CN112997764A - High-temperature mine comprehensive transformation and utilization system combining super-long gravity heat pipe heat extraction and temperature control - Google Patents
High-temperature mine comprehensive transformation and utilization system combining super-long gravity heat pipe heat extraction and temperature control Download PDFInfo
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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
- A01G9/18—Greenhouses for treating plants with carbon dioxide 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
- A01G18/00—Cultivation of mushrooms
- A01G18/60—Cultivation rooms; Equipment therefor
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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
- A01G18/00—Cultivation of mushrooms
- A01G18/60—Cultivation rooms; Equipment therefor
- A01G18/69—Arrangements for managing the environment, e.g. sprinklers
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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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- 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
- A01G9/249—Lighting means
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The invention discloses a high-temperature mine comprehensive transformation and utilization system combining super-long gravity heat pipe heat removal and temperature control, which comprises a mine ventilation system, a super-long gravity heat pipe heat removal and temperature reduction system, plant light source lighting equipment and planting equipment, wherein the super-long gravity heat pipe heat removal and temperature reduction system is connected with the mine ventilation system; the mine ventilation system comprises a high-temperature underground mine, an air inlet roadway, an air exhaust roadway and a carbon dioxide slow release tank; the super-long gravity heat pipe heat-taking and cooling system comprises a super-long gravity heat pipe and ground heat utilization equipment; the planting equipment is arranged in a high-temperature underground mine, and the plant light source lighting equipment provides light energy for plant growth of the planting equipment. The invention fully utilizes the advantages of the ultralong gravity heat pipe and the high-temperature underground mine, transforms the high-temperature underground mine into the underground greenhouse, and utilizes the underground heat of the mine to supply heat to the ground, thereby realizing the high-efficiency and economical comprehensive transformation and utilization of the waste high-temperature underground mine.
Description
Technical Field
The invention belongs to the field of mine geothermal development and utilization, and particularly relates to a comprehensive transformation and utilization system which transforms a waste high-temperature underground mine into an underground planting greenhouse by using an ultralong gravity heat pipe and simultaneously utilizes mine geothermal to supply heat to the ground.
Background
Abandoned mines generally refer to mines that have been shut down for reasons of exhaustion of mineral resources, failure to meet safe mining conditions, or other policy reasons. China has a plurality of abandoned mines which are automatically closed because of depletion or near depletion of mineral resources and no mining value or because of small mineral resource reserves or poor ore quality and high mining cost. The abandoned mine has huge underground space, the environment of the abandoned mine can be relatively isolated from the ground, the abandoned mine is not disturbed by ground climate and natural disasters, and if the abandoned mine can be properly treated, the environmental green harmony and the space development of surrounding cities can be promoted. In this respect, the developed countries of Europe and America such as America and Germany make a great deal of exploration, and the large-scale commercial development is realized. And many attempts are made in China, such as museums in ancient copper mine sites of Da smelt, national mine parks of Fuxin Haizhou open-air mines of Liaoning, green towns of mining areas of Fujian and the like. However, there are still a large number of underground mines which are directly abandoned after the completion of the mining work, including a large number of high temperature mines.
