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EP3126768A1 - Système accumulateur de pression et procédé permettant de faire fonctionner ledit système - Google Patents

Système accumulateur de pression et procédé permettant de faire fonctionner ledit système

Info

Publication number
EP3126768A1
EP3126768A1 EP15709874.0A EP15709874A EP3126768A1 EP 3126768 A1 EP3126768 A1 EP 3126768A1 EP 15709874 A EP15709874 A EP 15709874A EP 3126768 A1 EP3126768 A1 EP 3126768A1
Authority
EP
European Patent Office
Prior art keywords
heat
storage
thermal insulation
insulation layer
hollow bodies
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.)
Withdrawn
Application number
EP15709874.0A
Other languages
German (de)
English (en)
Inventor
Ferdinand Schmidt
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.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Publication of EP3126768A1 publication Critical patent/EP3126768A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
    • 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
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
    • F24D11/0221—Central heating systems using heat accumulated in storage masses using heat pumps water heating system combined with solar energy
    • 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
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
    • F24D11/0235—Central heating systems using heat accumulated in storage masses using heat pumps water heating system with recuperation of waste energy
    • 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
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • F24D19/1078—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water the system uses a heat pump and solar energy
    • 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
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • F24D19/1081—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water counting of energy consumption
    • 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
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • F24D3/082—Hot water storage tanks specially adapted therefor
    • F24D3/085—Double-walled tanks
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/06—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits forming part of, or being attached to, the tank containing the body of fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F24D2200/123—Compression type heat pumps
    • 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
    • F24D2200/126—Absorption type heat pumps
    • 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
    • F24D2200/14—Solar energy
    • 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
    • F24D2220/08—Storage tanks
    • 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
    • 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
    • F28D2020/0082—Multiple tanks arrangements, e.g. adjacent tanks, tank in tank
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2270/00—Thermal insulation; Thermal decoupling
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the present invention relates to a heat storage arrangement and a method for operating such.
  • the heat storage arrangement contains an inner storage tank, an inner heat-insulating layer at least partially surrounding the inner storage tank, a device for transferring a heat loss layer passing through the inner heat-insulating layer of the inner storage tank to a heat transfer fluid and a heat pump containing an evaporator.
  • the device for transmitting the heat flow is hydraulically connectable to the evaporator of the heat pump.
  • solar thermal combined systems are systems that serve both domestic water heating and heating support. These plants usually have at least one hot water tank, which is provided with thermal insulation in order to heat lessen the memory.
  • the term "heat losses of the storage” or in short “storage losses” is understood here to mean the self-discharge of the storage due to the heat flow through the thermal insulation to the environment.
  • Typical combination storage tanks according to the prior art have a heat loss rate of about 4 W / K at a volume of 1,000 liters. In a medium
  • the storage medium here is water throughout, it can immediately serve as a heat carrier fluid through which heat exchangers (for example radiators) flow.
  • phase change In latent heat storage, a phase change (usually solid) is used to increase the usable heat capacity in a given temperature interval.
  • the phase change material (PCM, eg water / ice, salt hydrates or paraffin) can either be an unencapsulated substance directly fill a storage tank into which a heat exchanger is integrated, or the phase change material can be integrated into a composite (eg a graphite matrix to increase the thermal conductivity) are formed from the shaped body such as plates, which are brought into heat exchange with a heat transfer fluid.
  • An encapsulation of the phase change material in macrocapsules or microcapsules is also known, wherein the macrocapsules can be introduced directly into a storage container, so that a heat transfer fluid can flow between the capsules.
  • PCS Phase change slurries
  • a suspension of PCM microcapsules in a heat transfer fluid or of an emulsion consist of a suspension of PCM microcapsules in a heat transfer fluid or of an emulsion.
  • the use of PCS in a heat accumulator for buildings is described in EP 1 798 487 B1.
