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WO2003027595A2 - Accumulateur a temperature elevee - Google Patents

Accumulateur a temperature elevee Download PDF

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Publication number
WO2003027595A2
WO2003027595A2 PCT/EP2002/010429 EP0210429W WO03027595A2 WO 2003027595 A2 WO2003027595 A2 WO 2003027595A2 EP 0210429 W EP0210429 W EP 0210429W WO 03027595 A2 WO03027595 A2 WO 03027595A2
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WO
WIPO (PCT)
Prior art keywords
temperature
storage material
insulation
heat
temperature storage
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.)
Ceased
Application number
PCT/EP2002/010429
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German (de)
English (en)
Other versions
WO2003027595A3 (fr
Inventor
Werner Foppe
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AU2002338718A priority Critical patent/AU2002338718A1/en
Publication of WO2003027595A2 publication Critical patent/WO2003027595A2/fr
Publication of WO2003027595A3 publication Critical patent/WO2003027595A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/14—Solid materials, e.g. powdery or granular
    • 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 invention relates to a high-temperature accumulator and a method for isolating hot objects from the environment.
  • Such high-temperature accumulators can be used to store significant amounts of thermal energy and, if required, to release them and make them usable again on request.
  • a high-temperature accumulator in the sense of the invention is understood to mean an accumulator in which, when charged, temperatures inside are well above 1000 ° C., typically 3000 ° C.
  • Such a high-temperature accumulator usually comprises a high-temperature storage material which has a high heat capacity and can be heated up to these high temperatures, that is to say is permanently stable at this high temperature level.
  • graphite (carbon) can be selected as the high-temperature storage material, since in addition to a high thermal capacity of approx. 2 J / gK for the temperature range 1000 ° C. to 3000 ° C., this material also has a temperature resistance of over 3000 ° C.
  • metal melts for example alkali metal melts, as high-temperature storage material. to be used which can exist in different aggregate states within the accumulator system.
  • Alkali metals have a heat capacity of approx. 1500 J / KgK for sodium up to approx. 5000 J / KgK for lithium at 1000 ° C.
  • transitions between the states of matter for example from the superheated liquid to the vapor phase, large amounts of energy in the range of 2 kWh or 5 kWh per liter of stored energy can be released.
  • the graphite core storing the thermal energy can be designed as a block of any shape.
  • a high-temperature accumulator based on metal melts is constructed, for example, in such a way that the metal melt storing the heat energy is enclosed by a graphite hollow body.
  • Such a high-temperature accumulator is described, for example, in WO99 / 07 804.
  • the efficiency of such a high-temperature battery is significantly influenced by the type of insulation from the environment.
  • a high-temperature accumulator of the type described must be insulated with a substantial amount of insulation material from a core temperature in the range of approximately 3000 ° C. to an ambient temperature of only approximately 30 ° C.
  • the quality of this insulation material is a key measure of the amount of heat lost, which has a negative impact on the overall efficiency of the battery.
  • significant amounts of insulation material must be arranged around the hot storage material core for insulation from approximately 3000 ° C. to 30 ° C., which on the one hand makes a high-temperature accumulator of the type described expensive and on the other hand causes a considerable size due to the voluminous insulation.
  • the object of the invention is to improve a high-temperature accumulator of the type described in such a way that, on the one hand, the stored thermal energy can be used as completely as possible within a very short time and, on the other hand, the efficiency of a high-temperature accumulator is increased, in particular in the specific application.
  • the insulation material which surrounds the high-temperature storage material for insulation from the environment is subdivided into at least two layers of insulation material and the thermal energy occurring in the boundary region between two insulation layers can be conducted out of the high-temperature accumulator by means of at least one heat-conducting agent.
  • This principle of insulation can in principle be applied to all hot objects that are to be isolated from the environment.
  • the materials can e.g. consist of:
  • a high-temperature insulator such as flame black with a microporous structure or Printex 95, which have a thermal conductivity of approximately 0.12 W / mK at 1500 ° C.
