WO1981003061A1 - Dispositif pour recuperer la chaleur des eaux souterraines et/ou de la terre attenante aux eaux souterraines - Google Patents

Dispositif pour recuperer la chaleur des eaux souterraines et/ou de la terre attenante aux eaux souterraines Download PDF

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Publication number
WO1981003061A1
WO1981003061A1 PCT/DE1981/000060 DE8100060W WO8103061A1 WO 1981003061 A1 WO1981003061 A1 WO 1981003061A1 DE 8100060 W DE8100060 W DE 8100060W WO 8103061 A1 WO8103061 A1 WO 8103061A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipes
corrugated
groundwater
tube
soil
Prior art date
Application number
PCT/DE1981/000060
Other languages
German (de)
English (en)
Inventor
H Wuerzburger
Original Assignee
Kabel Metallwerke Ghh
H Wuerzburger
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19803015172 external-priority patent/DE3015172A1/de
Priority claimed from DE3047397A external-priority patent/DE3047397C2/de
Application filed by Kabel Metallwerke Ghh, H Wuerzburger filed Critical Kabel Metallwerke Ghh
Priority to BR8108443A priority Critical patent/BR8108443A/pt
Priority to AT0902881A priority patent/AT380099B/de
Priority to NL8120120A priority patent/NL8120120A/nl
Priority to AU71529/81A priority patent/AU7152981A/en
Priority to DK450981A priority patent/DK450981A/da
Publication of WO1981003061A1 publication Critical patent/WO1981003061A1/fr
Priority to FI813491A priority patent/FI813491L/fi

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/18—Pipes provided with plural fluid passages
    • 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
    • F24T10/30—Geothermal collectors using underground reservoirs for accumulating working fluids or intermediate fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal section
    • 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

