CN113668644A - Single-well double-pipe type aquifer energy storage system - Google Patents
Single-well double-pipe type aquifer energy storage system Download PDFInfo
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- CN113668644A CN113668644A CN202111002135.8A CN202111002135A CN113668644A CN 113668644 A CN113668644 A CN 113668644A CN 202111002135 A CN202111002135 A CN 202111002135A CN 113668644 A CN113668644 A CN 113668644A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 239000000463 material Substances 0.000 claims abstract description 57
- 238000000034 method Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 1
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 description 8
- 239000004576 sand Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 5
- 229910003460 diamond Inorganic materials 0.000 description 4
- 239000010432 diamond Substances 0.000 description 4
- 238000005338 heat storage Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 208000017667 Chronic Disease Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 230000002262 irrigation Effects 0.000 description 2
- 239000003621 irrigation water Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
- E03B3/08—Obtaining and confining water by means of wells
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
- E03B3/08—Obtaining and confining water by means of wells
- E03B3/16—Component parts of wells
- E03B3/18—Well filters
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
- E03B3/08—Obtaining and confining water by means of wells
- E03B3/16—Component parts of wells
- E03B3/18—Well filters
- E03B3/24—Well filters formed of loose materials, e.g. gravel
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/32—Methods or installations for obtaining or collecting drinking water or tap water with artificial enrichment, e.g. by adding water from a pond or a river
- E03B3/34—Methods or installations for obtaining or collecting drinking water or tap water with artificial enrichment, e.g. by adding water from a pond or a river of underground water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/20—Geothermal collectors using underground water as working fluid; using working fluid injected directly into the ground, e.g. using injection wells and recovery wells
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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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
- Y02A20/406—Aquifer recharge
-
- 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
- Y02E10/10—Geothermal energy
Abstract
The utility model provides a single well double tube formula aquifer energy storage system, includes heat exchanger, well room, stagnant water section, air conditioner room, cuts apart linker, pressure balance well, strainer, filter material, immersible pump, the strainer includes first strainer, second strainer, third strainer, fourth strainer, the filter material includes first filter material, second filter material, the immersible pump includes first immersible pump, second immersible pump, the well room downside sets up stagnant water section, stagnant water section downside sets up first filter material, first filter material downside sets up stagnant water section, lower floor stagnant water section downside sets up the second filter material, the inside heat exchanger that sets up of well room, the well room right side sets up air conditioner room, air conditioner room passes through unit side tube coupling heat exchanger, the well room downside sets up 2 and gets the well, gets the well upper end and communicates with each other with the well room.
Description
Technical Field
The invention relates to the field of shallow geothermal energy storage and utilization, in particular to a single-well double-pipe type aquifer energy storage system.
Background
Geothermal energy is a renewable energy source, has the advantages of wide distribution, low cost, easy exploitation, cleanness, direct utilization and the like, greatly promotes the utilization of geothermal energy, is an effective measure for resource conservation and environmental protection, and is an important way for realizing the sustainable development of human society. Shallow geothermal energy is the main technical field of geothermal energy utilization.
Aquifer energy storage is an energy-saving technology which can store heat energy under the ground and can be recycled, and is widely applied to heating and cooling of building air-conditioning environment, and underground water is extracted and recharged from the aquifer through an underground energy storage well to realize energy storage and heat energy recovery.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a single-well double-pipe type aquifer energy storage system which improves the efficiency and the energy saving rate.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a single well double tube formula aquifer energy storage system, includes heat exchanger, well room, stagnant water section, air conditioner room, cuts apart linker, pressure balance well, strainer, filter material, immersible pump, the strainer includes first strainer, second strainer, third strainer, fourth strainer, the filter material includes first filter material, second filter material, the immersible pump includes first immersible pump, second immersible pump, the well room downside sets up stagnant water section, stagnant water section downside sets up first filter material, first filter material downside sets up stagnant water section, lower floor stagnant water section downside sets up the second filter material, the inside heat exchanger that sets up of well room, well room right side sets up air conditioner room, air conditioner room passes through unit side tube coupling heat exchanger, well room downside sets up 2 water intaking wells, and the water intaking well upper end communicates with each other with the well room, and the left side water intaking passes upside stagnant water section, In first filter material, downside stagnant water section inserted the second filter material, left side intake well upper end set up at the second filter material upside, and left side intake well passes first filter material section and sets up first strainer, first strainer intraduct sets up first immersible pump, heat exchanger is connected to first immersible pump upper end, and right side intake well passes upside stagnant water section, first filter material, downside stagnant water section and inserts in the second filter material, and right side intake well degree of depth is greater than left side intake well degree of depth in the second filter material, and right side intake well second filter material section sets up the second strainer, the inside second immersible pump that sets up of second strainer, heat exchanger is connected to second immersible pump upper end.