The ambient temperature in the well of the high-temperature mine exceeds the temperature which can be tolerated by the normal heat balance of a human body, so that the labor efficiency is reduced, the health is damaged, and even the heatstroke shock is caused. The main cause is mine geothermal heat. The mine geothermal heat is the heat inside the earth dissipated by surrounding rocks in the mine and is a main heat source for heating air in the mine. The ground temperature gradient of each ore is different in size from 1-2 ℃/100m to 4.1 ℃/100 m. Under the conditions of high underground temperature and high humidity, the labor conditions of workers are deteriorated, and heat damage is caused. Mine geothermal heat, however, is a valuable underground source of heat. With respect to the utilization of geothermal heat in abandoned mines, researchers have proposed development and utilization techniques, but all of them use heat energy only by exploiting it to the earth's surface, and are mainly used in district heating systems for domestic or industrial use, and the space and environmental conditions of underground mines are not fully utilized.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a comprehensive high-temperature mine reconstruction and utilization system combining an ultralong gravity heat pipe for heat extraction and temperature control, which can fully utilize the underground space and heat of a high-temperature underground mine, reconstruct the underground space and heat into an underground planting greenhouse with stable environment, supply heat for ground heat utilization equipment and realize the comprehensive reconstruction and utilization of the high-temperature underground mine.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a high-temperature mine comprehensive transformation and utilization system combining super-long gravity heat pipe heat removal and temperature control comprises a mine ventilation system, a super-long gravity heat pipe heat removal and temperature reduction system, plant light source lighting equipment and planting equipment;
the mine ventilation system comprises a high-temperature underground mine, an air inlet tunnel, an air exhaust tunnel and a carbon dioxide slow release tank, wherein the air inlet tunnel and the air exhaust tunnel are respectively communicated with two sides of the high-temperature underground mine, and the carbon dioxide slow release tank is arranged near the air inlet tunnel to form air circulation of the high-temperature underground mine and construct an air component environment suitable for plant growth;
the super-long gravity heat pipe heat-taking and cooling system comprises a super-long gravity heat pipe and ground heat utilization equipment, wherein most of the super-long gravity heat pipe is inserted into the high-temperature underground mine, and the end part extending out of the ground is connected with the ground heat utilization equipment and used for taking heat in the high-temperature underground mine out of the ground to supply heat for the ground heat utilization equipment, so that the internal temperature of the high-temperature underground mine is reduced, and a ground space with proper temperature is formed;
the planting equipment is arranged in the high-temperature underground mine, and the plant light source lighting equipment is arranged at the top of the high-temperature underground mine to provide light energy for plant growth of the planting equipment.
Furthermore, the ultra-long gravity heat pipe comprises a single-pipe and multi-head heat pipe, the outer wall of the pipe body is a smooth wall surface, or a water circulation loop pipe containing enhanced heat exchange, or a pipe wall provided with an enhanced heat exchange element, and the inside of the pipe body is a light pipe, or a sleeve pipe containing an internal structure, or a sleeve pipe containing a wicking layer.
Furthermore, the ultra-long gravity heat pipe heat-taking and cooling system also comprises a steam regulating valve, a working medium liquid storage tank and a liquid backflow regulating valve; and a steam outlet of the ultralong gravity heat pipe returns to a liquid inlet of the ultralong gravity heat pipe through a steam regulating valve, ground heat utilization equipment, a working medium liquid storage tank and a liquid backflow regulating valve in sequence.
Further, the tube internal circulation working medium of the ultra-long gravity heat tube comprises water, liquid ammonia, carbon dioxide, ethanol, acetone, an organic working medium or an inorganic working medium.
Further, the ground heat utilization device comprises a direct heat supply device, a heat pump device or a step heat utilization device.
Further, the light source of the plant light source lighting device comprises lamplight or sunlight.
The invention has the beneficial effects that:
(1) the super-long gravity heat pipe heat-taking and cooling system stores heat energy in the working medium latent heat through working medium phase change, the super-long gravity heat pipe has higher temperature-equalizing property, and the underground temperature of a high-temperature underground mine can be reduced by means of the isothermal property of the super-long gravity heat pipe, so that the high-temperature underground mine is ensured to be stable at the proper plant growth temperature for a long time. The hot air or hot rock wall in the high-temperature underground mine transfers heat to the ultralong gravity heat pipe, so that the temperature in the mine is reduced, meanwhile, the circulating working medium in the pipe acquires the heat in the heat pipe, vaporizes, rises to the top of the heat pipe, is conveyed to ground heat utilization equipment through a steam flow regulating valve, releases heat, liquefies, then flows back to the ultralong gravity heat pipe, acquires the heat again and vaporizes again. The steam regulating valve is used for regulating the steam pressure of the ultralong gravity heat pipe so as to change the rising rate of the steam, and the liquid backflow regulating valve is used for controlling a water head at the bottom of the heat pipe so as to control the circulation flow of the working medium in the ultralong gravity heat pipe.
