EP4215860A1 - Accumulateur de chaleur latente, système d'alimentation en énergie doté d'au moins un accumulateur de chaleur latente et procédé de fonctionnement d'un système d'alimentation en énergie doté d'au moins un accumulateur de chaleur latente - Google Patents

Accumulateur de chaleur latente, système d'alimentation en énergie doté d'au moins un accumulateur de chaleur latente et procédé de fonctionnement d'un système d'alimentation en énergie doté d'au moins un accumulateur de chaleur latente Download PDF

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Publication number
EP4215860A1
EP4215860A1 EP22206731.6A EP22206731A EP4215860A1 EP 4215860 A1 EP4215860 A1 EP 4215860A1 EP 22206731 A EP22206731 A EP 22206731A EP 4215860 A1 EP4215860 A1 EP 4215860A1
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EP
European Patent Office
Prior art keywords
heat
heat exchanger
module
exchanger unit
transfer fluid
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.)
Pending
Application number
EP22206731.6A
Other languages
German (de)
English (en)
Inventor
Daniel Eisenmann
Damian Skoruppa
Heiko LÜDEMANN
Michael Huhn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Viessmann Climate Solutions SE
Original Assignee
Viessmann Climate Solutions SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Viessmann Climate Solutions SE filed Critical Viessmann Climate Solutions SE
Publication of EP4215860A1 publication Critical patent/EP4215860A1/fr
Pending legal-status Critical Current

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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/18—Hot-water central heating systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/219—Temperature of the water after heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/223—Temperature of the water in the water storage tank
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/227—Temperature of the refrigerant in heat pump cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/238—Flow rate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/305—Control of valves
    • F24H15/315—Control of valves of mixing valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/305—Control of valves
    • F24H15/32—Control of valves of switching valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/375—Control of heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • F24H4/04—Storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
    • F24H7/04—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
    • F24H7/0408—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply
    • F24H7/0433—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply the transfer medium being water
    • F24H7/0441—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply the transfer medium being water with supplementary heating means
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0081—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by a single plate-like element ; the conduits for one heat-exchange medium being integrated in one single plate-like element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/006—Preventing deposits of ice
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/12—Heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/16—Waste heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/10—Heat storage materials, e.g. phase change materials or static water enclosed in a space
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
    • F24D3/1066—Distributors for heating liquids
    • 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
    • F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks

Definitions

  • the invention concerns
  • Latent heat storage devices for storing sensible and latent heat are generally known, particularly in the form of ice storage devices.
  • a problem with such ice stores is that the storage medium, water, solidifies when heat is removed and increases in volume. This entails the risk that the storage container as well as heat exchangers arranged in the storage medium will be damaged or even destroyed.
  • the formation of ice hinders the thermal exchange between the storage medium and the heat exchanger.
  • a latent heat storage device in the form of an ice storage device with a heat-insulated storage container in a building basement is known.
  • the bottom of the ice bank is covered with a flat heat exchanger in the form of a ribbed sheet, on which pipes of a cooling device and hot water circulation are placed.
  • a flat heat exchanger in the form of a ribbed sheet on which pipes of a cooling device and hot water circulation are placed.
  • ice is continuously formed in recesses in the heat exchanger and detached by the hot water circulation.
  • the EP 0 019 235 A1 discloses a latent heat store in the form of an ice store, the bottom of the container forming the evaporator of a heat pump.
  • the ice that forms on the evaporator is periodically defrosted by supplying heat from an external heat source or switching the heat pump.
  • a latent heat store in the form of an ice store which has a cooling plate on the bottom of the storage container, which is connected to a heat pump.
  • the egg layer that forms on the cooling plate when heat is withdrawn is detached by briefly applying heat and in turn enables heat to be withdrawn via the cooling plate.
  • the heat extraction can be adjusted periodically.
  • a thermostat control is superordinate to the time period, which terminates the defrosting process when a certain outlet temperature of the heat transfer fluid is reached and switches back to heat extraction.
  • the brine outlet temperature is determined while the ice layer is thawing. If the brine outlet temperature is below the set value, either hot gas defrosting takes place or the heat pump is switched off as a whole and warm brine is fed to the cold plate from a heat accumulator.
  • a latent heat store in the form of an ice store is known, in which individual plate heat exchangers are placed in the direction of the vertical axis at the bottom of the storage container.
  • the connections for supplying and removing the heat transfer fluid are arranged on the side edges of the plates, which are separated from the surface of the plates with a barrier structure.
  • the plate heat exchangers are fully submerged in water and the barrier structures prevent the ice sheets forming on the plate surfaces from growing into areas below the inlet and outlet connections, viewed in the direction of gravity. Likewise, a form fit with the forming ice sheets is prevented, which further facilitates the detachment of the ice.
  • the EP 0 004 552 A1 discloses a latent heat store in the form of an ice store with slats arranged vertically in the storage container, on which slabs of ice can form on both sides, which grow together at the free end of the slats. Heat is supplied to the lamellae for detachment.
