CN103925739A - Closed single-tube vertical borehole ground-coupled heat pump system - Google Patents
Closed single-tube vertical borehole ground-coupled heat pump system Download PDFInfo
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- CN103925739A CN103925739A CN201310008867.7A CN201310008867A CN103925739A CN 103925739 A CN103925739 A CN 103925739A CN 201310008867 A CN201310008867 A CN 201310008867A CN 103925739 A CN103925739 A CN 103925739A
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- buried pipe
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000001174 ascending effect Effects 0.000 claims abstract description 13
- 239000002689 soil Substances 0.000 claims abstract description 7
- 239000003673 groundwater Substances 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 230000002950 deficient Effects 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 12
- 230000001172 regenerating effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a novel closed single-tube vertical borehole ground-coupled heat pump system, and relates to the field of shallow geothermal energy utilization. The system comprises a single-tube heat exchange well, an ascending tube, a descending tube, a circulating pump, a wellhead device and a heat pump. The system can be arranged in a geologic region which is easily softened by water, has rich underground fissures and is short of underground water resources and poor in underground water quality. By the aid of the characteristic of relative stability of underground shallow rock-soil temperature, the temperature is kept at 15-20 DEG C all the year round and cannot be affected by the atmospheric environment temperature, stable cold and heat sources can be provided for a heat pump unit, and the efficiency of the heat pump unit is improved. The system is simple to construct and high in single-well heat exchange amount and has the advantages that the system is environmentally friendly and high in heat exchange amount, drilling expenses and drilling amount are reduced, occupied area is saved, operating cost is low and the like.
Description
Technical field
The present invention relates to a kind of shallow layer geothermal energy and utilize field, particularly a kind of enclosed single-tube perpendicularly buried pipe earth-source hot-pump system.
Background technology
Be accompanied by scientific and technical development, the traditional approach that cooling tower adds boiler need to freeze and heat two cover units because of it, and operating cost is high, and environment is had to pollution, more and more by people, is not accepted.Earth-source hot-pump system utilizes green regenerative resource---shallow layer geothermal energy, can heat, freeze, also can provide domestic hot-water, a tractor serves several purposes, one cover system can be replaced three cover systems of original heating boiler, refrigeration air-conditioner and domestic hot-water's heating, operating cost is low, and pollution-free spendable environmentally friendly, the effective air-conditioning system at present that becomes.
A kind of as earth source heat pump, the individual well heat exchange amount of conventional perpendicularly buried pipe earth-source hot-pump system is low, and boring pipe laying quantity is many, and floor space is large, and for rock geology, drilling cost is high.These have all limited the development of conventional perpendicularly buried pipe earth-source hot-pump system, how to strengthen individual well heat exchange amount, and reduce drilling hole number, save floor space and drilling cost, be the major issue that current conventional perpendicularly buried pipe earth-source hot-pump system need to solve.
Summary of the invention
For addressing the above problem, the object of the present invention is to provide a kind of renewable, environmental friendliness, heat exchange amount is high, reduces drilling cost and drilling hole number, saves the enclosed single-tube perpendicularly buried pipe earth-source hot-pump system of the features such as floor space operating cost is low.
For achieving the above object, technical scheme of the present invention is: a kind of enclosed single-tube perpendicularly buried pipe earth-source hot-pump system, comprise single tube heat exchange well, ascending tube, down pipe, ground circulating pump, wellhead assembly, heat pump and wall protection pipe, above-mentioned ascending tube is connected and is passed in above-mentioned single tube heat exchange well by above-mentioned wellhead assembly with above-mentioned down pipe.
Further, above-mentioned omnidistance wall protection pipe is located at and is met the geologic province that water easily softens, underground crack is abundant, groundwater resources are deficient, groundwater quality is poor.
Further, at the bottom of above-mentioned ascending tube gos deep into described single tube heat exchange well, described down pipe is communicated with above-mentioned single tube heat exchange well by connecting above-mentioned wellhead assembly.
Further, the ascending tube of above-mentioned single tube heat exchange well is flexible compound insulating tube.
Further, the wall protection pipe of above-mentioned single tube heat exchange well is good heat-transfer, axial stiffness, and the corrugated stainless steel tubing of radial compliance, stainless steel can determine according to concrete hydrogeologic condition.
Further, above-mentioned corrugated stainless steel tubing can adopt flange to connect or weld and make.
Adopt the beneficial effect of the technical program to be: the shallow layer geothermal energy of one of regenerative resource of employing is advocated in described system utilization at present, take water as medium, by piercing underground single tube heat exchange well, water is introduced to the bosom of well, water circulates in well, by wall protection pipe and surrounding soil heat exchange, and conventional perpendicularly buried pipe earth-source hot-pump system is in the isolated lower and surrounding soil heat exchange of one deck plastic tube wall, the heat transfer coefficient of wall protection pipe is about 20 times of pipe laying heat transfer coefficient routinely, visible single-tube perpendicularly buried pipe earth-source hot-pump system heat exchange property is much better than conventional perpendicularly buried pipe heat pump, and Cheng Jinghou is without grouting backfill sealing of hole, drilling cost and drilling hole number can have been reduced, save floor space.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of enclosed single-tube of the present invention perpendicularly buried pipe earth-source hot-pump system embodiment 1.
