WO2002012814A1 - Accumulateur de chaleur latente - Google Patents

Accumulateur de chaleur latente Download PDF

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Publication number
WO2002012814A1
WO2002012814A1 PCT/EP2001/008974 EP0108974W WO0212814A1 WO 2002012814 A1 WO2002012814 A1 WO 2002012814A1 EP 0108974 W EP0108974 W EP 0108974W WO 0212814 A1 WO0212814 A1 WO 0212814A1
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WO
WIPO (PCT)
Prior art keywords
latent
heat
storage container
medium
storage
Prior art date
Application number
PCT/EP2001/008974
Other languages
German (de)
English (en)
Inventor
Alfred Pommerenke
Original Assignee
Globe Thermal Energy Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE10108150A external-priority patent/DE10108150A1/de
Application filed by Globe Thermal Energy Ag filed Critical Globe Thermal Energy Ag
Publication of WO2002012814A1 publication Critical patent/WO2002012814A1/fr

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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
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F28D20/028—Control arrangements therefor
    • 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
    • F28D20/021—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material and the heat-exchanging means being enclosed in one container
    • 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 latent heat accumulator of claims 1, 23 and 29 and a method of the type corresponding to claims 17 and 26.
  • the latent heat stores in question are heat stores in which substances (latent storage media) store or emit energy in the form of heat when their physical state changes.
  • substances latent storage media
  • the heat of fusion or solidification is called latent (hidden) heat.
  • Such latent heat storage devices are usually fed by means of heat coming from solar systems, which has the advantage of using the heat obtained directly and makes sense for ecological reasons.
  • Such a latent heat store is described, for example, in DE 199 53 113
  • This latent heat storage has a storage tank, which is filled with a salt hydrate as latent storage medium, in which a heat exchanger for heating or cooling a secondary medium is arranged.
  • the heat exchanger here has a plurality of heat-conducting plates which are spaced apart from one another by gaps and which are in thermal contact with the secondary medium.
  • a disadvantage of the conventional latent heat storage is that due to their design they only provide a part of the possible performance, since the salt hydrate cannot be melted or solidified quickly and evenly, so that the known systems have a great sluggishness in dispensing and Have absorption of heat. They are not able to absorb this quickly when there is a large amount of heat, which is provided, for example, by solar systems when the sun is shining. This means that part of the existing heat is lost.
  • an additional heating source is required for heat storage systems operated by solar systems if the solar radiation is no longer sufficient to maintain the necessary temperature of the latent storage medium. If electric power is used for this purpose, this should advantageously be done at times when the electricity tariff is low, i.e. H. mainly at night.
  • the previously known systems can only do this to a limited extent because of the inertia, especially since part of the energy is lost through the inertia.
  • Heat at peak loads such as occurs when showering or filling bathtubs, cannot be released to the water or secondary medium quickly enough. As a result, the water is not heated evenly and there are undesirable temperature fluctuations at the consumer.
  • the object of the invention is therefore to achieve an optimization of the storage capacity and a reduction in the inertia of a latent heat store with a simple structure.
  • the latent heat storage comprises a first storage container which is filled with a latent storage medium and a heat transfer medium and a second storage container which is filled with a secondary medium, wherein a heat exchanger is arranged in the first storage container for heating or cooling the latent storage medium , the first storage container is arranged within the second, outer storage container and the outside of the inner storage container is in connection with the secondary medium, it is possible to a large extent Load transfer to the secondary medium and thus to achieve a complete or at least better use of thermal energy, especially solar energy.
  • the secondary medium can be water, for example.
  • the inner storage container is thus via its outside in a heat-transmitting, in particular heat-conducting connection to the secondary medium surrounding it.
  • a secondary medium flows through the heat exchanger arranged in the inner storage container.
  • two separate circuits can be used to operate the latent heat storage: a first circuit for heating the latent storage medium and a second circuit for supplying the consumers.
  • a connection of the circuits for better heat utilization is also conceivable.
  • the secondary medium first flows through the heat exchanger for heating the latent storage medium and then reaches the second, outer storage container for consumption.
  • the heat exchanger arranged in the inner storage container is advantageously a tube heat exchanger and advantageously comprises at least one approximately vertically arranged tube.