  • an evaporator tube is arranged at the base of the fins, which forms part of the evaporator of a heat pump and has a refrigerant, for example a fluorocarbon, flowing through it.
  • a line through which a heat transport fluid flows is arranged at the base of the lamellae.
  • a storage is known in US 5,000,000 in which pieces of ice are stored in the storage container for refrigeration purposes.
  • the memory is thermally insulated from the outside.
  • cooling element in the form of a flattened coiled tube is provided on both sides with an electrically conductive plate. Ice can form on the plate when heat is removed.
  • the plate is provided with electrical contacts. In order to detach the ice, the plate can be energized, whereby the plate heats up and the ice that has formed is detached.
  • the ice floats to the surface of the storage tank and can be removed from there when needed.
  • the water level in the bin is monitored to determine the amount of ice available in the storage bin.
  • One object of the invention is to provide a production-friendly latent heat storage device.
  • a further object of the invention is to provide an energy supply system which is easy to manufacture and has at least one latent heat accumulator.
  • a further object of the invention is to provide a method for operating such a power supply system.
  • a latent heat storage device for providing heat and cold for a consumer, with a storage container for accommodating a storage medium in an interior space and a heat exchanger unit arranged therein, which is in thermal contact with the storage medium and through which a heat transfer fluid flows in the operating state.
  • the heat exchanger unit has heat exchanger plates, each of which has the heat transfer fluid flowing through it.
  • the heat exchanger plates of the heat exchanger unit form at least one compact module.
  • the heat exchanger plates of the at least one module are arranged spaced apart from one another at a first desired distance transversely to a vertical axis of the storage container.
  • the at least one module is arranged with its heat exchanger plates at a distance from the tank bottom and from the tank wall.
  • the at least one module, with its heat exchanger plates along the vertical axis takes up at most half of a target level of the storage medium in the interior of the storage container.
  • the latent heat store is in particular a component of an energy supply system for supplying a consumer with thermal energy, in particular with heat and cold.
  • the storage medium can in particular be water.
  • an energy supply system with such a latent heat store can be designed and used as a long-term or short-term/high-performance store.
  • the latent heat accumulator is preferably dimensioned in such a way that it can supply a consumer in the form of a residential building, in particular a single-family house or two-family house, with heat in winter and cold in summer.
  • the latent heat accumulator advantageously interacts in an energy supply system with a heat pump, which receives the heat transfer fluid from the heat exchanger unit on its primary side.
  • the heat exchanger unit with one or more modules with heat exchanger plates can optionally also be used for a regeneration system as an absorber, energy fence, etc.
  • the storage container is advantageously arranged in the ground.
  • the latent heat accumulator is favorably in thermal contact with the soil surrounding it.
  • the heat exchanger unit can be fixed to the floor in such a way that there is a gap of 15-20 cm between the bottom plate and the underside of the heat exchanger unit. This space can be used for cable routing. In addition, it can be ensured in this way that the ground under the storage tank does not freeze and that any water present temporarily does not freeze and thus cannot exert any forces on the storage tank
  • the storage tank can already be equipped with the heat exchanger unit by the manufacturer, ie prefabricated.
  • the industrial production of the heat exchanger unit ensures the required quality and reduces complex and expensive manual work on the construction site. In addition, the assembly time on site is reduced.
  • the modular design of the heat exchanger unit allows the storage container to be equipped with a heat exchanger unit, which comprises one, two or more modules, as required.
  • the number of modules can be adjusted according to the expected energy requirements of the consumer and the general conditions at the consumer's place of use.
  • the prefabricated storage container can be designed in particular for road transport and can therefore be easily transported to the consumer. All that needs to be provided is a pit for receiving the storage container. Elaborate construction work, such as pouring the storage tank at the place of use, labor-intensive assembly of the extraction heat exchanger and the like can be omitted.
  • the storage container can be filled with the storage medium, for example water, on site. Likewise, the heat transfer fluid can be filled into the heat exchanger unit on site, or this can already be done during installation in the storage container.
  • the heat exchanger plates can be made of aluminium, stainless steel or plastic (PE).
  • PE plastic
  • the heat exchanger unit and all lines are preferably filled with a glycol/water mixture, also known as brine.
  • lines for the inlet and outlet to the heat exchanger plates can be thermally insulated. It is thus possible to avoid an uncontrolled build-up of ice above the heat exchanger unit inside the storage container.
  • one advantage of the modular design of the heat exchanger unit is the possibility of industrial prefabrication and the quality assurance associated therewith, as well as the lower outlay in terms of material use and assembly.
  • the use of self-contained modules for the heat exchanger unit simplifies the effort for the simulation and design of the energy supply systems with such latent heat storage devices at the manufacturer.
  • the energy supply system can advantageously be used worldwide for climate-friendly heating and cooling applications, regardless of many years of experience.
  • the heat exchanger plates are arranged with their intended end faces facing the tank bottom on a pallet, in particular a plastic pallet, similar to a so-called Euro pallet.
  • the pallet can be welded to the heat exchanger plates or firmly connected in some other suitable manner, and in this way forms a stable module that can therefore be transported and stored.
  • the at least one module can have a distribution line and a collecting line.
