WO2013127723A2 - Réservoir thermique relié au sol - Google Patents

Réservoir thermique relié au sol Download PDF

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Publication number
WO2013127723A2
WO2013127723A2 PCT/EP2013/053673 EP2013053673W WO2013127723A2 WO 2013127723 A2 WO2013127723 A2 WO 2013127723A2 EP 2013053673 W EP2013053673 W EP 2013053673W WO 2013127723 A2 WO2013127723 A2 WO 2013127723A2
Authority
WO
WIPO (PCT)
Prior art keywords
wall
heat
floor
wall segments
heat storage
Prior art date
Application number
PCT/EP2013/053673
Other languages
German (de)
English (en)
Other versions
WO2013127723A3 (fr
Inventor
Rüdiger Schenke
Original Assignee
Visionic Solar GmbH & Co. KG
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 Visionic Solar GmbH & Co. KG filed Critical Visionic Solar GmbH & Co. KG
Publication of WO2013127723A2 publication Critical patent/WO2013127723A2/fr
Publication of WO2013127723A3 publication Critical patent/WO2013127723A3/fr

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
    • F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
    • 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
    • F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
    • F28D20/0043—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material specially adapted for long-term heat storage; Underground tanks; Floating reservoirs; Pools; Ponds
    • 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

  • the present invention relates to a ground-based
  • Heat storage in particular buffer heat storage.
  • Heat as the simplest form of usable energy is involved in a whole series of processes, for example in solar thermal energy, in
  • Biogas plants but also conventionally as waste heat from combustion and other power plants, such as combined heat and power plants and the like.
  • Many photovoltaic modules are equipped with cooling devices for
  • thermochemical heat stores containing silica gel granules and where the heat supplied is used for endothermic reactions. Exothermic back reactions then give the stored energy much later
  • Buffer heat accumulators have long been known in heating systems; for the described purpose, however, these must be considerably larger.
  • Known buffer heat storage are therefore not in buildings but on the surrounding land arranged, often as ground-based storage, especially as Erd Grande.
  • Inner layer should meet only sealing purposes and are designed accordingly thin, they are made of PU rigid foam boards.
  • heat-insulating inner layer is formed from preformed PU hard foam blocks with internal cavities. Over all butt joints of the inner and outer layer a bitumen seal is provided. Outside the underground tank pipes are provided in the ground, which should absorb the geothermal energy outside the tank. This tank can be transported disassembled and set up on site. From FR 2 566 883 another earth-bound heat storage is known, which is covered by a layer of soil of 0.7 to 1, 0 m thickness and has a volume of more than 120 m 3 . This tank has a thin, watertight, flexible inner envelope made of PE film, which is followed by a thermal insulation material in the form of rigid PU plates on the outside of the tank.
  • This tank should be filled with wet sand, he has a Nachfeuchtungsvorraum.
  • a disadvantage of this tank is its low stability.
  • the invention has the object to provide a modular Erdtank that avoids the disadvantages of the prior art.
  • a ground-based heat storage having a bottom surface, a top surface and a wall surface, wherein at least the wall surface a plurality of individual
  • the invention includes a heat storage, which is arranged under conditions of use in whole or for the most part in the ground.
  • a heat storage which is arranged entirely under a base plate, a hall floor, a layer of earth or the like.
  • heat storage which are arranged only partially in the ground.
  • Solid filling is understood to mean any kind of bulk material such as sand, granulated gravel, but in particular that soil which is excavated at the place of installation of the
  • Wall, floor and top surfaces may have any geometry, but preferred are cylindrical memory.
  • the invention proposes with great advantage that one or more wall segments each have at least one heat exchanger, so they are also provided on the side walls of the heat accumulator.
  • each, every second or every third wall element may have its own heat exchanger, a conceivable one is also conceivable
  • more than one heat exchanger can also be arranged, also per main surface of the wall segment.
  • the wall segments have no supporting function and an independent of the wall segments support body is provided, in particular as
  • Barrel support body is formed.