  • sorption storage and thermochemical storage are known.
  • the main problems of the sorption reservoirs to date are high costs, not yet available sorption materials with regard to the requirement of the application (in particular storage density and long-term stability) and not yet mature concepts for system integration in building energy systems.
  • thermal storage The most important goals in the further development of thermal storage are the increase of the usable energy density and, if necessary, the heat transfer performance of the storage (if the storage medium is not also heat transfer fluid) and the increase in storage efficiency, which is defined as the energy usable in the storage discharge in relation to the Storage charge spent energy.
  • the reduction of heat loss plays a key role in sensitive and latent heat storage.
  • An important approach here is improved thermal insulation (eg by evacuated highly porous insulating materials such as perlite or fumed silica, so-called vacuum super insulation).
  • thermal storage are known, which are used in combination with solar and heat pump systems.
  • thermal storage are known, which are used in combination with solar and heat pump systems.
  • DE 20 2006 012 871 Ul a water / ice storage is described, the
  • Uniformization of the heat supply of a heat pump is used and is located in the flow of the heat pump evaporator.
  • the heat losses to the environment represent a hitherto unavoidable disadvantage.
  • the heat loss rate of hot water storage tanks in W / K is not greater than 0.16 x ⁇ / ⁇ ⁇ with the nominal volume V n in liters.
  • the heat loss rate is 16 W / K and the heat losses / day at
  • Soil as a heat source can not be developed or only with great effort and possibly unreasonable burdens on the building users.
  • electric heat pumps that use air as a source of heat can usually achieve little more than the primary efficiency of gas fired boilers in the building stock - with annual work figures of 2.6.
  • EP 2532940 A2 describes a pressure-loadable segment memory which can be designed in such a way that the individual segments need not be pressure-resistant at their contact surfaces.
  • the hydraulic connection between The individual segments can be realized by means of pipe grommets that seal when filling the memory under pressure due to the pressure resulting from the pressure to the outside.
  • Object of the present invention is therefore to provide a heat storage arrangement that significantly increases the total energy efficiency of the system with low cost in solar thermal combined systems with a heat pump as an alternative heating system.
  • the heat storage arrangement should be advantageously usable in cases where the solar heat storage is outside the insulated building envelope, as is often the case with energetically renovated existing buildings.
  • the solution according to the invention should be so executable that a temporal flexibilization of the heat pump operation (load displacement / load decoupling) is made possible according to aspects that are independent of the current heat demand of the building and the current solar radiation offer.
  • This object is related to a heat storage arrangement with the Characteristics of claim 1 and with respect to a method for operating a heat storage arrangement having the features of claim 15.
  • the respective dependent claims are advantageous developments.
  • a heat storage arrangement which comprises an inner storage tank, an inner heat-insulating layer at least partially surrounding the inner storage tank, a device disposed on the side of the thermal-barrier layer facing away from the inner storage tank for transferring a heat loss layer of the inner storage tank passing through the inner heat-insulating layer to a heat - Includes meffyfluid and a heat pump containing an evaporator.
  • the device for transmitting the waste heat flow is hydraulically connectable to the evaporator of the heat pump.
  • the loss heat flow of an insulated heat accumulator can be absorbed at a low temperature level and supplied to the evaporator of a heat pump.
  • the system according to the invention has the advantage that heat storage of solar thermal combined systems can be arranged outside the insulated building envelope, without the heat flow is lost to the heating system through the thermal insulation of the memory.
  • the primary energy cost of the heating system compared to solar thermal combination systems according to the prior art can be reduced with the same collector and memory size.
  • Combi systems in conjunction with a heat pump reduce the primary energy costs or increase the solar coverage. This is achieved by utilizing the heat losses of the accumulator to raise the temperature level in the evaporator circuit of the heat pump, so that the heat pump can achieve a higher annual operating efficiency.
  • the device for transmitting a heat flow is designed as a sheath storage, wherein the sheath memory, a fluid or a phase change material (PCM), which may be in thermal contact with the heat transfer fluid contains.
  • PCM phase change material
  • a further preferred embodiment provides that the device for transmitting a heat flow is designed as a heat exchanger and contains no further memory elements.