  • fluid inlets of the heat exchanger plates can open into the distribution line and fluid outlets of the heat exchanger plates can open out into the collecting line for the heat transfer fluid.
  • the heat exchanger plates can be connected in parallel in terms of flow. If two or more modules are to be installed in the latent heat storage device, they can simply be interconnected via their distribution lines and collection lines.
  • distribution lines and collecting lines of several modules can be connected together in terms of flow, in particular in parallel in terms of flow, in the storage container.
  • the number of modules can easily be expanded as required.
  • the at least one module with its heat exchanger plates along the vertical axis can occupy at most one third of the target level of the storage medium.
  • the free volume of the storage medium in the storage tank above the heat exchanger unit can accommodate those ice sheets that have been detached from the heat exchanger unit and that are floating upwards in the storage tank. In this case, no pressure is exerted on the storage container by the floating ice, so that an explosive effect in the event of ice formation can advantageously be avoided.
  • the at least one module with its heat exchanger plates can have an area of at least 2 m 2 , in particular up to 2.5 m 2 , for heat extraction.
  • each panel has a surface area of approx. 2 to 2.5 m 2 .
  • a module of a heat exchanger unit can favorably consist of 8 to 12 heat exchanger plates.
  • a module of a heat exchanger unit with such dimensions is sufficient to supply a single-family house with an area to be heated of approximately 150 m 2 , for example in Central Europe, in order to supply it with heat and possibly cold throughout the year. Should more capacity be required, the capacity of the heat exchanger unit can be increased by installing additional modules and connecting them together.
  • the module with its heat exchanger plates can have an envelope enclosing the module with a volume of at most 20%, preferably 15%, particularly preferably at most 10% of the volume of the storage medium.
  • the module can be cuboid, for example, so that the envelope is a cuboid.
  • the heat exchanger unit is installed in the lower area of the storage tank and only takes up a small volume of the storage tank, the space above the heat exchanger unit can be used as an "ice store" for the ice sheets that are separating and drift to the water surface.
  • the storage tank and the construction of the heat exchanger unit do not have to absorb any relevant mechanical forces and can therefore be provided easily and cheaply.
  • the extraction capacity of the heat exchanger unit remains almost constant and the overall system operates at an advantageous level of efficiency.
  • headers and headers of the heat exchanger unit are located outside of areas where ice may occur.
  • the at least one module with its heat exchanger plates can have a distance from the container bottom that is dimensioned such that the storage medium within the distance is ice-free even in the intended coldest operating state of the at least one module. If the heat exchanger plates of the module are arranged on a pallet, the distance essentially corresponds to that of the end faces of the heat exchanger plates facing the tank bottom.
  • the storage container can be prefabricated with the at least one module. This simplifies the transport logistics to the consumer and the on-site assembly work.
  • the storage container can be thermally coupled to its surroundings.
  • the storage container can be arranged in the ground in the operating state.
  • an energy supply system with at least one latent heat store is proposed.
  • the latent heat accumulator for providing heat and cold for a consumer is provided with a storage container for accommodating a storage medium in an interior space and a heat exchanger unit arranged therein, which is in thermal contact with the storage medium and through which a heat transfer fluid flows in the operating state.
  • the heat exchanger unit has heat exchanger plates, each of which has the heat transfer fluid flowing through it.
  • the heat exchanger plates of the heat exchanger unit are designed as at least one module.
  • the heat exchanger plates of the at least one module are arranged spaced apart from one another at a first desired distance transversely to a vertical axis of the storage container.
  • the at least one module is arranged with its heat exchanger plates at a distance from the tank bottom and from the tank wall.
  • the at least one module, with its heat exchanger plates along the vertical axis, takes up at most half of a target level of the storage medium in the interior.
  • the heat exchanger unit is coupled to a heat pump, which at least temporarily extracts heat from the storage medium via the heat exchanger unit, and to a regeneration system, which at least temporarily provides heat to the storage medium via the heat exchanger unit, and to a control and/or regulation unit, which at least controls or regulates cooling and heating of the heat exchanger unit.
  • the heat exchanger unit can be connected to the heat pump and the regeneration system via a hydraulic module, which includes system hydraulics and a control and/or regulating unit.
  • the regeneration system can advantageously have a roof absorber and/or an energy fence.
  • further heat generators can also be integrated, which can support the regeneration, i.e. the warming up, of the heat exchanger unit. Both sensible and latent energy can be extracted from the heat exchanger unit via the heat pump.
  • the heat exchanger unit can optionally also be used for a regeneration system as an absorber, energy fence, etc.
  • Renewable energy can be supplied to the latent heat storage device via the regeneration system and/or other heat generators.
  • a consequence of the heat extraction is that ice plates form on the surfaces of the heat exchanger plates, for example up to 30 mm.
  • the heat exchanger unit can be switched from extraction to regeneration. The result is a detachment of the ice sheets from the surfaces of the heat exchanger plates. Due to the force of gravity, the pieces of ice float to the surface of the storage medium, in particular the water surface, and the heat exchanger plates are again in contact with the storage medium (usually water). The icing process and thus the use of crystallization heat or the build-up of additional cooling capacity can start again.