  • a low-temperature insulator such as Wacker WDS made from highly disperse silica with a 5 to 10 times better insulation value (approx. 0.02 W / mK at room temperature to approx. 0.045 W / mK at 800 ° C) like the high temperature insulator.
  • a high-temperature accumulator which comprises, for example, a high-temperature storage material formed as a solid
  • at least one heat-conducting means (8) is arranged within the high-temperature storage material, in particular in order to withdraw or store the stored thermal energy from the high-temperature storage material (2) deflecting heat flow occurring from the high-temperature storage material (2).
  • the high temperature storage material can e.g. be divided into several layers, at least one heat conducting means being arranged between each layer in order to extract the stored thermal energy from the high-temperature storage material.
  • the storage material can also be provided with bores into which heat-conducting agents are introduced in order to ensure optimum heat removal.
  • the high-temperature storage material which has, for example, a core temperature of approximately 3000 ° C.
  • the insulation material in order to isolate this temperature down to the ambient temperature, for example by 30 ° C.
  • the aforementioned large-volume construction of the high-temperature accumulator is necessary, since a very large insulation material thickness is required around the high-temperature storage material core in order to achieve the above-mentioned insulation at ambient temperature.
  • a temperature gradient occurs within the insulation, starting from the high-temperature storage material up to the outer area of the high-temperature accumulator or the insulation. The thermal energy that is released from the high-temperature storage material into the insulation and ultimately to the environment is lost in normal high-temperature accumulator structures, and accordingly reduces the efficiency of the accumulator.
  • a high temperature insulator e.g. Flame black
  • a high temperature insulator e.g. Flame black
  • 3000 ° C - 150 ° C e.g. an insulating layer thickness of about 30 cm.
  • a layer thickness of about 150 cm is required.
  • the continuous heat flow through the high-temperature insulator is blocked.
  • the high-temperature insulator heats up and thus its insulating effect deteriorates.
  • this problem is solved in that when the insulation thickness is reduced by using an at least two-layer insulation composed of a high-temperature and a low-temperature insulator, the heat flow, which accumulates in front of the better insulating low-temperature insulator, is dissipated by suitable heat-conducting agents.
  • This heat can, for example, be dissipated to an MHD liquid metal circuit for further use.
  • Such an energy converter which converts the high-temperature thermal energy into electrical energy
  • MHD generator magnetohydrodynamic generator
  • Such a so-called MHD generator can have a self-contained liquid metal circuit from which energy is extracted and converted into electrical energy by the principle of deflecting electrical charges in a magnetic field and accumulating these charges on electrodes (Hall effect).
  • the temperature level of the circulating metal melt is, for example, approximately 800-1000 ° C.
  • the thermal energy accumulating in the insulation material of a high-temperature accumulator which would be lost under other circumstances, e.g. can be used via the MHD generator.
  • the thermal energy obtained at a temperature level of 1000 ° C. can be tapped by means of heat conducting means in order to continuously supply this thermal energy to an energy consumer, such as the above-mentioned MHD generator.
  • an energy consumer such as the above-mentioned MHD generator.
  • the temperature level within this boundary layer automatically drops, for example from 1000 ° C. to 700-800 ° C. Only this remaining temperature must be insulated further from the ambient temperature by means of a second layer of insulation material, in particular a layer which has a significantly better insulation effect at this temperature level.
  • the second insulation layer can be significantly smaller than in known high-temperature accumulators.
  • a high-temperature accumulator according to the invention accordingly has the advantage that, on the one hand, the stored thermal energy is better utilized can be, since the additional efficiency of the waste heat occurring in the insulation layer increases the effective efficiency and furthermore, a high-temperature accumulator according to the invention has a significantly smaller, lower-volume structure, since insulation material can be saved and / or for the lower temperature range in the outer insulation layers a material with lower thermal conductivity can be used.
  • the insulation material that is installed in the various layers around the high-temperature storage material can, depending on the layer, preferably be material with different insulation properties, but also the same material in each case. It is thus possible to select the optimal insulation material for the respective temperature ranges in which the insulation material is used.
