CN102577888A - Agricultural greenhouse system based on solar energy and shallow geothermal energy - Google Patents
Agricultural greenhouse system based on solar energy and shallow geothermal energy Download PDFInfo
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- 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
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- 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
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Abstract
The invention belongs to the technical field of utilization of solar energy and shallow geothermal energy and particularly relates to an agricultural greenhouse system based on solar energy and shallow geothermal energy. The agricultural greenhouse system can solve the technical problems of high heat supply cost, poor heat supply effect, low energy efficiency ratio and the like of the existing greenhouse system. The agricultural greenhouse system based on solar energy and shallow geothermal energy comprises a solar heat collector, a geothermal coil system and an underground heat exchanger system, wherein the solar heat collector, the geothermal coil system and the underground heat exchanger system are respectively connected with a heat storage device, a temperature sensor for detecting water temperature in the solar heat collector is arranged on the solar heat collector, and the temperature sensor can detect the water temperature of the solar heat collector and further control the whole greenhouse system to work. The agricultural greenhouse system disclosed by the invention has the advantages of energy conservation, capability of reducing environmental pollution, wide range of application and the like, and can particularly perform adjustment according to regions and seasons to meet different heat supply needs.
Description
Technical field
The invention belongs to solar energy and shallow layer geothermal energy utilizes technical field, relate to the green house system, especially relate to a kind of agricultural greenhouse booth system based on solar energy and shallow layer geothermal energy.
Background technology
Temperature Distribution in the soil is one of environmental key-element of greenhouse crops under ground portion.Soil temperature can influence root system growing with soil in the activity of microorganism because the weather of various places and the bigger difference of soil characteristics existence survive the winter the high and cold area crop, except suitable air themperature will be arranged, but also suitable soil temperature to be arranged.Suitable air themperature can solve through the building greenhouse, and suitable soil temperature then will be through solving underground heat supply.Wherein, the most the mode of energy-saving and environmental protecting be through solar energy to underground heat supply, yet usually solar energy greenhouse is only to air heat, the thermal capacitance of air is less, thereby is difficult for insulation, need increase auxiliary heating plant winter.At present, generally adopt hot-blast stove to heat, though can satisfy the requirement of heating and insulation; But need a large amount of fuel of burning; Fuel cost is bigger, has increased the operating cost of green house, and indoor ground temperature is not enough during severe winter. be difficult to satisfy the requirement of warm season vegetable to temperature.
In order to solve the problem that prior art exists, people have carried out long-term exploration, have proposed various solutions, yet all there is certain weak point in available research achievements.For example, the Chinese patent document discloses a kind of green house heat-supply system based upon geothermal energy [application number: 201120132678.7], is made up of radiator, circulating pump, water tank, heat exchanger and connecting tube; Radiator is made up of the pipe of some series connection; One port and the outlet of circulating pump of radiator link; Inlet of circulating pump communicates with water tank, and the another port of radiator links through the water inlet of connecting tube and heat exchanger, and the delivery port and the water tank of heat exchanger link; Water tank, circulating pump, radiator, connecting tube and heat exchanger constitute the circulatory system of a sealing; Filling pipe and valve are housed on the water tank; Heat exchanger is a coiled pipe or helix tube.Radiator is contained on the booth frame, and water tank is placed in the booth, and heat exchanger is buried underground below 3 meters.
Such scheme has improved prior art to a certain extent, has reduced fuel consumption, has reduced operating cost, and is less to the pollution of environment.Yet such scheme only adopts single heat-supply system based upon geothermal energy, can not utilize cost and pollute all very little solar energy according to region and changes of seasons, and energy savings preferably, practical popularization significance is little.
Summary of the invention
The objective of the invention is to the problems referred to above; Provide a kind of can energy savings; Reduce environmental pollution, particularly can be according to zone and seasonal adjustment to satisfy different market demands, the agricultural greenhouse booth system based on solar energy and shallow layer geothermal energy applied widely.
