WO2001020240A2 - Wärmespeicher - Google Patents
Wärmespeicher Download PDFInfo
- Publication number
- WO2001020240A2 WO2001020240A2 PCT/DE2000/003224 DE0003224W WO0120240A2 WO 2001020240 A2 WO2001020240 A2 WO 2001020240A2 DE 0003224 W DE0003224 W DE 0003224W WO 0120240 A2 WO0120240 A2 WO 0120240A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat
- heat storage
- storage device
- wood
- layer
- Prior art date
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
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
-
- 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
-
- 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 heat accumulator.
- the object of the present invention is to provide something new for commercial use.
- the heat-storing medium is formed with a solid body and the lines are independent of a large number addressable, spaced sections, so as to specifically bring heat into and / or out of certain areas of rubble.
- the internal heat conduction is reduced by the solid body fill, so that the heat storage initially isolates itself. This applies on the one hand if a continuous storage volume with a large number of lines is used; On the other On the other On the other hand, there are also advantages if a multiplicity of, for example, cube-shaped storage cells are used, through which one or more lines each run, in order to build up the total heat storage by means of storage elements that are in particular to be prefabricated.
- the solid bodies are then poured into the storage cells.
- the walls of prefabricated units can, for example, be made of wood, plastic bags or the like. If, for example, tight plastic walls are used, the individual cells can be used in an evacuated manner.
- the individual bed areas are thermally independent of each other without additional measures, so that heat can be selectively added and, above all, removed again in a usable manner with the line sections leading there, even before the entire store has warmed up.
- this allows the heat accumulator to be used shortly after its completion, even if a building is completed around autumn and the entire heat accumulator is no longer fully heatable before winter.
- the solid body fill has such a large residual heat conduction that a sufficiently large amount of heat can flow in within a bed area during the typically daily heat loading. It was recognized that the heat, which gradually developed over a period of several days or weeks, flow from a storage area is not critical since, as a rule, it will lead to the heating of an adjacent storage area, but not to a net loss of heat from the storage area. So you get thanks to the solid body fill a very dynamic storage in the sense that heat is made usable particularly quickly.
- the heat storage is preferably arranged underground, in its particularly preferred variant in the garden under a layer of mother earth.
- the resulting heat losses lead to a targeted heating of the garden area, which is useful for the creation of cold frames, etc.
- the bed temperatures can be set in a targeted manner, which is advantageous for cold frames and the like.
- Glass in particular waste glass, can be used as the heat-storing medium for the solid-body filling.
- This material has the advantage of being inert and rot-proof in the long term and can also be used in groundwater protection tanks without any treatment.
- Another material which is preferred for the solid bulk material is wood, in particular in the form of wood chips and / or sawdust.
- This material is available as a waste material in large quantities at low cost.
- To achieve a tightly packed heat storage it is possible to use only wood shavings and / or sawdust, but coarser wooden parts, such as roughly shredded waste wood, etc. are typically used.
- wood is used for the heat storage, it can be at least partially protected against rot, in particular cement-coated.
- a heat store is constructed in such a way that an outer layer surrounds the actual core store.
- rot-proof wood is then provided; a compression of this outer layer also very largely prevents the penetration of soil moisture into the reservoir, so that coarser and therefore less easily compressible material and / or untreated material can also be used in the interior. If necessary, a surrounding plastic skin, tar layer, etc. can also be used.
- a means for storing latent heat can be added to the solid bed and / or it can be produced from such an agent.
- Paraffin or a similar wax-like substance which is poured in together with wood, can be provided as a means of storing latent heat. This is particularly preferred because the paraffin or the other wax-like substance stores heat latently on the one hand, that is to say can increase the heat capacity of a store significantly and on the other hand also provides protection against rotting by groundwater and / or soil moisture.
- the solid body fill is preferably selected and, if necessary, only compressed to such an extent that the heat conduction in the fill remains low, in particular lower than water permitting convection flows).
- a variety of different areas can be provided, which are run separately with lines.
- the solid body fill is arranged in a pit and the multiplicity of independently addressable, spaced-apart line sections are arranged in m different depths insulated from the fill material.
