EP2510301A2 - Procédé de pose d'un échangeur de chaleur au sol et fondation construite selon ce procédé - Google Patents

Procédé de pose d'un échangeur de chaleur au sol et fondation construite selon ce procédé

Info

Publication number
EP2510301A2
EP2510301A2 EP10812961A EP10812961A EP2510301A2 EP 2510301 A2 EP2510301 A2 EP 2510301A2 EP 10812961 A EP10812961 A EP 10812961A EP 10812961 A EP10812961 A EP 10812961A EP 2510301 A2 EP2510301 A2 EP 2510301A2
Authority
EP
European Patent Office
Prior art keywords
vessel
backfill
heat exchanger
ground heat
liquid
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.)
Withdrawn
Application number
EP10812961A
Other languages
German (de)
English (en)
Inventor
Wieslaw Matusiak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of EP2510301A2 publication Critical patent/EP2510301A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0052—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using the ground body or aquifers as heat storage medium
    • 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
    • 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
    • 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
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • This invention relates to the way of setting of a ground heat exchanger and a foundation built in this way.
  • a building air conditioning system is also known from an American patent description US 6,293,120, which includes an underground pipe buried into the base soil in order to transmit geothermal energy from the ground to the air, to control air humidity and to clean the said air. It also includes a cobble stone layer placed under the floor of a building, which makes it possible for the air to be introduced into the pipe, and a device for supplying air to the aforementioned cobble stone layer.
  • a construction of a heat exchanger is known from an American patent description US 4,546,826, according to which the structure comprises a vessel which contains concentric sheet metal spirals defining two liquid flow channels between which heat exchange is effected. At both ends the vessel is closed with flat closure plates that have openings and is equipped with an internal shell surrounding the spiral.
  • One of the closure plates has a radially outer circumferential edge surrounded by the first axially oriented opening, whereas the other closure plate has a radially inner circumferential edge which surrounds the second axially oriented opening, whereby the first opening communicates with the outer part and the second axially oriented opening communicates with the inner part of the first flow channel.
  • the American patent application US 20070137236 describes a construction of a ground heat exchanger utilizing geothermal energy, which comprises pipe conduits and channels mounted within a support structure. A layer of air-permeable materials is formed on the soil horizontally or at a small inclination angle, thus creating a circulation channel of the exchanger. The channel is confined by a support slab with spacer elements coupled with a construction net seated on a stabilizing net. This exchanger is equipped with an air collector.
  • An American patent description US 5,937,934 presents a construction of a ground heat exchanger which includes a thermo-insulated flow duct arranged in a borehole formed in ground, equipped at its end with a pump with a shroud pipe, and a return flow region for return water located radially outwardly around the shroud pipe which includes return flow pipes and a porous filling.
  • a ground heat exchanger known from the Polish patent application P-387406 takes the form of a tin box with inner metal radiators in the form of plates, preferably with surface development equipped with an inlet and an outlet, whereby the box is surrounded by a concrete jacket which houses perforated humidifying conduits.
  • At the bottom of the box there is a slightly axially inclined drainage channel connected to a drain pipe finished off with a drain trap.
  • the ceramic plate can be either monolithic or it can constitute a metal plate coated on both sides with ceramic tiles.
  • the box and the radiators are made of aluminium sheet.
  • the concrete jacket of a ground heat exchanger is connected to concrete piles, seated, preferably on a foundation slab, at such a depth that their bottom part is located below the level of underground waters.
  • the exchanger is usually installed at a depth of approximately 1.5 m.
  • ground heat exchangers and the ways of the setting thereof were characterised by a relatively slow energy exchange, while their efficiency was restricted due to the thermal properties of the materials used for the setting thereof.