  • the thickness of the ice sheets can be defined by influencing the regeneration time.
  • an emergency circuit can be provided that prevents the ice sheets from becoming too thick and growing together. In this way it can be achieved that no undesired pressure forces act within the heat exchanger unit.
  • a changeover device with at least one changeover valve for influencing a flow direction of the heat transfer fluid, at least one temperature sensor for detecting the temperature of the heat transfer fluid and at least one volume flow sensor for detecting a heating request and/or cooling request from the heat pump can be arranged between the latent heat storage device, heat pump and regeneration system.
  • the heat transfer fluid can be routed selectively between the components as required.
  • At least one mixing valve can be arranged in a flow connection between latent heat storage device, heat pump and regeneration system, with which heat transfer fluid from the regeneration system and heat transfer fluid from the heat exchanger unit are mixed.
  • the mixing ratio can be set in such a way that the heat transfer fluid is fed to the heat pump on the primary side at a temperature that is favorable for heat pump operation.
  • a first operating mode a first circuit of the heat transfer fluid can be formed between the latent heat storage device and a primary side of the heat pump.
  • a second circuit of the heat transfer fluid can be formed between the regeneration system and the heat pump.
  • a third circuit of the heat transfer fluid can be formed between the regeneration system and the heat exchanger unit of the latent heat accumulator.
  • the heat exchanger unit extracts heat from the storage medium of the latent heat storage device and cools it down accordingly, with the appropriately temperature-controlled heat transfer fluid being fed to the heat pump for heating purposes or possibly also for cooling purposes.
  • the regeneration system extracts heat from the environment, for example, with the appropriately tempered heat transfer fluid being fed to the heat pump for heating purposes or possibly also for cooling purposes.
  • the heat exchanger unit is heated by the warmer heat transfer fluid of the regeneration system and the storage medium as a whole is heated. If necessary, ice that is present on the heat exchanger plates is defrosted. The latter can in particular take place intermittently during an extraction period during which the latent heat store is cooled by heat extraction.
  • heat transfer fluid from the heat exchanger unit and from the regeneration system can be fed mixed to the primary side of the heat pump in a further operating mode.
  • the heat transfer fluid can be supplied to the heat pump on the primary side at a mixing temperature that is favorable for heat pump operation.
  • the mixing ratio can be adjusted as required.
  • the latent heat storage device, heat pump and regeneration system can be connected to a hydraulic module which has the switching device with the at least one switching valve, the at least one temperature sensor and the at least one volume flow sensor.
  • the hydraulic module can expediently also have conveying means for the heat transfer fluid.
  • the heat pump can have its own pump on the primary side.
  • the hydraulic module is advantageously designed as a self-sufficient device with its own control and/or regulation unit, which uses the signals from the at least one volume flow sensor and the temperature signals of the heat transfer fluid in the hydraulic module to independently actuate the switching device and, if necessary, the mixing valve in order to carry out the heating and, if necessary, cooling requirements of the heat pump or the thermal regeneration of the heat exchanger unit in the latent heat accumulator or also a thermal regeneration of the regeneration system.
  • the latent heat accumulator, heat pump and regeneration system only need to be fluidly connected to the hydraulic module.
  • the usual control and/or regulation unit of the heat pump does not have to be adapted to the hydraulic module and its regulation or control.
  • a method for operating an energy supply system with at least one latent heat store is proposed, the latent heat store providing heat and cold for a consumer via a heat exchanger unit which is in thermal contact with the storage medium and through which a heat transfer fluid flows in the operating state.
  • the heat exchanger unit is coupled with a heat pump, which at least temporarily extracts heat from the storage medium via the heat exchanger unit, and with a regeneration system, which at least temporarily provides heat to the storage medium via the heat exchanger unit, and with a control and/or regulation unit, which at least controls or regulates cooling and heating of the heat exchanger unit.
  • the heat exchanger plates of the heat exchanger unit are defrosted depending on an exit temperature of the heat transfer fluid at or after exit from the heat exchanger unit, as soon as the exit temperature reaches or falls below a preset temperature threshold.
  • the latent heat store in particular ice energy store, is equipped with one or more modules of the heat exchanger unit that are connected to one another, each consisting of several heat exchanger plates, which enable heat to be extracted from the storage medium and the latent heat store or the storage medium of the latent heat store to be regenerated, i.e. to heat it up.
  • a hydraulic module with system hydraulics and a control and/or regulation unit for the heat source management is favorably present.
  • the system hydraulics include all lines for the heat transfer fluid as well as pumps, sensors and actuators for operating the hydraulic module.
  • the control and/or regulation unit can decide which energy source is to be used or when the latent heat accumulator is to be regenerated by comparing the temperatures in the heat transfer fluid circuits.
  • crystallization energy becomes usable and ice plates several centimeters thick form on the surfaces of the heat exchanger plates.
  • warm heat transfer fluid, in particular brine from the regeneration system or other existing heating circuits flows through the heat exchanger plates.
  • the ice plates detach from the heat exchanger plates and drift to the water surface due to gravity.