- a primary line circuit for heat transporting fluid into the bulk material and a secondary line circuit for heat transporting fluid out of the bulk material are provided in the heat store. This allows the simultaneous supply of heat in one area and the removal from another area in particular.
- a lowermost insulating layer is preferably provided first, which at the same time stores heat and is moisture-tight.
- a first storage layer is then arranged on this, which is compressed in order to lay first primary and secondary line sections on the compressed and thus smooth surface.
- a protective sawdust bed can be formed for this purpose.
- a second storage layer is heaped up and optionally compacted. After compression, the next primary and secondary line sections are laid. D it continues until the top level is reached, which is covered by an insulating layer and mother earth.
- the sections in the primary and secondary line circuit can be switched on and off independently of one another, in order to enable the heat to be removed regardless of the supply.
- the heat store can be used with any heat source, in particular also for storing the waste heat from industrial processes, in a particularly preferred exemplary embodiment it is part of a heating system for a building with a solar collector.
- the heat store is provided with a means for initial heating during commissioning.
- Heat stores of the present type are often built together with a residential building. In such a case, the heat storage is typically built together with the house during the warm season, so that commissioning is only possible in autumn. It is then desirable to provide an initial heating means.
- a connection to an external heat source such as a mobile burner or the like, is provided as the means for initial heating.
- a large, conventional but mobile burner can be connected and put into operation here until the desired operating temperatures of the storage tank have been reached. It is therefore not necessary to provide a local, permanently installed burner. Then the initially heated storage tank with collectors or the like to be kept at its temperature.
- the initial heating means may alternatively or further comprise and / or be formed by an additive which is capable of an exothermic reaction.
- a particularly preferred additive is exothermic lime that can be converted or undeleted cement.
- the heat storage or storage area containing the additive can be moistened. Even if wood is provided as a heat storage medium, there is no need to fear rotting due to the moisture supplied, since on the one hand the wood is protected against rotting due to the high degree of heating and fungal attack and the like do not occur at temperatures beyond the 40 ° C. to 50 ° C. limit occurs.
- excess water which may have been supplied will diffuse upward.
- Figure 1 is a schematic view of a heat storage device according to the present invention.
- FIG. 2 shows a schematic view of valves in the heat accumulator from FIG. 1;
- FIG. 3 shows a schematic view of the line course of primary and secondary lines in the heat storage device from FIG. 1.
- 2 primary lines 3 and secondary lines 4 are routed through a heat store 1, generally designated 1, for a residential building.
- the heat storage 1 shown only schematically in FIG. 1 is arranged underground in the garden outside the residential building.
- the amount of the fill is adapted to the predetermined heat requirement of the house, taking heat losses in the storage due to heat conduction, extended cold weather periods etc. into account.
- cement-coated and thus rot-proof wood chips are initially provided in an outer layer 1 a. These wood chips are compacted to prevent soil moisture and / or groundwater from penetrating into the interior of the storage facility.
- the outer layer la thus simultaneously forms the heat storage floor 1b, on which a first rough layer of only roughly shredded waste wood, wood shavings, etc. is provided.
- This first coarse layer is covered with a first compacted fine layer made of finer material such as finer wood chips and sawdust.
- the compression of the first fine layer creates a layer free of large unevenness, on which pipes are laid.
- the pipelines are also compressed
- a surrounding layer of cement-coated and therefore rot-proof wood chips is provided on the outside of each layer.
- the layer structure consisting of pipelines embedded in fine layers and thick coarse layers continues up to the top layer, where a coarse layer with compressed, mentally covered wood shavings are covered with about 20 to 30 cm of mother earth. While only four different layers are shown in the drawing for reasons of illustration, in a practical exemplary embodiment significantly more layers, for example 10 layers, can be provided.
- a first primary and secondary line section 5a, 6a are provided in the lowest material layer near the heat storage floor, and there are three further primary and secondary line sections 5b, 5c, 5d and 6b, likewise in respective fine-layer embeddings, 6c, 6d.
- the primary line 3 is connected to a solar collector 8 on the house roof and comprises a collecting pipe 31 with which heated fluid is transported from the solar collector 8 to the heat store and a collecting return line 311 to return fluid from the heat exchanger to the solar collector.