(2) The underground space of high temperature underground mine is behind the temperature regulation effect through overlength gravity heat pipe, the mine ventilation system through combining carbon dioxide slow release equipment provides the air component environment that is fit for vegetation, provide light energy through plant light source lighting apparatus, irrigate through groundwater or surface water, can become "underground greenhouse" that is fit for vegetation, can carry out cash crop planting such as vegetables, especially, cash crop cultivation that needs higher temperature humidity and low light level such as suitable fungus class is cultivated (the fungus class is planted and should be cancelled carbon dioxide slow release equipment as required or change the air component of other plant demands). Because the space isolation nature of underground mine can fully avoid the plant diseases and insect pests, need not to use the pesticide, provide ecological organic edible material for the urban resident, because the environmental stability of underground mine moreover can guarantee to plant and supply throughout the year.
(3) The mine ventilation system can form air convection in a high-temperature underground mine to form artificial heat storage, and the heat taking process of the heat absorption section of the ultra-long gravity heat pipe can be enhanced by the convection effect of the mine ventilation system, so that the heat collecting and cooling efficiency of the ultra-long gravity heat pipe heat taking and cooling system is greatly improved.
(4) The circulating working medium in the ultralong gravity heat pipe has no scaling and corrosion effects, and is beneficial to the long-term stable operation of ground heat utilization equipment.
(5) The carbon dioxide slow release tank can form a local high-concentration carbon dioxide environment, promote plant growth, and increase carbon dioxide absorption and biological solidification.
Drawings
Fig. 1 is a schematic structural view of the high-temperature mine comprehensive reconstruction utilization system of this embodiment.
Description of reference numerals: 1-high temperature underground mine; 2-air inlet lane; 3-exhaust lane and 4-carbon dioxide slow release tank; 5-super long gravity heat pipe; 6-circulating working medium in the tube; 7-steam flow regulating valve; 8-ground heat utilization equipment; 9-working medium liquid storage tank; 10-liquid reflux regulating valve; 11-plant light source lighting equipment; 12-planting equipment.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in figure 1, the comprehensive high-temperature mine reconstruction and utilization system combining the heat extraction and temperature control of the ultralong gravity heat pipe is used for reconstructing a high-temperature underground mine into an underground planting greenhouse and performing ground heat supply by utilizing mine geothermal heat, and mainly comprises a mine ventilation system, an ultralong gravity heat pipe heat extraction and temperature reduction system, a plant light source lighting device 11 and a planting device 12.
Wherein, the mine ventilation system comprises a high-temperature underground mine 1, an air inlet lane 2, an air exhaust lane 3 and a carbon dioxide slow release tank 4. The air inlet lane 2 and the air exhaust lane 3 are respectively communicated with the ground and the high-temperature mine, and the carbon dioxide slow release tank 4 is arranged in the high-temperature underground mine 1 and is close to the air inlet lane 2. Fresh air on the ground enters the high-temperature underground mine 1 from the air inlet tunnel 2, carbon dioxide separated out from the mixed carbon dioxide slow-release tank 4 flows through the planting equipment 12 in the mine, and is finally discharged from the air exhaust tunnel 3, so that an air component environment suitable for plant growth is provided. It is easy to understand that, in order to ensure stable air convection, the air inlet lane 2 and the air outlet lane 3 can be provided with corresponding power devices according to requirements.
The ultra-long gravity heat pipe heat-taking and cooling system comprises an ultra-long gravity heat pipe 5, a pipe internal circulation working medium 6, a steam flow regulating valve 7, ground heat utilization equipment 8, a working medium liquid storage tank 9 and a liquid backflow regulating valve 10. In the embodiment, the ground heat utilization equipment 8 is a heat pump heating system and comprises a compressor 8-1, a condenser 8-2, a heat utilization building 8-3 and a throttle valve 8-4. The steam outlet of the ultra-long gravity heat pipe 5 is sequentially connected with a steam regulating valve 7, a compressor 8-1, a condenser 8-2, a throttle valve 8-4, a working medium liquid storage tank 9 and a liquid backflow regulating valve 10 in the ground heat utilization equipment 8, and is connected with the liquid inlet of the ultra-long gravity heat pipe 5 again to form a heat taking loop. The heat utilization building 8-3 is connected with the condenser 8-2 to form a heat utilization loop.