  • the regeneration can also take place via an electric heating element.
  • the energy introduced in this way is used to the full and is retained as sensible heat. Determining the ice thickness is of great importance for successful system operation.
  • the ice thickness on the heat exchanger plates is determined via the change in the temperature of the heat transfer fluid at the outlet of the heat transfer fluid from the heat exchanger unit, which can advantageously be recorded in the hydraulic module. This avoids complex wiring of sensors in the heat exchanger unit or the latent heat storage device.
  • the thermal regeneration of the heat exchanger unit can take place via absorbers of the regeneration system, such as roof absorbers, energy fences and the like, existing heating circuits at the consumer, an electric heating element, in particular in the latent heat store, or other sources.
  • absorbers of the regeneration system such as roof absorbers, energy fences and the like, existing heating circuits at the consumer, an electric heating element, in particular in the latent heat store, or other sources.
  • an electric heating element in particular in the latent heat store, or other sources.
  • several such components can also be combined.
  • This process is controlled via the changing temperatures within the circuit of the heat transfer fluid.
  • the outlet temperature of the heat transfer fluid is measured in the hydraulic module as it exits the heat exchanger unit.
  • a temperature threshold for example a temperature in the range between -4°C and -8°C, the regeneration of the heat exchanger unit is activated for a certain period of time.
  • the heat exchanger unit is supplied with warm heat transfer fluid, in particular from the regeneration system, and/or the storage medium is heated, for example via an electric heating rod.
  • the exact end of the regeneration is also controlled via the outlet temperature of the heat transfer fluid recorded in the hydraulic module when it leaves the heat exchanger unit. As soon as this outlet temperature is above freezing again, the de-icing process can be ended.
  • the set temperature threshold of the heat transfer fluid from the heat exchanger unit defines a thickness of the ice plates formed on the heat exchanger plates.
  • a corresponding graphic can also be created for this purpose and stored in the control and/or regulation unit.
  • the temperatures at the inlet of the heat exchanger unit are not at least 4 K above the freezing point, an electric heating element can be activated.
  • the melting time can advantageously be only a few minutes, so that the heat exchanger unit is quickly available again for extracting heat from the storage medium.
  • the melting of the ice itself is energetically favorable, since the energy used is retained in the form of sensible heat in the latent heat storage system and can be used again later.
  • the heat extraction is only briefly interrupted by the melting of the ice.
  • the preset temperature threshold of the heat transfer fluid from the heat exchanger unit can be selected such that the thickness of ice on the heat exchanger plates of the at least one module is less than half the first target distance between the heat exchanger plates of the at least one module.
  • the temperature threshold can be selected in the range of -5°C and -9°C, preferably in the range of -4°C and -8°C. The thickness of the ice on the surface of the heat exchanger plates can be reliably inferred from the outlet temperature of the heat transfer fluid when it leaves the heat exchanger unit, without having to intervene in a module of the heat exchanger unit or the latent heat accumulator.
  • heat can be supplied until the outlet temperature reaches or exceeds at least 0.degree.
  • the heat extraction from the latent heat storage device is only briefly interrupted.
  • heat transfer fluid in a first operating mode, can flow in a first circuit between the latent heat storage device and a primary side of the heat pump, and in a second operating mode, heat transfer fluid can flow in a second circuit between the regeneration system and the heat pump, it being possible to switch between the first and second circuits depending on the operating conditions of the heat exchanger unit and/or the heat pump.
  • the heat pump receives heat transfer fluid in a favorable temperature range.
  • the heat exchanger unit is automatically de-iced when the outlet temperature reaches or falls below a temperature threshold and is again available for heat extraction from the storage medium.
  • heat transfer fluid can flow in a third circuit between the heat exchanger unit of the latent heat storage device and the regeneration system, which allows the storage medium to be heated and, in particular, ice to be thawed from the surface of the heat exchanger plates. It can be switched between the circuits depending on the operating conditions of the heat exchanger unit and/or the heat pump.
  • figure 1 illustrates in a schematic manner a power supply system 200 according to an embodiment of the invention
  • figure 2 shows a heat exchanger unit 40 that can be used advantageously in the energy supply system 200.
  • FIG. In this case, such a heat exchanger unit 40 will advantageously be installed in a latent heat accumulator 100 .
  • such a heat exchanger unit 40 can also be used in a regeneration system of the energy supply system 200 .
  • the energy supply system 200 includes a latent heat store 100.
  • the latent heat store 100 has a storage container 10 which is provided for receiving a storage medium 12 with latent heat.
  • the storage medium 12 is water, for example.
  • the latent heat storage serves as the first energy source.
  • a heat exchanger unit 40 is arranged in the storage medium 12, which is provided for the exchange of heat with the storage medium 12 and at least one module 50 ( figure 2 ), which has a heat transfer fluid 52 flowing through it during operation.
  • the module 50 is formed by a plurality of parallel and spaced apart heat exchanger plates 60 which extend parallel to the vertical axis 110 of the storage container 10 .
  • two or more such modules 50 ( figure 2 ) be interconnected and form the heat exchanger unit 40.