  • insulation from the temperature range 3000 ° C to 1000 ° C soot or Printex 95 and to use the usual insulation materials such as those for the temperature level below, for example from 700 ° C to ambient temperature for example by the company Wacker-Chemie.
  • the specialist dealing with the relevant topic will select the optimal insulation material for the desired temperature range.
  • the high-temperature storage material is designed as a solid, for example to use a graphite core (carbon) which stores the heat energy.
  • a graphite core which is uniformly heated up to a very high temperature level of, for example, 3000 ° C., can be removed in a particularly efficient and above all fast manner in the manner according to the invention if heat-conducting agents are arranged within the high-temperature storage material.
  • thermal conductors not only to tap the stored thermal energy via the outer circumference of the high-temperature storage material, that is to say, for example, the graphite core, but to take an energy tap from the volume of the storage material.
  • the storage material can preferably be subdivided into several layers in order to carry out the heat removal from each layer separately and thus to make the stored thermal energy usable from the interior of the core in an efficient and particularly rapid manner.
  • At least one heat-conducting means can be arranged between each layer of the high-temperature storage material in order to withdraw the stored thermal energy from the high-temperature storage material.
  • This stored thermal energy can then in various ways via the said heat conducting means each desired heat energy consumer, for example again an MHD generator of the type described above, are supplied.
  • heat-conducting agents can be used, which include, for example, heat pipes, carbon nanotubes, carbon powder or carbon foils. These devices are distinguished from conventional normal metallic heat conductors by an excellent thermal conductivity, some of which is a thousand times higher.
  • the described heat-conducting means can be used not only to dissipate the heat from the insulation layers or the layers of the high-temperature storage material, but generally to dissipate the heat energy from a high-temperature accumulator of any type of construction.
  • heat pipe in the sense of the described invention does not necessarily refer to tubular heat conducting means in accordance with the word choice "pipe”, but in the sense of the invention it is to be understood to mean any construction forms of heat conducting means that go back to the working principle of heat pipes , in particular heat pipe surfaces understood so-called flat heat pipes, which can preferably be used between the layers of the insulation material or also the high-temperature storage material.
  • the heat pipe principle is essentially based on the fact that a liquid is present within a self-contained hollow body which wets the internal surfaces of this hollow body. If heat is now applied to such a heat pipe at any point on the surface, the liquid begins to evaporate there and goes into the vapor phase while absorbing thermal energy about. This steam is distributed at a very high speed within the hollow body and condenses while emitting heat at a colder point in the heat pipe.
  • a heat pipe has a thousand times better thermal conductivity than, for example, copper and, since the principle can be applied to any hollow body, can accordingly be produced in almost any shape and size. Accordingly, there is also the possibility of realizing flat heat pipes, which can be provided particularly preferably for use with the above-mentioned layers.
  • Such heat pipes can also consist of carbon in the high temperature range.
  • a liquid in such heat pipes e.g. metals are also used which are in the desired working temperature range in liquid and vapor phase and which do not react with the heat pipe material.
  • heat-conducting agents can be used which comprise the carbon or graphite devices mentioned above.
  • Graphite in general is characterized by excellent thermal conductivity, so that heat-conducting agents based on this material are also preferred.
  • carbon nanotubes consist of uniformly constructed graphite cylinder molecules with excellent properties in terms of strength and thermal conductivity. In this way, these nanotubes can also be constructed as hollow bodies using the heat pipe principle.
  • Carbon foils have the further advantage that they have a high electrical resistance perpendicular to the surface and at the same time are very good heat conductors.
  • the specific electrical resistance can be, for example, 8 to 10 ohms / micrometer parallel to the surface and approximately 600 to 800 ohms / micrometer perpendicular to it.
  • the thermal conductivity can be optimally adjusted by varying the production parameters. This too Foils can be used as heat conducting agents.
  • carbon powder or carbon nanotube powder can also be used. If necessary, the powder is used as a coating on a carrier material, which can then be used as a heat-conducting agent.