  • a separate arrangement of the tubes is also advantageous. So through the large areas particularly fast and complete melting of the latent storage medium is achieved without so-called "dead" corners. This is supported by the wall of the inner storage tank, which immediately transfers the heat to the secondary medium.
  • a coil-shaped arrangement of the tubes is also conceivable. An even larger surface area and thus better heat transfer to the latent storage medium is achieved if the tubes are provided with heat conducting plates.
  • the secondary medium present in the second, outer storage container can advantageously be heated by suitable means, these advantageously comprising a heating rod which is surrounded by the secondary medium and is preferably operated electrically, the heating rod being arranged either inside or outside the second storage container. This will create a
  • the heating source is located outside the storage tank, it can contain a pump for circulation and the storage tank does not have to be emptied for maintenance or decalcification. It is also conceivable to operate the means via a heat pump or via electrical energy from solar cells that is temporarily stored in a battery.
  • an expansion tank communicating with the inner storage tank is arranged outside the latent heat store, a breathing line to the outside can be dispensed with, so that no moisture penetrates into the system despite a change in volume of the latent storage medium and / or the thermal oil.
  • the latent storage medium also retains its properties. Furthermore, complete use of the storage space is achieved, since even if the latent storage medium crystallizes completely, the upper part of the storage device remains filled with heat transfer medium and is charged when heat enters. No expansion space must be provided within the memory, so that the capacity of the memory increases with the same total manipulated variable.
  • the state of charge or degree of saturation of the store can be determined via the fill level of the heat transfer medium, which is displaced when the volume changes, so that a fill level indicator is provided for the inner store container.
  • This is preferably arranged on the expansion tank.
  • the supply of heat in the inner storage tank can be regulated via the fill level display. This can be done, for example, simply by means of a pressure meter or a level meter, such as a float.
  • an external heat exchanger through which the secondary medium (for example water) flows through from the second, outer storage container is provided.
  • the secondary medium itself can be used for heating purposes and the second heat exchanger for domestic water heating such as hot water preparation. This makes it possible to decouple the heating from the hot water preparation. This is due to the relative temperature constancy of the flow and return of a heater from
  • pressure compensation means are provided for the secondary media, which are preferably designed as pressure compensation containers, the thermal expansion of the secondary means is possible in a closed circuit.
  • multiple latent heat storage can be connected to a storage battery and the secondary media flow through the first heat exchanger and / or the second storage container in series and / or in parallel, which results in particularly good use of the thermal energy.
  • a secondary medium is heated or cooled by a latent heat storage, which consists of a first storage container that is filled with a latent storage medium and a heat transfer medium, and from a second storage container that is filled with the secondary medium ,
  • a heat exchanger arranged in the first storage container heats or cools the latent storage medium
  • the first storage container is arranged inside the second, outer storage container, so that the
  • Thermal energy in particular solar energy can be achieved because the heating (or cooling) of the secondary medium is carried out faster, so that it can be used to operate the consumer without temperature fluctuations.
  • the heat exchange between the latent storage medium in the inner storage container and the secondary medium takes place continuously via the wall of the inner storage container, which is in contact with the secondary medium.
  • the heat is supplied and / or removed by a suitable heating medium or a consumer via the secondary medium, it is possible in a simple manner if necessary, such as. B. in winter, when the heating power drops due to the decrease in regenerative energies for feeding the latent heat storage, the storage by conventional energy sources reheat.
  • the secondary medium quickly absorbs the heat and then transfers it to the latent storage medium, which itself absorbs and stores the heat slowly due to its inertia.
  • the secondary medium is immediately available for consumption at the desired temperature and at the same time the memory is fed, so that optimal use of the heat supplied is guaranteed at all times.
  • the heat transfer medium can expediently expand into a compensating container communicating with the inner storage container, so that the entire volume of the storage unit can be used for heat storage despite the volume changes occurring in the latent storage medium and the heat transfer medium. Furthermore, a system can be operated in a closed manner, so that environmental influences, in particular water, do not adversely affect its operation.
