CN107258401A - A kind of greenhouse collects hold over system and its application method in the air - Google Patents
A kind of greenhouse collects hold over system and its application method in the air Download PDFInfo
- Publication number
- CN107258401A CN107258401A CN201710718694.6A CN201710718694A CN107258401A CN 107258401 A CN107258401 A CN 107258401A CN 201710718694 A CN201710718694 A CN 201710718694A CN 107258401 A CN107258401 A CN 107258401A
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- Prior art keywords
- greenhouse
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- water
- thin wall
- hold over
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Classifications
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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
- A01G9/245—Conduits for heating by means of liquids, e.g. used as frame members or for soil heating
-
- 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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- 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
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Greenhouses (AREA)
Abstract
Collect hold over system and its application method in the air the invention discloses a kind of greenhouse for belonging to greenhouse collection heat storage technology field.The greenhouse collects hold over system and is placed in greenhouse in the air, and control system is placed on outside greenhouse；Be suspended on using the larger unhurried current thin wall tubule unit of pipeline spacing in greenhouse, upper sheaf space, at the skeleton, crop and rear wall are sheltered from heat or light unobvious；The system is using water as heat transmission medium, pass through circulating for water pump forced water, heat energy in solar radiation luminous energy and air in daytime greenhouse is collected and is stored in insulation cistern, it is Greenhouse Heating for night, realize the transfer of greenhouse self-energy over time and space, Solar use efficiency is improved, the problem of solving the influence crop yield of greenhouse cold season Low Night Temperature and quality.Solar use efficiency is improved, the problem of solving the influence crop yield of greenhouse cold season Low Night Temperature and quality.The present invention is simple in construction, easy to operate, and operational effect is good, with energy-conservation, it is practical the characteristics of.
Description
Technical field
The invention belongs to greenhouse collection heat storage technology field, more particularly to a kind of greenhouse collects hold over system and its user in the air
Method.Specifically utilize " unhurried current thin wall tubule " to collect in greenhouse, unnecessary solar energy on upper sheaf space daytime and stored accumulation of heat, use
Collect hold over system and its application method in the air in " solar energy-unhurried current thin wall tubule " of night Greenhouse Heating.
Background technology
The energy consumption heated in greenhouse directly governs the economic benefit of facilities horticulture.Solar energy is renewable as one kind cleaning
The energy turns into study hotspot in recent years, and forefathers have carried out Primary Study to solar energy auxiliary heating system.At present, rear wall hangs
Water curtain, double black films, the unhurried current solar energy collection cooling system such as thin wall tubule and steel-pipe roof structure pipe network are hung, with energy-saving clean environmental protection
The characteristics of, achieve certain application effect in thermal-arrest in cold season greenhouse, radiating.But these systems are generally deposited
It is unstable and the problem of be difficult to the extreme weathers such as reply haze in cost height, low collecting efficiency, uneven water flow distribution, system operation.
Wherein, the collection cooling system installed in rear wall can be only applied in heliogreenhouse, can not be applied to greenhouse, and when receiving illumination
Between it is shorter, night heat scatter and disappear region limited to, it is impossible to effectively act on plant growth space；And steel-pipe roof structure pipe network system
System, can only be installed in newly-built greenhouse, not be suitable for the transformation in old greenhouse.
The content of the invention
Collect hold over system and its application method in the air it is an object of the invention to provide a kind of greenhouse, it is characterised in that
The greenhouse collects hold over system and is responsible for 4 by unhurried current thin wall tubule 1, neck 2, with journey return pipe 3, backwater, returns in the air
Water branch pipe 5, vibration means for main pipe for supplying water 6, water supply branch pipe 7, automatic exhaust steam valve 8, water supply ball valve 9, water meter 10, pressure gauge 11, y-type filter
12nd, ball-cock assembly 13, immersible pump 14, cistern 15, backwater ball valve 16 and control system 17 are constituted；The greenhouse collects hold over system in the air
It is placed in greenhouse, control system 17 is placed on outside greenhouse；
Some single u-shaped unhurried current thin wall tubules 1 are fixed into unhurried current thin wall tubule net side by side by neck 2；Every block of unhurried current is thin
Top, the end of wall tubule net are connected with return branch 5 and water supply branch pipe 7 respectively；Wherein water supply branch pipe 7 is consolidated with vibration means for main pipe for supplying water 6
Fixed connection, the end of vibration means for main pipe for supplying water 6 is connected by water supply ball valve 9, pressure gauge 11, y-type filter 12, water meter 10 with immersible pump 14,
Immersible pump 14 is stretched into below the liquid level of cistern 15；Return branch 5 is connected with backwater supervisor 4, and backwater is responsible for 4 and with journey return pipe 3
It is fixedly connected, automatic exhaust steam valve 8 is installed at the same top of journey return pipe 3, and water polo valve is installed back in the neighbouring position of automatic exhaust steam valve 8
16, water meter 10, y-type filter 12 and pressure gauge 11 are installed successively in the position near the ground close to cistern 15, in cistern 15
Inner side is installed by ball-cock assembly 13；Cistern 15 is in below ground.
