CN115067121A - Heat pump coupling soil-air heat exchange system and operation method - Google Patents
Heat pump coupling soil-air heat exchange system and operation method Download PDFInfo
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- CN115067121A CN115067121A CN202210616393.3A CN202210616393A CN115067121A CN 115067121 A CN115067121 A CN 115067121A CN 202210616393 A CN202210616393 A CN 202210616393A CN 115067121 A CN115067121 A CN 115067121A
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000008878 coupling Effects 0.000 title abstract description 4
- 238000010168 coupling process Methods 0.000 title abstract description 4
- 238000005859 coupling reaction Methods 0.000 title abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000002689 soil Substances 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000005086 pumping Methods 0.000 claims abstract description 10
- 239000000284 extract Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 6
- 238000010792 warming Methods 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005399 mechanical ventilation Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 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
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2104—Temperatures of an indoor room or compartment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator
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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
- 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)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
- Greenhouses (AREA)
Abstract
The invention relates to a soil-air heat exchange system for coupling hot air and a heat pump in a greenhouse and an operation method thereof, wherein the soil-air heat exchange system comprises a heat exchange mechanism, a heat pump unit and a control system; the heat exchange mechanism comprises an air inlet pipe, an air outlet pipe and a plurality of heat exchange pipelines paved under the greenhouse, and a fan is installed at the upper end of the air inlet pipe; the heat pump unit comprises a heat pump, a pumping well and a recharging well, a water inlet of the heat pump is communicated with the pumping well through a heat pump water inlet pipe, a water outlet of the heat pump is communicated with the recharging well through a water outlet pipe, and an air outlet of the heat pump is communicated with the heat exchange pipeline through a heat pump air outlet pipe; the control system comprises a control host, an air temperature and soil temperature sensor, a first electromagnetic valve and a second electromagnetic valve, wherein the air temperature and soil temperature sensor, the first electromagnetic valve and the second electromagnetic valve are installed in the greenhouse. The agricultural temperature control system can be used for warming the greenhouse in winter and cooling the greenhouse in summer, can automatically regulate and control the temperature environment in the greenhouse, and is energy-saving, environment-friendly and multifunctional.
Description
Technical Field
The invention relates to the field of facility environment regulation, in particular to a soil-air heat exchange system for coupling hot air and a heat pump of a greenhouse and an operation method thereof.
Background
Sunlight greenhouses and plastic greenhouses are the main types of facilities for the protection and production of horticultural crops at the present stage in China. The solar greenhouse and the greenhouse in winter have limited heat preservation and heat storage capacity, and the phenomenon of low temperature and high humidity often occurs at night, so that the yield and the quality of crops are influenced; the high temperature in the greenhouse is also not beneficial to the growth of crops in summer, so that most of the greenhouses are in an idle state, the resource waste is caused, and the income of farmers is reduced.
In order to meet the requirements of the growth of crops in a sunlight greenhouse and a greenhouse and improve the annual utilization efficiency of the greenhouse, heating or cooling equipment is required to be adopted for environment regulation. Common greenhouse heating methods include fossil energy combustion heating, electric heating and solar heating. Fossil energy combustion heating cost is high, and environmental pollution is easily caused; the electric heating conversion efficiency is low, and the cost is higher; although solar energy is low in cost and ecological and environment-friendly, the solar energy is greatly influenced by weather and is difficult to meet the requirement of all-weather heat supply. The greenhouse summer forced cooling mode mainly comprises mechanical ventilation, sun shading and evaporative cooling. The mechanical ventilation has high energy consumption; the sun-shading and cooling effects are limited; the evaporation and cooling easily cause the overlarge air humidity to induce crop diseases. Therefore, the research on the temperature control system with low cost, high efficiency and ecological environmental protection is of great significance.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a hot air and heat pump coupled soil-air heat exchange system for a greenhouse and an operation method thereof.
The invention is realized by the following technical scheme. A soil-air heat exchange system with coupled hot air and heat pump comprises a heat exchange mechanism, a heat pump unit and a control system 3.
The heat exchange mechanism comprises an air inlet pipe, an air outlet pipe and a plurality of underground heat exchange pipelines paved in the greenhouse, and a fan is installed at the upper end of the air inlet pipe; the heat pump unit comprises a heat pump, a pumping well and a recharging well, a water inlet of the heat pump is communicated with the pumping well through a heat pump water inlet pipe, a water outlet of the heat pump is communicated with the recharging well through a water outlet pipe, and an air outlet of the heat pump is communicated with the heat exchange pipeline through a heat pump air outlet pipe; the control system comprises a control host, an air temperature sensor and a soil temperature sensor which are arranged in the greenhouse, a first electromagnetic valve arranged on an air inlet pipe of the heat exchange mechanism and a second electromagnetic valve arranged on an air outlet pipe of the heat pump.