  • a level indicator is preferably used to determine the degree of saturation of the latent heat store, which is usually arranged in the expansion tank.
  • the storage capacity is known at all times. This is important because reheating with electricity or other heat sources, such as a charcoal stove, must not lead to the full use of the storage capacity, because otherwise there would not be enough capacity for solar system operation and this would remain unused, which is for energy and ecological reasons is undesirable.
  • the heat supply and / or the removal in or from the inner storage container is regulated via the fill level indicator. Then the heat supply is controlled directly via the saturation level of the system. This is thus in a simple manner. B. by a swimmer who actuates a switch at a certain swimming height, which switches off the "external" heat supply, possible. This procedure can also limit the maximum possible charging or discharging of the memory. Depending on the latent storage medium used, the memory may not exceed or fall below certain temperatures, since otherwise the latent storage medium may be damaged.
  • a heat transfer medium such as in particular oil
  • oil is used in order to ensure good heat transfer from or to the latent storage medium.
  • the oil is pumped through the latent storage medium and absorbs the heat or distributes it more evenly.
  • Another object of the invention is therefore to achieve an optimization of the storage capacity of a latent heat storage regardless of the structure.
  • the state of charge or degree of saturation of the memory can be determined via the fill level of the heat transfer medium, which is displaced when the volume changes, so that a fill level indicator is preferably provided. This is preferably arranged on the expansion tank.
  • the supply of heat in the inner storage tank can be regulated via the fill level display. This can be done, for example, simply by means of a pressure meter or a level meter, such as a float.
  • the heat transfer medium can then expediently expand into a compensating container communicating with the inner storage container, so that the entire volume of the storage unit can be used for heat storage despite the volume changes occurring in the latent storage medium and the heat transfer medium. Furthermore, a system can be operated in a closed manner, so that environmental influences, in particular water, do not adversely affect its operation.
  • a level indicator is preferably used to determine the degree of saturation of the latent heat store, which is usually arranged in the expansion tank.
  • the storage capacity is known at all times. This is important because heating with electricity or other heat sources, such as a charcoal stove, must not lead to the full utilization of the storage capacity, because otherwise insufficient capacity for the operation of the solar system would exist and this would remain unused, which is undesirable for energetic and ecological reasons.
  • the heat supply and / or the removal in or from the inner storage container is regulated via the fill level indicator. Then the heat supply is controlled directly via the saturation level of the system. This is thus in a simple manner, for. B. possible by a float, who actuates a switch at a certain swimming height, which switches off the "external" heat supply.
  • This method can also be used to limit the maximum possible charging or discharging of the memory. Depending on the latent storage medium used, the memory may not exceed or fall below certain temperatures, since otherwise the latent storage medium may be damaged.
  • the secondary medium is used both for loading and unloading the storage. Simultaneous loading and unloading, i.e. H. simultaneous feeding in of heat and dissipation of the heat to consumers cannot take place. This would require external means that switch the secondary medium depending on the operation. However, this is uneconomical because part of the heat from the solar system is lost when it is not used.
  • the conventional systems cannot release the stored heat to the water or secondary medium quickly enough during peak loads, such as occur, for example, when showering or filling bathtubs. As a result, the water is not heated evenly and there are undesirable temperature fluctuations for the consumer.
  • a further object of the invention is therefore to provide a latent heat store which can be used simultaneously for heating purposes and for hot water supply, bypassing or reducing the inertia, and yet has a simple structure.
  • the storage container and the secondary medium then take place continuously via the wall of the inner storage container, which is in contact with the secondary medium. Due to the large volume of the secondary medium, sufficient warm secondary medium is always available. The large surface of the outside of the inner storage container heats up the secondary medium quickly and, due to its lower density, rises for removal. Water is particularly suitable as the secondary medium.
  • the heat exchanger is preferably arranged above the latent heat store and the hot secondary medium is fed in approximately perpendicularly from the upper region of the outer storage tank.
  • the cooled secondary medium also runs approximately vertically, but in the lower region of the outer storage container.