Control system 17 is mainly made up of air-temperature sensor, cooling-water temperature sensor and PLC control cabinet.
The greenhouse collects hold over system and constitutes a unit including multiple two panels unhurried current thin wall tubule net interval 2cm in the air,
Unhurried current thin wall tubule unit is connected in parallel on water supply branch pipe 7 and return branch 5, in being hung vertically in greenhouse, upper sheaf space, close
At frame position；It is two neighboring unhurried current thin wall tubule unit between at intervals of 20-30cm.
The external diameter of the thin wall tubule 1 is φ 4-5mm, and internal diameter is φ 2-3mm, and two adjacent thin wall tubules 1 are at a distance of 15-
20mm connects into U-tube.
The application method of aerial collection hold over system in a kind of greenhouse, it comprises the following steps：
A. the unhurried current thin wall tubule is collected into hold over system in the air to install in greenhouse, it is hung vertically in greenhouse
In, upper sheaf space, close to greenhouse frame position at；Cistern is located at below greenhouse ground level, does heat-insulated and anti-to cistern
Processing is oozed, to improve heat-insulating property and prevent infiltration；
B. the fine day of cold season, morning 8 on daytime:30-9:00 opens after insulation quilt, when the water temperature in thin wall tubule is less than
During its tube wall temperature, the heat that automatic control system control greenhouse collects hold over system absorption solar energy in the air starts to collect accumulation of heat, leads to
Crossing circulating for water pump forced water makes the water heated up in thin wall tubule enter cistern, then by the relatively low water of temperature in cistern
It is pumped into thin wall tubule and carries out collection accumulation of heat, appropriate regulation flow rate of water flow can improves the collecting efficiency of system；Afternoon 16:30-17:
00, sunlight intensity dies down, now system automatically control greenhouse collect in the air hold over system stop collection accumulation of heat；
C. night, when control system, which detects greenhouse real air temperature, is less than the lowest temperature pre-set, control system
Automatically control greenhouse and collect hold over system in the air and bring into operation, carry out radiating and mend temperature；It is higher than when control system detects real air temperature
During the heating highest temperature pre-set, control system automatically controls greenhouse and collects hold over system closing in the air；
D. it is annual from March in November to next year (according to residing for greenhouse geographical position, weather conditions and actual state then
Adjustment), daily repeat step bStep c.
Beneficial effects of the present invention compared with prior art, unhurried current thin wall tubule unit of the invention have uniform fluid flow,
Surface heating Quick uniform, heat exchange efficiency be higher, using low grade heat energy the features such as, unhurried current thin wall tubule is suspended on greenhouse
In interior, at upper sheaf space, close skeleton, unhurried current thin wall tubule is not only set to receive more solar irradiation, also as herein
Air themperature is higher, is conducive to collection and accumulation of the thin wall tubule by heat convection progress heat that flow slowly.Present invention collection thermal effect
Rate is high, is not take up crop farming and growing space in greenhouse；Simple in construction, easy to operate, operational effect is good, with energy-conservation,
Practical advantage.
Brief description of the drawings
Fig. 1 is the front view that solar energy-unhurried current thin wall tubule collects hold over system in the air；
Fig. 2 is the detail view of Fig. 1 monolithics unhurried current thin wall tubule unit；
Fig. 3 is that solar energy-unhurried current thin wall tubule collects hold over system distribution schematic diagram in greenhouse in the air.