The represented corresponding component title of numeral in figure:
1. single tube heat exchange well 2. ascending tube 3. down pipe 4. ground circulating pump 5. wellhead assembly 6. heat pump 7. wall protection pipes 8. connect building load side 9. and meet easily softening geology of water.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
Referring to Fig. 1, as shown in legend wherein, a kind of enclosed single-tube perpendicularly buried pipe earth-source hot-pump system, comprise single tube heat exchange well (1), ascending tube (2), down pipe (3), ground circulating pump (4), wellhead assembly (5), heat pump (6) and wall protection pipe (7), wherein, ascending tube (2) is selected the flexible compound insulating tube of good heat insulating, the wall protection pipe (7) of single tube heat exchange well (1) is selected good heat-transfer, axial stiffness, the corrugated stainless steel tubing of radial compliance, stainless steel determines according to concrete hydrogeologic condition, system adopts the enclosed well drilling technology of omnidistance wall protection pipe, for the borehole wall, meeting water easily softens, underground crack is abundant, groundwater resources are deficient, the poor chance water of groundwater quality is softening geology (9) easily, utilize the metastable characteristic of underground ground temperature, remain on suitable 15-20 ℃ throughout the year,
In system running, by ground water circulating pump (4), extract the water source of single tube heat exchange well (1) bottom, and deliver to heat pump (6) evaporimeter (condenser), shallow layer geothermal energy is passed to evaporimeter (condenser), water source after heat exchange is got back to the top of single tube heat exchange well (1), water circulates in well, by wall protection pipe (7) and surrounding soil, carry out efficient heat exchange, by ascending tube (2), by ground circulating pump (4), extracted and deliver to heat pump (6), complete heat exchange cyclic process.
Adopt the beneficial effect of the technical program to be: by the technical scheme in the present invention, the shallow layer geothermal energy of one of regenerative resource of employing is advocated in utilization at present, take water as medium, by piercing underground single tube heat exchange well, water is introduced to the bosom of well, water circulates in well, by wall protection pipe and surrounding soil heat exchange, and conventional perpendicularly buried pipe earth-source hot-pump system is in the isolated lower and surrounding soil heat exchange of one deck plastic tube wall, the heat transfer coefficient of wall protection pipe is about 20 times of pipe laying heat transfer coefficient routinely, visible single-tube perpendicularly buried pipe earth-source hot-pump system heat exchange property is much better than conventional perpendicularly buried pipe heat pump, and Cheng Jinghou is without grouting backfill sealing of hole, drilling cost and drilling hole number can have been reduced, save floor space, for the plot that has suitable subsurface structure, (it is easily softening that the borehole wall is met water, underground crack is abundant, groundwater resources are deficient, groundwater quality is poor), can utilize underground shallow layer geothermal energy for heat and the domestic hot-water of freezing by enclosed single-tube perpendicularly buried pipe system.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, and these all belong to protection scope of the present invention.
Claims (6)
1. enclosed single-tube perpendicularly buried pipe earth-source hot-pump system, utilize the metastable characteristic of underground rock-soil layer temperature, with water as heat transferring medium, it is characterized in that: described enclosed single-tube perpendicularly buried pipe earth-source hot-pump system, comprise single tube heat exchange well, ascending tube, down pipe, ground circulating pump, wellhead assembly, heat pump and wall protection pipe, described ascending tube is connected and is passed in described single tube heat exchange well by described wellhead assembly with described down pipe.
2. enclosed single-tube perpendicularly buried pipe earth-source hot-pump system according to claim 1, is characterized in that: described omnidistance wall protection pipe is located at and is met the geologic province that water easily softens, underground crack is abundant, groundwater resources are deficient, groundwater quality is poor.
3. enclosed single-tube perpendicularly buried pipe earth-source hot-pump system according to claim 1, is characterized in that: at the bottom of described ascending tube gos deep into described single tube heat exchange well, described down pipe is communicated with described single tube heat exchange well by connecting described wellhead assembly.
4. enclosed single-tube perpendicularly buried pipe earth-source hot-pump system according to claim 1, is characterized in that: the ascending tube of described single tube heat exchange well is flexible compound insulating tube.
5. enclosed single-tube perpendicularly buried pipe earth-source hot-pump system according to claim 1, is characterized in that: the wall protection pipe of described single tube heat exchange well adopts axial stiffness, the corrugated stainless steel tubing of radial compliance.