  • a support body releases the wall segments according to the invention as much as possible from having to assume static functions, so that they can be correspondingly small in size or optimized in their material for thermal insulation properties.
  • a support body releases the wall segments according to the invention as much as possible from having to assume static functions, so that they can be correspondingly small in size or optimized in their material for thermal insulation properties.
  • Area support bodies such as concrete walls or concrete segments of the support body according to the invention should preferably be a framework support body, and as rods in particular round or rectangular concrete rods
  • the support body according to the invention must absorb virtually no horizontal compressive forces, since the
  • Wall segments have arranged such heat exchangers, there is a high security against heat loss.
  • heat exchangers can primarily be used to cool the heat transfer medium circulating in the system in which the heat accumulator is usually integrated, in which the heat is not supplied to the reservoir but to the surrounding soil.
  • heat exchangers outside the memory according to the invention, as in the following
  • the wall segments are made of a plastic, in particular a temperature-resistant plastic, such as a polystyrene.
  • plastics are relatively soft, so that their use as a wall material of a
  • the invention proposes, in particular, to use a foamed polystyrene, in particular a Styrodur from BASF AG, very preferably a high-temperature Styrodur.
  • a foamed polystyrene in particular a Styrodur from BASF AG, very preferably a high-temperature Styrodur.
  • generally usable plastics should have a thermal conductivity of 0.03 to 0.04 W / (m K) and have application temperatures above 80 ° C.
  • the invention is further provided that the
  • Wall segments have no further sheet-like material layer on the plastic, in particular no sealing layer and / or no protective layer against mechanical stress.
  • the storage medium solid is mechanically loading the storage wall. This load can be during filling and at
  • heat storage wall must be thermally insulating but not absolutely tight against mass transfer. In this way, the design complexity of the container wall can be reduced, since a tightness layer can be omitted. Is also dispensed with a resistive layer, the
  • Wall elements particularly simple and inexpensive to manufacture.
  • the low probability is accepted that a wall element is superficially damaged.
  • this does not affect the functionality of the heat accumulator, which is modular according to the invention constructed both in terms of the wall elements and the existing heat exchanger.
  • the wall segments on the memory inside and / or on to surround the store outside with a fleece is initially neither fluid-tight nor mechanically resistant, but stored in case of leakage quickly Erdkrümel in the non-woven matrix, so that quickly held by the nonwoven material and
  • the wall segments are formed adjacent to one another, they form a closed, heat-insulating container wall. In this case, they have connecting portions to each other, for example
  • the support body is preferably arranged on the main side of the wall elements facing away from the tank, for example also in the
  • the invention proposes that the wall segments are formed spaced apart from each other. In this case, in the
  • Interspersed rods of the support body can be arranged. These should then also be thermally insulated according to the invention, so that there are no thermal bridges through the storage wall. Spaced apart, the invention means both the spacing of each wall segment from its neighbors and the spacing of a group of interconnected wall segments to the two adjacent groups of interconnected wall segments or to adjacent individual wall segments.
  • the joints between two wall segments or between wall segments and concrete bars are thermally insulated, in particular by means of PU foam. This prevents with great advantage associated with a heat transfer heating the ground air near the tank, which otherwise rise to the ground surface and would be replaced there against cold outside air.
  • the heat accumulator has an access shaft accessible from the outside and / or an externally accessible terminal compartment. This allows
  • the terminal compartment according to the invention contains all the connections of the individual heat exchangers and can have corresponding pumps or other electrical connections as well.
  • a wall segment has a reversibly closable receiving pocket in which the ends of the
  • Heat exchanger of a wall segment are added, in particular in a transport state of the wall segment.
