CN107514838A - Mid-deep strata geothermal-source heat pump system - Google Patents
Mid-deep strata geothermal-source heat pump system Download PDFInfo
- Publication number
- CN107514838A CN107514838A CN201710907384.9A CN201710907384A CN107514838A CN 107514838 A CN107514838 A CN 107514838A CN 201710907384 A CN201710907384 A CN 201710907384A CN 107514838 A CN107514838 A CN 107514838A
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- Prior art keywords
- mid
- deep strata
- heat
- circulatory mediator
- source
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
- F24T10/13—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes
- F24T10/17—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes using tubes closed at one end, i.e. return-type tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T2010/50—Component parts, details or accessories
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
-
- 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 invention discloses a kind of mid-deep strata geothermal-source heat pump system, mid-deep strata underground heat bore hole heat exchanger is installed in rock-soil layer；Mid-deep strata underground heat bore hole heat exchanger includes outer tube and inner sleeve；Outer tube bottom and side wall closing, inner sleeve are placed in outer tube, and inner sleeve bottom end opening connects with outer sleeve bottom；Outer sleeve upper mouth connects circulatory mediator feed line；Inner sleeve upper port connection circulatory mediator outflow pipeline；The other end of circulatory mediator feed line and circulatory mediator outflow pipeline is connected by the vaporizer side of high temperature heat source type water resource heat pump main frame；Ground source circulating pump is arranged on circulatory mediator feed line, is flowed downward for driving cycle medium along outer sleeve inner wall and the space of inner sleeve pipe outer wall.The mid-deep strata geothermal-source heat pump system of the present invention, can only exchange mid-deep strata geothermal energy for, it is surface structures heat supply to take full advantage of mid-deep strata geothermal energy under the premise of not pumping underground hot water.
Description
Technical field
The present invention relates to mid-deep strata geothermal energy development to utilize field, more particularly to a kind of mid-deep strata geothermal-source heat pump system.
Background technology
At present, " haze " has become the great environmental problem in China, especially winter " haze " especially severe, wherein coal-fired
Granular material discharged caused by heat supply is one of major reason caused by haze.Government department attaches great importance to this problem, issue
Multinomial policy, to change traditional heat supply mode, utilize clean energy resource heat supply, such as " coal changes combustion ", " coal changes electricity " policy.
Geothermal energy is as a kind of clean energy resource, and it is developed rational utilization, receives increasing attention, country
The Committee of Development and Reform, Bureau of Energy issue jointly in January, 2017《Geothermal energy development utilizes " 13 " planning》（Hair changes the energy [2017]
No. 158）.
China has vast territory, and geothermal energy resources enrich, and is investigated according to Ministry of Land and Resources, and national 336 region above cities are shallow
The equivalent 700,000,000 mark coal of layer geothermal energy year Allowable exploitation quantity；The equivalent 1.25 trillion tons of marks coal of national geothermal resource of hydrothermal type amount, Nian Ke
The equivalent 1,900,000,000 tons of marks coal of production of resources amount；And the equivalent 856,000,000,000,000 tons of marks coal of hot dry rock stock number of buried depth 3000-10000 rice.
About 3 DEG C/100 meters of China's Average geothermal gradient.I.e. below thermostat layer, per 100 meters of increase downwards, ground temperature increase is about
3℃。
At present, Winter heat supply can be used in for exploitation of geothermal, conventional technology there are two kinds：Geothermal source heat pump skill
Art；Directly exploit mid-deep strata GEOTHERMAL WATER heat supply process.But both technologies have the defects of certain, have to be solved.
Shallow ground source heat pump techniques：Geothermal well floor space is big, using being restricted；Summer in winter cooling and heating load is uneven
Weighing apparatus, system energy efficiency decay are serious.
Directly exploit mid-deep strata GEOTHERMAL WATER heat supply process：The area only with abundant Geothermal Resource could use,
Using being restricted；Direct recovery of subterranean hot water, recharge difficulty is larger, causes the waste and pollution of groundwater resources, and for a long time
Groundwater abstraction, geologic structure be present and collapse equivalent risk, be a kind of energy utilization patterns of unsustainable development.Current political affairs at different levels
Mansion authorities have begun to forbid recovery of subterranean hot water to be used for Winter heat supply.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of mid-deep strata geothermal-source heat pump system, can not extract underground
Only exchange mid-deep strata geothermal energy under the premise of hot water for, it is surface structures heat supply to take full advantage of mid-deep strata geothermal energy.