  • the external heat exchanger can thus be operated by means of gravity, since the hot secondary medium rises due to its lower density and falls over the outlet after its heat has been released. Pump operation is also possible.
  • the external heat exchanger is a tubular heat exchanger and it comprises, for example, at least one pipe coil through which process water flows for heating. Then a good heat exchange is possible.
  • FIG. 1 shows a schematic view of an embodiment of a latent heat store according to the invention with external connection
  • FIG. 2 shows a further embodiment of a latent heat store corresponding to FIG. 1 with a different external connection
  • FIG. 3 shows a schematic representation of a storage battery using a plurality of latent heat stores according to the invention
  • Fig. 4 shows a longitudinal section through the external heat exchanger from Fig. 1 and
  • Fig. 5 shows a cross section through the external heat exchanger line l-l
  • the latent heat store consists of an inner storage container 1 which is filled with a latent storage medium (not shown) and a heat transfer medium (also not shown).
  • the preferably used latent storage medium sodium acetate offers an ideal melting temperature. It melts at 58.5 ° C and cools, for example, from 63.5 ° C to 48.5 ° C during the transition from the liquid to the solid state, the usable heat content being approx. 100 kWh / m 3 .
  • the proportion of latent heat is around 75%.
  • water stores a heat quantity of only 17.4 kWh / m 3 , since it does not change its physical state in this temperature range. This means that up to five times the capacity is achieved.
  • the heat transfer medium is, for example, white oil, which penetrates the latent storage medium and thus for an almost 100 percent heat exchange between see the two substances and accelerates the heat absorption or release.
  • the inner storage container 1 is completely surrounded by an outer storage container 2, in which there is secondary medium, such as water. This means that the inner storage container 1 hangs freely in the outer storage container 2 and is only connected to it in the upper region via the respective edge zones.
  • the outer storage container 2 also simultaneously represents the housing of the latent heat store. Not shown in FIG. 1, but normally present, is an insulating sleeve surrounding the latent heat store 100 for better thermal insulation.
  • the latent heat store 100 as well as its inner and outer storage containers have a substantially cylindrical shape, which is rounded both above and below. To set up the device it has on the
  • the latent heat storage device 100 On its upper side, the latent heat storage device 100 has a flanged cover 4, which is provided with several openings for connections to be described.
  • a heat exchanger 5 projecting from top to bottom into the inner storage container 1 is arranged approximately in the middle.
  • the heat exchanger consists of the actual heat exchanger tube 12, which - viewed from the top downward - initially extends approximately vertically through the housing cover 4, in order to then wind downward in a coil-like manner.
  • the heat exchanger tube 12 extends vertically upward approximately parallel to the first approximately vertical region through the cover 4.
  • the heat exchanger 5 is flowed through by a further secondary medium which flows through the line 9 in the direction of the arrow into the heat exchanger and after flowing through the coil-shaped area leaves the heat exchanger via line 10.
  • a thermometer 11 is attached to line 10. With the secondary medium, which ches flows through the heat exchanger 5, it can also be water.
  • the secondary medium heated, for example, by regenerative energies therefore flows through the line 9 into the heat exchanger 5 and gives in
  • a corresponding line 7 for the cold water supply is provided in its lower region.
  • the cold water enters the heat accumulator in the direction of the arrow below and is heated by the latent storage medium in the outer storage container 2 via the outer wall of the storage container 1. Due to its changing density, the warm water rises and can leave the heat accumulator 100 via line 6 at an upper connection.
  • the line 6 is provided with a valve 13 for flow control.
  • the heated water or secondary medium located in line 6 can now be used to supply various consumers.
  • heaters come into consideration. Then the heating water runs after flowing through the heating via line 7 back into the outer storage tank. This is particularly favorable in terms of energy, as is known that the temperatures of the heating flow and return differ only slightly.
  • hotter service water - as is required, for example, for bathing - is generated by means of an external heat exchanger 50.
  • This is via a feed line 51, which leads from the upper part of the outer storage container 2 into the heat exchanger 50, and with a corresponding return line 52, which leads the secondary medium cooled in the heat exchanger 50 back into the lower region of the outer storage container 2 of the latent heat store 100, connected.
  • the heat exchanger 50 works according to the countercurrent principle, for which cold water is supplied in its lower region via a line 53, which is then heated in the heat exchanger 50 on its way up by the secondary medium from the latent heat store and leaves the heat exchanger 50 via the hot water line 54.