  • an outer heat-insulating layer is disposed on the side of the inner heat-insulating layer facing away from the device, wherein the heat transfer resistance of the inner thermal barrier coating is greater than the heat transfer resistance of the outer thermal barrier coating. Due to the outer heat-insulating layer, a condensation of atmospheric moisture on the outside of the storage arrangement can be avoided since the water vapor contained in the ambient air can not reach the cold surfaces of the heat storage arrangement. In this case, relatively diffusion-tight (closed-cell) insulating materials can be used as the outer thermal barrier coating.
  • the device formed as a sheath storage is formed by at least two, preferably made of plastic, hollow body, each having an outer wall and an inner side and an outer side, wherein the shape of the at least two hollow body adapted to the surface of the inner thermal barrier coating is and each two adjacent hollow body of the at least two hollow bodies have a common contact surface.
  • the at least two hollow bodies are in this case substantially form-fitting around the arrangement of inner storage container and inner thermal barrier coating arranged around.
  • extrusion blow molding offers a cost-effective production process.
  • a further preferred embodiment provides that in each case one of the at least two hollow bodies, and in each case a part of the inner thermal barrier coating and optionally each part of the outer thermal barrier coating is integrated in each one of at least two prefabricated elements, wherein the at least two prefabricated elements substantially form - Are arranged around the inner storage container around.
  • a further preferred embodiment of the heat storage arrangement according to the invention provides that the inner thermal barrier coating consists of a hard foam and substantially positively abuts a wall of the inner storage container, also the outer wall of the at least two hollow body and / or optionally the outer thermal barrier coating is made hard enough, in order to limit a deformation of the outside of the hollow body, and the at least two hollow bodies are held in position by at least one tensile structure, preferably a steel drawstring, wherein the at least one tensile structure on an outer periphery of the assembly comprising the inner storage container inner heat-insulating layer, which is arranged at least two hollow body and optionally the outer thermal barrier coating.
  • This arrangement prevents the hollow bodies from bulging too much at the common contact surfaces. Furthermore, by the support on the inner
  • the at least two hollow bodies are designed such that they have at least one fluid passage at each contact surface to an adjacent hollow body, which is sealed by a pressure applied via the zugbelastbare structure contact pressure to the outside, and the at least two hollow body in addition a total of two more Have fluid connections on its outer side, so that on the at least two hollow bodies, a fluid circuit is constructed, through which all existing hollow body can be flowed through.
  • the at least two hollow bodies are designed so that they have two fluid passages at different heights at each contact surface to an adjacent hollow body and also each have a tensile structure in the respective height of these two fluid passages. In this way, the contact pressure can be maximized. In addition, if two fluid passages are present at different heights, a thermal stratification in the hollow bodies can occur as a result of the buoyancy forces.
  • the at least two prefabricated elements are designed so that heat-conducting planar elements rest in the regions on the inner heat-insulating layer, in which a heat flow from the inner storage container to the at least two
  • the sheath storage contains at least one phase change material (PCM), which has a melting point between -5 ° C and 30 ° C.
  • PCM phase change material
  • the PCM is preferably ice here if the refrigerant used in the heat pump allows operation below 0 ° C.
  • the jacket reservoir contains at least one phase change slurry (PCS) which is pumpable and can be used to transfer heat to the heat pump evaporator, the PCS containing at least one phase change material (PCM) having a melting point between 5 ° C and 30 ° C.
  • PCS phase change slurry
  • PCM phase change material
  • the melting point of the at least one phase change material is between 4 ° C and 20 ° C.
  • the refrigerant used in the heat pump is preferably water.
  • a further preferred embodiment of the heat storage arrangement according to the invention provides that the evaporator of the heat pump in addition to the shell memory with at least one other heat source is connected, at least a serial flow of the further heat source, the shell memory and the evaporator of the heat pump with the heat transfer fluid allows in this order becomes. In this way, a temporal flexibility of the heat pump operation (load displacement / load decoupling) can be made possible.
  • the heat pump is a sorption heat pump, in which water is preferably used as the refrigerant.
  • the heat pump is a thermally driven heat pump (in particular sorption heat pump)
  • the temporal flexibility is relevant if the heat source of the heat pump is coupled to a power generator (cogeneration). Due to the high mass-specific heat of evaporation of water, the highest (annual) operating figures can be achieved with water as the refrigerant for sorption heat pumps, provided that suitable low-temperature heat sources are available.
