CN104374119A - Different-hole vertical underground heat exchanger process - Google Patents
Different-hole vertical underground heat exchanger process Download PDFInfo
- Publication number
- CN104374119A CN104374119A CN201310407896.0A CN201310407896A CN104374119A CN 104374119 A CN104374119 A CN 104374119A CN 201310407896 A CN201310407896 A CN 201310407896A CN 104374119 A CN104374119 A CN 104374119A
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- China
- Prior art keywords
- heat exchanger
- different
- hole vertical
- ground heat
- underground heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T2201/00—Prediction; Simulation
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/09—Improving heat transfers
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a different-hole vertical underground heat exchanger process good in heat exchange effect. Two ends of a U-shaped opening of a different-hole vertical underground heat exchanger are respectively installed in different vertical holes. According to the different-hole vertical underground heat exchanger process, temperature difference exists between a water inlet section and a water return section, a water inlet section vertical pipeline of a structural U-shaped pipe of the different-hole vertical underground heat exchanger is about 4 m away from a water return section vertical pipeline, all of heat transferred by the water inlet section vertical pipeline is absorbed by surrounding soil, accordingly the thermal short-circuiting phenomenon occurred on a same-hole vertical underground heat exchanger is well avoided by means of the different-hole vertical underground heat exchanger, and heat exchange efficiency is improved by 20%-30%. Compared with the same-hole vertical underground heat exchanger, the project amount is saved by 20%-25%, the construction cost is saved by 10%-15%, and the different-hole vertical underground heat exchanger process has remarkable economic benefit.
Description
Technical field
The present invention relates to earth source heat pump field, particularly relate to a kind of different hole vertical ground heat exchanger technique.
Background technology
Be subdivided into again according to the catalogue earth source heat pump in " earth-source hot-pump system engineering legislation " (GB50366-2009): buried pipe heat exchange system, underground water heat-exchange system, heat exchange system for surface water three kinds of forms, and buried pipe heat exchange system can be subdivided into horizontal and vertical ground heat exchanger, in current domestic and international various data report vertical ground heat exchanger structural form be that first boring a diameter is on the ground about about 200mm, the vertical holes of dark 50-150mm, then in hole, U-tube is installed, this is same hole vertical ground heat exchanger, this benefit is, easy for installation, only U-shaped pipe directly need be put into, but this vertical ground heat exchanger heat transfer effect is poor, if just needs punching in a large number when needing a large amount of heat exchange, wasting manpower and material resources, cost is very high, and when use with hole vertically buried tube heat exchanger time, because inlet segment pipeline and backwater section pipeline are in same hole, from heat trnasfer principle, temperature difference is had namely to there is phenomenon of Heat between two segment pipes, so have minor heat to have been taken back earth-source hot-pump system by the absorption of backwater section pipeline again, cause the hot short-circuit loss of heat exchanger self.
Summary of the invention
According to above technical problem, invention provides a kind of different hole vertical ground heat exchanger technique of good effect of heat exchange, the U-shaped mouth two ends of described different hole vertical ground heat exchanger are arranged in different vertical holes respectively, and a kind of different hole vertical ground heat exchanger technique, is characterized in that:
1), carry out Site Selection, then utilize in the position chosen boring bar tool to bore two holes perpendicular to the ground;
2), then utilize small-sized horizontal orientation rig two vertical holes to be drilled through, form U-shaped hole path;
3), by high strength polyethylene pipe road penetrate in U-shaped hole, the diameter of pipeline can be DN25-DN40 as required; Because polyethylene pipe is a kind of engineering material, there is suitable pliability, according to its bending radius >=1 of material times pipe diameter that performance is chosen, concrete mounting process is: utilize drilling rod in U line pipe road, penetrate the steel wire rope of diameter an about 4mm in advance, recycle this steel wire rope polyethylene pipe to be drawn in U-shaped pipeline, namely define different hole vertical ground heat exchanger;
4), by each group of different hole vertical ground heat exchanger connect, then carry out the water pressure test, no problem rear different hole vertical ground heat exchanger completes.
Described two bore dias are that 200mm-500mm, dark 30m-200m are at a distance of 3-6m.
The quantity of described pipeline is N root, N >=1.
Beneficial effect of the present invention is: the inlet segment vertical portion of U-shaped pipe of the present invention and the vertical portion of backwater section are arranged in two holes closed on respectively, the spacing in hole can at about 4m, good heat transfer effect can be reached, recirculated water is full of in polyethylene U-shaped pipe of the present invention, when temperature height than soil of the temperature of water, the heat of water can be delivered in the soil of surrounding, thus reduces the temperature of water, reaches the effect of heat exchange; Inlet segment of the present invention and backwater section have a temperature difference, the inlet segment vertical pipe of the structure U-shaped pipe of different hole vertical ground heat exchanger and backwater section vertical pipe gathering about 4m, the net quantity of heat that inlet segment vertical pipe spreads out of all is absorbed by surrounding soil, thus different hole vertical ground heat exchanger well avoids the hot short circuit phenomenon that same hole vertical ground heat exchanger occurs, heat exchange efficiency improves 20-30%, quantities saves 20-25% compared with the vertical ground heat exchanger of same hole, engineering cost saves 10-15%, has significant economic benefit.