  • the cooling secondary medium from the outer storage container 2 flows through the line 52 back into it, so that the difference in density means that a separate pump for operating the heat exchanger 50 can be dispensed with if necessary.
  • the secondary medium flowing back into the outer storage container 2, like the colder secondary medium entering via the supply line 7, is heated again via the inner storage container 1 on its way into the upper region of the outer storage container 2, as already described above.
  • the heat exchanger 50 is shown in detail in FIGS. 4 and 5. It has an essentially cylindrical casing 57 which is provided at the bottom with a rounded bottom 64 and at the top with a rounded cover 55. To vent the heat exchanger 50 is located approximately in the middle
  • the secondary medium supply pipe 51 is fastened to an approximately centrally arranged pipe 62 by means of a flange 61.
  • the tube 62 is located approximately along the longitudinal central axis of the cylindrical heat exchanger 50 and is open at its upper end. Radially offset to the outside is a tube 60 which is connected to the return line 52 for the secondary medium.
  • the cold water line 53 merges in the heat exchanger 50 into a tube 68 which is connected to a plurality of tube coils 59 via a plurality of circular openings 63 and extends approximately radially to the longitudinal center axis. The individual coils spiral upward within the heat exchanger 50, and then in a corresponding tube
  • the secondary medium fed into the heat exchanger by means of the line 51 rises in the central tube 62 and flows out of it in the direction of the arrows 66, 67 and flows around the coils 59 on its way down. It leaves the heat exchanger via the tube 60, which is connected to the return line 52, which leads the secondary medium back into the lower region of the outer storage container 2.
  • the heat exchanger 50 thus works on the countercurrent principle.
  • the cold water supplied in its lower region via the line 53 which winds upwards from below in the coils 59, is first heated in the lower region of the heat exchanger 50 by the colder secondary medium which has already cooled in the upper region of the heat exchanger 50. Then it rises further up through the pipes 59 and is washed there with the even warmer secondary medium. It then leaves the heat exchanger 50 through the holes 65 in the tube 69 via the line 54.
  • the secondary medium which cools down when the water is heated flows from the outer storage container 2 through the pipe 60 into the line 52 and back into the outer storage container due to its density difference.
  • the difference in density of the secondary medium means that a separate pump for operating the heat exchanger 50 can be dispensed with and gravity is sufficient for normal operation. In a particularly strong circulation of the secondary medium, however, a pump may be necessary.
  • an external pressure compensation container 70 is provided, as can be seen in FIG. 1, which is connected to the outer storage container 2 via a line 71.
  • a thermometer 72 and a shut-off valve 73 are located on line 71 to monitor its temperature, in order to separate the pressure compensating container 70 from the heat store, for example for maintenance purposes.
  • a manometer 74 is provided for monitoring the pressure prevailing on the line 71 or in the pressure compensating container 70 and, as a safety measure, an overpressure valve 76.
  • a line 81 which communicates with the inner storage tank 1 via a connection 82 and which is connected to a
  • Expansion tank 80 is connected.
  • the inner storage container 1 being completely filled with latent storage means or heat transfer oil, their volume changes can be allowed into the open without a breathing line.
  • the capacity per volume of the inner storage container 1 or of the entire latent heat store 100 is increased, since in the
  • the Line 81 is provided with a shut-off valve 83, a manometer 84 for pressure monitoring and a safety valve 86.
  • the pressure gauge 84 for pressure monitoring has the advantage that the pressure, which correlates with the filling level of the inner storage container, makes it possible to monitor the state of charge or the degree of saturation of the latent storage medium or the heat transfer oil.
  • the latent storage medium melts and thereby reduces its volume, so that there is little oil in the expansion tank 80. If the temperature drops, part of the latent storage medium changes into the solid phase, as a result of which its volume increases, so that part of the heat transfer oil is displaced into the expansion tank 80.
  • the pressure read on the manometer 84 also increases.
  • Suitable means can be used to regulate the heat input into the latent heat store 100 via the manometer 84 or other means for determining the fill level, such as simple floats. This is of particular importance for the case of post-heating to be described, since there must not be a complete heating of the latent storage medium, so that capacities are always available for the preferably solar-powered heating.
  • a comparable connection, which is led to the outside, can also be provided on the inner storage container 1.
  • the latent heat accumulator shown as a whole in FIG. 2, designated 200 corresponds essentially to that known from FIG. 1, so that corresponding reference numerals increased by 100 are used for identical parts.
