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WO2025153774A1 - Dispositif de décharge et procédé pour un système de stockage d'énergie - Google Patents

Dispositif de décharge et procédé pour un système de stockage d'énergie

Info

Publication number
WO2025153774A1
WO2025153774A1 PCT/FI2025/050021 FI2025050021W WO2025153774A1 WO 2025153774 A1 WO2025153774 A1 WO 2025153774A1 FI 2025050021 W FI2025050021 W FI 2025050021W WO 2025153774 A1 WO2025153774 A1 WO 2025153774A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat transfer
solid particles
particle
discharging device
fluidizing
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
PCT/FI2025/050021
Other languages
English (en)
Inventor
Timo SIUKKOLA
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.)
Buffer Solutions Oy
Original Assignee
Buffer Solutions Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FI20245036A external-priority patent/FI20245036A1/en
Priority claimed from FI20245073A external-priority patent/FI20245073A1/en
Application filed by Buffer Solutions Oy filed Critical Buffer Solutions Oy
Publication of WO2025153774A1 publication Critical patent/WO2025153774A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
    • 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
    • F28D13/00—Heat-exchange apparatus using a fluidised bed
    • 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
    • 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 discharging device has multiple adjacent heat transfer modules, which are partially separated by a module wall.
  • the module wall between adjacent heat transfer modules has an opening in the module wall to allow the fluidized solid particles to travel to adjacent heat transfer module.
  • the fluidized solid particles travel horizontally from the particle inlet via adjacent heat transfer modules and through said opening to the particle outlet of the last heat transfer module.
  • the fluidizing gas flows out of the heat exchanger via a fluidization outlet 62.
  • the fluidization outlet 62 is arranged at the last heat transfer module 14. In one embodiment, the fluidization outlet 62 is at the wall of the last heat transfer module 14. In one embodiment, the fluidization outlet 62 is at the ceiling of the last heat transfer module 14. In one embodiment, the fluidization outlet 62 leads the fluidization gas to preheating the working fluid or solid particles 5 in the cold storage system any of the heating applications. The fluidizing gas flow may be further used to transport solid particles 5 in the heat storage system. In one embodiment, the fluidization outlet 62 leads the fluidization gas out of the energy storage system, for example to ambient air.
  • all heat transfer modules 11 - 15 comprise the particle draining outlet 65, as they may be used as intermediate take off for external/internal process purposes, in case of emergency, or during maintenance, to quickly empty all solid particles 5.
  • the particle draining outlet 65 may reside at the bottom of any heat transfer module 11 - 15.
  • the emergency drain process is not required in conventional process stoppage, as the solid particles 5, for example sand, would just fall to the floor of the discharging device and restarting the fluidization system would fluidize the solid particles 5 again.
  • Emergency drain may be used, for example, in case of process system failure such as pumps or rupture of tubes.
  • the roof of the discharging device comprises a rupture area configured to rupture and to release pressure controllably in case of the fluid tube 30 breakage.
  • Heat transfer module arrangements may be different.
  • the openings in adjacent walls of the module wall comprise a vertical section at different distances from a common corner.
  • three adjacent heat transfer modules share a corner.
  • Various alternatives or embodiments may follow the outer structure of the discharging device or available space in the heat storage system.
  • One exemplary embodiment of the heat transfer module arrangement at least portion of the discharge device comprises curved module walls or at least a portion of the module wall is curved.
  • the module walls are curved. This arrangement may mitigate the wear that rapidly moving solid particle may cause to the module walls.
  • the heat transfer module may comprise four walls, wherein at least one of those walls may be curved.
  • FIG. 5 illustrates schematically another embodiment, where the discharging device structure is donut-shaped, and the walls of consecutive heat transfer modules 11 - 18 are curved.
  • the partially open walls 21 - 27 are straight while the outer and inner walls of the heat transfer module 11 - 18 are curved.
  • the first particle inlet 51 is on the outer wall, solid particles 5 travelling from a middle portion of the donut-shaped structure and the particle outlet 59 being on the inner wall.
  • the discharging device is arranged on a silo-shaped structure, where the storage may reside above the discharging device.
  • the solid particles 5 may be moved pneumatically with an airflow, by gravitation, or by a conveyor leading to the cold storage or to the charging phase.
  • the working fluids are configured to flow from the at least two of the heat transfer modules to at least two different applications, selected from: a reheater, a superheater, a boiler bank, a steam generator, an evaporator, a heat pump application, a district heat application, industrial heat application and at least one phase of an economizer.
  • the different heat transfer modules may produce different temperatures and outlets for the working fluid.
  • One example of the superheater temperature range is 200 °C ... 650 °C.
  • boiler bank temperature range is 200 °C ... 374 °C.
  • One example of the reheater temperature range is 300 °C ... 650 °C.
  • district heating temperature range is 50 °C ... 140 °C.
  • FIG. 1 illustrates a counter current heat exchanger system being applied for the three phases of the economizer.
  • the solid particles 5 flow through heat exchanger modules 13, 14 and 15 sequentially.
  • the solid particles 5 dissipate thermal energy to the working fluid as each heat exchanger module 13 - 15, causing the last heat exchanger module 15 to being the coolest.
  • the working fluid passes through fluid tubes 30 in the heat exchangers in a reversed order 15, 14, 13.
  • the cool working fluid becomes gradually hotter as it travels through multiple heat exchanger modules 15 - 13, each being hotter than the previous one.
  • any of the heat exchanger modules 11 - 15 may have its own assigned purpose.
  • the last heat exchanger module 15 may be used for priming district heating to a temperature range between 80 °C and 120 °C.
  • Any of the fluid tubes 30 from any of the heat exchanger modules 11 - 15 may be connected to a Stirling engine. In one embodiment, heat from the heat exchanger module is used for heating the hot end of the Stirling engine.