Detailed description of the invention
Below the present invention is further described:
Embodiment 1
1), carry out Site Selection, then utilize in the position chosen boring bar tool to bore two holes perpendicular to the ground, described bore dia is 200mm, dark 100m, and holes is at a distance of 4m;
2), then utilize small-sized horizontal orientation rig two vertical holes to be drilled through, form U-shaped hole path;
3), high strength polyethylene pipe road is penetrated in U-shaped hole, the diameter of pipeline is DN40 as required, the quantity of pipeline is 2, because polyethylene pipe is a kind of engineering material, there is suitable pliability, according to its bending radius >=2.5 of performance times pipe diameter of chosen material, concrete mounting process is: utilize drilling rod in U line pipe road, penetrate the steel wire rope of diameter an about 4mm in advance, recycle this steel wire rope polyethylene pipe to be drawn in U-shaped pipeline, namely define different hole vertical ground heat exchanger;
4), by each group of different hole vertical ground heat exchanger connect, then carry out the water pressure test, no problem rear different hole vertical ground heat exchanger completes.
Embodiment 2
During operation, water is injected in the polyethylene pipe of different hole vertical ground heat exchanger, because the coolant-temperature gage in pipeline is higher than the soil moisture outside pipeline, so the heat that inlet segment vertical pipe spreads out of is absorbed by surrounding soil, the spacing of holes is at about 4m, apart from each other, when water is exported by water return pipeline, the heat that can not have been absorbed by soil again transmits in Huis water pipe, completes heat exchange, water temperature obviously declines, and reaches heat exchange object.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvement, and these improvement also should be considered as protection scope of the present invention.
Claims (3)
1. a different hole vertical ground heat exchanger technique, the U-shaped mouth two ends of described different hole vertical ground heat exchanger are arranged in different vertical holes respectively, and a kind of different hole vertical ground heat exchanger technique, is characterized in that:
1), carry out Site Selection, then utilize in the position chosen boring bar tool to bore two holes perpendicular to the ground;
2), then utilize small-sized horizontal orientation rig two vertical holes to be drilled through, form U-shaped hole path;
3), by high strength polyethylene pipe road penetrate in U-shaped hole, the diameter of pipeline can be DN25-DN40 as required; Because polyethylene pipe is a kind of engineering material, there is suitable pliability, according to its bending radius >=2.5 of performance times pipe diameter of chosen material, concrete mounting process is: utilize drilling rod in U line pipe road, penetrate the steel wire rope of diameter an about 4mm in advance, recycle this steel wire rope polyethylene pipe to be drawn in U-shaped pipeline, namely define different hole vertical ground heat exchanger;
4), by each group of different hole vertical ground heat exchanger connect, then carry out the water pressure test, no problem rear different hole vertical ground heat exchanger completes.
2., according to different hole according to claim 1 vertical ground heat exchanger, described two bore dias are that 200mm-500mm, dark 30m-200m are at a distance of 3-6m.
3., according to different hole according to claim 1 vertical ground heat exchanger, the quantity of described U-shaped pipeline is N root, N >=1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310407896.0A CN104374119A (en) | 2013-09-10 | 2013-09-10 | Different-hole vertical underground heat exchanger process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310407896.0A CN104374119A (en) | 2013-09-10 | 2013-09-10 | Different-hole vertical underground heat exchanger process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104374119A true CN104374119A (en) | 2015-02-25 |
Family
ID=52553183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310407896.0A Pending CN104374119A (en) | 2013-09-10 | 2013-09-10 | Different-hole vertical underground heat exchanger process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104374119A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002054850A (en) * | 2000-08-08 | 2002-02-20 | Nippon Steel Corp | Underground heat exchange system |
| JP2004271129A (en) * | 2003-03-11 | 2004-09-30 | Tone Boring Co Ltd | Underground heat exchange system |
| DE102005060970A1 (en) * | 2005-12-20 | 2007-06-28 | FITR-Gesellschaft für Innovation im Tief- und Rohrleitungsbau Weimar mbH | Geothermal power station has deep vertical shaft filled with a first good heat conductor and a second thermally insulated section |
| JP2009228419A (en) * | 2008-02-27 | 2009-10-08 | Jfe Steel Corp | Construction method for geothermal heat exchanger, hollow pipe body used in this method, and casing |
| CN201488401U (en) * | 2009-09-27 | 2010-05-26 | 北京依科瑞德地源科技有限责任公司 | Ground source heat pump heat exchanger |
| CN202304105U (en) * | 2011-10-12 | 2012-07-04 | 重庆交通大学 | Vertical double S-shaped underground heat exchanger for ground source heat pump |
| CN203177707U (en) * | 2012-08-14 | 2013-09-04 | 陕西四季春清洁热源股份有限公司 | Buried pipe with reinforced heat exchange performance of single U-shaped pipe heat exchanger |
-
2013
- 2013-09-10 CN CN201310407896.0A patent/CN104374119A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002054850A (en) * | 2000-08-08 | 2002-02-20 | Nippon Steel Corp | Underground heat exchange system |
| JP2004271129A (en) * | 2003-03-11 | 2004-09-30 | Tone Boring Co Ltd | Underground heat exchange system |
| DE102005060970A1 (en) * | 2005-12-20 | 2007-06-28 | FITR-Gesellschaft für Innovation im Tief- und Rohrleitungsbau Weimar mbH | Geothermal power station has deep vertical shaft filled with a first good heat conductor and a second thermally insulated section |
| JP2009228419A (en) * | 2008-02-27 | 2009-10-08 | Jfe Steel Corp | Construction method for geothermal heat exchanger, hollow pipe body used in this method, and casing |
| CN201488401U (en) * | 2009-09-27 | 2010-05-26 | 北京依科瑞德地源科技有限责任公司 | Ground source heat pump heat exchanger |
| CN202304105U (en) * | 2011-10-12 | 2012-07-04 | 重庆交通大学 | Vertical double S-shaped underground heat exchanger for ground source heat pump |
| CN203177707U (en) * | 2012-08-14 | 2013-09-04 | 陕西四季春清洁热源股份有限公司 | Buried pipe with reinforced heat exchange performance of single U-shaped pipe heat exchanger |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20170620 |
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| AD01 | Patent right deemed abandoned |