In order to solve the above technical problems, mid-deep strata geothermal-source heat pump system provided by the invention, it includes mid-deep strata underground heat
Bore hole heat exchanger 1, source circulating pump 2, high temperature heat source type water resource heat pump main frame 3；
The mid-deep strata underground heat bore hole heat exchanger 1 is installed in the drilling of rock-soil layer 9；
The mid-deep strata underground heat bore hole heat exchanger 1 includes outer tube 11 and inner sleeve 12；
The bottom of outer tube 11 and side wall closing；
The inner sleeve 12 is placed in the outer tube 11, and the bottom end opening of inner sleeve 12 is the same as the bottom of outer tube 11
Connection；
The upper port of outer tube 11 connects circulatory mediator feed line；
The upper port of the inner sleeve 12 connection circulatory mediator outflow pipeline；
The other end of the other end of the circulatory mediator feed line and circulatory mediator outflow pipeline passes through high temperature heat source type
Vaporizer side connection in water resource heat pump main frame 3；
Described ground source circulating pump 2 is arranged on circulatory mediator feed line, for driving cycle medium along mid-deep strata geothermal well
The space of the interior inwall of 1 outer tube of heat exchanger 11 and the outer wall of inner sleeve 12 flows downward.
Preferably, the mid-deep strata underground heat bore hole heat exchanger 1 is installed on the rock-soil layer that depth is 1000 meters to 4000 meters
In 9 drillings.
Preferably, the circulatory mediator is water or ethylene glycol solution.
Preferably, the high temperature heat source type water resource heat pump main frame 3 is to building air conditioning end system heat supply.
Preferably, the building air conditioning end system is fan coil system, radiant floor heating system or building life
Hot water preparation system.
Preferably, mid-deep strata geothermal-source heat pump system also includes cooling tower 4, coolant circulation pump 5, the first valve 61
, the second valve 62, the 3rd valve 63 and the 4th valve 64；
Cooling feed line one end is connected with circulatory mediator feed line in first threeway 71；
Pipeline connection is flowed out in second threeway 72 with circulatory mediator in cooling outflow pipeline one end；
The other end of cooling feed line connects with the water inlet of cooling tower 4；
The other end of cooling outflow pipeline connects with the delivery port of cooling tower 4；
The coolant circulation pump 5 be arranged on cooling outflow pipeline, for drive through cooling tower 4 cooling after circulatory mediator to
Circulatory mediator flows out tube runs；
Described ground source circulating pump 2 is arranged on the outer tube 11 of mid-deep strata underground heat bore hole heat exchanger 1 with first threeway 71
Between circulatory mediator feed line on；
First valve 61 is arranged on ground source circulating pump 2 and flows into pipe with the circulatory mediator between first threeway 71
Lu Shang；
Second valve 62 be arranged on the inner sleeve 12 of mid-deep strata underground heat bore hole heat exchanger 1 with second threeway 72 it
Between circulatory mediator outflow pipeline on；
3rd valve 63 is arranged on the cooler in cooling tower 4 and flows into pipe with the cooling between first threeway 71
Lu Shang；
4th valve 64 is arranged on the coolant circulation pump 5 with the cooling outflow pipeline between second threeway 72
On.
The mid-deep strata geothermal-source heat pump system of the present invention, mid-deep strata underground heat bore hole heat exchanger 1 is using double-jacket tube formula heat exchange knot
Structure, buried in rock-soil layer 9, circulatory mediator flows downward under the driving of ground source circulating pump 2 along outer tube 11, to flowing down
During dynamic, exchanged heat with surrounding soil, rock, temperature rise；Circulatory mediator reaches enter after the bottom of outer tube 11 in
Sleeve pipe 12 flows up, and outflow mid-deep strata underground heat bore hole heat exchanger 1 enters high temperature heat source type water resource heat pump main frame 3, as high temperature
The thermal source of heat source type water resource heat pump main frame 3, after circulatory mediator discharges heat, temperature reduces, and is again introduced into mid-deep strata geothermal well
In heat exchanger 1, closed cycle is formed, constantly extracts underground heat energy.The mid-deep strata geothermal-source heat pump system of the present invention, can be not
Only exchange mid-deep strata geothermal energy under the premise of pumping underground hot water for, take full advantage of mid-deep strata geothermal energy, and pass through high temperature heat source type
For water resource heat pump main frame 3 to building air conditioning end system heat supply, heat efficiency is high, has saved the energy, without disposal of pollutants, has played and control
Dirt subtracts the effect of haze.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the accompanying drawing used required for the present invention is made below simple
Introduce, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ordinary skill people
For member, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the example structure schematic diagram of mid-deep strata geothermal-source heat pump system one of the present invention.