  • an impermeable vessel in which a ground heat exchanger is placed at a small inclination angle in the direction of the outlet, and next the vessel is filled with a liquid and a granular backfill, preferably in granulation of a grain diameter of up to 50 mm, which ensures a free flow of the liquid and which makes it possible to carry loads for the installation of vessels underneath floorings in buildings, underneath car parks and roads.
  • the gravel backfill is covered with film on which a layer of sand and the foundation of the flooring are placed.
  • an end of the water supply system is placed along with a submersible pump, which enables constant refilling or emptying the vessel, and a device which creates a possibility of the relocation of liquid within the bed of the gravel backfill from the outlet to the inlet of the surroundings of the exchanger in order to accelerate the exchange of temperature and to counteract the freezing of elements of a ground heat exchanger, especially in the period of freezing weather.
  • the bed of the vessel can be extended from the side of the exchanger's inlet.
  • the simplest method to make an impermeable vessel involves placing a film secured with geotextile fabric in an excavation previously made in virgin soil, especially covered with a base layer of sand, preferably 8-12 cm thick.
  • the backfill of the vessel is composed of gravel, shale, stone, sand.
  • the foundation for setting of a ground heat exchanger includes an impermeable vessel made in an excavation in the ground in which a ground heat exchanger is placed at a small inclination angle in the direction of the outlet, and its filling in the form of a liquid and backfill, preferably having a grain diameter of up to 50 mm, which ensures a free flow of the liquid and which makes it possible to carry loads for the installation of vessels underneath floorings in buildings, underneath car parks and roads.
  • the backfill is covered with film on which a layer of sand and the foundation of the flooring are placed.
  • an end of the water supply system is placed along with a submersible pump, which enables constant refilling or emptying the vessel, and a device which creates a possibility of the relocation of liquid within the bed of the backfill from the outlet to the inlet of the surroundings of the exchanger in order to accelerate the exchange of temperature and to counteract the freezing of elements of a ground heat exchanger, especially in the period of freezing weather.
  • the bed of the vessel can be extended from the side of the exchanger's inlet.
  • An impermeable vessel can be made of a film laid on geotextile fabric in an excavation previously made in virgin soil, covered with a base layer of sand, preferably 8-12 cm thick.
  • the way of setting of a ground heat exchanger and building the foundation according to the invention make it possible to increase the thermal efficiency of the exchanger, to provide a more effective utilization of geothermal energy, as well as to prevent the freezing of the exchanger's elements even in conditions of severe frost.
  • FIG. 1 An example of building a foundation according to the invention for setting of a ground heat exchanger is illustrated on the attached drawing which presents a cross-sectional view of the foundation with a ground heat exchanger installed within.
  • the foundation for setting of a ground heat exchanger built using the way in accordance with the invention involves an impermeable vessel 1 made of film sheets made of polyvinyl chloride which is 1 mm thick.
  • the vessel 1 is placed on a layer of protective geotextile fabric and on a base layer of sand 2 of the thickness of 8-12 cm in an excavation done in the virgin soil 3.
  • a ground heat exchanger 4 is placed, mounted at a small inclination angle in the direction of the outlet, while the remaining volume of the vessel 1 is filled with a gravel backfill 5 of a grain diameter of at least 10-12 mm and water.
  • the backfill 5 underneath the pipes of a ground heat exchanger 4 is 12- 15 cm thick, while the thickness of the backfill 5 covering the pipes of a ground heat exchanger 4 amounts to 25-30 cm.
  • the backfill 5 is covered with film 6 made of polyvinyl chloride which is 0.5 mm thick, on which an external layer of sand 7, approximately 10 cm thick is laid, as well as the foundation of the flooring.
  • the vessel 1 is equipped with a supply 8 of feed water and a pump 9 for emptying the vessel 1, as well as a pump 10 for forcing water through the bed of the backfill 5 from the outlet to the inlet of the surroundings of a ground heat exchanger 4.
  • the vessel 1, as well as the bed of the backfill 5 and water which fill it, are extended to the outside from the side of the inlet of a ground heat exchanger 4 by approximately 2 m beyond the outline of its terminal pipe.