- a primary circulation circulating pump 9p is also provided in the primary line 3.
- the secondary line 4 is connected to heat consumers in the house 2 and comprises a collecting feed line 41, by means of which fluid to be heated is transported to the heat storage device, and a collecting return line 411, in order to remove heated fluid from the heat Lead storage to consumer in the house.
- the consumer in house 2 can be a low temperature underfloor heating (not shown) or a heat exchanger for heating domestic water.
- a secondary circuit circulating pump 9s is also provided in the secondary line 4.
- the line segments 5a-5d and 6a-6d in each layer lead to the respective collecting lines 31 and 311 or 41 and 411, which extend over all layers. With the exception of the lowermost line segments 4a, 5a, valve arrangements 10 are provided between the collecting lines and the pipe segments running in the layers.
- valve arrangements 10 are designed such that fluid supplied through the supply line I can either be passed through a segment or bypasses it.
- the valve assemblies 10 are further formed such that fluid flowing through a segment can either flow back into the outward manifold I to the following segment or into the rear manifold II.
- valve arrangements 10 like the circulation pumps 9p, 9s, are connected to and controlled by a controller (not shown).
- the heat accumulator of the present invention is constructed and operated as follows.
- the necessary pit is excavated and, with the laying of the lines, filled with the heat-accumulating wood to form the structure described above and with earth covered.
- the fluid and valve control lines are then connected in the house as required.
- the heat radiated towards the end of autumn is used even down to temperatures of the heated fluid of only 25 ° C. as follows.
- the bottom layer and the third layer are heated from below.
- the circulation pump 6p in the P ⁇ markniklauf is put into operation and the valves are controlled so that the fluid flows through the corresponding line segments 5a and 5c.
- the fluid can have temperatures around 25 ° C to about 30 ° C.
- valves are switched accordingly so that The fluid in the pulmonary circulation only flows through this layer.
- this layer is heated to a temperature higher than that of the surrounding two layers.
- the heat losses from this layer into the environment are low, since on the one hand the heat conduction through the layers is low and on the other hand the temperature gradient is significantly lower than that of an unheated layer.
- This heating cycle is repeated over several days and / or weeks. If the temperature of the layer immediately above the heat storage floor has risen to such an extent that it almost corresponds to that of the fluid that can be removed from the solar collector with optimal amounts of heat in the middle of the day, the heat storage device can already be more suitable, albeit with only a small amount of total heat supplied
- the amount of useful heat can be withdrawn via the correspondingly switched second heat circuit.
- the fluid is now supplied in the morning and in the morning into the upper insulating layer close to the mother earth and is introduced into the underlying, previously warmed up layer during the phase of more intense solar radiation.
- This also heats up a second inner layer to the high fluid temperatures that can only be achieved in the midday hours in autumn. Again, the heat loss is low.
- the layer now to be heated up is already slightly warmed by the previous cycle, so that the total amount of heat required for heating ge
- the storage temperatures are measured in a particularly preferred manner and the measured temperatures are also taken into account in the control.
- the removal of heat can also take place taking into account the fact that typically higher temperatures are required for hot water heating than for the supply of, for example, a low-temperature underfloor heating in such a way that the different temperatures in the hot storage tank can be optimally exploited, which can be achieved on the basis of the specific controllable heat storage and the self-insulating effect of the individual layers.
- an already strongly warmed storage area can first be used for domestic water heating until so much heat has been removed with the secondary circuit fluid that domestic water heating is no longer possible in order to then provide for further heat extraction for heating purposes.
- appropriate devices are provided in the house for this purpose. are seen in order to supply the secondary circuit fluid m to the respective consumers in the corresponding manner.
- soil heat losses can be used sensibly, for example, to provide a soil area that is one or a few degrees warmer, in which cold frames or plantings with heat-sensitive plants are laid out.
- layers can be formed than shown.
- Layers of different thicknesses can also be formed, or layers with different heat capacity, for example by storing means for storing latent heat.