6. single-tube perpendicularly buried pipe earth-source hot-pump system according to claim 6, is characterized in that: described corrugated stainless steel tubing can adopt flange to connect or welding is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310008867.7A CN103925739A (en) | 2013-01-10 | 2013-01-10 | Closed single-tube vertical borehole ground-coupled heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310008867.7A CN103925739A (en) | 2013-01-10 | 2013-01-10 | Closed single-tube vertical borehole ground-coupled heat pump system |
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| CN103925739A true CN103925739A (en) | 2014-07-16 |
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| CN201310008867.7A Pending CN103925739A (en) | 2013-01-10 | 2013-01-10 | Closed single-tube vertical borehole ground-coupled heat pump system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106940032A (en) * | 2017-04-17 | 2017-07-11 | 中能服能源科技股份有限公司 | A kind of single well type deep geothermal heat utilizes direct combustion type heat pump heat distribution system |
| CN108005617A (en) * | 2018-01-15 | 2018-05-08 | 刘风岐 | Individual well exploits closed recharge system |
| CN110131782A (en) * | 2019-04-29 | 2019-08-16 | 中国科学院广州能源研究所 | A Geothermal Single Well Enhanced Heat Exchange System |
| CN110131781A (en) * | 2019-04-29 | 2019-08-16 | 中国科学院广州能源研究所 | A medium-deep geothermal well irrigation system |
| CN110131780A (en) * | 2019-04-29 | 2019-08-16 | 中国科学院广州能源研究所 | A geothermal single well heat conduction plus convection whole well section heat extraction system |
| CN113639304A (en) * | 2020-05-11 | 2021-11-12 | 中国石油化工集团有限公司 | Forced convection heat exchange type geothermal water horizontal well single well heat supply system |
| CN113899092A (en) * | 2021-11-01 | 2022-01-07 | 中煤矿业集团有限公司 | Deep well heat exchange device and installation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3139868A1 (en) * | 1981-10-07 | 1983-04-21 | Helmut 6331 Schöffengrund Hund | Probe for heat pumps |
| CN1667333A (en) * | 2004-03-08 | 2005-09-14 | 徐生恒 | Air-conditioning system using earth as heat source by heat pump |
| CN101581517A (en) * | 2009-06-16 | 2009-11-18 | 天津大学 | Heat pump system of single-loop geothermal underground heat exchanger |
| JP2011007447A (en) * | 2009-06-26 | 2011-01-13 | Ohbayashi Corp | Method of installing underground heat exchanger |
| CN201740314U (en) * | 2010-05-25 | 2011-02-09 | 易治平 | Tube heat exchanger for ground source heat pump |
| CN203132204U (en) * | 2013-01-10 | 2013-08-14 | 江苏望远节能科技开发有限公司 | Closed single-pipe type vertical buried-pipe ground-source heat pump system |
-
2013
- 2013-01-10 CN CN201310008867.7A patent/CN103925739A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3139868A1 (en) * | 1981-10-07 | 1983-04-21 | Helmut 6331 Schöffengrund Hund | Probe for heat pumps |
| CN1667333A (en) * | 2004-03-08 | 2005-09-14 | 徐生恒 | Air-conditioning system using earth as heat source by heat pump |
| CN101581517A (en) * | 2009-06-16 | 2009-11-18 | 天津大学 | Heat pump system of single-loop geothermal underground heat exchanger |
| JP2011007447A (en) * | 2009-06-26 | 2011-01-13 | Ohbayashi Corp | Method of installing underground heat exchanger |
| CN201740314U (en) * | 2010-05-25 | 2011-02-09 | 易治平 | Tube heat exchanger for ground source heat pump |
| CN203132204U (en) * | 2013-01-10 | 2013-08-14 | 江苏望远节能科技开发有限公司 | Closed single-pipe type vertical buried-pipe ground-source heat pump system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106940032A (en) * | 2017-04-17 | 2017-07-11 | 中能服能源科技股份有限公司 | A kind of single well type deep geothermal heat utilizes direct combustion type heat pump heat distribution system |
| CN108005617A (en) * | 2018-01-15 | 2018-05-08 | 刘风岐 | Individual well exploits closed recharge system |
| CN110131782A (en) * | 2019-04-29 | 2019-08-16 | 中国科学院广州能源研究所 | A Geothermal Single Well Enhanced Heat Exchange System |
| CN110131781A (en) * | 2019-04-29 | 2019-08-16 | 中国科学院广州能源研究所 | A medium-deep geothermal well irrigation system |
| CN110131780A (en) * | 2019-04-29 | 2019-08-16 | 中国科学院广州能源研究所 | A geothermal single well heat conduction plus convection whole well section heat extraction system |
| CN113639304A (en) * | 2020-05-11 | 2021-11-12 | 中国石油化工集团有限公司 | Forced convection heat exchange type geothermal water horizontal well single well heat supply system |
| CN113899092A (en) * | 2021-11-01 | 2022-01-07 | 中煤矿业集团有限公司 | Deep well heat exchange device and installation method thereof |
| CN113899092B (en) * | 2021-11-01 | 2024-02-23 | 中煤矿业集团有限公司 | Deep well heat exchange device and installation method thereof |
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Application publication date: 20140716 |