Description of reference numerals in figure：
1 mid-deep strata underground heat bore hole heat exchanger；2 ground source circulating pumps；3 high temperature heat source type water resource heat pump main frames；4- cooling towers；5
Coolant circulation pump；9 rock-soil layers；11 outer tubes；12 inner sleeves；61 first valves；62 second valves；63 the 3rd valves； 64
4th valve；71 first threeways；72 second threeways.
Embodiment
Below in conjunction with accompanying drawing, clear, complete description is carried out to the technical scheme in the present invention, it is clear that described
Embodiment is the part of the embodiment of the present invention, rather than whole embodiments.It is general based on the embodiment in the present invention, this area
All other embodiment that logical technical staff is obtained on the premise of creative work is not made, belongs to protection of the present invention
Scope.
Embodiment one
As shown in figure 1, mid-deep strata geothermal-source heat pump system include mid-deep strata underground heat bore hole heat exchanger 1, source circulating pump 2, high
Temperature-heat-source type water resource heat pump main frame 3；
The mid-deep strata underground heat bore hole heat exchanger 1 is installed in the drilling of rock-soil layer 9；
The mid-deep strata underground heat bore hole heat exchanger 1 includes outer tube 11 and inner sleeve 12；
The bottom of outer tube 11 and side wall closing；
The inner sleeve 12 is placed in the outer tube 11, and the bottom end opening of inner sleeve 12 connects with the bottom of outer tube 11；
The upper port of outer tube 11 connects circulatory mediator feed line；
The upper port of the inner sleeve 12 connection circulatory mediator outflow pipeline；
The other end of the other end of the circulatory mediator feed line and circulatory mediator outflow pipeline passes through high temperature heat source type
Vaporizer side connection in water resource heat pump main frame 3, thermal source is provided for high temperature heat source type water resource heat pump main frame 3；
Described ground source circulating pump 2 is arranged on circulatory mediator feed line, for driving cycle medium along mid-deep strata geothermal well
The space of the inwall of 1 outer tube of heat exchanger 11 and the outer wall of inner sleeve 12 flows downward.
Bored preferably, the mid-deep strata underground heat bore hole heat exchanger 1 is installed on the rock-soil layer 9 that depth is 1000 meters to 4000 meters
Kong Zhong, mid-deep strata geothermal energy can be made full use of.
Preferably, the circulatory mediator is water or ethylene glycol solution.
Preferably, the high temperature heat source type water resource heat pump main frame 3 is to building air conditioning end system heat supply.
The building air conditioning end system can be fan coil system, radiant floor heating system or building domestic hot-water
Preparation system etc..
Preferably, about 15 DEG C~60 DEG C excursions of temperature of circulatory mediator outflow mid-deep strata underground heat bore hole heat exchanger 1, high
The main frame of temperature-heat-source type water resource heat pump main frame 3 can adapt in the heat source temperature of 15 DEG C~60 DEG C excursions, heat efficiency 7.5 with
On.The mid-deep strata underground heat that high temperature heat source type water resource heat pump main frame 3 is extracted using circulatory mediator, it is empty to building by heat pump principle
Adjust end system heat supply, 40 DEG C~55 DEG C of heat supply temperature.
The mid-deep strata geothermal-source heat pump system of embodiment one, mid-deep strata underground heat bore hole heat exchanger 1 is using the heat exchange of double-jacket tube formula
Structure, buried in rock-soil layer 9, circulatory mediator flows downward, downward under the driving of ground source circulating pump 2 along outer tube 11
In flow process, exchanged heat with surrounding soil, rock, temperature rise；Circulatory mediator enters after reaching the bottom of outer tube 11
Inner sleeve 12 flows up, and outflow mid-deep strata underground heat bore hole heat exchanger 1 enters high temperature heat source type water resource heat pump main frame 3, as height
The thermal source of temperature-heat-source type water resource heat pump main frame 3, after circulatory mediator discharges heat, temperature reduces, and is again introduced into mid-deep strata geothermal well
In interior heat exchanger 1, closed cycle is formed, constantly extracts underground heat energy.