Definitions

  • the present invention relates to a device for extracting ground heat from the groundwater and / or the ground surrounding the groundwater by means of a probe inserted vertically into the ground from pipes carrying an intermediate carrier medium, of which the pipe or pipes facing the ground with their outer surface on their are completed at the lower end, and the intermediate carrier medium circulating in a closed circuit, the circuit being designed, on the one hand, to be arranged below the surface of the earth in contact with the groundwater and / or the surrounding earth and, on the other hand, connected to the primary side of a heat pump arranged outside the ground.
  • heat exchanger for geothermal use (earth spike) in the form of a few meters long hollow component that is pressed or lowered vertically into the ground and in which flow channels are designed so that a flowing heat transfer fluid in it first down and then is brought up again.
  • the disadvantage here is the relatively short overall length of such components, which is already limited to 5 to 6 m due to the transport.
  • the attempt to extract heat from the ground is limited to the near-surface area. Long-term operability and operational safety are not guaranteed due to the risk of premature freezing in such systems working near the surface.
  • the invention is therefore based on the object of creating a possibility which, in spite of the connection to the groundwater or the groundwater area, means no intervention in the groundwater balance and works without problems.
  • the pipe or pipes facing the ground with their outer surface are designed as corrugated pipes closed at the bottom, into which one or more smooth pipes protrude from above and open freely in the lower end facing the corrugated pipe closure .
  • the intermediate carrier medium is fed in a closed circuit on the primary side of a heat pump to be arranged outside of the ground and then removed from the intermediate carrier medium in the heat pump.
  • the use of the outer tube or tubes as corrugated tubes brings about an improvement in the efficiency of the heat transfer due to the enlarged surface of the corrugated tube compared to a smooth tube.
  • Another advantage of the corrugated pipe is the high seismic load capacity. During the operation of the heat probe, geological earth movements can therefore be absorbed by the flexibility of the corrugated pipe.
  • the corrugated pipe Compared to the known geothermal probes, in which pipes of a certain length are only connected to one another by connecting sleeves at the drilling point, the corrugated pipe also has the advantage that no leaks can occur at connecting points and, moreover, it is not necessary to subject the connecting points to a pressure test.
  • the corrugated tube or tubes are integrally formed over the entire length of the probe.
  • the entire length of the corrugated pipe - similar to a cable laying - can be unwound from the assembly point by a wooden reel and inserted into the borehole without additional work.
  • the device for extracting ground heat i.e. the geothermal probe
  • the geothermal probe consists of two concentric pipes
  • the area of the device designed to come into contact with the groundwater and / or moist soil has an inner pipe which extends into a pipe this enclosing outer tube is inserted freely suspended and opens in the lower area, and the outer corrugated tube is closed at its end facing away from the heat pump.
  • the outer corrugated tube expediently consists of a highly conductive material, for example metal, while the inner tube in relation to the outer tube consists of poorly thermally conductive material, for example plastic.
  • a suitable stainless steel can be used as the metal, and polyethylene is suitable as the plastic.
  • the intermediate carrier medium is guided downwards in the inner tube, enters the outer tube at the lower end and then flows upwards along the heat-conducting wall of the outer tube, the intermediate carrier medium previously cooled in the heat exchanger then the temperature of the groundwater or of the soil surrounding the outer tube assumes.
  • the last-mentioned embodiment has the particular advantage that the arrangement to be introduced into the soil can have a relatively small outside diameter and can therefore be introduced deep (up to 100 m and more) into the soil by means of a drilling device usually provided for a test borehole.
  • a mixture of water and food-friendly ethyl glycol is preferably suitable as the intermediate carrier medium. This ensures that no soil contamination can occur even if there are leaks in the circuit of the heat exchanger.
  • corrugated pipes are advantageously used for the outer pipe or pipes. These corrugated pipes can be made as desired if they only meet the requirements placed on an earth probe according to the invention. Especially for cases in which, in addition to good heat conduction to the groundwater and / or soil, a one-piece construction of the geothermal probe is required over the entire length, it has proven to be particularly expedient if the metallic corrugated pipe (s) consists of a longitudinally shaped pipe the edges tightly welded and then corrugated metal band thin wall thickness.
  • Wall thicknesses of a corrugated tube of 0.2 to 1.2 mm, preferably 0.4 to 0.8 mm, should be used as thin in the sense of this definition. If, as is also provided in a further development of the invention, the corrugation of the thin-walled outer tube or tubes is chosen so that the corrugation is helical, then there is a further advantage that the z. B. in two concentric tubes in the annular space between the inner smooth plastic tube and the outer corrugated metal tube brine, such as ethylene glycol L, is placed in turbulence, which leads to a highly uniform heat transfer.
  • brine such as ethylene glycol L
  • the heat absorption area is considerably enlarged ( ⁇ 1.5: 1.0), due to the small wall thickness of the outer corrugated pipe the thermal resistance is greatly reduced, but at the same time the Wellfom provides the mechanical stability necessary for the probe.
  • geothermal probes designed as corrugated tubes can be transported and rolled up on drums or coils in practically any length the required final lengths can be cut to size, for example only at the assembly site.
  • the corrugated tube earth probes can easily follow earth displacements without being subjected to mechanical stress that could destroy the probe.
  • the inner smooth tube hanging freely, ie without spacing elements, is suspended in the outer corrugated tube.
  • the corrugated tube can expediently consist of alloyed stainless steel. This also contributes to a favorable heat transfer. If the corrugated pipe comes into contact with outer brines or with groundwater enriched with copper, carbonic acid or the like in the deep area, galvanic currents due to element formation can be measured. The galvanic voltage is compensated by a potential equalization device with sacrificial anode, which is assigned to the corrugated tube according to a further inventive concept. This enables a lifespan of several decades to be achieved.
  • the invention is explained in more detail below with reference to the embodiment shown in the drawing.
  • the figure shows a schematic representation of the area formed for contact with the groundwater and / or moist soil of the heat exchanger in its intended position in a hole in the soil and a block diagram of a heat pump and a heating circuit of a building.
  • a groundwater-bearing layer 4 is present in the soil 1 below the topsoil 2 and a layer of sand 3.
  • a bore 5 is made in this soil.
  • a heat exchanger, designated as a whole by 6, has a region 7 which is provided for insertion into the bore.
  • the area 7 has a freely suspended inner tube 8, to which an intermediate carrier medium can be fed by a circulation pump 9a in the direction of the arrow A.
  • the intermediate carrier occurs at the lower end 9b, which is preferably made of plastic standing smooth inner tube and flows in one.
  • actual heat exchanger forming and formed as a corrugated tube 10 in the direction of arrow B upwards.
  • the corrugated tube 10 is formed in one piece over its entire length and consists of alloyed stainless steel.
  • the wave form of the corrugated tube has a design corresponding to a cord thread or a helical corrugation.
  • the heat exchanger is otherwise connected to the primary side 16 of a heat pump, designated overall by 9, the secondary side 15 of which can be connected to a heating circuit 13 of a building via lines 11 and 12.
  • a pressure compensation vessel is designated by 14.
  • a potential equalization device (not shown) with a sacrificial anode is assigned to the corrugated tube. The function is such that the heat contained in the moist soil or groundwater passes in the corrugated area of the outer tube 10 which forms the actual heat exchanger to the intermediate carrier medium and is removed from the intermediate carrier medium in the heat pump 9.
  • a possible embodiment of the earth probe consists, for example, of a corrugated outer tube 10 with a maximum outer diameter of 45 mm and a minimum inner diameter of 39 mm.
  • the wall thickness of the corrugated pipe made of stainless steel is 0.75 mm, the length of the corrugated pipe that is introduced into the ground is 50 m.
  • the inner tube 8, for. B. made of polyethylene, is a smooth tube, it can z. B. have an outer diameter of 25 mm and an inner diameter of 19.6 mm.
  • the minimum annular gap between smooth tube 8 and corrugated tube 10 is then approximately 7.10 -4 m 2 , the average annular gap 9-10 -4 m 2 .
  • two concentric tubes can be made so that a steel band is formed into a tube around an inner smooth plastic tube, welded at the edges and then corrugated. But you can also proceed so that the plastic tube is inserted into a finished corrugated tube. It is essential in any case that one-piece geothermal probes of 50, 100, 200 m or more can be produced in this way, the plastic tube arranged freely suspended inside stabilizing its position during operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Chemical & Material Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)