When hot air in the high-temperature underground mine 1 flows through the ultralong gravity heat pipe 5, heat is transferred to the ultralong gravity heat pipe 5, so that a circulating working medium 6 in the pipe is vaporized after heat is obtained and is conveyed to a compressor 8-1 from a steam outlet at the top of the ultralong gravity heat pipe 5 through a steam regulating valve 7, the pressurized high-temperature steam enters a condenser 8-2, cooling water is heated and condensed to release heat, the condensed heat-released liquid enters a working medium liquid storage tank 9 after passing through a throttling valve 8-4 and flows back to the ultralong gravity heat pipe 5 through a liquid flow regulating valve 10 to exchange heat and is vaporized again, and meanwhile, the heated cooling water in the condenser 8-2 is conveyed to a heat-using building 8-3 to supply heat. Therefore, the internal temperature of the high-temperature underground mine 1 is reduced, a proper environment temperature is provided for plant growth, and meanwhile, heat in the mine is extracted to the ground to supply heat for the ground heat utilization equipment 8.
The steam regulating valve 7 is used for regulating the steam pressure of the ultralong gravity heat pipe 5 so as to change the rising rate of the steam. The liquid reflux adjusting valve 10 is used for controlling a water head at the bottom of the heat pipe so as to control the circulating flow of the circulating working medium 6 in the pipe.
The majority of the super-long gravity heat pipe 5 is inserted into the high-temperature underground mine 1 and is positioned between the air inlet lane 2 and the air exhaust lane 3. Therefore, the convection effect of the high-temperature underground mine 1 can prolong the heat taking process of the gravity heat pipe 5, so that the heat collecting and cooling efficiency of a heat pipe heat collecting system can be greatly improved.
The ultra-long gravity heat pipe 5 includes but is not limited to single-pipe and multi-head heat pipes, the outer wall of the heat pipe can be a smooth wall surface, or a water circulation sleeve pipe containing enhanced heat exchange, or a pipe wall provided with an enhanced heat exchange element, and the inside of the heat pipe can be a light pipe, or a sleeve pipe containing an internal structure, or a sleeve pipe containing a wicking layer. The circulating working medium 6 in the pipe includes but is not limited to water, liquid ammonia, carbon dioxide, ethanol, acetone, organic working medium or inorganic working medium.
According to the invention, the ultra-long gravity heat pipe 5 is inserted into the high-temperature underground mine 1, the air inlet lane 2 and the air exhaust lane 3 are combined with the carbon dioxide slow release tank 4 to form in-well convection, the heat absorption efficiency of the heat pipe is improved, and the temperature in the well is reduced, so that the high-temperature underground mine 1 is transformed into an underground greenhouse, and the high-temperature underground greenhouse can be used for planting economic crops such as vegetables and the like by combining with necessary plant light source lighting equipment 11, planting equipment 12 and irrigation equipment, and is particularly suitable for culturing economic crops such as fungi and the like which need high temperature, humidity and low illuminance (the carbon dioxide slow release equipment is cancelled or replaced by air components required by other plants according to needs.
Meanwhile, the high-temperature underground mine 1 continuously provides heat for the evaporation section of the ultralong gravity heat pipe 5, high-temperature steam is conveyed to the ground heat utilization equipment 8, and the stable control of mine geothermal heat exploitation is realized by combining the steam regulating valve 7, the liquid backflow regulating valve 10 and other components to supply heat for the ground, so that stable and reliable thermodynamic cycle is realized, and the specific energy management and control method comprises the following steps:
1) and calculating the reasonable operation temperature and the steam flow of the ultralong gravity heat pipe 5 according to the plant growth required temperature of the planting equipment 12 and the heat supply design heat of the heat utilization building 8-3.
2) The opening degree of the steam regulating valve 7 is regulated, the working temperature of the ultralong gravity heat pipe 5 is regulated by controlling the steam flow, along with the extraction of steam, the temperature of the heating section of the ultralong gravity heat pipe 5 in the high-temperature underground mine 1 is reduced, the temperature of the high-temperature underground mine 1 is also gradually reduced, and finally the temperature in the well can be gradually stabilized within the required temperature range by controlling the temperature of the steam flow regulating heat pipe.