The mid-deep strata geothermal-source heat pump system of embodiment one, can only exchange mid-deep strata under the premise of not pumping underground hot water
Geothermal energy, takes full advantage of mid-deep strata geothermal energy, and by high temperature heat source type water resource heat pump main frame 3 to building air conditioning end system
Heat supply, heat efficiency is high, has saved the energy, without disposal of pollutants, has played a part of pollution treatment and subtract haze.
Embodiment two
Based on embodiment one, mid-deep strata geothermal-source heat pump system also includes cooling tower 4, coolant circulation pump 5, the first valve 61, the
Two valves 62, the 3rd valve 63 and the 4th valve 64；
Cooling feed line one end is connected with circulatory mediator feed line in first threeway 71；
Pipeline connection is flowed out in first threeway 72 with circulatory mediator in cooling outflow pipeline one end；
The other end of cooling feed line connects with the water inlet of cooling tower 4；
The other end of cooling outflow pipeline connects with the delivery port of cooling tower 4；
The coolant circulation pump 5 is arranged on cooling outflow pipeline, for driving the circulatory mediator after the cooling of cooling tower 4 to circulation
Flow on medium effuser road；
Described ground source circulating pump 2 is arranged on the outer tube 11 of mid-deep strata underground heat bore hole heat exchanger 1 between first threeway 71
In circulatory mediator feed line；
First valve 61 is arranged on ground source circulating pump 2 with the circulatory mediator feed line between first threeway 71；
Second valve 62 is arranged on the inner sleeve 12 of mid-deep strata underground heat bore hole heat exchanger 1 with the circulation between second threeway 72
On medium effuser road；
3rd valve 63 is arranged on cooling tower 4 with the cooling feed line between first threeway 71；
4th valve 64 is arranged on the coolant circulation pump 5 with the cooling outflow pipeline between second threeway 72.
The mid-deep strata geothermal-source heat pump system of embodiment two, summer can close the valve of the ground source pipeline switching valve family status one
61 and second valve 62, open the valve 63 of the cooling tower lateral line switching valve family status three and the 4th valve 64, high temperature heat source type water source
Heat pump main frame 3 switches to cooling condition operation, and system is formed by cooling tower 4, coolant circulation pump 5 and high temperature heat source type heat pump main frame 3
Cold operation system, to building air conditioning end system cooling；Winter can close the valve 63 of the cooling tower lateral line switching valve family status three
And the 4th valve 64, open the valve 61 of the ground source pipeline switching valve family status one and the second valve 62, high temperature heat source type water resource heat pump
Main frame 3 switch to heating condition operation, by deep geothermal heat bore hole heat exchanger 1, source circulating pump 2, high temperature heat source type water source heat
Pump main frame 3 forms heating operation system, to building air conditioning end system heat supply.The mid-deep strata geothermal-source heat pump system of embodiment two
System, has winter heating's operating condition and cooling in summer operating condition, improves the utilization rate of system, saves social resources.
The preferred embodiment of the application is these are only, is not used to limit the application.Come for those skilled in the art
Say, the application there can be various modifications and variations.All any modifications within spirit herein and principle, made, it is equal
Replace, improve etc., it should be included within the protection domain of the application.
Claims (6)
1. a kind of mid-deep strata geothermal-source heat pump system, it is characterised in that including mid-deep strata underground heat bore hole heat exchanger（1）, source
Circulating pump（2）, high temperature heat source type water resource heat pump main frame（3）；
The mid-deep strata underground heat bore hole heat exchanger（1）It is installed on rock-soil layer（9）In drilling；
The mid-deep strata underground heat bore hole heat exchanger（1）Including outer tube（11）And inner sleeve（12）；
The outer tube（11）Bottom and side wall closing；
The inner sleeve（12）It is placed in the outer tube（11）It is interior, the inner sleeve（12）The same outer tube of bottom end opening（11）Bottom
Connection；
The outer tube（11）Upper port connects circulatory mediator feed line；
The inner sleeve（12）Upper port connection circulatory mediator outflow pipeline；
The other end of the other end of the circulatory mediator feed line and circulatory mediator outflow pipeline passes through high temperature heat source type
Water resource heat pump main frame（3）Interior vaporizer side connection；
Described ground source circulating pump（2）Circulatory mediator feed line is arranged on, for driving cycle medium along mid-deep strata geothermal well
Interior heat exchanger（1）Outer tube（11）Inwall and inner sleeve（12）The space of outer wall flows downward.