For achieving the above object; The present invention has adopted following technical proposal: this is based on the agricultural greenhouse booth system of solar energy and shallow layer geothermal energy; Comprise and be located at the outer solar thermal collector of green house, horizontally embedded at the underground floor heating coil system of green house be embedded in the ground heat exchanger system below the floor heating coil system; Described solar thermal collector, floor heating coil system and ground heat exchanger system link to each other with regenerative apparatus respectively; Between solar thermal collector and regenerative apparatus, be connected with the first water-driven mechanism and first switching mechanism; Between floor heating coil system and regenerative apparatus, be connected with the second water-driven mechanism and second switching mechanism; Between ground heat exchanger system and regenerative apparatus, be connected with the 3rd water-driven mechanism and the 3rd switching mechanism; Described solar thermal collector is provided with the temperature sensor that is used to detect water temperature in the solar thermal collector, and described temperature sensor, the first water-driven mechanism, first switching mechanism, the second water-driven mechanism, second switching mechanism, the 3rd water-driven mechanism and the 3rd switching mechanism all link to each other with controller and this controller can be controlled whole green house system works according to the detected solar thermal collector water temperature of temperature sensor.
When detecting leaving water temperature in the solar thermal collector, sensor reaches 30 degree when above; Solar thermal collector is communicated with first switching mechanism between the regenerative apparatus; The floor heating coil system is communicated with second switching mechanism between the regenerative apparatus; The 3rd switching mechanism between ground heat exchanger system and the regenerative apparatus breaks off, and carry out accumulation of heat through regenerative apparatus this moment, and is the heat supply of floor heating coil system by the heat of solar thermal collector collection through regenerative apparatus.When detecting leaving water temperature in the solar thermal collector, sensor is lower than 30 when spending; First switching mechanism between solar thermal collector and the regenerative apparatus breaks off; The 3rd switching mechanism between ground heat exchanger system and the regenerative apparatus, floor heating coil system all are communicated with second switching mechanism between the regenerative apparatus; Through the ground heat exchanger system to the heat supply of floor heating coil system, thereby ensure the required soil temperature of plant growth.Certainly, the leaving water temperature in solar thermal collector is lower than 30 degree but above Ground during warming plate guard system temperature, can also is the heat supply of floor heating coil system simultaneously with the ground heat exchanger system by solar thermal collector.At this moment, solar thermal collector is communicated with first switching mechanism between the regenerative apparatus, and the ground heat exchanger system is communicated with the 3rd switching mechanism between the regenerative apparatus, and the floor heating coil system all is communicated with second switching mechanism between the regenerative apparatus; And first switching mechanism and the 3rd switching mechanism can base area warming plate guard system heat demand adjustment aperture (promptly adjusting solar thermal collector and ground heat exchanger system provide ratio from heat to regenerative apparatus); Thereby farthest utilize solar energy; Reduce the use of underground heat, guarantee Environmental Health.In winter, atmospheric temperature is lower, but there is sunlight in part period area; Should be used, utilize solar heat collector to supply heat, when the heat capacity of solar thermal collector is not enough; Open ground heat exchanger for the floor heating coil pipe provides thermal source, utilize shallow layer geothermal energy heating greenhouse booth.Spring and autumn transition season, can the reasonable distribution thermal source, mainly adopt solar-heating daytime, is aided with the ground heat exchanger system, uses the geothermoenergy heat supply evening, when season in late autumn, sunlight was stronger, the also solar heat-preservation on daytime capable of using.
In above-mentioned agricultural greenhouse booth system based on solar energy and shallow layer geothermal energy; Be connected with the 4th water-driven mechanism and the 4th switching mechanism between described solar thermal collector and the ground heat exchanger system, described the 4th water-driven mechanism all is connected with controller with the 4th switching mechanism.During summer; Because surface temperature is higher; Greenhouse soil possesses the normal temperature of plant growth, and open the 4th water-driven mechanism and the 4th switching mechanism this moment, closes the first water-driven mechanism, first switching mechanism, the second water-driven mechanism, second switching mechanism, the 3rd water-driven mechanism and the 3rd switching mechanism simultaneously; Directly give the underground accumulation of heat through solar thermal collector, for Winter heat supply is got ready.