As optimization, the air inlet pipe is arranged in the middle or the north of the span direction of the greenhouse, the heat exchange pipelines respectively extend towards two ends of the span direction of the greenhouse and are communicated with the air outlet pipes buried at the two ends, and therefore the temperature distribution of soil and air is more uniform.
As optimization, the heat exchange pipelines are embedded in parallel, and the air outlets are formed in the pipelines at intervals, so that heat exchange with soil on the upper portion of the pipelines is facilitated, and the soil heat is distributed uniformly. And a heat insulation layer is laid below the heat exchange pipeline, so that heat conduction to the soil at the lower layer of the pipeline is reduced.
A method of operating a hot air and heat pump coupled soil-to-air heat exchange system comprising the steps of:
in low-temperature seasons, the hot air heat exchange mechanism is preferentially operated on sunny days in daytime to enable the soil to accumulate heat, when the air temperature rises to a preset temperature T1, the control system opens the first electromagnetic valve, closes the second electromagnetic valve, operates the fan of the air inlet pipe, enables hot air at the top of the greenhouse to exchange heat with the soil through the underground heat exchange pipeline, and when the air temperature is reduced to the preset temperature T2, the fan of the air inlet pipe stops operating; when the air temperature in the greenhouse is reduced to a preset temperature T3 in rainy and snowy days, the heat pump unit is operated, the control system opens the second electromagnetic valve, closes the first electromagnetic valve, the heat pump extracts heat energy in underground water to heat air, hot air enters the greenhouse after exchanging heat with soil through an underground heat exchange pipeline, the ground temperature and the air temperature are raised, and when the air temperature is raised to the preset temperature T4, the heat pump stops operating;
at night, when the air temperature in the greenhouse is lower than the preset temperature T5 and the ground temperature is higher than the preset temperature T6, the heat exchange mechanism is preferentially operated to take out the heat accumulated in the soil, so that the air temperature in the greenhouse is increased; when the independent operation of the heat exchange mechanism can not maintain the proper temperature T7 in the greenhouse, the fan of the air inlet pipe stops operating, the heat pump unit is operated, and when the temperature of the air in the greenhouse is higher than the preset temperature T8, the heat pump stops operating.
In high-temperature seasons, when the daytime air temperature rises to a preset temperature T9, the heat pump unit is operated to reduce the air temperature and the ground temperature in the greenhouse, and the heat pump stops operating when the air temperature is reduced to a preset temperature T10. And at night, when the temperature of the air in the greenhouse is higher than the preset temperature T11, operating the heat pump unit, and when the temperature of the air in the greenhouse is lower than the preset temperature T12, stopping the operation of the heat pump.
The invention has the beneficial effects that: the soil-air heat exchange system with coupled hot air and heat pump combines shallow water source heat pump equipment on the basis of the soil heat exchange system, the system not only reduces the load of a single shallow water source heat pump, but also makes up the weather influence of a single soil-air heat exchange system in a heat collection mode, solves the problem of temperature increase of the greenhouse in winter, and solves the problem of temperature reduction of the greenhouse in summer, thereby effectively regulating and controlling the indoor temperature environment of the greenhouse, and the soil-air heat exchange system has the advantages of energy conservation, low cost, ecology, environmental protection and multiple functions.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
shown in the figure:
1. an air inlet pipe; 2. an air outlet pipe; 3. a heat exchange conduit; 4. a fan; 5. a heat pump; 6. pumping a water well; 7. recharging the well; 8. a water inlet pipe; 9. a water outlet pipe; 10. a heat pump air outlet pipe; 11. a control host; 12. an air temperature sensor; 13. a soil temperature sensor; 14. a first solenoid valve; 15. a second solenoid valve.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments. As shown in fig. 1-2, the heat pump coupled soil-air heat exchange system of the present invention includes a heat exchange mechanism, a heat pump unit and a control system.
Heat transfer mechanism includes air-supply line 1, goes out tuber pipe 2 and many lays in the indoor underground heat transfer pipeline 3 of canopy, wherein air-supply line 1 sets up in the middle part or the north of canopy room span direction, the lower extreme and the 3 intercommunications of underground heat transfer pipeline of air-supply line 1, and fan 4 is installed to the upper end of air-supply line 1. The heat exchange pipeline 3 comprises a main heat dissipation pipe in the length direction of the greenhouse and a branch heat dissipation pipe in the span direction of the greenhouse. The air inlet pipe 1 is communicated with the heat dissipation main pipe, and the heat dissipation branch pipes extend towards two ends of the shed room in the span direction and are communicated with the air outlet pipes 2 buried at the two ends.