  • the invention is in a preferred embodiment below
  • FIG. 1 shows a schematic sectional view through an embodiment along the line A-A of FIG. 2,
  • Fig. 3 an exploded view of the embodiment
  • FIG. 4 shows an exploded view of a wall element of FIG.
  • FIG. 1 shows a schematic sectional view through a
  • the diameter of this embodiment is about six meters, the height about three meters. Below the
  • Heat storage 1 an external heat exchanger 13 is shown in the form of a pipe helix. Above this pipe spiral
  • the wall segments 14 are made of the same material as the wall segments 5. They are arranged on a horizontally oriented sand layer, which in turn can be arranged on a gravel bed or the like. They are more or less loosely placed next to each other, but may also be formed interconnected, for example, by an adhesive layer on the butt joints or by a circumferential
  • the thickness of the bottom plates 14 may be, for example, 200 mm, with larger or smaller thicknesses according to the invention.
  • On the directed to the tank inner side main surface of the bottom plates 14 is directly or by a thinner Solids layer separated a second heat exchanger 15 also arranged in the form of a pipe spiral.
  • Inventive heat accumulator 1 is a formed from chess rings 16 central shaft 17 is set up, which is completed in the direction of the bottom side of the heat accumulator 1 according to the invention and is filled with water under operating conditions.
  • 16 metallic, outwardly into the storage room interior facing toothed discs 18 are provided between the individual manholes, which better heat conduction from the water-filled shaft 17 in the
  • the water-filled shaft 17 is used for easier heat transfer from circulating in the system
  • the completion of the shaft 17 forms a terminating segment 19, on which a box-shaped cover 20 is arranged.
  • the end segment 19 has a collar 31, which serves as an enlarged contact surface for the cover 20.
  • Within the cover 20 according to the invention are pumps,
  • Pipe connections, temperature sensors, etc. arranged accessible from the outside. Access is via a shaft opening. This is closed to the outside with a steel plate 34, memory inward follows one
  • the storage interior is filled with a solid, not shown, for example, the excavation of the installation site.
  • the excavation is filled after laying the tube coil 15 in the storage interior to about the height of the upper edge of the end segment 19, on this Filling is a third heat exchanger 21 also in the form of a
  • profile webs 22 extend from the wall segments 5 radially inwardly to the cover 20 in which they end. These profile webs 22 lead pipes from the heat exchangers 6 of the wall segments 5. Above this
  • Profile webs 22 is an insulating layer of cover plates 23 is provided, which in turn are covered at the top by a concrete ceiling 10.
  • a concrete ceiling 10 In this concrete ceiling 10 is as described a central access to the lid 20 is released.
  • the concrete ceiling 10 is part of the support body. It is supported by vertically extending concrete webs 24 on the grown floor of the heat storage installation site. The vertically extending
  • Concrete webs 24 carry the load of the concrete pavement 10 and the earth layer provided above. They relieve the wall segments 5
  • Fig. 2 shows a partially sectioned plan view of the embodiment. Evident is the concrete ceiling 10 and the released central
  • Access shaft 8 or cover 20.
  • wall segments 5 are shown, which have a mounting location accessible from above receiving pocket 1 1. Good to see is also of the receiving pocket 1 1 radially inwardly facing profile web 22, the one or more pipes of the or
  • Heat exchanger elements 6 of the wall segment 5 leads. Between two adjacent wall segments 5, a concrete web 24 can be seen, which is on the inside of the storage of a thermal insulation material 25 as a formwork over the entire area surrounded so that no thermal bridges are formed by the memory inside to the outside. Not shown but according to the invention is also one on the outside of the tank arranged joint seal between concrete web 24 and wall segments 5. This is, for example, designed as embedded in PU foam fleece that zuschlämmt during operation and so completely seals.
  • Fig. 3 shows an exploded view of the embodiment, on which the constructions of the heat accumulator 1 according to the invention can be seen particularly well.
  • the first heat exchanger 13 can be seen, located below the bottom surface 2, formed from
  • a second heat exchanger 15 is located above in the interior of the storage tank.
  • the central shaft 17, which is formed by individual shaft rings 16, is located.