As preferably, in the above-mentioned agricultural greenhouse booth system based on solar energy and shallow layer geothermal energy, the described first water-driven mechanism, the second water-driven mechanism, the 3rd water-driven mechanism and the 4th water-driven mechanism are water circulating pump.The first water-driven mechanism here, the second water-driven mechanism, the 3rd water-driven mechanism and the 4th water-driven mechanism can take the version of multiple various kinds according to the water-driven needs, can be identical water-driven structure, also can be different water-driven structures.
As preferably, in the above-mentioned agricultural greenhouse booth system based on solar energy and shallow layer geothermal energy, described first switching mechanism, second switching mechanism, the 3rd switching mechanism and the 4th switching mechanism are magnetic valve.Likewise, here first switching mechanism, second switching mechanism, the 3rd switching mechanism and the 4th switching mechanism can be taked the version of multiple various kinds according to actual needs.
In above-mentioned agricultural greenhouse booth system, be provided with the winter protection ditch around the described green house based on solar energy and shallow layer geothermal energy.Being provided with of winter protection ditch can utilize not convection current air in interior filling with insulation material of ditch or the ditch, stops underground heat diffusion in the green house, reduces the accumulation of heat loss.
In the above-mentioned agricultural greenhouse booth system based on solar energy and shallow layer geothermal energy, the area ratio of described solar thermal collector and green house is between 1: 3 to 1: 6.In order to reach better heat supply and energy-saving effect; Solar thermal collector and green house should be selected suitable ratio; If the solar thermal collector area is too small, possibly cause heat capacity not enough, if the solar thermal collector area is excessive; Then can increase the cost of green house system; The area ratio of solar thermal collector and green house can reach effect preferably when being in 1: 3 between 1: 6, and when the area ratio of solar thermal collector and green house was 1: 5, the heat supply Energy Efficiency Ratio of this green house system was the highest.
Compared with prior art; This advantage based on the agricultural greenhouse booth system of solar energy and shallow layer geothermal energy is: can energy savings; Reduce environmental pollution; Particularly can according to the zone with seasonal adjustment to satisfy different market demands, the agricultural greenhouse booth system based on solar energy and shallow layer geothermal energy applied widely.
Description of drawings
Fig. 1 is embodiment 1 structural representation provided by the invention.
Fig. 2 is embodiment 2 structural representations provided by the invention.
Among the figure, solar thermal collector 1, temperature sensor 11, floor heating coil system 2, ground heat exchanger system 3, regenerative apparatus 4, controller 5, first B1 of water-driven mechanism, second B2 of water-driven mechanism, the 3rd B3 of water-driven mechanism, the 4th B4 of water-driven mechanism, the first switching mechanism F1, the second switching mechanism F2, the 3rd switching mechanism F3, the 4th switching mechanism F4.
Embodiment
Embodiment 1:
As shown in Figure 1; This is based on the agricultural greenhouse booth system of solar energy and shallow layer geothermal energy; Comprise and be located at the outer solar thermal collector 1 of green house, horizontally embedded at the underground floor heating coil system 2 of green house be embedded in the ground heat exchanger system 3 below the floor heating coil system 2; Solar thermal collector 1, floor heating coil system 2 and ground heat exchanger system 3 link to each other with regenerative apparatus 4 respectively; Between solar thermal collector 1 and regenerative apparatus 4, be connected with first B1 of water-driven mechanism and the first switching mechanism F1; Between floor heating coil system 2 and regenerative apparatus 4, be connected with second B2 of water-driven mechanism and the second switching mechanism F2, between ground heat exchanger system 3 and regenerative apparatus 4, be connected with the 3rd B3 of water-driven mechanism and the 3rd switching mechanism F3.Solar thermal collector 1 is provided with the temperature sensor 11 that is used to detect water temperature in the solar thermal collector 1, and temperature sensor 11, first B1 of water-driven mechanism, the first switching mechanism F1, second B2 of water-driven mechanism, the second switching mechanism F2, the 3rd B3 of water-driven mechanism and the 3rd switching mechanism F3 all link to each other with controller 5 and this controller 5 can be controlled whole green house system works according to temperature sensor 11 detected solar thermal collector 1 water temperatures.
