the lowest position, at the moment, the water filling interlayer 3 almost takes air heat conduction, the heat conduction coefficient of air is small, the heat transfer from the external environment to the indoor environment is further reduced, and the consistency of the water level of the water filling interlayer 3 and the temperature change, the automatic temperature-adjusting subsystem 1 achieves the effect of automatically adjusting heat transfer.
The above description is intended to be illustrative and exemplary of the present application and should not be construed to limit the scope of the claims. It is of course possible to combine features of the previously described embodiments and aspects of the invention with each other. In particular, it is possible to use these features not only in the described combinations but also in other combinations or alone without departing from the scope of the invention.
Claims (7)
1. A solar-driven sunlight greenhouse automatic temperature-adjusting drip irrigation system comprises an automatic temperature-adjusting subsystem (1) and a drip irrigation subsystem (2), and is characterized in that the automatic temperature-adjusting subsystem (1) comprises a water-filled interlayer (3), and the drip irrigation subsystem (2) is driven by solar energy and is used for pumping water to the water-filled interlayer (3);
the drip irrigation subsystem (2) comprises: the solar water heater comprises a first filtering suction inlet (17), a solar heat collector (18), a first circulating water pump (31), a second circulating water pump (32), a plurality of third stop valves I (33), third stop valves II (34), third stop valves III (35), third stop valves IV (36), third stop valves V (37), third stop valves VI (38), a cold water storage tank (39), a hot water storage tank (40), a first heat exchanger (41), a second heat exchanger (42), a heat insulation layer (45), a cold water circulating pump (56), a hot water circulating pump (55), a pressurizing cavity (58), a spring (59), a heating coil (57), a cooling coil (60), an evaporating liquid (61), an evaporating cavity (62), a piston (63), a liquid storage cavity (64), a water well (70), a plurality of first water supply pipelines (47), a plurality of first water return pipelines (46), a hot water supply pipeline (52), The solar water heater comprises a hot water return pipeline (51), a cold water supply pipeline (53), a cold water return pipeline (54), a plurality of second filtering suction inlets (65), a plurality of first one-way valves (68), a plurality of first pipelines (67), a plurality of second pipelines (73) and a plurality of third pipelines (75), wherein the solar heat collector (18) is connected with the first water supply pipeline (47), the second water supply pipeline (49), the first return pipeline (46) and the second return pipeline (48), the first heat exchanger (41) is arranged in the cold water storage tank (39), the second heat exchanger (42) is arranged in the hot water storage tank (40), one end of the cold water supply pipeline (53) and one end of the cold water return pipeline (54) are connected with the cold water storage tank (39), the other end of the cold water return pipeline is connected with the cooling coil (60), and the hot water supply pipeline (52) is connected with the cold water storage tank, One end of a hot water return pipeline (51) is connected with the hot water storage tank (40), the other end of the hot water return pipeline is connected with the heating coil (57), one end of a second filtering suction inlet (65) is arranged in the liquid storage cavity (64), the other end of the second filtering suction inlet is connected with the first pipeline (67), the first pipeline (67) is connected with a second pipeline (73), and the second pipeline (73) extends into a water filling interlayer (3) of the automatic temperature regulating subsystem (1);
one end of the spring (59) is fixed on the piston (63), and the other end of the spring is fixed on the inner wall surface of the pressurizing cavity (58);
the evaporation cavity (62) is filled with evaporation liquid (61); the heating coil (57) is placed in the evaporation chamber (62) and the cooling coil (60) is placed in the pressurization chamber (58);
the evaporation liquid (61) in the evaporation cavity (62) absorbs the heat of the water in the heating coil (57) and evaporates into evaporation gas, the evaporation gas moves upwards to the pressurization cavity (58) due to the effect of density difference, the piston (63) is pushed to move forwards, the water (66) in the liquid storage cavity (64) is forced to be pressed into the second filtering suction inlet (65) and flows into the water filling interlayer (3) of the automatic temperature regulating subsystem (1) along the first pipeline (67) through the second one-way valve (74);
the vaporized gas in the pressurizing chamber (58) is cooled by heat exchange with the cooling coil (60) and flows back to the vaporizing chamber (62) due to gravity, the pressurizing chamber (58) is reduced in pressure due to the cooled vaporized gas, the piston (63) moves backwards under the pulling of the spring (59), the pressure in the liquid storage chamber (64) is reduced, water is extracted from the water well (70) by suction force, and the water flows into the liquid storage chamber (64) along the first pipeline (67) through the first check valve (68) under the suction force.