  • the heat transfer fluid 52 is, for example, brine or a glycol-water mixture or the like.
  • the energy supply system 200 also includes a heat pump 210, the primary side of which is fluidly connected to the heat exchanger unit 40 of the latent heat storage device 100, and a second energy source in the form of a regeneration system 220, for example in the form of a roof absorber and/or an energy fence. Furthermore, the energy supply system 200 includes a hydraulic module 1000 with the hydraulic system 300 and an associated open-loop and/or closed-loop control unit 350 which is connected to the hydraulic system 300 .
  • the system hydraulic system 300 fluidly connects the heat exchanger unit 40 of the latent heat storage device 100, the regeneration system 220 and the heat pump 210.
  • the heat pump 210 is coupled to the hydraulic module 1000 via a fluid interface 212, the heat exchanger unit 40 via a fluid interface 102, and the regeneration system 220 via a fluid interface 222, with the fluid interfaces 102, 212 , 222 each include connections for the entry and exit of heat transfer fluid 52 into or out of the components 100, 210, 220.
  • the heat pump 210 supplies a consumer 150, for example a detached house, with heat or, if required, with cooling.
  • a conveying means 214 is provided, for example, which conveys a heat transfer fluid from the secondary side of the heat pump 210 to the consumer 150 .
  • figure 2 shows a heat exchanger unit 40, as used in the latent heat storage device 100 in figure 1 can be used and which is in thermal contact with the storage medium 12 in the interior 14 of the storage container 10 and which has a heat transfer fluid 52 flowing through it in the operating state.
  • figure 3 shows a plan view of the module 50 of the heat exchanger unit 40.
  • In figure 4 are different distances related to the heat exchange unit 40 in the storage tank 10 ( figure 1 ) indicated.
  • the heat exchanger unit 40 has at least one module 50 with heat exchanger plates 60, each of which has the heat transfer fluid 52 flowing through it.
  • the heat exchanger plates 60 of the heat exchanger unit 40 are designed as a compact module 50 that can be interconnected with other modules 50 in the latent heat storage device 100 if required.
  • the heat exchanger unit 40 provides the primary side of the heat pump 210 with sensible and also latent heat from the latent heat store 100 .
  • the heat exchanger plates 60 in the module 50 are arranged at a distance from one another at a first desired distance 62 transversely to a vertical axis 110 of the storage container 10 .
  • the module 50 is arranged with its heat exchanger plates 60 at a distance from the tank bottom 16 and from the tank wall 18 .
  • the module 50 with its heat exchanger plates 60 along the vertical axis 110 occupies at most half of a target level 20 of the storage medium 12 in the interior 14 .
  • the module 50 has a distribution line 80 and a collecting line 90 , fluid inlets 64 of the heat exchanger plates 60 opening into the distribution line 80 and fluid outlets 66 of the heat exchanger plates 60 opening into the collecting line 90 for the heat transfer fluid 52 .
  • the heat exchanger plates 60 are connected in parallel in terms of flow. If two or more modules 50 are arranged in the latent heat accumulator 100, a common distribution line 80 and a common collecting line 90 can be present for all of them.
  • each module 50 can have its own distribution line 80 and its own collection line 90 .
  • the lines are expediently arranged in the ice-free area.
  • the module 50 with its heat exchanger plates 60 occupies at most one third of the target level 20 of the storage medium 12 along the vertical axis 110 .
  • ice is formed on the surface of the heat exchanger plates 60 when heat is withdrawn from the latent heat storage device 100 and is defrosted essentially in a pulsed manner when a predetermined ice thickness is reached. Small fluctuations in the water level 20 when the ice forms on the heat exchanger plates 60 of the heat exchanger unit 40 or when the ice is defrosted can be neglected compared to the distances.
  • the ice detached from the heat exchanger unit 40 can be accommodated in the free space 24 above the heat exchanger unit 40 placed near the bottom of the storage tank 10 without undesired forces being exerted on the heat exchanger unit 40 or storage wall 18 or storage floor 16 of the storage tank 10.
  • the module 50 with its heat exchanger plates 60 has, for example, an area of at least about 2 to 2.5 m 2 for heat extraction, with a favorable width of the heat exchanger plates 60 of, for example, about 800 mm to 1200 mm and a height of up to 1200 mm.
  • a module 50 of a heat exchanger unit 40 can advantageously consist of 8 to 12 heat exchanger plates 60 and is sufficient to supply a single-family house with approx. 150 m 2 of area to be heated, for example in Central Europe, in order to supply it with heat and, if necessary, cold over the year. Should more power be required, additional modules 50 can be installed and interconnected
  • the module 50 with its heat exchanger plates 60 has a volume of at most 20%, preferably 15%, particularly preferably at most 10% of the volume of the storage medium 12 .
  • the volume refers to the outer dimensions of an envelope of the heat exchanger plates 60 in the module 50, which are arranged here, for example, in a cuboid as an envelope.
  • the module 50 With its heat exchanger plates 60, the module 50 has a distance 54 from the container bottom 16, which is dimensioned such that the storage medium 12 is free of ice within the distance 54 even when the module 50 is in its intended coldest operating state.