  • the bottom-side segment 16 has a concrete floor, so that water contained in the shaft 17 can not easily escape into the filled with soil memory inside.
  • Good to see are still the wall segments 5, which are arranged here in the form of a cylinder wall.
  • the heat accumulator could also image any other geometric body such as cuboid, cube or the like, but cylindrical shapes are preferred.
  • Each wall segment 5 is provided with a radially inwardly extending profile web 22. Furthermore, it can be seen that between the spaced apart
  • Wall segments 5 vertically extending concrete webs 24 are provided, which are surrounded by an inner and outer formwork 25, wherein at least the inner formwork 25 also
  • This formwork 25 overlaps the adjacent wall segments 5 in order to avoid thermal bridges at the butt joints.
  • a third heat exchanger 21 is provided in the region of the upper end of the end segment 19, a third heat exchanger 21 is provided.
  • the top surface 3 is again by rectangular
  • FIG. 3 shows, in particular, the static corset of the storage device according to the invention, which is formed by a concrete ceiling 10 and vertically extending concrete webs 24 in the manner of a supporting structure.
  • the concrete ceiling 10 has a collar which is surrounded on its inner side by an insulating ring layer 32 and on whose upper side an insulating cover layer 33 is provided, which in turn is outwardly covered by a steel plate 43.
  • This steel plate 34 is the only visible after installation part of the heat accumulator according to the invention.
  • FIG. 4 shows a wall segment 5 in detail.
  • the wall segment 5 has a base body made of a heat-insulating plastic, in particular Styrodur, and is about 250 mm thick. Depending on the type of plastic and the memory size, other dimensions can be used.
  • Both the inner and the outer main surface have groove-like depressions in which heat exchangers 6 are guided.
  • one heat exchanger 6 is arranged on each main side. According to the invention, such a heat exchanger 6 would also be provided only on the inner or only the outer main side.
  • the groove-like depressions can after lodging the Heat exchanger to be closed with a holding means,
  • this layer is intended to mechanically protect the tubes of the heat exchanger 6 inside the recess.
  • this receiving pocket 1 1 is closed by means of a piece of wood or the like.
  • the illustrated plug 29 of the same material as the wall segment 5 is after its installation in the now free
  • the piece of wood or the like remains in place, only after filling of the memory, the lines are removed from the recess 1 1, so that they are longest possible protected from the harsh influences of a construction site.
  • the inserted into the now almost empty recess 1 1 plug 29 increases the stability and prevents the ingress of bulk material in the wall segment 5 and thus contact with the pipes.
  • Figure 4 shows a side view, from which it can be seen that the ends 12 of the inner and outer heat exchanger 6 end differently high and are guided by a slot 30 to the profile webs 22. Shown is an optional nonwoven layer 35, optionally over one or both
  • Main sides of the wall segment 5 can run and in the
  • the wall segments 5 without own mechanical protective layers designed to keep them as simple as possible. If necessary, however, these may also be present.
  • the heat accumulator according to the invention has the advantage that its wall segments 5 allow optimum heat exchanger distribution and arrangement within the accumulator, so that optimum
  • Heat exchangers the highest possible robustness and steadfastness even with punctual damage. Even if a separately controlled heat exchanger in the wall segment should be damaged, it can be closed immediately by the easy access.
  • the use of moist soil does not necessarily make the reservoir watertight, as there is no free water, and moisture is held by the capillary forces of the earth.
  • heat can be quickly introduced into the packing, if necessary.
  • both the heat of the soil located there can be used as well as in the summer cooling of the circulating water can be effected if the heat capacity of the memory should be fully exhausted.
  • the heat losses, which could occur by creeping the heat are also intercepted by these arranged outside of the memory or on the tank-outgoing main side heat exchanger. Due to the large heat capacity of the Storage, it is possible to store them for a long time, and compensate in winter by appropriate feed on the sunny days at least the heat losses of the memory. Due to the
  • Barrel construction can save concrete and the construction costs and construction times are significantly reduced, a formwork can be omitted.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Building Environments (AREA)