  • the latent heat accumulator 200 differs essentially from the latent heat accumulator 100 only in that an external heating circuit 120 is connected to the outer storage container 2 for seasonal heating. This heating circuit 120 is necessary since the latent heat store according to the invention is preferably operated by means of solar systems.
  • the external heating circuit 120 comprises a line 121 which conducts the secondary medium from the outer storage container 2 to an electric heating element 123 and through an associated heating pot 124 for heating and then in turn leads back via a line 122 into the upper region of the outer storage container 2.
  • a pump 126 and a valve 125 for flow regulation are provided in the heating circuit for circulation.
  • a different number of shut-off valves or bypass lines can be provided in order to heating element or the heating pot without difficulty.
  • FIG. 3 shows a latent heat storage battery designated as a whole as 300, which is composed of four latent heat stores according to the invention
  • the storage battery 300 is used in particular for heating domestic hot water by means of regenerative energies.
  • the domestic water heating is carried out via the secondary medium heated in the outer storage tanks 402, 502, 602 and 702 by means of the external heat exchanger known from FIG. 1, of which only one heat exchanger 450 on the first latent heat store 400 is shown in FIG. 3 for reasons of clarity.
  • Corresponding heat exchangers are also arranged in the same way on the other latent heat stores.
  • the expansion tank 480 and the pressure expansion tank 470 are only shown on the first latent heat store 400.
  • Corresponding devices are also available on the other heat stores. It would also be conceivable to connect the expansion tanks or pressure expansion tanks together to form a unit.
  • An external heating circuit 720 is connected to the fourth latent heat store 700 and serves to heat the secondary medium in the outer storage container 702 if the regenerative energies are not sufficient.
  • Such external heating circuits can also be attached to the other latent heat stores 400, 500 and 600, or it is possible, analogously to the expansion tanks, to carry out a common external heating device for all four latent heat stores.
  • the latent heat stores 400 In the exemplary embodiment shown, the latent heat stores 400,
  • the heat originating from the regenerative energies is transferred via line 309 by means of the secondary medium first introduced into the first heat exchanger 405 in the first latent heat store 400 and emerges from the latter after a first release of heat via the line 310 and is then guided into the heat exchanger 505 of the latent heat store 500 in order to in turn further release its heat there. Subsequently, the heat exchanger 605 of the latent heat store 600 is supplied and finally the heat exchanger 705 of the latent heat store 700.
  • Solar energy is preferably used as regenerative energy.
  • This solar energy heats up a heat transfer medium in a collector K.
  • the collector system is provided with a pressure expansion tank 320 and a circulation pump 321. There are also a number of throttle valves, shut-off valves, pressure relief valves and control gauges or thermometers.
  • the collector system is operated with a closed circuit and transfers its heat to the secondary medium in front of a heat exchanger 323. The heat transfer medium is therefore pumped in a circuit via lines 324 and 322.
  • the heated secondary medium flows from dei ⁇ collector K via a line 317 through a throttle valve and a check valve, after which it arrives in a pump which conveys it into a collecting line 315.
  • the latent heat storage battery 300 is supplied by the collecting line 315 via the line 309.
  • the secondary medium heated by solar energy which is normally water, can be used without going through the storage battery or for heating the building. Normal wall heating H or floor heating FH can be used.
  • several heating circuits provided with throttle valves, check valves, shut-off valves and pumps lead from the manifold 315 to the corresponding heaters H and FH.
  • the temperature of the supply and return flow of a heating system differs only slightly, so that the return flow from the heating systems is partly fed directly back into this circuit. The remaining part is fed into the busbar 314 and again exposed to the regenerative heat sources.
  • heat pumps W or charcoal ovens 0 can be connected to the corresponding busbars 314 or 315 in order to supply the heating or the latent heat storage battery 300.
  • W and the furnace O are also connected to the busbar 315 via throttle valves, check valves and pumps, so that the secondary medium in the corresponding heat source is heated as required by a control unit (not shown) and can be supplied to the system.
  • an external electrical heating unit E can be connected to the busbar 315 in order to regenerate the system, for example by means of low tariff current, in the same way as in the case of the external heating circuit 720, in the event of a failure of the regenerative heat sources or an insufficient supply by this heat to provide with heat.
  • the latent heat store according to the invention and its external additives can therefore be used in a wide variety of ways in a wide variety of systems and different situations and requirements.