  • the present invention is also directed to a method for operating a heat storage arrangement according to the invention, wherein heat from a heat source, preferably a solar thermal system, introduced into the inner storage tank and used after removal to cover a heating and / or hot water demand, wherein the heat - Additional heat pump is also used to cover the heating and / or hot water demand, characterized in that when the heat of the inner storage tank in a foreseeable future time, preferably within the next two to four days, probably not alone Cover heat and / or hot water requirements, the heat pump is switched on before a complete discharge of the inner storage container periodically to cover the heating and / or hot water demand in the way that on average over the storage period of the device for transmitting a heat flow of the evaporator the heat pump receives at least the waste heat flow from the inner storage tank.
  • a heat source preferably a solar thermal system
  • Whether the heat of the inner storage tank alone can cover the heating heat and / or hot water demand in a specific time can be assessed, for example, by means of a predictive control.
  • the device for transmitting a heat flow is designed as a sheath storage, this is preferably operated in a temperature range between 0 ° C and 20 ° C.
  • the volume of the jacket storage is then preferably dimensioned so that the heat flow from the inner storage tank over a period of 8 hours at most leads to a temperature increase of 10 K in the shell memory. This achieves a temporal flexibility with regard to the heat pump operation, which can be used, for example in the case of compression heat pumps, to take electricity grid loads and fluctuating electricity prices into account.
  • the heat pump is an electric heat pump, it is possible to use the sheath accumulator for charging the inner storage container with high power, preferably in times of favorable electricity supply.
  • a further preferred variant of the method according to the invention provides that the heat pump is a thermally driven heat pump, preferably a sorption heat pump, and drive heat for the heat pump is provided by an additional heat source, preferably a burner or a CHP plant.
  • a further preferred variant of the method according to the invention provides that, when falling below a first threshold temperature in the inner storage tank, the heat and / or hot water demand is primarily covered by the heat from the heat pump when a second threshold temperature is exceeded in the heat flow transfer apparatus. and the coverage of the heating heat demand otherwise takes place primarily by the heat from the inner storage tank.
  • the inner storage tank is used as a layer heat storage, wherein the heat pump additionally introduces heat into a central region of the inner storage tank. In this way, the annual yield of the solar system can be increased.
  • Fig. 1 shows a detail of a cross section through a part of a heat storage arrangement according to the invention.
  • An inner storage container 1 is surrounded by an inner thermal barrier coating 2.
  • a device 3 for transmitting a passing through the inner thermal barrier coating 2 heat loss of the inner storage tank 1 to a heat transfer fluid, which is designed as a shell memory.
  • a heat transfer fluid which is designed as a shell memory.
  • an outer thermal barrier coating 5 is arranged on the side facing away from the inner thermal barrier coating 2 side of the designed as a shell memory device 3.
  • the jacket store is made up of a plurality of hollow bodies which have been produced by extrusion blow molding from a suitable plastic (for example HDPE). The individual hollow bodies are shaped so that they can be positively arranged around the inner storage container 1 and the inner thermal insulation layer 2.
  • the device 3 shows a part of a device 3 for transferring a heat loss stream passing through the inner thermal barrier coating 2 of the inner storage tank 1 onto a heat transfer fluid from various perspectives.
  • the device 3 is designed as a sheath storage and is constructed from hollow bodies.
  • the connection of the hollow body is made by a quick connection system with flexible hose pieces 6 and prefabricated on the hollow body attached fittings 7.
  • Such quick connectors are known from solar thermal collectors and are usually realized there because of the high temperature requirements with stainless steel corrugated pipes. From the heating technology are also tool-free mountable quick connectors for plastic / metal composite pipes known that may be suitable here (eg plug-in fittings).
  • the connecting pieces 7 In the region of the connecting pieces 7 are on the hollow bodies indentations or recesses, which allow a connection of the elements in a form-fitting arrangement around the inner storage container 1 around.
  • the entirety of the hollow body is connected by a Tichelmann interconnection in order to achieve the most uniform possible flow through the elements.
  • perforated tubes 9 are arranged within the storage elements between the connecting pieces 7, which together with the connecting pieces represent the distributor and collector of the Tichelmann interconnection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Water Supply & Treatment (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