  • FIG. 6 illustrates schematically a flowchart of a method for discharging thermal energy for an energy storage system.
  • the method comprises a step 70 of receiving, via the first particle inlet, solid particles into the discharging device.
  • Step 71 comprises fluidizing the solid particles.
  • Step 72 comprises circulating working fluid for receiving thermal energy from the solid particles to the working fluid.
  • step 73 fluidized solid particles travel horizontally from the particle inlet via adjacent heat transfer modules and through said openings to the particle outlet.
  • a discharging device for an energy storage system comprises multiple adjacent heat transfer modules.
  • Each heat transfer module comprises a particle chamber for fluidizable solid particles; a fluid tube comprising circulating working fluid for receiving thermal energy from solid particles to the working fluid; and a fluidization system for fluidizing the solid particles.
  • a first heat transfer module comprises a first particle inlet for receiving solid particles into the discharging device.
  • Adjacent heat transfer modules are partially separated by a module wall and partially connected by an opening in the module wall.
  • a last heat transfer module comprises a particle outlet for the solid particles, wherein the fluidized solid particles travel horizontally from the particle inlet via adjacent heat transfer modules and through said openings to the particle outlet.
  • a floor of the particle chamber comprises at least one particle draining outlet.
  • the fluidization system comprises at least one fluidizing chamber below the particle chambers, a fluidization inlet for receiving fluidizing gas into the fluidizing chamber and at least one fluidizing nozzle leading the fluidizing gas from the fluidizing chamber to each particle chamber.
  • the device comprises a fluidization outlet leading the fluidization gas to preheating solid particles.
  • at least one of the other heat transfer modules than the first heat transfer module comprises a second particle inlet for the solid particles.
  • the first particle inlet and the second particle inlet are controllable.
  • at least one of the heat transfer modules is configured to receive via the second particle inlet solid particles having different temperature than solid particles received into the first heat transfer module.
  • At least two of the heat transfer modules are configured to heat fluid tubes to different temperature ranges.
  • the working fluids are configured to flow from the at least two of the heat transfer modules to at least two different applications, selected from: a reheater, a superheater, a boiler bank, a steam generator, an evaporator, a heat pump application, a district heat application, industrial heat application and at least one phase of an economizer.
  • a method for discharging thermal energy for an energy storage system comprises multiple adjacent heat transfer modules.
  • Each heat transfer module comprises a particle chamber for fluidizable solid particles; a fluid tube comprising working fluid; a fluidization system; and a first heat transfer module comprising a first particle inlet.
  • the method comprises the steps of receiving, via the first particle inlet, solid particles into the discharging device; fluidizing the solid particles; and circulating working fluid for receiving thermal energy from the solid particles to the working fluid.
  • Adjacent heat transfer modules are partially separated by a module wall and partially connected by an opening in the module wall; and a last heat transfer module comprises a particle outlet for the solid particles.
  • the method comprises a step of fluidized solid particles travelling horizontally from the particle inlet via adjacent heat transfer modules and through said openings to the particle outlet.
  • the fluidization system comprises at least one fluidizing chamber below the particle chambers; and the method comprises receiving, via a fluidization inlet, fluidizing gas into the fluidizing chamber; and leading the fluidizing gas from the fluidizing chamber to each particle chamber by at least one fluidizing nozzle.
  • at least one of the other heat transfer modules than the first heat transfer module comprises a second particle inlet for the solid particles, and the method comprises the step of controlling the particle flow through the first particle inlet and at least one of the second particle inlets.
  • the method comprises the step of receiving, via the first inlet, the solid particles into the first heat transfer module at a first temperature and receiving, via at least one of the second particle inlets, solid particles to at least one heat transfer module at a different temperature than the first temperature.
  • the method comprises the step of heating the fluid tubes of at least two of the heat transfer modules to different temperature ranges.
  • the method comprises the step of causing the working fluids to flow from the at least two of the heat transfer modules to at least two different applications, selected from: a reheater, a superheater, a boiler bank, a steam generator, an evaporator, a heat pump application, a district heat application, industrial heat application and at least one phase of an economizer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un dispositif de décharge qui utilise des particules solides (5), par exemple des particules de sable, qui sont chauffées par l'énergie électrique provenant de la centrale à énergie renouvelable. Les particules solides (5) sont fluidisées par du gaz d'un état de type solide statique à un état de type fluide dynamique. Le dispositif de décharge comporte de multiples modules de transfert de chaleur adjacents (11-18), qui sont chacun partiellement séparés par une paroi de module (21-27). La paroi de module (21-27) entre des modules de transfert de chaleur adjacents présente une ouverture (31-34) dans la paroi de module (21-27) pour permettre aux particules solides fluidisées (5) de se déplacer vers le module de transfert de chaleur adjacent (11-18). Les particules solides fluidisées (5) se déplacent horizontalement à partir de l'entrée de particules au moyen de modules de transfert de chaleur adjacents (11-18) et par ladite ouverture (31-34) jusqu'à la sortie de particules (59) du dernier module de transfert de chaleur (14, 15, 18).
PCT/FI2025/050021 2024-01-17 2025-01-17 Dispositif de décharge et procédé pour un système de stockage d'énergie Pending WO2025153774A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FI20245036A FI20245036A1 (en) 2024-01-17 2024-01-17 HEAT EXCHANGER AND METHOD FOR ENERGY STORAGE SYSTEMS
FI20245036 2024-01-17
FI20245073 2024-01-25
FI20245073A FI20245073A1 (en) 2024-01-25 2024-01-25 DISCHARGE DEVICE AND METHOD FOR AN ENERGY STORAGE SYSTEM