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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)

Abstract

L'invention concerne un accumulateur de chaleur latente (100), comprenant un premier réservoir (1), rempli d'un agent d'accumulation de chaleur latente et de préférence d'un agent caloporteur, et un deuxième réservoir (2), rempli d'un agent secondaire. Un échangeur thermique (5) pour chauffer ou refroidir l'agent d'accumulation se trouve dans le premier réservoir (1), disposé à l'intérieur du deuxième réservoir (2), qui est à l'extérieur. La face extérieure du réservoir intérieur est en liaison avec l'agent secondaire. La capacité de stockage est ainsi optimisée et l'inertie de l'accumulateur de chaleur latente (100) est réduite, la construction restant simple.
PCT/EP2001/008974 2000-08-03 2001-08-02 Accumulateur de chaleur latente WO2002012814A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DE10037930 2000-08-03
DE10037930.3 2000-08-03
DE10108150A DE10108150A1 (de) 2000-08-03 2001-02-20 Latentwärmespeicher
DE10108152.9 2001-02-20
DE10108152A DE10108152A1 (de) 2000-08-03 2001-02-20 Latentwärmespeicher
DE10108151.0 2001-02-20
DE10108150.2 2001-02-20
DE10108151 2001-02-20

Publications (1)

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WO2002012814A1 true WO2002012814A1 (fr) 2002-02-14

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PCT/EP2001/008974 WO2002012814A1 (fr) 2000-08-03 2001-08-02 Accumulateur de chaleur latente

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006114069A1 (fr) * 2005-04-27 2006-11-02 Pro Ma Co Gmbh Unite de rotation destinee a effectuer une rotation homogene de conduites d'aspiration d'un accumulateur de chaleur latente et dispositif de fusion fonctionnant automatiquement sur la base des proprietes rheologiques
EP2273226A1 (fr) * 2009-03-09 2011-01-12 Rawema Countertrade Handelsgesellschaft mbH Système d'accumulation de chaleur
AT514233A1 (de) * 2013-04-19 2014-11-15 Robert Laabmayr Wärmespeicher
WO2014191778A1 (fr) * 2013-05-31 2014-12-04 Sunamp Limited Ensembles batteries thermiques et système de surveillance de ce dernier
WO2019080976A1 (fr) * 2017-10-23 2019-05-02 Suntherm Aps Système de chauffage à base de pcm
EP4130631A1 (fr) * 2021-08-05 2023-02-08 Abb Schweiz Ag Procédé et contrôleur pour tester un dispositif de refroidissement à deux phases, programme informatique et support lisible par ordinateur