Abstract

La recuperation s'effectue au moyen d'une sonde composee de tuyaux concentriques. Elle est constituee d'un tuyau interieur lisse (8) qui debouche librement dans un tuyau (10) a paroi ondulee et fermee a son extremite inferieure.
PCT/DE1981/000060 1980-04-19 1981-04-18 Dispositif pour recuperer la chaleur des eaux souterraines et/ou de la terre attenante aux eaux souterraines WO1981003061A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BR8108443A BR8108443A (pt) 1980-04-19 1981-04-18 Instalacao para a retirada de calor do solo a partir da agua subterranea e/ou da regiao terrestre que envolve a agua subterranea e/ou da regiao terrestre que envolve a agua subterranea
AT0902881A AT380099B (de) 1980-04-19 1981-04-18 Vorrichtung zur entnahme von bodenwaerme aus dem grundwasser und/oder dem das grundwasser umgebenden erdreich
NL8120120A NL8120120A (en) 1980-04-19 1981-04-18 Circular shower head assembly - has annular water distribution channel with outlets designed to prevent prolonged dripping on turning off
AU71529/81A AU7152981A (en) 1980-04-19 1981-04-18 Device for recovering heat from underground water and/or fromsoil adjoining the underground water
DK450981A DK450981A (da) 1980-04-19 1981-10-12 Apparat til udtagelse af jordvarme fra grundvand og eller det grundvandet omgivende jordomraade
FI813491A FI813491L (fi) 1980-04-19 1981-11-05 Anordning foer uttagning av jordvaerme ur grundvattnet och/eller grundvattnet omgivande jordgrund

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19803015172 DE3015172A1 (de) 1980-04-19 1980-04-19 Vorrichtung zur entnahme von bodenwaerme
DE3015172 1980-04-19
DE3047397A DE3047397C2 (de) 1980-12-16 1980-12-16 Vorrichtung zur Entnahme von Bodenwärme

Publications (1)

Publication Number Publication Date
WO1981003061A1 true WO1981003061A1 (fr) 1981-10-29

Family

ID=25785059

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1981/000060 WO1981003061A1 (fr) 1980-04-19 1981-04-18 Dispositif pour recuperer la chaleur des eaux souterraines et/ou de la terre attenante aux eaux souterraines

Country Status (11)

Country Link
EP (1) EP0056806A1 (fr)
JP (1) JPS57500570A (fr)
AT (1) AT380099B (fr)
AU (1) AU7152981A (fr)
BR (1) BR8108443A (fr)
CH (1) CH655380A5 (fr)
DK (1) DK450981A (fr)
FI (1) FI813491L (fr)
GB (1) GB2086564B (fr)
NL (1) NL8120120A (fr)
WO (1) WO1981003061A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000124A1 (fr) * 1984-06-14 1986-01-03 Total Energy Conservation & Management Company Lim Ameliorations a des systemes d'extraction de la chaleur terrestre
ITPD20110237A1 (it) * 2011-07-13 2013-01-14 Termo Therm Srl Sonda geotermica
US20130283839A1 (en) * 2010-11-04 2013-10-31 Geoenergy Enterprises, Llc Geothermal system
US20130333859A1 (en) * 2010-11-04 2013-12-19 Geoenergy Enterprises, Llc Geothermal column
US8678040B2 (en) 2011-08-16 2014-03-25 Red Leaf Resources, Inc Vertically compactable fluid transfer device
EP3165848A1 (fr) * 2015-11-09 2017-05-10 Wojciech Struzik Dispositif d'obtention de chaleur à partir d'eau souterraine pour conditionement d'air et aération