Publications (1)

Publication Number Publication Date
WO2025153774A1 true WO2025153774A1 (fr) 2025-07-24

Family

ID=96470830

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/FI2025/050021 Pending WO2025153774A1 (fr) 2024-01-17 2025-01-17 Dispositif de décharge et procédé pour un système de stockage d'énergie
PCT/FI2025/050020 Pending WO2025153773A1 (fr) 2024-01-17 2025-01-17 Échangeur de chaleur et procédé pour système de stockage d'énergie

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/FI2025/050020 Pending WO2025153773A1 (fr) 2024-01-17 2025-01-17 Échangeur de chaleur et procédé pour système de stockage d'énergie

Country Status (1)

Country Link
WO (2) WO2025153774A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9829217B2 (en) * 2013-04-22 2017-11-28 The Babcock & Wilcox Company Concentrated solar power solids-based system
US20190249866A1 (en) * 2016-11-01 2019-08-15 Valmet Technologies Oy A circulating fluidized bed boiler with a loopseal heat exchanger

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10144747A1 (de) * 2001-09-11 2003-03-27 Buehler Ag Kontinuierliche thermische Behandlung von Schüttgütern
AT510897B1 (de) * 2010-09-03 2012-10-15 Univ Wien Tech Wärmespeichersystem

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9829217B2 (en) * 2013-04-22 2017-11-28 The Babcock & Wilcox Company Concentrated solar power solids-based system
US20190249866A1 (en) * 2016-11-01 2019-08-15 Valmet Technologies Oy A circulating fluidized bed boiler with a loopseal heat exchanger

Also Published As

Publication number Publication date
WO2025153773A1 (fr) 2025-07-24

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