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FR2582787A1 (fr) * 1985-06-04 1986-12-05 Vironneau Pierre Source d'energie calorifique a accumulation
EP0999424A2 (fr) * 1998-11-04 2000-05-10 Baltimore Aircoil Company, Inc. Eléments d'échange de chaleur pour appareil de stockage de chaleur
DE19953113C1 (de) 1999-11-04 2000-12-07 Alfred Schneider Latentwärmespeicher

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US4220196A (en) * 1977-05-05 1980-09-02 U.S. Philips Corporation Heat storage device
DE2744468A1 (de) * 1977-10-03 1979-04-05 Philips Patentverwaltung Vorrichtung zum messen und gegebenenfalls regeln des ladungsgrades von latentwaermespeichern
US4233960A (en) * 1978-07-21 1980-11-18 Johnson Steven A Heat storage apparatus and method
US4371028A (en) * 1979-01-22 1983-02-01 Effex Innovation A/S Heat storage device
DE3011840A1 (de) * 1980-03-27 1981-10-08 Stefan Nau Gmbh & Co, 7405 Dettenhausen Heizungsanlage zum ausnutzen der umweltwaerme und dazugehoeriger erdwaermeabsorber
DE3236319A1 (de) * 1981-11-04 1983-09-01 Michael 4150 Krefeld Laumen Energiespeicher zur speicherung von latenter waerme in chemisch reagierenden speichermedien oder speichermedien mit phasenwechsel
FR2582787A1 (fr) * 1985-06-04 1986-12-05 Vironneau Pierre Source d'energie calorifique a accumulation
EP0999424A2 (fr) * 1998-11-04 2000-05-10 Baltimore Aircoil Company, Inc. Eléments d'échange de chaleur pour appareil de stockage de chaleur
DE19953113C1 (de) 1999-11-04 2000-12-07 Alfred Schneider Latentwärmespeicher

Cited By (13)

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Publication number Priority date Publication date Assignee Title
WO2006114069A1 (fr) * 2005-04-27 2006-11-02 Pro Ma Co Gmbh Unite de rotation destinee a effectuer une rotation homogene de conduites d'aspiration d'un accumulateur de chaleur latente et dispositif de fusion fonctionnant automatiquement sur la base des proprietes rheologiques
RU2540028C2 (ru) * 2009-03-09 2015-01-27 Равема Каунтертрейд Хандельсгезельшафт Мбх Система для сохранения тепла, а также здание или мобильный модуль с указанной системой
WO2010102787A3 (fr) * 2009-03-09 2011-02-17 Rawema Countertrade Handelsgesellschaft Mbh Système d'accumulateurs thermiques
CN102348950A (zh) * 2009-03-09 2012-02-08 拉维玛易货贸易有限责任公司 储热***
EP2273226A1 (fr) * 2009-03-09 2011-01-12 Rawema Countertrade Handelsgesellschaft mbH Système d'accumulation de chaleur
AT514233A1 (de) * 2013-04-19 2014-11-15 Robert Laabmayr Wärmespeicher
WO2014191778A1 (fr) * 2013-05-31 2014-12-04 Sunamp Limited Ensembles batteries thermiques et système de surveillance de ce dernier
CN105358930A (zh) * 2013-05-31 2016-02-24 苏纳珀有限公司 热蓄能器组件及其监控***
US10317146B2 (en) 2013-05-31 2019-06-11 Sunamp Limited Heat battery assemblies and monitoring system therefor
US11428477B2 (en) 2013-05-31 2022-08-30 Sunamp Limited Heat battery assemblies and monitoring system therefor
WO2019080976A1 (fr) * 2017-10-23 2019-05-02 Suntherm Aps Système de chauffage à base de pcm
EP4130631A1 (fr) * 2021-08-05 2023-02-08 Abb Schweiz Ag Procédé et contrôleur pour tester un dispositif de refroidissement à deux phases, programme informatique et support lisible par ordinateur
WO2023011780A1 (fr) * 2021-08-05 2023-02-09 Abb Schweiz Ag Procédé et régulateur d'essai de dispositif de refroidissement à deux phases, programme informatique et support lisible par ordinateur

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