L'invention concerne un système accumulateur de chaleur comprenant un réservoir accumulateur intérieur, une couche intérieure d'isolation thermique entourant au moins par endroits le réservoir accumulateur intérieur, un dispositif agencé sur la face de la couche d'isolation thermique opposée au réservoir accumulateur intérieur pour le transfert sur un fluide caloporteur d'un flux de chaleur dissipée du réservoir accumulateur intérieur traversant la couche d'isolation thermique, et une pompe à chaleur contenant un évaporateur, le dispositif pouvant être mis en communication hydraulique avec l'évaporateur.
EP15709874.0A 2014-04-03 2015-03-04 Système accumulateur de pression et procédé permettant de faire fonctionner ledit système Withdrawn EP3126768A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014206415.5A DE102014206415A1 (de) 2014-04-03 2014-04-03 Wärmespeicheranordnung und Verfahren zum Betrieb einer solchen
PCT/EP2015/054542 WO2015150010A1 (fr) 2014-04-03 2015-03-04 Système accumulateur de pression et procédé permettant de faire fonctionner ledit système

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EP3126768A1 true EP3126768A1 (fr) 2017-02-08

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EP (1) EP3126768A1 (fr)
DE (1) DE102014206415A1 (fr)
WO (1) WO2015150010A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102019111016B4 (de) * 2019-04-29 2020-11-12 Berndt Rüdiger Speicheranlage für sonnenerwärmtes Medium
CN117083487A (zh) * 2021-02-07 2023-11-17 八达通能源供暖有限公司 能量存储装置和设施

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DE2552916A1 (de) * 1975-11-26 1977-06-08 Weller Konrad Prof Dr Ing Sonnenwaermeanlage
AT6607U1 (de) * 2003-04-07 2004-01-26 Pbs Pernauer Gmbh Vorrichtung zum erwärmen und warmhalten von einem in einen behälter abgefüllten getränk
DE102005013012A1 (de) 2005-03-21 2006-09-28 ZAE Bayern Bayerisches Zentrum für angewandte Energieforschung e.V. Latentwärmespeicher für effiziente Kühl- und Heizsysteme
DE102005059029B4 (de) * 2005-12-10 2010-09-23 Juhl, Karsten, Dipl.-Ing. (FH) Verfahren und Vorrichtung zur Langzeitspeicherung von Wärme
EP1798487B1 (fr) 2005-12-15 2010-08-18 Vaillant GmbH Accumulateur de chaleur pour chauffage ou de production d'eau chaude
DE202006005592U1 (de) * 2006-04-04 2007-08-16 Schröder, Ulrich Wasserspeicher und Wärmepumpenanlage
DE202006012871U1 (de) 2006-08-22 2007-12-27 Consolar Solare Energiesysteme Gmbh Wasser-/Eisspeicher
EP2204618A3 (fr) 2009-01-02 2012-06-06 Vaillant GmbH Accumulateur thermique d'eau chaude ou usée
DE102009004971A1 (de) * 2009-01-14 2010-04-22 Viessmann Werke Gmbh & Co Kg Heizvorrichtung
DE102011100219B4 (de) * 2011-05-02 2022-08-11 Hubert Kohler Speichereinrichtung
DE202011102744U1 (de) 2011-06-10 2012-09-13 Consolar Solare Energiesysteme Gmbh Druckbelastbarer Segmentspeicher
DE102011052864A1 (de) * 2011-08-19 2013-02-21 Rehau Ag + Co. Latentwärmespeichervorrichtung
US9115937B2 (en) * 2011-12-15 2015-08-25 Virgil Dewitt Perryman Thermal energy storage and delivery system
DE102012106910A1 (de) * 2012-04-19 2013-10-24 Martin Schulte-Wissermann Langzeitwärmespeicher

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WO2015150010A1 (fr) 2015-10-08
DE102014206415A1 (de) 2015-10-08

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