As preferably, first B1 of water-driven mechanism in the present embodiment, second B2 of water-driven mechanism and the 3rd B3 of water-driven mechanism are water circulating pump, and the first switching mechanism F1, the second switching mechanism F2 and the 3rd switching mechanism F3 are magnetic valve.First B1 of water-driven mechanism here, second B2 of water-driven mechanism and the 3rd B3 of water-driven mechanism can take the version of multiple various kinds according to the water-driven needs, can be identical water-driven structure, also can be different water-driven structures; Likewise, here the first switching mechanism F1, the second switching mechanism F2 and the 3rd switching mechanism F3 also can take the version of multiple various kinds according to actual needs.Around green house, be provided with the winter protection ditch, being provided with of winter protection ditch can utilize not convection current air in interior filling with insulation material of ditch or the ditch, stops underground heat diffusion in the green house, reduces the accumulation of heat loss.Solar thermal collector 1 is 1: 5 with the area ratio of green house in the present embodiment, and the area ratio of solar thermal collector 1 here and green house is to 1: 6 between time can reach best heat supply Energy Efficiency Ratio at 1: 3.
The present invention can energy savings, reduces environmental pollution, particularly can be according to zone, weather, sunlight and seasonal adjustment heat supply state.During Winter heat supply; When detecting leaving water temperature in the solar thermal collector 1, sensor 5 reaches 30 degree when above; Solar thermal collector 1 is communicated with the first switching mechanism F1 between the regenerative apparatus 4; Floor heating coil system 2 is communicated with the second switching mechanism F2 between the regenerative apparatus 4; The 3rd switching mechanism F3 between ground heat exchanger system 3 and the regenerative apparatus 4 breaks off, and carry out accumulation of heat through regenerative apparatus 4 this moment, and is 2 heat supplies of floor heating coil system by the heat that solar thermal collector 1 is gathered through regenerative apparatus 4.When detecting leaving water temperature in the solar thermal collector 1, sensor 5 is lower than 30 when spending; The first switching mechanism F1 between solar thermal collector 1 and the regenerative apparatus 4 breaks off; The 3rd switching mechanism F3 between ground heat exchanger system 3 and the regenerative apparatus 4, floor heating coil system 2 all are communicated with the second switching mechanism F2 between the regenerative apparatus 4; Through ground heat exchanger system 3 to 2 heat supplies of floor heating coil system, thereby ensure the required soil temperature of plant growth.Certainly, the leaving water temperature in solar thermal collector 1 is lower than 30 degree but above Ground during warming plate guard system 2 temperature, can also be 2 heat supplies of floor heating coil system simultaneously with ground heat exchanger system 3 by solar thermal collector 1.At this moment, solar thermal collector 1 is communicated with the first switching mechanism F1 between the regenerative apparatus 4, and ground heat exchanger system 3 is communicated with the 3rd switching mechanism F3 between the regenerative apparatus 4, and floor heating coil system 2 all is communicated with the second switching mechanism F2 between the regenerative apparatus 4; And the first switching mechanism F1 and the 3rd switching mechanism F3 can base area warming plate guard system 2 heat demand adjustment aperture (promptly adjusting solar thermal collector 1 and ground heat exchanger system 3 provide ratio from heat to regenerative apparatus 4); Thereby farthest utilize solar energy; Reduce the use of underground heat, guarantee Environmental Health.