The pressure balance well is arranged on the left side of the well chamber, the dividing communicating device is arranged in the middle of the pressure balance well, the dividing communicating device can be a pneumatic separator or a mechanical separator, a third water filter pipe is arranged on the upper side of the dividing communicating device, and a fourth water filter pipe is arranged on the lower portion of the dividing communicating device.
Has the advantages that:
the energy storage well is preferably drilled and completed by a pumping or gas lift reverse circulation drilling process, mud is not used as much as possible during the drilling of the aquifer, and a diamond sand filter material is carefully selected and strictly graded with the diameter of the aquifer sand. The first submersible pump and the second submersible pump are selected after accurate hydraulic calculation. The geothermal water pipeline selects a proper pressure grade according to actual conditions. The first filter pipe, the second filter pipe, the third filter pipe and the fourth filter pipe are PVC filter pipes (micron-sized filter seams). The pressure balance well is provided with a pneumatic or mechanical separator in the well, and the separator is intermittently opened or closed according to the recharge quantity.
The invention is mainly characterized in that a single-well double-well pipe well-completion process is used, a lower side water stop section divides a water-bearing layer into an upper section and a lower section (a water-bearing layer and a plugging material are arranged in the middle), the upper section is pumped in summer and filled in winter, the lower section is pumped in winter and filled in summer, thus the upper section forms a cold area, and the lower section forms a hot area; or the lower section of the water tank is pumped in summer and irrigated in winter and the upper section of the water tank is pumped in winter according to different geological structures and project characteristics, so that the upper section forms a hot area and the lower section forms a cold area, and the system efficiency and the energy saving rate are improved.
Hot water generated by refrigeration in summer is stored in the lower section hot zone, the water temperature is 5-8 ℃ higher than the natural temperature of underground water, namely, the heat energy of 5-8 ℃ is stored in summer; the cold water produced by heating in winter is stored in the upper-section cold area, and the water temperature of the cold well is about 5-8 ℃ lower than the natural temperature of underground water, namely the cold energy of 5-8 ℃ is stored in winter. The sample single-well double-pipe type aquifer energy storage system forms a cyclic closed energy storage system, and is used in winter and summer, and is used in summer and hot summer, so that the energy saving rate is greatly improved.
By combining the conditions of the cold and hot load of the building, the annual accumulated load and the like, the system can also be coupled with a solar heat collector and the like to increase the temperature of summer irrigation water and increase the heat storage capacity of a heating area so as to adapt to an area with larger heat load in the north; and the temperature of the water poured in the winter can be reduced by coupling a cooling tower and the like, and the cold storage capacity of a cold area is increased so as to adapt to an area with larger cold load in the south. Thus, the heat storage capacity is increased, and the system efficiency is improved.
The invention can reduce the pipeline arrangement and save the construction cost; the combination of the mining and the irrigation at the same place is beneficial to the prevention and the treatment of underground settlement.
The invention makes a series of improvements and suggestions to the drilling and well-completion processes, and adopts the gas lift reverse circulation clean water drilling process, thereby solving the pollution of the energy storage well caused by mud retaining wall and ensuring the water path of the underground aquifer to be smooth; the PVC filter pipe (micron-sized filter joint) is strictly graded in the diameter of the selected diamond sand filter material and aquifer sand, and the problem of chronic diseases caused by sediment blockage of the underground water source heat pump is effectively solved.