Embodiment
The present invention provides a kind of greenhouse and collects hold over system and its application method in the air, and the system is larger using pipeline spacing
Unhurried current thin wall tubule unit is suspended in greenhouse, upper sheaf space, at the skeleton, crop and rear wall are sheltered from heat or light unobvious；This is
System is using water as heat transmission medium, by circulating for water pump forced water, by the solar radiation luminous energy and air in daytime greenhouse
In heat energy be collected and be stored in insulation cistern in, for night be Greenhouse Heating, realize greenhouse self-energy in the time
Transfer spatially, improves Solar use efficiency, solves the influence crop yield of greenhouse cold season Low Night Temperature and quality
The problem of.Below in conjunction with the accompanying drawings, the embodiment to the present invention is further described.
Fig. 1 is the front view that solar energy-unhurried current thin wall tubule collects hold over system in the air, and Fig. 2 is that Fig. 1 monolithics unhurried current thin-walled is thin
The detail view of pipe network, Fig. 3 is that solar energy-unhurried current thin wall tubule collects distribution schematic diagram of the hold over system in greenhouse in the air.It is described
System is applied to all greenhouses and greenhouse.
As shown in Figures 1 and 2, some single u-shaped unhurried current thin wall tubules 1 are fixed into unhurried current thin wall tubule net side by side by neck 2；
Top, the end of every piece of unhurried current thin wall tubule net are connected with return branch 5 and water supply branch pipe 7 respectively；Wherein water supply branch pipe 7 is with supplying
Water supervisor 6 is fixedly connected, and the end of vibration means for main pipe for supplying water 6 is by water supply ball valve 9, pressure gauge 11, y-type filter 12, water meter 10 and diving
Pump 14 is connected, and immersible pump 14 is stretched into below the liquid level of cistern 15；Return branch 5 is connected with backwater supervisor 4, and backwater is responsible for 4 and same
Journey return pipe 3 is fixedly connected, and automatic exhaust steam valve 8 is installed at the same top of journey return pipe 3, and in the neighbouring position of automatic exhaust steam valve 8 peace
Water polo valve 16 is reinstalled, water meter 10, y-type filter 12 and pressure gauge 11 are installed successively in the position near the ground close to cistern 15,
Ball-cock assembly 13 is installed in the inner side of cistern 15；Cistern 15 is in below ground.
Control system 17 is mainly made up of air-temperature sensor, cooling-water temperature sensor and PLC control cabinet.
The unhurried current thin wall tubule net, wide 0.8m, high 1.0m；Two panels unhurried current thin wall tubule net interval 2cm, constitutes a list
Member, each unit interval 20cm.
The thin wall tubule external diameter that flows slowly is 4mm, and internal diameter is 3mm, and flow slowly thin wall tubule pipeline spacing 15mm, between wider pipeline
Crop is sheltered from heat or light away from reducing.Water supply ball valve 9 and the control of backwater ball valve 16 supply circling water flow rate, and y-type filter 12 prevents unhurried current
Thin wall tubule is blocked.Cistern 15 is in the below ground of heliogreenhouse, volume 15m3。
As shown in figure 3, unhurried current thin wall tubule collect in the air hold over system be hung vertically in heliogreenhouse, anterior skeleton
On, typically it is advisable apart from rear wall 4m or so.PLC control system 17 is placed on the operation room wall in greenhouse, PLC control system
Air-temperature sensor is placed in the middle part of greenhouse, and cooling-water temperature sensor is placed in cistern.
Generally, intensity of illumination distribution weakens successively from south to north in greenhouse, and the system is suspended on the greenhouse bone close to southern side
On frame, the solar radiation being had more than needed in greenhouse is taken full advantage of, and because pipeline spacing is sparse, crop and rear wall collection accumulation of heat are sheltered from heat or light
Influence very little.The system need to generally coordinate corresponding rear wall collection accumulation of heat measure to carry out simultaneously.Due to April in annual November to next year
Part and special weather under heliogreenhouse nocturnal temperature it is relatively low, it is necessary to heated, therefore, the system master can annual November extremely
April in next year is run.
System collection accumulation of heat run time is automatically controlled by control system.The condition that starts of collection regenerative operation is：Be incubated in the morning
After being lifted, when water temperature is less than its tube wall temperature in unhurried current thin wall tubule, system starts to collect accumulation of heat；Afternoon, water temperature was higher than tube wall temperature
When spending, system stops collection accumulation of heat.Radiating runs the condition started：At night, pre-set most when greenhouse indoor air temperature is less than
During low temperature, system starts radiating；When temperature is higher than the heating highest temperature pre-set, system is closed.