Spring and autumn transition season, mainly adopt solar thermal collector 1 heat supply daytime, be aided with ground heat exchanger system 2, use the geothermoenergy heat supply evening, when season in late autumn, sunlight was stronger, the also solar heat-preservation on daytime capable of using.During summer; Because surface temperature is higher; Greenhouse soil possesses the normal temperature of plant growth, and open first B1 of water-driven mechanism, the first switching mechanism F1, the 3rd B3 of water-driven mechanism and the 3rd switching mechanism F3 this moment, closes second B2 of water-driven mechanism and the second switching mechanism F2; Directly give the underground accumulation of heat through solar thermal collector 1, for Winter heat supply is got ready.
In winter, atmospheric temperature is lower, but there is sunlight in part period area; Should be used, utilize solar heat collector to supply heat, when the heat capacity of solar thermal collector is not enough; Open ground heat exchanger for the floor heating coil pipe provides thermal source, utilize shallow layer geothermal energy heating greenhouse booth.Spring and autumn transition season, can the reasonable distribution thermal source, mainly adopt solar-heating daytime, is aided with the ground heat exchanger system, uses the geothermoenergy heat supply evening, when season in late autumn, sunlight was stronger, the also solar heat-preservation on daytime capable of using.
Embodiment 2:
As shown in Figure 2, be connected with the 4th B4 of water-driven mechanism and the 4th switching mechanism F4 in the present embodiment between solar thermal collector 1 and the ground heat exchanger system 3.The 4th B4 of water-driven mechanism all is connected with controller 5 with the 4th switching mechanism F4.The 4th B4 of water-driven mechanism is a water circulating pump; The 4th switching mechanism F4 is a magnetic valve.All the other structures of present embodiment all with embodiment 1 roughly the same.The main feature of present embodiment is: have two kinds of modes to the direct accumulation of heat of soil.
First kind of mode and embodiment 1 are roughly the same; Promptly open first B1 of water-driven mechanism, the first switching mechanism F1, the 3rd B3 of water-driven mechanism and the 3rd switching mechanism F3; Close second B2 of water-driven mechanism and the second switching mechanism F2, directly give the underground accumulation of heat through solar thermal collector 1.At this moment, the 4th B4 of water-driven mechanism and the 4th switching mechanism F4 are in closed condition.Give the underground accumulation of heat through solar thermal collector 1 through regenerative apparatus 4, for Winter heat supply is got ready.
The second way is for opening the 4th B4 of water-driven mechanism and the 4th switching mechanism F4; Close first B1 of water-driven mechanism, the first switching mechanism F1, second B2 of water-driven mechanism, the second switching mechanism F2, the 3rd B3 of water-driven mechanism and the 3rd switching mechanism F3 simultaneously; Directly give the underground accumulation of heat through solar thermal collector 1, for Winter heat supply is got ready.
Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as solar thermal collector 1, temperature sensor 11, floor heating coil system 2, ground heat exchanger system 3, regenerative apparatus 4, controller 5, first B1 of water-driven mechanism, second B2 of water-driven mechanism, the 3rd B3 of water-driven mechanism, the 4th B4 of water-driven mechanism, the first switching mechanism F1, the second switching mechanism F2, the 3rd switching mechanism F3, the 4th switching mechanism F4 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily, and it all is contrary with spirit of the present invention being construed to any additional restriction to them.
Claims (6)
1. agricultural greenhouse booth system based on solar energy and shallow layer geothermal energy; It is characterized in that; This green house system comprises and is located at the outer solar thermal collector (1) of green house, horizontally embedded in underground floor heating coil system (2) of green house and the ground heat exchanger system (3) that is embedded in below the floor heating coil system (2); Described solar thermal collector (1), floor heating coil system (2) and ground heat exchanger system (3) link to each other with regenerative apparatus (4) respectively; Between solar thermal collector (1) and regenerative apparatus (4), be connected with the first water-driven mechanism (B1) and first switching mechanism (F1); Between floor heating coil system (2) and regenerative apparatus (4), be connected with the second water-driven mechanism (B2) and second switching mechanism (F2); Between ground heat exchanger system (3) and regenerative apparatus (4), be connected with the 3rd water-driven mechanism (B3) and the 3rd switching mechanism (F3); Described solar thermal collector (1) is provided with the temperature sensor (11) that is used to detect the interior water temperature of solar thermal collector (1), and described temperature sensor (11), the first water-driven mechanism (B1), first switching mechanism (F1), the second water-driven mechanism (B2), second switching mechanism (F2), the 3rd water-driven mechanism (B3) and the 3rd switching mechanism (F3) all link to each other with controller (5) and this controller (5) can be controlled whole green house system works according to the detected solar thermal collector of temperature sensor (11) (1) water temperature.