The system provided by the invention is characterized in that a pressure balance well is arranged at a position 10-30m (set according to the runoff speed of an underground aquifer) beside the spacing unit, a pneumatic or mechanical separator is arranged in the well, and intermittent opening or closing is selected according to the recharge quantity condition, so that recharge can be ensured and thermal breakthrough can be reduced as much as possible.
Drawings
Fig. 1 is a schematic structural diagram of a single-well double-pipe type aquifer energy storage system according to the invention.
Detailed Description
The invention is explained in more detail below with reference to the figures and examples:
a single-well double-tube type aquifer energy storage system comprises a heat exchanger 1, a well chamber 2, a water stop section 3, an air conditioner room 11, a partition communicating vessel 13, a pressure balance well 15, filter pipes, a filter material and a submersible pump, wherein the filter pipes comprise a first filter pipe 4, a second filter pipe 8, a third filter pipe 12 and a fourth filter pipe 14, the filter material comprises a first filter material 5 and a second filter material 7, the submersible pump comprises a first submersible pump 6 and a second submersible pump 9, the lower side of the well chamber 2 is provided with the water stop section 3, the lower side of the water stop section 3 is provided with the first filter material 5, the lower side of the first filter material 5 is provided with the water stop section 3, the lower side of the lower-layer water stop section 3 is provided with the second filter material 7, the heat exchanger 1 is arranged in the well chamber 2, the air conditioner room 11 is arranged on the right side of the well chamber 2, the air conditioner room 11 is connected with the heat exchanger 1 through a unit side pipeline 10, the lower side of the well chamber 2 is provided with 2 water taking wells, get well upper end and well chamber 2 and communicate with each other, the left side is got the well and is passed the stagnant water section of upside 3, first filter material 5, the stagnant water section of downside 3 and insert in second filter material 7, and the left side is got the well upper end and is set up at 7 upsides of second filter material, and the left side is got the well and is passed 5 sections of first filter material and set up first strainer 4, the inside first immersible pump 6 that sets up of first strainer 4, heat exchanger 1 is connected to first immersible pump 6 upper end, and the right side is got the well and is passed the stagnant water section of upside 3, first filter material 5, the stagnant water section of downside 3 and insert in second filter material 7, and the right side is got the well and is greater than the left side and is got the well degree of depth in second filter material 7, and the right side is got well second filter material 7 sections and set up second strainer 8, the inside second immersible pump 9 that sets up of second strainer 9, heat exchanger 1 is connected to second immersible pump 9 upper end.
The left side of the well chamber 2 is provided with a pressure balance well 15, the middle part of the pressure balance well 15 is provided with a division communicating vessel 13, the division communicating vessel 13 can be a pneumatic separator or a mechanical separator, the upper side of the division communicating vessel 13 is provided with a third water filter pipe 12, and the lower part of the division communicating vessel 13 is provided with a fourth water filter pipe 14.
The energy storage well is preferably drilled and completed by a pumping or gas lift reverse circulation drilling process, mud is not used as much as possible during the drilling of the aquifer, and a diamond sand filter material is carefully selected and strictly graded with the diameter of the aquifer sand. The first submersible pump 6 and the second submersible pump 9 are selected after accurate hydraulic calculation. The geothermal water pipeline selects a proper pressure grade according to actual conditions. The first filter pipe 4, the second filter pipe 8, the third filter pipe 12 and the fourth filter pipe 14 are PVC filter pipes (micron-sized filter seams). The pressure balance well 15 is internally provided with a pneumatic or mechanical separator which is intermittently opened or closed according to the recharging quantity.
The invention is mainly characterized in that a single-well double-well pipe well-completion process is used, a lower side water stop section 3 divides a water-bearing layer into an upper section and a lower section (a water-bearing layer and a plugging material are arranged in the middle), the upper section is pumped in summer and filled in winter, and the lower section is pumped in winter and filled in summer. Thus the upper section forms a cold zone and the lower section forms a hot zone; or the lower section of the water tank is pumped in summer and irrigated in winter and the upper section of the water tank is pumped in winter according to different geological structures and project characteristics, so that the upper section forms a hot area and the lower section forms a cold area, and the system efficiency and the energy saving rate are improved.