Embodiment 1：Applied to village proving ground in China Agricultural University of Beijing
Use unhurried current thin wall tubule unit size for：Long 2m, wide 1.2m, pipeline spacing 10mm.Flow slowly thin wall tubule external diameter
For 4mm, wall thickness is 0.5mm, and monolithic unhurried current thin wall tubule net total quantity is 118.Installation site is in bone of the level away from rear wall 3m
On frame.
On 28 days-November 2 October in 2016, collect the collection recovery electric heating system of hold over system in the air to solar energy-unhurried current thin wall tubule
It can be tested, specific data such as table 1.
Test greenhouse and be located at Haidian District, Beijing City Shangzhuang town China Agricultural University proving ground (40.1 ° of N, 116.3 ° of E).Temperature
The long 60m of room thing, north and south span 10m, ridge high 3.8m, the rear high 2.5m of wall.Retaining bucket volume is 1m3, reservoir storage is during test
0.8m3, water pump metered flow is 3.0m3/h。
1 solar energy of table-unhurried current thin wall tubule collects the collection heat storage performance (the upper village) of thermal desorption system in the air
Embodiment 2：Applied to Beijing Tongzhou gardening Co., Ltd of Futong
Use unhurried current thin wall tubule net size for：Long 1.2m, wide 1.0m；Pipeline spacing 20mm.Flow slowly thin wall tubule external diameter
For 4.8mm, wall thickness is 0.6mm, and monolithic unhurried current thin wall tubule net total quantity is 80.Installation site is in level away from rear wall 4.5m's
On skeleton.
Test greenhouse be located at Tongzhou District, Beijing City Lucheng town middle peasant Futong gardening Co., Ltd Tongzhou base (39.8 ° of N,
116.7°E).The long 50m of greenhouse thing, north and south span 8m, ridge high 3.8m, the rear high 2.6m of wall.Greenhouse north wall, adverse grade, thing both sides
Gable is assembled using bilayer 160mm polystyrene foam plates, the inside and outside smearing 3mm anticracking grouts of cystosepiment, without other plus
Warm equipment.Soil cultivation tomato in greenhouse.Cistern dischargeable capacity 13.0m3, long 4.2m, wide 2.2m, high 1.4m, positioned at greenhouse
East-west direction center line south corner position.Pond reservoir storage is 10m in experiment3；It is immersible pump rated power 550W, lift 10m, specified
Flow is 10m3/h。
On 28 days-May 2 April in 2017, collect the different water velocities of hold over system in the air to solar energy-unhurried current thin wall tubule
Collection heat storage performance be tested, specific data such as table 2.
2 solar energy of table-unhurried current thin wall tubule collects the collection heat storage performance (Tongzhou) of thermal desorption system in the air
Claims (5)
1. a kind of greenhouse collects hold over system in the air, it is characterised in that the greenhouse collects hold over system by unhurried current thin wall tubule in the air
(1), neck (2), with journey return pipe (3), backwater supervisor (4), return branch (5), vibration means for main pipe for supplying water (6), water supply branch pipe (7), from
Dynamic air bleeding valve (8), water supply ball valve (9), water meter (10), pressure gauge (11), y-type filter (12), ball-cock assembly (13), immersible pump
(14), cistern (15), backwater ball valve (16) and control system (17) composition；The greenhouse collects hold over system and is placed on greenhouse in the air
In, control system (17) is placed on outside greenhouse；
Some single u-shaped unhurried current thin wall tubules (1) are fixed into unhurried current thin wall tubule net side by side by neck (2)；Every block of unhurried current is thin
Top, the end of wall tubule net are connected with return branch (5) and water supply branch pipe (7) respectively；Wherein water supply branch pipe (7) is led with supplying water
Pipe (6) is fixedly connected, and water supply ball valve (9), pressure gauge (11), y-type filter (12), water meter are passed through in vibration means for main pipe for supplying water (6) end
(10) it is connected with immersible pump (14), immersible pump (14) is stretched into below cistern (15) liquid level；Return branch (5) is responsible for backwater
(4) connect, backwater supervisor (4) is fixedly connected with same journey return pipe (3), automatic exhaust steam valve is installed at the top of same journey return pipe (3)
(8), and in automatic exhaust steam valve (8) neighbouring position install back water polo valve (16), the position near the ground close to cistern (15) according to
Secondary installation water meter (10), y-type filter (12) and pressure gauge (11), install ball-cock assembly (13) on the inside of cistern (15)；Retaining
Pond (15) is in below ground.