  • the high-temperature storage material In order to charge the high-temperature accumulator with thermal energy, the high-temperature storage material is generally heated by means of electricity.
  • the high-temperature storage material in particular each storage material layer according to the preferred embodiment mentioned above, comprises at least one heating means by means of which heating is possible.
  • electrical heating can be implemented by excess current or low tariff current.
  • each storage material layer itself, current flows through it and serves as an electrical line. Accordingly, the particularly good conductivity of a high-temperature storage material made of graphite can be used in this construction.
  • the electrical current heating of the high-temperature storage material can preferably be configured such that the current for a uniform heating passes through the high-temperature storage material, for example in a meandering manner, and thus ensures uniform heating.
  • This current profile can be realized, for example, by a correspondingly provided power line, or there is alternatively and particularly preferably the possibility of selecting the layer structure of the high-temperature storage material in such a way that when the current flows directly through the layer of the high-temperature storage material, the current flow follows the layer profile and thus follows through the alternating sequence of a High temperature storage material layer, a heat conducting agent arranged between them and a next subsequent high temperature storage material layer results in the desired current profile.
  • the heat-conducting agent for example a carbon film, is designed such that it electrically insulates adjacent layers of storage material from one another, so that the current can predominantly or only pass from one storage material layer to the next where the storage material layers are in good contact with one another.
  • the high-temperature accumulator comprises a high-pressure accumulator for liquid metal, in particular within the insulation of the accumulator.
  • the high-pressure accumulator which in turn consists of carbon, for example, and preferably carbon-fiber-reinforced carbon such as SIGRABOND, can be connected to the high-temperature storage material via heat-conducting agents.
  • the heat conducting means can in turn the mentioned Heatpipes, carbon nanotubes, carbon powders, carbon foils, etc., or be formed from these.
  • the heat conduction takes place in such a way that the heat energy is withdrawn from the individual layers of the high-temperature storage material via the heat-conducting means and is fed directly to the high-pressure store for liquid metal.
  • the alkali metals sodium, potassium, cesium, lithium etc. or other metals can be used as the liquid metal. It is important that these metals are in the liquid phase in the working temperature range of the MHD generator and have a suitable evaporation point.
  • the high-temperature storage material can be provided with at least one cavity, which forms a high-pressure storage for liquid metal.
  • the heat is transferred directly from the storage material to the liquid metal.
  • a device with a magneto-hydrodynamic generator can be supplied with the highly heated liquid metal from the high-pressure accumulator described, be it within the high-temperature accumulator or externally. Due to the direct coupling of the high-temperature storage material with the high-pressure storage for liquid metal, this liquid metal is heated to a temperature range of around 3000 ° C. under pressure build-up without evaporating. The liquid metal can then be fed to a liquid metal circuit of the MHD generator by means of appropriate line elements and, if appropriate, with the aid of a magnetic pump, which can already be operated, inter alia, by the current generated by the MHD generator.
  • MHD generator magneto-hydrodynamic generator
  • the highly heated liquid metal for example up to a temperature range of 3000 ° C. or more, can be supplied via the lines and a nozzle in which the under .
  • Pressurized expanded liquid metal will be introduced into the liquid metal circuit of the MHD generator, which leads to a large increase in volume and thus to an increase in the kinetic energy as well as to a considerable heating of the metal in the circuit.
  • the expansion nozzle for the high-temperature melt can be placed in the metal melt circuit of the MHD generator in such a way that it works like a steam jet pump and maintains a forced circulation.
  • the liquid metal which has cooled down after the expansion and after passing through the best-before date generator and is at a lower pressure level, can then be returned to the high-pressure accumulator through appropriate supply lines and with a magnetic pump, if any, which has already been mentioned, and there again with energy withdrawal from the high-temperature storage material heated up and made available again.
  • Figure 1 A schematic diagram of the high-temperature battery according to the invention with connection to an MHD generator.
  • Figure 2 A detailed view of the high-temperature storage material divided into disks with heat-conducting means arranged between the disks.