- storing means for storing latent heat For this purpose, specially encased or soaked, for example paraff-soaked, wooden parts can be provided.
- the storage facility does not necessarily have to be arranged underground. Rather, it is also possible to arrange the heat-storing and self-insulating material together with fluid lines, temperature sensors, etc. on the otherwise unusable pointed floor of a house or in the low knee area of the roof structure, thus effecting both insulation and active heat storage , Other positions are also possible.
- prefabricated heat stores by using corresponding containers with the solid bed, fluid lines, fluid line connections, temperature sensors, etc.
- the container walls can in particular consist of wood or the like. It is then possible to provide each separately addressable line section in its own container. This facilitates prefabrication. Wooden walls for this are described for example in
- the containers can be put together and / or, for example, in particular arranged in a star shape around a central fluid supply and / or control.
- an exothermically implementable additive for example undeleted lime.
- the amount of lime is chosen so that the wood heats up to temperatures of typically 50 ° C to 80 ° C. This ungelicious Any additive to be mixed in with the bulk material can be extinguished during commissioning or immediately upon filling.
- the moisture used in this process cannot lead to rotting of the wood due to the high temperatures and, moreover, is mostly bound by the lime. This applies in particular if cement-coated or soaked wood is used for the heat storage construction. Due to the low heat conduction of the slaked lime, thermal bridges between debris parts are practically negligible, especially if the intermediate layers are left lime-free.
- the outer insulating regions prefferably be separately heatable, for example by means of separately controllable fluid lines, in order to ensure that they are used for heat even at low fluid temperatures, so that at least heat losses can be avoided, even if the fluid temperatures are no longer sufficient to continue heating the already heated interior of the storage tank.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Central Heating Systems (AREA)
- Other Air-Conditioning Systems (AREA)
- Building Environments (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10082797T DE10082797D2 (de) | 1999-09-16 | 2000-09-16 | Wärmespeicher |
AU13800/01A AU1380001A (en) | 1999-09-16 | 2000-09-16 | Heat accumulator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944438A DE19944438A1 (de) | 1999-09-16 | 1999-09-16 | Wärmespeicher |
DE19944438.2 | 1999-09-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001020240A2 true WO2001020240A2 (de) | 2001-03-22 |
WO2001020240A3 WO2001020240A3 (de) | 2002-03-28 |
Family
ID=7922260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/003224 WO2001020240A2 (de) | 1999-09-16 | 2000-09-16 | Wärmespeicher |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU1380001A (de) |
DE (2) | DE19944438A1 (de) |
WO (1) | WO2001020240A2 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011052220B4 (de) * | 2011-03-30 | 2021-06-10 | Tseng-Tung Hung | Wärmespeichervorrichtung |
DE102008037316B4 (de) | 2007-08-10 | 2023-01-19 | Volker Fischer | Verfahren und Vorrichtung zur Erhöhung der instationären Leistung von Systemen zur energetischen Nutzung des Untergrundes |
DE102022134654A1 (de) | 2022-12-22 | 2024-06-27 | Heinz Pöhler | Energiespeicher und Vorrichtung zum Bereitstellen von thermischer Energie |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19944438A1 (de) | 1999-09-16 | 2001-03-22 | Hdb Weissinger Gmbh | Wärmespeicher |
DE10241364A1 (de) * | 2002-09-06 | 2004-03-18 | Bayerische Motoren Werke Ag | Wärmetauscher mit Wärmespeicherfunktion |