The air inlet pipe 1 is a 200mm PVC plastic pipe; the fan 4 is directly connected with the air inlet pipe 1 through reducing. The main radiating pipe is made of 160mm PVC plastic pipe, and the branch radiating pipe and the air outlet pipe 7 are made of 110mm PVC plastic pipe. The heat dissipation branch pipes are arranged side by side, the distance between the heat dissipation branch pipes is 0.8-1.2 m, the burial depth of the heat exchange pipeline 3 is 0.5-0.7 m, and a heat insulation layer is laid below the heat exchange pipeline 3.
When the heat exchange pipelines 3 are laid, grooves are dug according to the pipeline spacing. In the embodiment, the distance between the heat exchange pipelines 3 is 1m, the width of the groove is 50cm, the depth of the groove is 80cm, the original soil foundation is compacted, and 3cm of pearl wool is embedded. The pearl cotton is used as a heat insulation layer, the pearl cotton is covered with 20cm of soil, heat exchange pipelines 3 are laid, 6 rows of holes with the diameter of 30mm are evenly distributed along the circumference, and the distance between the holes in the pipeline extending direction is 150 mm. In order to prevent soil from blocking the pipe hole, the radiating branch pipe is wrapped with a layer of non-woven fabric with the thickness of 2 mm.
The heat pump unit comprises a heat pump 5, a pumping well 6 and a recharging well 7, wherein a water inlet of the heat pump 5 is communicated with the pumping well 6 through a heat pump water inlet pipe 8, and a water outlet of the heat pump 5 is communicated with the recharging well 7 through a water outlet pipe 9. The heat pump 5 is a shallow water source heat pump, shallow water is pumped out through a pumping well 6, enters the heat pump 5 for heat exchange, and then returns to the underground from a recharging well 7.
And the air outlet of the heat pump 5 is communicated with the heat exchange pipeline 3 through a heat pump air outlet pipe 10. In the embodiment, the heat pump air outlet pipe 10 is communicated with the lower end of the air inlet pipe 160 cm away from the ground, so that the heat pump air outlet pipe 10 is a 200mm PVC plastic pipe, and the heat pump water inlet pipe 8 and the heat pump water outlet pipe 9 are 32mm PPR hot melt pipes.
The control system comprises a control host 11, an air temperature sensor 12 installed in the greenhouse, a soil temperature sensor 13, a first electromagnetic valve 14 installed on an air inlet pipe of the heat exchange mechanism and a second electromagnetic valve 15 installed on an air outlet pipe of the heat pump. The control host 11 receives signals sent by the air temperature sensor 12 and the soil temperature sensor 13 and controls the first electromagnetic valve 14 and the second electromagnetic valve 15 to open and close.
In the operation method of the embodiment of the invention, in low-temperature seasons, the hot air heat exchange mechanism is preferentially operated in sunny days in daytime to enable the soil to accumulate heat, when the air temperature is increased to the preset temperature T1, the control system opens the first electromagnetic valve 14, closes the second electromagnetic valve 15, and operates the air inlet pipe opening fan 4 to exchange heat between the hot air at the top of the greenhouse and the soil through the heat exchange pipeline 3, and when the air temperature is reduced to the preset temperature T2, the air inlet pipe opening fan 4 stops operating; when the air temperature in the greenhouse is reduced to a preset temperature T3 in rainy and snowy days, the heat pump system is operated, the second electromagnetic valve 15 is opened by the control system, the first electromagnetic valve 14 is closed, the heat pump 5 extracts heat energy in the underground water to heat air, hot air enters the greenhouse after exchanging heat with soil through the underground heat exchange tube 3, the ground temperature and the air temperature are increased, and when the air temperature is increased to the preset temperature T4, the heat pump 5 stops operating; at night, when the air temperature in the greenhouse is lower than the preset temperature T5 and the ground temperature is higher than the preset temperature T6, the hot air heat exchange mechanism is preferentially operated to take out the heat accumulated in the soil, so that the air temperature in the greenhouse is increased; when the independent operation of the heat exchange mechanism can not maintain the proper temperature T7 in the greenhouse, the air inlet pipe fan 4 stops operating, the heat pump system is operated, and when the temperature of the air in the greenhouse is higher than the preset temperature T8, the heat pump 5 stops operating.