3) After the operation temperature of the ultra-long gravity heat pipe 5 is adjusted to be stable, the power of the compressor 8-1 and the cooling water flow of the condenser 8-2 are adjusted according to the heat supply requirement of the heat-using building 8-3, so that the heating temperature of the cooling water is stabilized within the required temperature range.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.
Claims (6)
1. The utility model provides a high temperature mine that combines super long gravity heat pipe to get heat accuse temperature is synthesized and is reformed transform and utilize system which characterized in that: the system comprises a mine ventilation system, an ultralong gravity heat pipe heat-taking and cooling system, plant light source lighting equipment and planting equipment;
the mine ventilation system comprises a high-temperature underground mine, an air inlet tunnel, an air exhaust tunnel and a carbon dioxide slow release tank, wherein the air inlet tunnel and the air exhaust tunnel are respectively communicated with two sides of the high-temperature underground mine, and the carbon dioxide slow release tank is arranged near the air inlet tunnel to form air circulation of the high-temperature underground mine and construct an air component environment suitable for plant growth;
the super-long gravity heat pipe heat-taking and cooling system comprises a super-long gravity heat pipe and ground heat utilization equipment, wherein most of the super-long gravity heat pipe is inserted into the high-temperature underground mine, and the end part extending out of the ground is connected with the ground heat utilization equipment and used for taking heat in the high-temperature underground mine out of the ground to supply heat for the ground heat utilization equipment, so that the internal temperature of the high-temperature underground mine is reduced, and a ground space with proper temperature is formed;
the planting equipment is arranged in the high-temperature underground mine, and the plant light source lighting equipment is arranged at the top of the high-temperature underground mine to provide light energy for plant growth of the planting equipment.
2. The high-temperature mine comprehensive reconstruction utilization system as claimed in claim 1, wherein: the ultra-long gravity heat pipe comprises a single-pipe and a multi-head heat pipe, the outer wall of the pipe body is a smooth wall surface, or a water circulation sleeve pipe containing enhanced heat exchange, or a pipe wall provided with an enhanced heat exchange element, and a light pipe, or a sleeve pipe containing an internal structure, or a sleeve pipe containing a wicking layer is arranged inside the pipe body.
3. The high-temperature mine comprehensive reconstruction utilization system as claimed in claim 1, wherein: the ultra-long gravity heat pipe heat-taking and cooling system further comprises a steam regulating valve, a working medium liquid storage tank and a liquid backflow regulating valve; and a steam outlet of the ultralong gravity heat pipe returns to a liquid inlet of the ultralong gravity heat pipe through a steam regulating valve, ground heat utilization equipment, a working medium liquid storage tank and a liquid backflow regulating valve in sequence.
4. The high-temperature mine comprehensive reconstruction utilization system as claimed in claim 1, wherein: the in-tube circulating working medium of the ultra-long gravity heat pipe comprises water, liquid ammonia, carbon dioxide, ethanol, acetone, an organic working medium or an inorganic working medium.
5. The high-temperature mine comprehensive reconstruction utilization system as claimed in claim 1, wherein: the ground heat utilization equipment comprises direct heat supply equipment, heat pump equipment or cascade heat utilization equipment.
6. The high-temperature mine comprehensive reconstruction utilization system as claimed in claim 4, wherein: the light source of the plant light source lighting equipment comprises lamplight or sunlight.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN105660249A (en) * | 2016-03-10 | 2016-06-15 | 中冶北方（大连）工程技术有限公司 | Device and method for controlling mine geotherm and utilizing waste heat to warm planting greenhouse |
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| US20190323253A1 (en) * | 2018-04-18 | 2019-10-24 | White Pods Pharm Canada Inc. | Secure plant cultivation chamber and facility |
| CN109156226A (en) * | 2018-11-05 | 2019-01-08 | 袁军 | A kind of novel agricultural implantation methods and system based on the underground space |
| CN110017528A (en) * | 2019-04-04 | 2019-07-16 | 西安交通大学 | A kind of interior heating system and method extracting underground heat using more piece relay hot tube high-efficiency |
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