  • the heat exchanger plates 60 can be arranged with their end faces facing the storage floor 16 on a pallet 65 which has spacers 66 corresponding to the storage floor 16 .
  • the storage container 10 is thermally coupled to its surroundings and is arranged in the ground in the operating state. This allows ambient heat to be absorbed, with the soil surrounding the storage container 10 generally having a temperature above the freezing point all year round.
  • the modular design of the heat exchanger unit 40 allows the storage tank 10 to be prefabricated with the at least one module 50 .
  • the latent heat accumulator 100 can be transported to the place of use without any problems by road transport and only needs to be inserted there into a prepared pit and, if necessary, also be filled with storage medium 12 and/or heat transfer fluid 52 .
  • a first circuit 202 of heat transfer fluid 52 is formed between latent heat store 100 and a primary side of heat pump 210 .
  • a second circuit 204 of the heat transfer fluid 52 is formed between the regeneration system 220 and the heat pump 210 .
  • a switching device (not shown) can be used to switch between the two circuits 202, 204, so that when heat pump 210 requests extraction, the energy source that is more favorable for heat pump 210, namely latent heat storage device 100 or regeneration system 220, always delivers heat to heat pump 210.
  • the heat transfer fluid 52 can be mixed, so that the heat pump 210 receives the heat transfer fluid 52 at a mixed temperature from the first and second circuits 202, 204.
  • a third circuit 206 is formed between the latent heat storage device 100 and the regeneration system 220 . This allows regeneration of the latent heat store 100 after the withdrawal period, the storage medium 12 of which is heated up in the process. Further, this allows for a brief regeneration of the heat exchanger unit 40 during the withdrawal period when ice that has formed temporarily on the surface of the heat exchanger plates 60 is removed in order to improve the thermal contact with the storage medium 12 .
  • Switching is expediently effected by control and/or regulation unit 350 of hydraulic module 1000, which on the one hand recognizes a request from heat pump 210 by measuring volume flow and temperature and switches circuits 202, 204 accordingly and, by measuring the outlet temperature of heat transfer fluid 52 from heat exchanger unit 40, recognizes whether there is ice on the surface of heat exchanger plates 60 and whether this should be removed.
  • the hydraulic module 1000 contains all the components, i.e. valves, temperature sensors, conveying means, volume flow sensors and the like, which are necessary for autonomous operation, so that intervention in a controller of the heat pump 210 is not necessary.
  • the figures 7 and 8th schematically illustrate configurations of a method for operating an energy supply system 200 with at least one latent heat store 100, which provides heat and cold for a consumer 150 via a heat exchanger unit 40.
  • the heat exchanger unit 40 is to be freed from ice during the extraction period in order to then be ready again for heat extraction.
  • step S100 in the hydraulic module 1000 ( figures 1 , 5 ) the exit temperature T_40 of the heat transfer fluid 52 from the heat exchanger unit 40 is detected. This can be done continuously or periodically. Temperature sensors are arranged in the system hydraulics 300 for this purpose.
  • step S102 the regulation and/or control unit 350 of the hydraulic module 1000 checks whether the outlet temperature T_40 is equal to or below a temperature threshold T_REG at which the regeneration of the heat exchanger unit 40 is to take place.
  • the temperature threshold T_REG corresponds to a defined thickness of the ice on the surface of the heat exchanger plates 60 and is advantageously in the range of -4°C and -8°C,
  • T_40 ⁇ T_REG (“y” in the flowchart)
  • the heat exchanger unit 40 is regenerated in step S104. If T_40 is above the temperature threshold T_REG (“n” in the flowchart), more heat is withdrawn from the latent heat storage device 100 .
  • step S106 the regulation and/or control unit 350 of the hydraulic module 1000 checks whether the outlet temperature T_40 exceeds a temperature value, for example 0°C. If this is the case ("y" in the flow chart), the regulation and/or control unit 350 of the hydraulic module 1000 switches back to the extraction mode in step S120. If this is not the case ("n" in the flow chart), the regeneration is continued in step S104.
  • a temperature value for example 0°C.
  • FIG 8 shows a variant of the procedure. Steps S100-S106 proceed as in figure 7 to which reference is made to avoid unnecessary repetition.
  • step S110 it is also checked whether an inlet temperature T_1 of the heat transfer fluid 52 in the heat exchanger unit 40 is greater by a defined value, for example 4 K, than the outlet temperature T_40. If this is the case ("y" in the flowchart), in step S120 a switch is made to the withdrawal mode. If the temperature difference is lower ("n" m flow chart), a heating source is switched on in step S112, for example an electric heating element in the storage medium 12, in order to warm up the storage medium 12.
  • a heating source is switched on in step S112, for example an electric heating element in the storage medium 12, in order to warm up the storage medium 12.
  • step S114 it is again checked whether an inlet temperature T_1 of the heat transfer fluid 52 in the heat exchanger unit 40 is greater by a defined value, for example 4 K, than the outlet temperature T_40. If this is the case ("y" in the flowchart), in step S120 a switch is made to the withdrawal mode. If the temperature difference is lower ("n" m flow chart), the storage medium 12 continues to be heated by means of the additional heat source.