In the high-temperature season, when the temperature of the daytime air rises to a preset temperature T9, the heat pump system is operated to reduce the air temperature and the ground temperature in the greenhouse, and when the air temperature is reduced to a preset temperature T10, the heat pump 5 stops operating. And at night, when the temperature of the air in the greenhouse is higher than the preset temperature T11, the heat pump system is operated, and when the temperature of the air in the greenhouse is lower than the preset temperature T12, the heat pump 5 stops operating.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (4)
1. A hot air and heat pump coupled soil-to-air heat exchange system, comprising: comprises a heat exchange mechanism, a heat pump unit and a control system; the heat exchange mechanism comprises an air inlet pipe (1), an air outlet pipe (2) and a plurality of underground heat exchange pipelines (3) laid in the greenhouse, and a fan (4) is mounted at the upper end of the air inlet pipe; the heat pump unit comprises a heat pump (5), a pumping well (6) and a recharging well (7), a water inlet of the heat pump is communicated with the pumping well (6) through a heat pump water inlet pipe (8), a water outlet of the heat pump is communicated with the recharging well (7) through a water outlet pipe (9), and an air outlet of the heat pump is communicated with the heat exchange pipeline (3) through a heat pump air outlet pipe (10); the control system comprises a control host (11), an air temperature sensor (12) and a soil temperature sensor (13) which are installed in the greenhouse, a first electromagnetic valve (14) installed on an air inlet pipe (1) of the heat exchange mechanism and a second electromagnetic valve (15) installed on an air outlet pipe (10) of the heat pump.
2. A hot air and heat pump coupled soil-to-air heat exchange system according to claim 1, wherein: the air inlet pipe (1) is arranged in the middle or the north of the span direction of the greenhouse, and the heat exchange pipelines (3) respectively extend towards two ends of the span direction of the greenhouse and are communicated with the air outlet pipes (2) buried at the two ends.
3. A hot air and heat pump coupled soil-to-air heat exchange system according to claim 1, wherein: the heat exchange pipelines (3) are embedded in parallel, and air outlets are formed in the pipelines at intervals.
4. An operation method of a hot air and heat pump coupled soil-air heat exchange system is characterized in that: in low-temperature seasons, the hot air heat exchange mechanism is preferentially operated on sunny days in daytime to enable the soil to accumulate heat, when the air temperature rises to a preset temperature T1, the control system opens the first electromagnetic valve (14), closes the second electromagnetic valve (15), operates the fan (4) of the air inlet pipe, enables the hot air at the top of the greenhouse to exchange heat with the soil through the underground heat exchange pipeline (3), and when the air temperature drops to a preset temperature T2, the fan (4) of the air inlet pipe stops operating; when the air temperature in the greenhouse is reduced to a preset temperature T3 in rainy and snowy days, the heat pump unit is operated, the control system opens the second electromagnetic valve (15), the first electromagnetic valve (14) is closed, the heat pump (5) extracts heat energy in underground water to heat air, hot air enters the greenhouse after exchanging heat with soil through the underground heat exchange pipeline (3), the ground temperature and the air temperature are raised, and when the air temperature is raised to the preset temperature T4, the heat pump (5) stops operating; at night, when the air temperature in the greenhouse is lower than the preset temperature T5 and the ground temperature is higher than the preset temperature T6, the heat exchange mechanism is preferentially operated to take out the heat accumulated in the soil, so that the air temperature in the greenhouse is increased; when the independent operation of the heat exchange mechanism cannot maintain the proper temperature T7 in the greenhouse, the fan (4) of the air inlet pipe stops operating, the heat pump unit is operated, and when the temperature of the air in the greenhouse is higher than the preset temperature T8, the heat pump (5) stops operating;
in high-temperature seasons, when the daytime air temperature rises to a preset temperature T9, operating the heat pump unit to reduce the air temperature and the ground temperature in the greenhouse, and stopping the operation of the heat pump (5) when the air temperature is reduced to a preset temperature T10; and (3) operating the heat pump unit when the temperature of the air in the greenhouse is higher than the preset temperature T11 at night, and stopping the operation of the heat pump (5) when the temperature of the air in the greenhouse is lower than the preset temperature T12.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210616393.3A CN115067121A (en) | 2022-06-01 | 2022-06-01 | Heat pump coupling soil-air heat exchange system and operation method |
| LU504328A LU504328B1 (en) | 2022-06-01 | 2023-05-26 | Soil-air heat exchange system coupled with hot air and a heat pump and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210616393.3A CN115067121A (en) | 2022-06-01 | 2022-06-01 | Heat pump coupling soil-air heat exchange system and operation method |
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| Publication Number | Publication Date |
|---|---|
| CN115067121A true CN115067121A (en) | 2022-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210616393.3A Pending CN115067121A (en) | 2022-06-01 | 2022-06-01 | Heat pump coupling soil-air heat exchange system and operation method |
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| CN (1) | CN115067121A (en) |
| LU (1) | LU504328B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115735636A (en) * | 2022-11-29 | 2023-03-07 | 浙江省农业科学院 | Plug seedling temperature control system and plug seedling system |
-
2022
- 2022-06-01 CN CN202210616393.3A patent/CN115067121A/en active Pending
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2023
- 2023-05-26 LU LU504328A patent/LU504328B1/en active IP Right Grant
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115735636A (en) * | 2022-11-29 | 2023-03-07 | 浙江省农业科学院 | Plug seedling temperature control system and plug seedling system |
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| Publication number | Publication date |
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| LU504328B1 (en) | 2023-12-01 |
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