2. mid-deep strata geothermal-source heat pump system according to claim 1, it is characterised in that
The mid-deep strata underground heat bore hole heat exchanger（1）It is installed on the rock-soil layer that depth is 1000 meters to 4000 meters（9）In drilling.
3. mid-deep strata geothermal-source heat pump system according to claim 1, it is characterised in that
The circulatory mediator is water or ethylene glycol solution.
4. mid-deep strata geothermal-source heat pump system according to claim 1, it is characterised in that
The high temperature heat source type water resource heat pump main frame（3）To building air conditioning end system heat supply.
5. mid-deep strata geothermal-source heat pump system according to claim 1, it is characterised in that
The building air conditioning end system is that fan coil system, radiant floor heating system or building domestic hot-water prepare system
System.
6. mid-deep strata geothermal-source heat pump system according to claim 1, it is characterised in that
Mid-deep strata geothermal-source heat pump system also includes cooling tower（4）, coolant circulation pump（5）, the first valve（61）, the second valve
（62）, the 3rd valve（63）And the 4th valve（64）；
Cooling feed line one end is connected with circulatory mediator feed line in first threeway（71）；
Pipeline connection is flowed out in second threeway with circulatory mediator in cooling outflow pipeline one end（72）；
Cool down the other end and cooling tower of feed line（4）Water inlet connection；
The other end and cooling tower of cooling outflow pipeline（4）Delivery port connection；
The coolant circulation pump（5）Cooling outflow pipeline is arranged on, for driving through cooling tower（4）Circulatory mediator after cooling to
Circulatory mediator flows out tube runs；
Described ground source circulating pump（2）It is arranged on mid-deep strata underground heat bore hole heat exchanger（1）Outer tube（11）With first threeway
（71）Between circulatory mediator feed line on；
First valve（61）It is arranged on ground source circulating pump（2）With first threeway（71）Between circulatory mediator flow into pipe
Lu Shang；
Second valve（62）It is arranged on mid-deep strata underground heat bore hole heat exchanger（1）Inner sleeve（12）With second threeway（72）It
Between circulatory mediator outflow pipeline on；
3rd valve（63）It is arranged on cooling tower（4）With first threeway（71）Between cooling feed line on；
4th valve（64）It is arranged on the coolant circulation pump（5）With second threeway（72）Between cooling outflow pipeline
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710907384.9A CN107514838A (en) | 2017-09-29 | 2017-09-29 | Mid-deep strata geothermal-source heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710907384.9A CN107514838A (en) | 2017-09-29 | 2017-09-29 | Mid-deep strata geothermal-source heat pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107514838A true CN107514838A (en) | 2017-12-26 |
Family
ID=60726336
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|---|---|---|---|
| CN201710907384.9A Pending CN107514838A (en) | 2017-09-29 | 2017-09-29 | Mid-deep strata geothermal-source heat pump system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108332450A (en) * | 2018-03-01 | 2018-07-27 | 河北陆特新能源科技有限公司 | Mid-deep strata ground source well closed cycle heat exchange amount lifting system device |
| CN108955040A (en) * | 2018-10-08 | 2018-12-07 | 珠海格力电器股份有限公司 | Integrated refrigeration station and its control method |
| CN109869935A (en) * | 2019-03-07 | 2019-06-11 | 河北工程大学 | A kind of geothermal energy combined running system |
| CN110207408A (en) * | 2019-05-22 | 2019-09-06 | 天津大学 | A kind of mid-deep strata underground heat exchanger that interior caliber accounting is variable |
| WO2021078306A1 (en) * | 2019-10-25 | 2021-04-29 | 甘肃省建材科研设计院有限责任公司 | Mid-depth underground petrothermal heat supply system, and heat supplying method |
| CN113203213A (en) * | 2021-04-07 | 2021-08-03 | 太原理工大学 | Novel ground source heat pump system of artificial aquifer combined with shallow coaxial sleeve |
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| CN110207408A (en) * | 2019-05-22 | 2019-09-06 | 天津大学 | A kind of mid-deep strata underground heat exchanger that interior caliber accounting is variable |
| WO2021078306A1 (en) * | 2019-10-25 | 2021-04-29 | 甘肃省建材科研设计院有限责任公司 | Mid-depth underground petrothermal heat supply system, and heat supplying method |
| CN113203213A (en) * | 2021-04-07 | 2021-08-03 | 太原理工大学 | Novel ground source heat pump system of artificial aquifer combined with shallow coaxial sleeve |
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