2. a kind of greenhouse collects hold over system in the air according to claim 1, it is characterised in that (17 is main for the control system
It is made up of air-temperature sensor, cooling-water temperature sensor and PLC control cabinet.
3. a kind of greenhouse collects hold over system in the air according to claim 1, it is characterised in that the greenhouse collects accumulation of heat system in the air
System includes multiple two panels unhurried current thin wall tubule net interval 2cm and constitutes a unit, and unhurried current thin wall tubule unit is connected in parallel on water supply branch
Manage in (7) and return branch (5), in being hung vertically in greenhouse, at upper sheaf space, close frame position；Two neighboring unhurried current
Between thin wall tubule unit at intervals of 20-30cm.
4. a kind of greenhouse collects hold over system in the air according to claim 1, it is characterised in that outside the thin wall tubule (1)
Footpath is φ 4-5mm, and internal diameter is φ 2-3mm, and two adjacent thin wall tubules (1) connect into U-tube at a distance of 15-20mm.
5. the application method of aerial collection hold over system in a kind of greenhouse, it is characterised in that comprise the following steps：
A. the unhurried current thin wall tubule is collected hold over system and installed in greenhouse in the air, it is hung vertically in greenhouse, on
At sheaf space, the frame position in close greenhouse；Cistern is located at below greenhouse ground level, cistern is done at heat-insulated and antiseepage
Reason, to improve heat-insulating property and prevent infiltration；
B. the fine day of cold season, morning 8 on daytime:30-9:00 opens after insulation quilt, when the water temperature in thin wall tubule is managed less than it
During wall temperature, the heat that automatic control system control greenhouse collects hold over system absorption solar energy in the air starts to collect accumulation of heat, passes through water
Circulating for pump forced water makes the water heated up in thin wall tubule enter cistern, then the relatively low water of temperature in cistern is pumped into
Collection accumulation of heat is carried out in thin wall tubule, appropriate regulation flow rate of water flow can improve the collecting efficiency of system；Afternoon 16:30-17:00, too
Sunlight strength dies down, now system automatically control greenhouse collect in the air hold over system stop collection accumulation of heat；
C. at night, when control system, which detects greenhouse real air temperature, is less than the lowest temperature pre-set, control system is automatic
Control greenhouse collects hold over system and brought into operation in the air, carries out radiating and mends temperature；When control system detects real air temperature higher than advance
During the heating highest temperature of setting, control system automatically controls greenhouse and collects hold over system closing in the air；
It is d. annual that from March in November to next year, (geographical position, weather conditions and actual state then are adjusted according to residing for greenhouse
It is whole), repeat daily
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710718694.6A CN107258401A (en) | 2017-08-21 | 2017-08-21 | A kind of greenhouse collects hold over system and its application method in the air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710718694.6A CN107258401A (en) | 2017-08-21 | 2017-08-21 | A kind of greenhouse collects hold over system and its application method in the air |
Publications (1)
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| CN107258401A true CN107258401A (en) | 2017-10-20 |
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| CN201710718694.6A Pending CN107258401A (en) | 2017-08-21 | 2017-08-21 | A kind of greenhouse collects hold over system and its application method in the air |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109997574A (en) * | 2019-05-17 | 2019-07-12 | 西北农林科技大学 | A kind of greenhouse heat-insulating quilt solar thermal collection system |
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| CN202435897U (en) * | 2011-09-13 | 2012-09-19 | 北大工学院绍兴技术研究院 | Energy integrated utilization system in greenhouse |
| CN202587972U (en) * | 2012-06-01 | 2012-12-12 | 西北农林科技大学 | Phase-change heat accumulation circulating device suitable for sunlight greenhouse |
| CN203840863U (en) * | 2014-04-22 | 2014-09-24 | 青岛农业大学 | Water circulation and heat collecting and accumulating type temperature regulating device of solar greenhouse |
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| CN109997574A (en) * | 2019-05-17 | 2019-07-12 | 西北农林科技大学 | A kind of greenhouse heat-insulating quilt solar thermal collection system |
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Application publication date: 20171020 |