Hot water generated by refrigeration in summer is stored in the lower section hot zone, the water temperature is 5-8 ℃ higher than the natural temperature of underground water, namely, the heat energy of 5-8 ℃ is stored in summer; the cold water produced by heating in winter is stored in the upper-section cold area, and the water temperature of the cold well is about 5-8 ℃ lower than the natural temperature of underground water, namely the cold energy of 5-8 ℃ is stored in winter. The sample single-well double-pipe type aquifer energy storage system forms a cyclic closed energy storage system, and is used in winter and summer, and is used in summer and hot summer, so that the energy saving rate is greatly improved.
By combining the conditions of the cold and hot load of the building, the annual accumulated load and the like, the system can also be coupled with a solar heat collector and the like to increase the temperature of summer irrigation water and increase the heat storage capacity of a heating area so as to adapt to an area with larger heat load in the north; and the temperature of the water poured in the winter can be reduced by coupling a cooling tower and the like, and the cold storage capacity of a cold area is increased so as to adapt to an area with larger cold load in the south. Thus, the heat storage capacity is increased, and the system efficiency is improved.
The invention can reduce the pipeline arrangement and save the construction cost; the combination of the mining and the irrigation at the same place is beneficial to the prevention and the treatment of underground settlement.
The invention makes a series of improvements and suggestions to the drilling and well-completion processes, and adopts the gas lift reverse circulation clean water drilling process, thereby solving the pollution of the energy storage well caused by mud retaining wall and ensuring the water path of the underground aquifer to be smooth; the PVC filter pipe (micron-sized filter joint) is strictly graded in the diameter of the selected diamond sand filter material and aquifer sand, and the problem of chronic diseases caused by sediment blockage of the underground water source heat pump is effectively solved.
The system provided by the invention is characterized in that a pressure balance well is arranged at a position 10-30m (set according to the runoff speed of an underground aquifer) beside the spacing unit, a pneumatic or mechanical separator is arranged in the well, and intermittent opening or closing is selected according to the recharge quantity condition, so that recharge can be ensured and thermal breakthrough can be reduced as much as possible.
A single-well double-pipe type aquifer energy storage system operation method comprises the following steps:
firstly, in summer, underground water is extracted from an upper section cold area by a first submersible pump 6, the underground water directly enters a well chamber 2 to exchange heat with a unit side pipeline 10, the temperature is increased, the underground water is filtered and purified, the underground water enters a lower section hot area to be stored, and the selection of cold and hot areas can be flexibly selected according to geological and project conditions;
secondly, extracting underground water from a lower-section hot area by a second submersible pump 9 in winter, directly entering a well chamber 2 to exchange heat with a unit side pipeline 10, raising the temperature, filtering and purifying, entering an upper-section cold area to be stored, and flexibly selecting cold and hot areas according to geological and project conditions;
and thirdly, a division communicating vessel 13 is arranged in the pressure balance well 15, and intermittent opening or closing is selected according to the condition of recharge quantity, so that recharge can be ensured, and heat breakthrough can be reduced as much as possible.
Claims (3)
1. The single-well double-tube type aquifer energy storage system is characterized by comprising a heat exchanger, a well chamber, a water stop section, an air conditioner room, a partition communicating device, a pressure balance well, filter pipes, filter materials and a submersible pump, wherein the filter pipes comprise a first filter pipe, a second filter pipe, a third filter pipe and a fourth filter pipe, the filter materials comprise a first filter material and a second filter material, the submersible pump comprises a first submersible pump and a second submersible pump, the water stop section is arranged on the lower side of the well chamber, the first filter material is arranged on the lower side of the water stop section, the second filter material is arranged on the lower side of the water stop section, the heat exchanger is arranged in the well chamber, the air conditioner room is connected with the heat exchanger through a unit side pipeline, the lower side of the well chamber is provided with 2 water taking wells, the upper ends of the water taking wells are communicated with the well chamber, and the left water taking wells penetrate through the upper water stop section, In first filter material, downside stagnant water section inserted the second filter material, left side intake well upper end set up at the second filter material upside, and left side intake well passes first filter material section and sets up first strainer, first strainer intraduct sets up first immersible pump, heat exchanger is connected to first immersible pump upper end, and right side intake well passes upside stagnant water section, first filter material, downside stagnant water section and inserts in the second filter material, and right side intake well degree of depth is greater than left side intake well degree of depth in the second filter material, and right side intake well second filter material section sets up the second strainer, the inside second immersible pump that sets up of second strainer, heat exchanger is connected to second immersible pump upper end.