Abstract

L'invention concerne un réservoir thermique (1) relié au sol présentant une surface de base (2), une surface de couverture (3) et une surface de paroi (4), au moins la surface de paroi (4) comprenant une pluralité de segments de paroi individuels (5), au moins un échangeur thermique (6) étant prévu dans le réservoir thermique (1), le réservoir thermique (1) présentant une charge solide dans des conditions de fonctionnement. L'invention vise à mettre en oeuvre un réservoir thermique efficace. A cet effet, un ou plusieurs segments de paroi (5) présentent respectivement au moins un échangeur thermique (6).
PCT/EP2013/053673 2012-02-27 2013-02-25 Réservoir thermique relié au sol WO2013127723A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012101541.4A DE102012101541B4 (de) 2012-02-27 2012-02-27 Bodengebundener Wärmespeicher
DE102012101541.4 2012-02-27

Publications (2)

Publication Number Publication Date
WO2013127723A2 true WO2013127723A2 (fr) 2013-09-06
WO2013127723A3 WO2013127723A3 (fr) 2013-10-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/053673 WO2013127723A2 (fr) 2012-02-27 2013-02-25 Réservoir thermique relié au sol

Country Status (2)

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DE (1) DE102012101541B4 (fr)
WO (1) WO2013127723A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019118223A1 (de) 2019-07-05 2021-01-07 Envola GmbH Vorrichtung zur Energieübertragung und zur Energiespeicherung in einem Flüssigkeitsreservoir
DE102019133712B3 (de) * 2019-12-10 2021-03-11 Envola GmbH Anordnung und Verfahren zur Installation eines wenigstens teilweise in einem Erdreich eingesenkten Energiespeichers
EP4073451B1 (fr) 2019-12-10 2023-10-11 Envola GmbH Ensemble et procédé d'installation d'un accumulateur d'énergie, qui est au moins partiellement enterré dans le sol
DE102019135681B4 (de) * 2019-12-23 2022-01-27 Envola GmbH Energiespeicher

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566883A1 (fr) 1984-06-29 1986-01-03 Doye Jean Richard Dispositif enterre de stockage de calories et procede de construction
DE19806534C1 (de) 1998-02-17 1999-07-15 Ferdinand Henkes Vorrichtung zur Speicherung von Wärmeenergie

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Publication number Priority date Publication date Assignee Title
JPS56501103A (fr) * 1979-08-06 1981-08-06
DE3402438A1 (de) 1984-01-25 1985-07-25 Iris 5000 Köln Laufenberg Verfahren zum speichern von waerme und waermespeicheranlage zu seiner ausfuehrung
DE3545622A1 (de) 1985-12-21 1987-06-25 Aktionsgemeinschaft M U T E V Waermespeicher
NL1007903C2 (nl) 1997-12-24 1999-06-30 Wth Vloerverwarming B V Inrichting voor het opwekken van duurzame energie en werkwijze voor het vormen daarvan.
DE20201535U1 (de) * 2002-02-01 2002-05-08 Kuhn Rolf Heizanlage eines Gebäudes
EP1470372B1 (fr) * 2002-02-01 2010-04-07 Zent-Frenger Holding GmbH Element de mur et de plafond thermoactif
DE202006005592U1 (de) * 2006-04-04 2007-08-16 Schröder, Ulrich Wasserspeicher und Wärmepumpenanlage
DE102007034511A1 (de) * 2007-07-24 2009-01-29 Hydro-Energy Behälter zum Speichern eines wärmespeichernden Mediums
DE102008039010A1 (de) * 2008-08-21 2010-02-25 Gea Air Treatment Gmbh Systemwand

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566883A1 (fr) 1984-06-29 1986-01-03 Doye Jean Richard Dispositif enterre de stockage de calories et procede de construction
DE19806534C1 (de) 1998-02-17 1999-07-15 Ferdinand Henkes Vorrichtung zur Speicherung von Wärmeenergie

Also Published As

Publication number Publication date
DE102012101541B4 (de) 2020-07-09
WO2013127723A3 (fr) 2013-10-24
DE102012101541A1 (de) 2013-08-29

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