  • Figure 3 The outer wall temperatures of a carbon / metal memory with different insulation layer thicknesses and thermal conductivities.
  • FIG. 1 shows a schematic representation in the upper area of a high-temperature accumulator 1 according to the invention, which is connected to a device 11, which comprises a magneto-hydrodynamic generator (MHD generator) 7, for converting the stored thermal energy into electrical energy.
  • MHD generator magneto-hydrodynamic generator
  • the high-temperature accumulator 1 comprises a graphite core 2 which is divided into a plurality of disks 2a, 2b, 2c, ....
  • the graphite core or block 2 and the associated disks are heated by a meandering current guide.
  • the meandering current guide 9 enables a very uniform heating of the high-temperature storage material 2 made of graphite and can be realized, for example, by an explicitly provided heating line 9 or by a special structural design of the layers 2a, 2b, 2c, ... of the high-temperature storage material. An example of such a structure is shown in more detail in FIG. 2.
  • the heat energy stored in the high-temperature storage material 2 can be withdrawn from the high-temperature storage material for use in the illustrated exemplary embodiment by a large number of heat-conducting means 8/12, which are each arranged between the individual layers of the high-temperature storage material 2.
  • These can be heat pipes, for example.
  • the individual heat pipes 8, which also ensure uniform heat removal from the inner volume of the high-temperature storage material 2, are directly connected with their connections 12 to a thermal energy consumer 10, which in the present case represents a high-pressure store for liquid metal according to the exemplary embodiment shown.
  • the maximum heated high-temperature storage block 2 for example via excess current or low tariff, emits the heat energy to the liquid metal in the high-pressure storage 10 via the heat pipes 8, so that a temperature equilibrium is established and the liquid metal to the maximum temperature of the high-temperature storage material, for example up to 3000 ° C. or more is heated.
  • the stored thermal energy can be withdrawn from the high-temperature accumulator 1, which also includes the high-pressure accumulator 10 for liquid metal within its insulation 3, by requesting that the heated liquid metal from the high-pressure accumulator 10 via corresponding lines 15 e.g. is relaxed by opening the nozzle 16.
  • cooled liquid metal is fed back into the high-pressure accumulator via a magnetic pump, so that heat energy transport via the heat pipes 8 from the high-temperature storage material 2 into the liquid metal continues until an equilibrium has been established again.
  • this flows e.g. liquid metal heated up to 3000 ° C., which is, for example, an alkali metal such as sodium, potassium, lithium or their alloys, into an expansion nozzle 16, expands while cooling and sets the liquid metal circuit 6 in a circulating movement.
  • the expansion mentioned takes place due to the fact that the liquid metal is under high pressure at the high temperature of approximately 3000 ° C. and therefore remains liquid because the evaporation temperature increases with increasing pressure.
  • the hot liquid metal flows in the direction of arrows 17 through the liquid metal circuit 6 and passes through it magneto-hydrodynamic generator 7, which consists of a pair of electrodes, which is arranged in a magnetic field, not shown.
  • the magnetic pump 13, which takes care of the transport of the highly heated liquid metal from the high-pressure accumulator into the liquid metal circuit 6, can be operated directly via the permanent magnetic field of the MHD generator, in which the delivery line 15 describes an S curve parallel to the magnetic lines in the direction of delivery.
  • the liquid metal cooling within the liquid metal circuit emerges from the circuit 6 again in the vicinity of the nozzle 16 and is pumped back by the magnetic pump 13 into the high-pressure accumulator 10 for liquid metal, where it is heated again.
  • the exemplary embodiment In order to avoid solidification of the MHD liquid metal circuit, it is provided in the exemplary embodiment to additionally introduce thermal energy directly into the circuit 6 at the desired temperature level by means of the heat-conducting means 5, which in turn can be heat pipes, for example.
  • the insulation 3 of the high-temperature accumulator 1 in the illustrated embodiment is divided into two areas 3a and 3b.