2. The single-well double-pipe type aquifer energy storage system of claim 1, wherein a pressure balance well is arranged on the left side of the well chamber, a dividing communicating vessel is arranged in the middle of the pressure balance well, the dividing communicating vessel can be a pneumatic separator or a mechanical separator, a third water filter pipe is arranged on the upper side of the dividing communicating vessel, and a fourth water filter pipe is arranged on the lower portion of the dividing communicating vessel.
3. The method of operating a single well dual tubular aquifer energy storage system according to claim 2, comprising the steps of:
firstly, extracting underground water from an upper section cold area by a first submersible pump in summer, directly entering a well chamber to exchange heat with a unit side pipeline, raising the temperature, filtering and purifying, and entering a lower section hot area to be stored, wherein cold and hot subareas are selected flexibly according to geological and project conditions;
secondly, extracting underground water from a lower-section hot area by a second submersible pump in winter, directly entering a well chamber to exchange heat with a pipeline on the side of the unit, increasing the temperature, filtering and purifying, and entering an upper-section cold area to store, wherein the selection of cold and hot subareas can be flexibly selected according to geological and project conditions;
and thirdly, a partition communicating vessel is arranged in the pressure balance well, and intermittent opening or closing is selected according to the recharge quantity condition, so that recharge can be ensured, and heat breakthrough can be reduced as much as possible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111002135.8A CN113668644A (en) | 2021-08-30 | 2021-08-30 | Single-well double-pipe type aquifer energy storage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111002135.8A CN113668644A (en) | 2021-08-30 | 2021-08-30 | Single-well double-pipe type aquifer energy storage system |
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| CN113668644A true CN113668644A (en) | 2021-11-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562823A (en) * | 2022-02-23 | 2022-05-31 | 四川纳川致远新能源科技有限公司 | Underground aquifer heat storage system based on underground microwave heating |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1538116A (en) * | 2003-10-23 | 2004-10-20 | 上海交通大学 | Composite air-conditioning system of energy storing by enclosed dfferent pressure bearing water-containing layer |
| CN101070704A (en) * | 2007-06-04 | 2007-11-14 | 上海地矿工程勘察有限公司 | Controllable one-well lamina precipitation construction method |
| KR20190053330A (en) * | 2017-11-10 | 2019-05-20 | 대한민국(농촌진흥청장) | Greenhouse cooling and heating system |
| CN110409561A (en) * | 2019-08-21 | 2019-11-05 | 山东省水利科学研究院 | A kind of pneumatic type underground water closing pumping and filling device |
-
2021
- 2021-08-30 CN CN202111002135.8A patent/CN113668644A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1538116A (en) * | 2003-10-23 | 2004-10-20 | 上海交通大学 | Composite air-conditioning system of energy storing by enclosed dfferent pressure bearing water-containing layer |
| CN101070704A (en) * | 2007-06-04 | 2007-11-14 | 上海地矿工程勘察有限公司 | Controllable one-well lamina precipitation construction method |
| KR20190053330A (en) * | 2017-11-10 | 2019-05-20 | 대한민국(농촌진흥청장) | Greenhouse cooling and heating system |
| CN110409561A (en) * | 2019-08-21 | 2019-11-05 | 山东省水利科学研究院 | A kind of pneumatic type underground water closing pumping and filling device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562823A (en) * | 2022-02-23 | 2022-05-31 | 四川纳川致远新能源科技有限公司 | Underground aquifer heat storage system based on underground microwave heating |
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