2. the agricultural greenhouse booth system based on solar energy and shallow layer geothermal energy according to claim 1; It is characterized in that; Be connected with the 4th water-driven mechanism (B4) and the 4th switching mechanism (F4) between described solar thermal collector (1) and the ground heat exchanger system (3), described the 4th water-driven mechanism (B4) all is connected with controller (5) with the 4th switching mechanism (F4).
3. the agricultural greenhouse booth system based on solar energy and shallow layer geothermal energy according to claim 2; It is characterized in that the described first water-driven mechanism (B1), the second water-driven mechanism (B2), the 3rd water-driven mechanism (B3) and the 4th water-driven mechanism (B4) are water circulating pump.
4. according to claim 2 or 3 described agricultural greenhouse booth systems based on solar energy and shallow layer geothermal energy; It is characterized in that described first switching mechanism (F1), second switching mechanism (F2), the 3rd switching mechanism (F3) and the 4th switching mechanism (F4) are magnetic valve.
5. according to claim 1 or 2 or 3 described agricultural greenhouse booth systems, it is characterized in that, be provided with the winter protection ditch around the described green house based on solar energy and shallow layer geothermal energy.
6. according to claim 1 or 2 or 3 described agricultural greenhouse booth systems, it is characterized in that the area ratio of described solar thermal collector (1) and green house is between 1: 3 to 1: 6 based on solar energy and shallow layer geothermal energy.
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| CN2012100465372A CN102577888A (en) | 2012-02-28 | 2012-02-28 | Agricultural greenhouse system based on solar energy and shallow geothermal energy |
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| CN2012100465372A CN102577888A (en) | 2012-02-28 | 2012-02-28 | Agricultural greenhouse system based on solar energy and shallow geothermal energy |
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| CN102835278A (en) * | 2012-09-18 | 2012-12-26 | 浙江大学 | Multi-source combined cold and heat supply simulated experiment greenhouse |
| CN103814776A (en) * | 2014-03-04 | 2014-05-28 | 刘长宝 | Greenhouse energy-saving heat insulation system |
| CN104703463A (en) * | 2012-09-06 | 2015-06-10 | 沙德帕卡什·古普塔 | Improvement in and relating to environment controlled structured green houses for cost effective food production |
| CN104996201A (en) * | 2015-08-13 | 2015-10-28 | 苑金良 | Solar heat collection greenhouse with balanced floor heating |
| CN107006295A (en) * | 2017-04-21 | 2017-08-04 | 王现明 | A kind of warmhouse booth |
| CN110173909A (en) * | 2019-05-27 | 2019-08-27 | 福建工程学院 | A kind of greenhouse Hot swapping system and its operation method |
| CN113016449A (en) * | 2021-03-22 | 2021-06-25 | 苏州正乙丙纳米环保科技有限公司 | New energy storage comprehensive utilization system for fruit and vegetable greenhouse |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104703463A (en) * | 2012-09-06 | 2015-06-10 | 沙德帕卡什·古普塔 | Improvement in and relating to environment controlled structured green houses for cost effective food production |
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| CN113016449A (en) * | 2021-03-22 | 2021-06-25 | 苏州正乙丙纳米环保科技有限公司 | New energy storage comprehensive utilization system for fruit and vegetable greenhouse |
| CN113016449B (en) * | 2021-03-22 | 2023-02-28 | 苏州正乙丙纳米环保科技有限公司 | New energy storage comprehensive utilization system for fruit and vegetable greenhouse |
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Application publication date: 20120718 |