DE10301807A1 (de) * | 2003-01-20 | 2004-07-29 | GEOTEX Ingenieurgesellschaft für Straßen- und Tiefbau mbH | Mehrkammerwärmespeicher |
DE102012218634A1 (de) * | 2012-10-12 | 2014-04-30 | Cm-Institute (Civilisations Matter) E.V. | Speichereinrichtung zur Zwischenspeicherung von thermischer Energie sowie Verfahren zum Betreiben einer Speichereinrichtung |
FR3000181B1 (fr) * | 2012-12-21 | 2018-07-13 | David VENDEIRINHO | Geothermie intro habitat |
JP6127339B2 (ja) * | 2013-01-23 | 2017-05-17 | パナソニックIpマネジメント株式会社 | 蓄熱制御システム、およびこれに用いる蓄熱体 |
FR3006041B1 (fr) * | 2013-05-21 | 2018-02-02 | David VENDEIRINHO | Procede permettant d'augmenter le rendement calorique d'un chauffe-eau solaire |
FR3009070B1 (fr) * | 2013-07-23 | 2017-11-24 | David Vendeirinho | Dispositif de regulation de temperature interne d'une habitation |
DE102022000873A1 (de) | 2022-03-12 | 2023-09-14 | Martin Hirzel | Solares Wärmespeichersystem |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19944438A1 (de) | 1999-09-16 | 2001-03-22 | Hdb Weissinger Gmbh | Wärmespeicher |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK136124B (da) * | 1974-11-12 | 1977-08-15 | Brueel Schioeler & Jensen Aps | Fremgangsmåde ved varmeakkumulering og akkumulator til udøvelse af fremgangsmåden. |
CH598544A5 (de) * | 1975-09-29 | 1978-04-28 | Swisspor Ag Boswil | |
FR2360838A2 (fr) * | 1975-11-13 | 1978-03-03 | Erap | Procede et dispositif de stockage souterrain de chaleur en milieu poreux et permeable |
DE2704938A1 (de) * | 1977-02-07 | 1978-08-10 | Uwe Hansen | Vorrichtung zur verlustarmen speicherung von waermeenergie in einem waermespeicher und zur verlustarmen entnahme der gespeicherten waermeenergie aus diesem waermespeicher |
NL170563C (nl) * | 1977-04-05 | 1982-11-16 | Ir Jon Kristinsson | Stelsel voor het tijdelijk opslaan van energie in de grond. |
US4153047A (en) * | 1977-07-13 | 1979-05-08 | Dumbeck Robert F | Heat storage systems |
FR2444234A1 (fr) * | 1978-12-13 | 1980-07-11 | Rapin Marcel | Perfectionnements aux installations de chauffage utilisant comme source d'energie le rayonnement solaire |
FR2461897A2 (fr) * | 1979-07-18 | 1981-02-06 | Olivet Jean | Systeme de stockage saisonnier de chaleur dans le sol applique au chauffage solaire |
NL8101353A (nl) * | 1981-03-19 | 1982-10-18 | Merlang Holding Sa | Inrichting voor het opslaan van koude. |
DE3124021C2 (de) * | 1981-06-19 | 1985-02-14 | Dornier System Gmbh, 7990 Friedrichshafen | Wärmespeicher für eine Heizungsanlage |
DE3915270A1 (de) * | 1989-05-10 | 1990-11-15 | Kurt Prof Dr Ing Kugeler | Verfahren zur reduktion von temperaturtransienten |
-
1999
- 1999-09-16 DE DE19944438A patent/DE19944438A1/de not_active Withdrawn
-
2000
- 2000-09-16 DE DE10082797T patent/DE10082797D2/de not_active Expired - Fee Related
- 2000-09-16 WO PCT/DE2000/003224 patent/WO2001020240A2/de active Application Filing
- 2000-09-16 AU AU13800/01A patent/AU1380001A/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19944438A1 (de) | 1999-09-16 | 2001-03-22 | Hdb Weissinger Gmbh | Wärmespeicher |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008037316B4 (de) | 2007-08-10 | 2023-01-19 | Volker Fischer | Verfahren und Vorrichtung zur Erhöhung der instationären Leistung von Systemen zur energetischen Nutzung des Untergrundes |
DE102011052220B4 (de) * | 2011-03-30 | 2021-06-10 | Tseng-Tung Hung | Wärmespeichervorrichtung |
DE102022134654A1 (de) | 2022-12-22 | 2024-06-27 | Heinz Pöhler | Energiespeicher und Vorrichtung zum Bereitstellen von thermischer Energie |
Also Published As
Publication number | Publication date |
---|---|
AU1380001A (en) | 2001-04-17 |
DE10082797D2 (de) | 2002-03-07 |
WO2001020240A3 (de) | 2002-03-28 |
DE19944438A1 (de) | 2001-03-22 |
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