2. The solar-driven sunlight greenhouse automatic temperature-adjusting drip irrigation system according to claim 1, wherein the thermal resistance of the automatic temperature-adjusting subsystem (1) can be automatically adjusted along with the change of the ambient temperature, and the automatic temperature-adjusting subsystem (1) further adjusts the water level height of the water in the water-filled interlayer through a first stop valve I (8), a first stop valve II (9), a stop valve (10), a second stop valve I (11) and a second stop valve II (12), so as to control the heat transfer amount between the external environment and the indoor environment.
3. Solar-driven sunlight greenhouse thermostat drip irrigation system according to claim 2, characterized in that the thermostat subsystem (1) comprises: a water filling interlayer (3), a first waterproof layer (4), a second waterproof layer (4 '), a first masonry structure (5), a second masonry structure (5'), a heat preservation layer (6) and a plastering layer (7), wherein the plastering layer (7) is in contact with the indoor space, the heat-insulating layer (6) is in contact with the external environment, a first waterproof layer (4), a first masonry structure (5) and a plastering layer (7) are sequentially laminated on the left side of the water filling interlayer (3), a second waterproof layer (4 '), a second masonry structure (5') and a heat-insulating layer (6) are sequentially stacked on the right side of the water filling interlayer (3), the heat preservation layer (6), the first masonry structure (5), the first waterproof layer (4), the water filling interlayer (3), the second waterproof layer (4 '), the second masonry structure (5') and the plastering layer (7) are sequentially stacked from the external environment to the indoor.
4. The solar-powered solar greenhouse thermostat drip irrigation system according to claim 3, characterized in that the first and second mixing heat exchange stop valves (43, 44) in the drip irrigation subsystem (2) are periodically opened to allow the stored water in the hot water storage tank (40) and the cold water storage tank (39) in the drip irrigation subsystem (2) to mix and exchange heat to prevent the stored water in the storage tanks from overheating or overcooling.
5. The solar-driven automatic temperature-regulating drip irrigation system for a solar greenhouse according to claim 4, characterized in that the automatic temperature-regulating subsystem (1) further comprises a first cut-off valve I (8), a first cut-off valve II (9), and a second cut-off valve I (11) and a second cut-off valve II (12) for opening or closing in cooperation with the first circulating water pump (31) and the second circulating water pump (32) in different combinations during the day and night to regulate the water level in the water-filled jacket (3), and the third cut-off valves I (33), II (34), III (35), IV (36), V (37), VI (38) and the first heat exchanger (41), second heat exchanger (42) in the drip irrigation subsystem (2) are opened or closed in cooperation with each other based on the high-low relationship between the external ambient temperature and the indoor temperature, so as to ensure the consistency of the water level of the water filling interlayer (3) and the temperature change of the external environment.
6. The solar-driven automatic temperature-regulating drip irrigation system for the solar greenhouse according to claim 1, wherein one end of the first filtering suction inlet (17) is arranged in the water-filled interlayer (3), the other end of the first filtering suction inlet is connected with the third pipeline (75), and a plurality of first filtering suction inlets (17) are arranged along the height direction of the water-filled interlayer (3); third pipeline (75) are arranged in automatic temperature adjustment subsystem (1), and pierce through in proper order first waterproof layer (4), first masonry structure (5) and plastering layer (7), and follow automatic temperature adjustment subsystem (1) direction of height is equipped with a plurality of third pipeline (75).
7. The solar-powered solar greenhouse thermostat drip irrigation system according to claim 1, characterized in that: the solar heat collector (18) comprises a glass baffle (19), a heat absorbing plate (22), an adsorption layer (20), a filter layer (21), a condensation layer (24), a cold water coil (25), a condensation liquid (26), an adsorption material (27), a hot water coil (28), a filter screen (29) and first baffles (30), wherein the adsorption material (27) is arranged in the adsorption layer (20), the hot water coil (28) is arranged in the adsorption material (27), the filter screen (29) is arranged in the filter layer (21), the cold water coil (25) is arranged in the condensation layer (24), the first baffles (30) are arranged in the condensation layer (24) at intervals, the filter layer (21) is arranged between the adsorption layer (20) and the condensation layer (21), and the glass baffle (19), the heat absorbing plate (22), the adsorption layer (20) and the first baffles (30), The filter layer (21) and the coagulation layer (24) are closely stacked in sequence.
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| CN111328668A (en) * | 2020-03-06 | 2020-06-26 | 杭州吉翱世联土地勘测规划设计有限公司 | Sloping field irrigation system that catchments |
| CN114451263B (en) * | 2022-02-18 | 2023-03-21 | 北方工业大学 | Water conservancy water-saving irrigation device for hydraulic engineering protection |
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