Landscapes

  • 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)
  • Road Paving Structures (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

La présente invention concerne le procédé de pose d'un échangeur de chaleur au sol et une fondation construite selon ce procédé. Selon le procédé, dans le sol vierge (3), une cuve imperméable (1) est préparée, dans laquelle un échangeur de chaleur au sol (4) est placé à un faible angle d'inclinaison dans la direction de la sortie, puis la cuve (1) est remplie d'un liquide et de remblayage (5), de préférence ayant un diamètre de grain allant jusqu'à 50 mm, après quoi le remblayage (5) est couvert d'un film (6), sur lequel, de préférence, une couche de sable et la fondation du revêtement de sol sont posées. La fondation comporte une cuve imperméable (1) placée sur une couche de base de sable (2) dans le sol vierge (3), qui loge un échangeur de chaleur au sol (4) monté à un petit angle d'inclinaison dans la direction de la sortie, la cuve (1) étant remplie d'un liquide et d'un remblayage granulaire (5) ayant un diamètre de grain allant jusqu'à 50 mm, tandis que le remblayage (5) est couvert d'un film (6), sur lequel une couche de sable (7) et la fondation du revêtement du sol sont placées.
EP10812961A 2009-12-09 2010-12-06 Procédé de pose d'un échangeur de chaleur au sol et fondation construite selon ce procédé Withdrawn EP2510301A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL389842A PL389842A1 (pl) 2009-12-09 2009-12-09 Sposób posadowienia gruntowego wymiennika ciepła oraz fundament wykonany tym sposobem
PCT/PL2010/050062 WO2011071399A2 (fr) 2009-12-09 2010-12-06 Procédé de pose d'un échangeur de chaleur au sol et fondation construite selon ce procédé

Publications (1)

Publication Number Publication Date
EP2510301A2 true EP2510301A2 (fr) 2012-10-17

Family

ID=44146091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10812961A Withdrawn EP2510301A2 (fr) 2009-12-09 2010-12-06 Procédé de pose d'un échangeur de chaleur au sol et fondation construite selon ce procédé

Country Status (3)

Country Link
EP (1) EP2510301A2 (fr)
PL (1) PL389842A1 (fr)
WO (1) WO2011071399A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201617639D0 (en) * 2016-10-18 2016-11-30 Hydro Water Management Solutions Ltd Thermal transfer system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3404374A1 (de) 1984-02-08 1985-08-14 W. Schmidt GmbH & Co KG, 7518 Bretten Spiralwaermetauscher
US5730208A (en) * 1995-03-09 1998-03-24 Barban; Reno L. Biothermal and geothermal heat exchange apparatus for a ground source heat pump
US5937934A (en) 1996-11-15 1999-08-17 Geohil Ag Soil heat exchanger
JP3091195B1 (ja) 1999-10-18 2000-09-25 株式会社東光工業 地熱利用空調システム
DE20303484U1 (de) * 2003-03-05 2004-07-15 Elwa Wassertechnik Gmbh Vorrichtung zur Nutzung von Erdwärme
US6810945B1 (en) 2003-04-29 2004-11-02 Mat Boissevain Conditioning the air in a structure utilizing a gravel heat exchanger underneath the slab
DE10342920B3 (de) * 2003-09-15 2004-09-30 Germaat Polymer Gmbh Kollektor zur Nutzung der Erdtemperatur für Heiz- oder Kühlprozesse
US20060249276A1 (en) * 2005-05-05 2006-11-09 Spadafora Paul F Enriched high conductivity geothermal fill and method for installation
DE102005049930A1 (de) * 2005-10-19 2007-04-26 Stefan Büschkes Einrichtung zur Gewinnung von Wärme durch wiedergewinnbare Energie
EP1798509B1 (fr) 2005-12-14 2016-08-24 Krzysztof Cwik Pro-Vent Systemy Wentylacyjne Echangeur de chaleur souterrain
PL214956B1 (pl) 2009-03-05 2013-10-31 Wieslaw Matusiak Gruntowy wymiennik ciepła

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011071399A2 *

Also Published As

Publication number Publication date
PL389842A1 (pl) 2011-06-20
WO2011071399A2 (fr) 2011-06-16
WO2011071399A3 (fr) 2011-11-24

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