  • a temperature gradient is established within the insulation material 3, so that the temperature drops from 3000 ° C. in the vicinity of the storage material 2 to ambient temperature. Due to the temperature gradient, a temperature of, for example, 1000 ° C. results within the insulation material 3 at a certain distance from the high-temperature storage material 2.
  • heat conducting means that is to say for example heat pipes 5 are again arranged, which completely surround the insulation layer 3a.
  • heat pipes 5 the amount of heat flow obtained at, for example, 1000 ° C. is transferred directly into the liquid metal circuit 6 and used for the production of electricity for any own electricity consumers or as heat supply for the MHD liquid metal circuit.
  • the insulation layer 3b can be significantly smaller than, for example, the insulation layer thickness 3a.
  • a reduction in the insulation layer thickness also results from the 2-layer structure according to the invention, in which the outer insulation layer 3b has a better insulation property than the inner layer 3a.
  • FIG. 3 shows theoretical calculations based on an assumed spherical or plate-shaped memory core of different types Dimensions in an insulated accumulator at 20 ° C ambient temperature and a heat transfer coefficient on the outer surface of the accumulator to air of approx. 10 W / m 2 K, that for the insulation of a hot storage core from 2861 ° C to a temperature of approx. 30 ° C Insulation layer thickness of approx. 150 cm of soot with a thermal conductivity of approx. 0.138 W / mK is required at this temperature level. Curves 20, 21, 22 and 23 show this dependency. So if you restrict yourself to the use of this high-temperature stable insulation material, this means that the accumulator has a very voluminous structure.
  • Insulation from 2861 ° C to only 150 ° C at this high temperature level only requires about 30 cm of soot, as the same curves show. With insulation to only approx. 800 to 900 ° C, the insulation layer thickness can be reduced even further.
  • the insulation layer thickness changes accordingly from approx. 150 cm with only one high temperature stable material to approx. 50-60 cm with a 2-layer construction and the use of materials with different thermal conductivities.
  • the heat build-up that results from the better insulation properties of the second outer layer in the border area of the two layers, can, as described above, be removed from the insulation by thermal conductors and made usable.
  • FIG. 1 is only a schematic representation, which does not reproduce the constructive features of the design of the heat pipes and the high-temperature storage material 2 in detail.
  • FIG. 2 shows, in one possible exemplary embodiment, a specific constructive embodiment of the high-temperature storage material 2 in the form of three high-temperature storage layers 2b, 2c and 2d shown as examples.
  • Each of these individual high-temperature storage layers is designed in such a way that it looks approximately S-shaped in cross section, i. H. that at the upper and lower end of each layer there is a projection facing the next layer, the end face 18 of each of these projections being in contact with the corresponding opposite end face 18 of the subsequent high-temperature storage layer.
  • This flat heat pipe 8 optionally with the aid of an insulation material, electrically isolates the individual layers 2b, 2c and 2d from one another, so that a current introduced into the end face 18 can only pass through the layers in the meandering shape 9 shown.
  • the heat pipes 8 are only shown with a gap in relation to the individual high-temperature storage layers 2b, 2c and 2d for a better graphic representation. In the specific case, there is an intimate contact between the heat pipes 8 and the storage layers in order to achieve optimal heat conduction to realize between these elements. Due to the design of the storage layers 2b, 2c and 2d, the heat pipes themselves are always slightly offset from one another and arranged parallel to one another, so that the heat pipe connections 12 are arranged at different locations relative to each heat pipe in order to ensure that the bundle of all connections 12 emerges from the high-temperature storage material 2 within a constant level and can accordingly be supplied in a simple manner, for example bundled to the high-pressure storage for liquid metal.
  • FIG. 2 is only one of many exemplary embodiments for carrying out the construction of the individual layers of the high-temperature storage material, so that, for example, a desired current flow results.
  • a desired current flow results.
  • a high-temperature accumulator is obtained which, in the application shown, has a very high efficiency due to heat tapping within the insulation and the heat tapping from individual layers of the storage material and, moreover, enables very rapid heat energy transport.