  • a defined value for example 4 K

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EP22206731.6A 2022-01-24 2022-11-10 Accumulateur de chaleur latente, système d'alimentation en énergie doté d'au moins un accumulateur de chaleur latente et procédé de fonctionnement d'un système d'alimentation en énergie doté d'au moins un accumulateur de chaleur latente Pending EP4215860A1 (fr)

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EP0004552A1 (fr) 1978-04-10 1979-10-17 GebràœDer Sulzer Aktiengesellschaft Accumulateur de chaleur contenant de l'eau comme moyen de récupération de chaleur et procédé pour décharger l'accumulateur de chaleur
EP0019235A1 (fr) 1979-05-11 1980-11-26 Vereinigte Metallwerke Ranshofen-Berndorf AG Dispositif de stockage de chaleur avec changement de phase
DE3023592A1 (de) 1979-09-24 1981-06-11 De Dietrich & Cie., Niederbronn-les-Bains, Bas-Rhin Verfahren und anlage zur waermespeicherung
DE3136614A1 (de) 1980-09-19 1982-04-29 Vereinigte Metallwerke Ranshofen-Berndorf AG, 5282 Braunau am Inn, Oberösterreich Langzeitwaermespeicher mit aggregatzustandsumwandlung in form eines behaelters oder beckens
US6101821A (en) * 1998-05-22 2000-08-15 Evapco International, Inc. Ice thermal storage coil systems and methods
EP1807672B1 (fr) 2004-10-26 2008-10-01 von Rohr Alex Accumulateur d'energie, systeme d'echange de chaleur d'un accumulateur d'energie, systeme d'accumulation d'energie et procede correspondants
US20140251310A1 (en) * 2011-10-19 2014-09-11 Abengoa Solar Llc High temperature thermal energy storage
CH713882B1 (de) 2018-02-19 2018-12-14 Elektrizitaetswerk Jona Rapperswil Ag Plattenförmiger Wärmetauscher für die Gewinnung von Latentwärme aus Wasser.
EP3511667B1 (fr) * 2018-01-16 2020-01-29 Konvekta Aktiengesellschaft Accumulateur de chaleur latente ainsi que dispositif de chauffage et son procédé
WO2020209981A2 (fr) * 2019-03-15 2020-10-15 Phase Change Energy Solutions, Inc. Système de stockage d'énergie thermique
CA3109464C (fr) 2020-02-23 2021-11-02 Boaz Glass Generation et stockage de froid

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DE102013218278A1 (de) 2013-09-12 2015-03-12 Vritex-Technologies Ltd. Plattenförmiges Wärmetauscherelement für einen Eisspeicher
DE102019111184A1 (de) 2019-02-26 2020-08-27 caldoa GmbH Kaltwärmenetz mit zwischengeschaltetem Latentwärmespeicher

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Publication number Priority date Publication date Assignee Title
EP0004552A1 (fr) 1978-04-10 1979-10-17 GebràœDer Sulzer Aktiengesellschaft Accumulateur de chaleur contenant de l'eau comme moyen de récupération de chaleur et procédé pour décharger l'accumulateur de chaleur
EP0019235A1 (fr) 1979-05-11 1980-11-26 Vereinigte Metallwerke Ranshofen-Berndorf AG Dispositif de stockage de chaleur avec changement de phase
DE3023592A1 (de) 1979-09-24 1981-06-11 De Dietrich & Cie., Niederbronn-les-Bains, Bas-Rhin Verfahren und anlage zur waermespeicherung
DE3136614A1 (de) 1980-09-19 1982-04-29 Vereinigte Metallwerke Ranshofen-Berndorf AG, 5282 Braunau am Inn, Oberösterreich Langzeitwaermespeicher mit aggregatzustandsumwandlung in form eines behaelters oder beckens
US6101821A (en) * 1998-05-22 2000-08-15 Evapco International, Inc. Ice thermal storage coil systems and methods
EP1807672B1 (fr) 2004-10-26 2008-10-01 von Rohr Alex Accumulateur d'energie, systeme d'echange de chaleur d'un accumulateur d'energie, systeme d'accumulation d'energie et procede correspondants
US20140251310A1 (en) * 2011-10-19 2014-09-11 Abengoa Solar Llc High temperature thermal energy storage
EP3511667B1 (fr) * 2018-01-16 2020-01-29 Konvekta Aktiengesellschaft Accumulateur de chaleur latente ainsi que dispositif de chauffage et son procédé
CH713882B1 (de) 2018-02-19 2018-12-14 Elektrizitaetswerk Jona Rapperswil Ag Plattenförmiger Wärmetauscher für die Gewinnung von Latentwärme aus Wasser.
WO2020209981A2 (fr) * 2019-03-15 2020-10-15 Phase Change Energy Solutions, Inc. Système de stockage d'énergie thermique
CA3109464C (fr) 2020-02-23 2021-11-02 Boaz Glass Generation et stockage de froid

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