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4369635A (en) * 1979-06-25 1983-01-25 Ladek Corporation Subterranean heating and cooling system
DE3801933A1 (de) * 1988-01-23 1989-08-03 Georg Knochel Verfahren zur aufnahme von erdwaerme durch stroemendes wasser
GB2434200A (en) * 2006-01-14 2007-07-18 Roxbury Ltd Heat exchanger component for a geothermal system

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2246418A (en) * 1938-03-14 1941-06-17 Union Oil Co Art of well drilling
US3648767A (en) * 1967-07-26 1972-03-14 Thermo Dynamics Inc Temperature control tube
DE2418182A1 (de) * 1974-04-13 1975-10-23 Philipp Rauth Erdmax
FR2357721A1 (fr) * 1976-07-09 1978-02-03 Vignal Maurice Procede de preparation d'un trou fore dans le sol pour constituer un echangeur geothermique pour les installations de chauffage
DE2751530A1 (de) * 1977-11-18 1979-05-23 Kabel Metallwerke Ghh Verfahren und vorrichtung zur erzeugung elektrischer energie
US4164257A (en) * 1977-12-15 1979-08-14 Atlantic Richfield Company Internal protection of well casing
GB2016139A (en) * 1977-09-30 1979-09-19 Kyoto Central Co Ltd Apparatus and method for using terrestial heat
LU81670A1 (de) * 1979-09-10 1980-01-24 Feist Artus Verfahren zur erdwaermegewinnung und vorrichtung zur durchfuehrung dieses verfahrens
DE2850865A1 (de) * 1978-11-24 1980-06-04 Otto Lehmann Anordnung von waermetauschrohren fuer den primaerkreislauf einer waermepumpe
DE2928414A1 (de) * 1979-07-12 1981-01-29 Andreas Dipl Phys Dr Ing Hampe Waermeaustauscher fuer erdwaermenutzung

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2246418A (en) * 1938-03-14 1941-06-17 Union Oil Co Art of well drilling
US3648767A (en) * 1967-07-26 1972-03-14 Thermo Dynamics Inc Temperature control tube
DE2418182A1 (de) * 1974-04-13 1975-10-23 Philipp Rauth Erdmax
FR2357721A1 (fr) * 1976-07-09 1978-02-03 Vignal Maurice Procede de preparation d'un trou fore dans le sol pour constituer un echangeur geothermique pour les installations de chauffage
GB2016139A (en) * 1977-09-30 1979-09-19 Kyoto Central Co Ltd Apparatus and method for using terrestial heat
DE2751530A1 (de) * 1977-11-18 1979-05-23 Kabel Metallwerke Ghh Verfahren und vorrichtung zur erzeugung elektrischer energie
US4164257A (en) * 1977-12-15 1979-08-14 Atlantic Richfield Company Internal protection of well casing
DE2850865A1 (de) * 1978-11-24 1980-06-04 Otto Lehmann Anordnung von waermetauschrohren fuer den primaerkreislauf einer waermepumpe
DE2928414A1 (de) * 1979-07-12 1981-01-29 Andreas Dipl Phys Dr Ing Hampe Waermeaustauscher fuer erdwaermenutzung
LU81670A1 (de) * 1979-09-10 1980-01-24 Feist Artus Verfahren zur erdwaermegewinnung und vorrichtung zur durchfuehrung dieses verfahrens

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000124A1 (fr) * 1984-06-14 1986-01-03 Total Energy Conservation & Management Company Lim Ameliorations a des systemes d'extraction de la chaleur terrestre
US20130283839A1 (en) * 2010-11-04 2013-10-31 Geoenergy Enterprises, Llc Geothermal system
US20130333859A1 (en) * 2010-11-04 2013-12-19 Geoenergy Enterprises, Llc Geothermal column
ITPD20110237A1 (it) * 2011-07-13 2013-01-14 Termo Therm Srl Sonda geotermica
US8678040B2 (en) 2011-08-16 2014-03-25 Red Leaf Resources, Inc Vertically compactable fluid transfer device
EP3165848A1 (fr) * 2015-11-09 2017-05-10 Wojciech Struzik Dispositif d'obtention de chaleur à partir d'eau souterraine pour conditionement d'air et aération

Also Published As

Publication number Publication date
DK450981A (da) 1981-10-29
AT380099B (de) 1986-04-10
FI813491L (fi) 1981-11-05
BR8108443A (pt) 1982-03-09
GB2086564A (en) 1982-05-12
EP0056806A1 (fr) 1982-08-04
ATA902881A (de) 1985-08-15
CH655380A5 (de) 1986-04-15
NL8120120A (en) 1982-08-02
AU7152981A (en) 1981-11-10
JPS57500570A (fr) 1982-04-01
GB2086564B (en) 1984-05-02

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