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Abstract

L'invention concerne un accumulateur à température élevée (1) comprenant une matière d'accumulation à température élevée (2), en particulier un noyau de graphite (2) accumulant l'énergie thermique. Cette matière d'accumulation à température élevée (2) est entourée d'une matière isolante (3) destinée à l'isoler du milieu environnant. Cette matière isolante (3) se divise en au moins deux couches de matière isolante (3a, 3b) et l'énergie thermique accumulée entre les deux couches de matière isolante (3a, 3b) dans la zone limite (4) peut être conduite hors de l'accumulateur à température élevée (1) à l'aide d'au moins un moyen de conduction thermique (5). L'invention se rapporte également à un accumulateur à température élevée (1) comprenant une matière d'accumulation à température élevée (2) se présentant sous la forme d'un solide, en particulier d'un noyau de graphite (2) accumulant l'énergie thermique, et dans lequel est au moins disposé un moyen de conduction thermique (8) conçu pour retirer l'énergie thermique accumulée dans la matière d'accumulation à température élevée (2). L'invention concerne en outre un procédé d'isolation d'objets chauds.
PCT/EP2002/010429 2001-09-21 2002-09-17 Accumulateur a temperature elevee Ceased WO2003027595A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002338718A AU2002338718A1 (en) 2001-09-21 2002-09-17 High-temperature accumulator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10146699A DE10146699A1 (de) 2001-09-21 2001-09-21 Hochtemperatur-Akkumulator
DE10146699.4 2001-09-21

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Publication Number Publication Date
WO2003027595A2 true WO2003027595A2 (fr) 2003-04-03
WO2003027595A3 WO2003027595A3 (fr) 2004-03-11

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DE (1) DE10146699A1 (fr)
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005088218A1 (fr) * 2004-03-12 2005-09-22 Larkden Pty Limited Procede et dispositif pour stocker de l'energie thermique
WO2015085357A1 (fr) * 2013-12-12 2015-06-18 Graphite Energy N.V. Dispositif d'accumulation d'énergie thermique
WO2018232486A1 (fr) * 2017-06-22 2018-12-27 Kelvin Thermal Energy, Inc. Système de production d'énergie thermique stabilisée

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DE102010011768A1 (de) 2010-03-30 2011-12-15 Werner Foppe Electric-Driving-Systems
CN103154657A (zh) * 2010-05-28 2013-06-12 凯尔文储存技术公司 高密度能量储存及恢复
DE102013012312A1 (de) * 2013-07-25 2015-01-29 Franz-Josef Struffert Wärme- und Kältespeicherelement

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DE2645261A1 (de) * 1976-10-07 1978-04-13 Varta Batterie Wiederaufladbarer hochtemperaturakkumulator
DE3210370C2 (de) * 1982-02-11 1984-04-12 Walter Dr. 5902 Unglinghausen Helmbold Langzeit-Wärmespeicher
CA2185438C (fr) * 1994-03-16 2004-02-10 Robert Lloyd Production d'electricite et procede de moulage de lentille
DE19734733A1 (de) * 1997-08-11 1999-02-18 Werner Foppe Verfahren zum Antriebstromnetz unabhängiger Land-, Wasser-, Luft- und Raumfahrzeuge durch Hochtemperatur-Akkumulatoren
JP2000241091A (ja) * 1999-02-23 2000-09-08 Agency Of Ind Science & Technol 蓄熱装置

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WO2005088218A1 (fr) * 2004-03-12 2005-09-22 Larkden Pty Limited Procede et dispositif pour stocker de l'energie thermique
US8056341B2 (en) 2004-03-12 2011-11-15 Lardken Pty Limited Method and apparatus for storing heat energy
WO2015085357A1 (fr) * 2013-12-12 2015-06-18 Graphite Energy N.V. Dispositif d'accumulation d'énergie thermique
WO2018232486A1 (fr) * 2017-06-22 2018-12-27 Kelvin Thermal Energy, Inc. Système de production d'énergie thermique stabilisée

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