EP3933175A1 - Système de stockage d'énergie thermique - Google Patents

Système de stockage d'énergie thermique Download PDF

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Publication number
EP3933175A1
EP3933175A1 EP20183435.5A EP20183435A EP3933175A1 EP 3933175 A1 EP3933175 A1 EP 3933175A1 EP 20183435 A EP20183435 A EP 20183435A EP 3933175 A1 EP3933175 A1 EP 3933175A1
Authority
EP
European Patent Office
Prior art keywords
energy storage
heat
thermal energy
transfer medium
heat transfer
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Withdrawn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
EP20183435.5A
Other languages
German (de)
English (en)
Inventor
Alexander Zaczek
Florian Künzel
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.)
Siemens Gamesa Renewable Energy GmbH and Co KG
Original Assignee
Siemens Gamesa Renewable Energy GmbH and Co KG
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 Siemens Gamesa Renewable Energy GmbH and Co KG filed Critical Siemens Gamesa Renewable Energy GmbH and Co KG
Priority to EP20183435.5A priority Critical patent/EP3933175A1/fr
Priority to EP21739574.8A priority patent/EP4146916A1/fr
Priority to PCT/EP2021/066932 priority patent/WO2022002683A1/fr
Publication of EP3933175A1 publication Critical patent/EP3933175A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
    • F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters

Definitions

  • the charging flow path may implement a closed cycle that is configured to return the heat transfer medium leaving the energy storage device, via the second heat consumer, back to the heat source in order to increase the amount of thermal energy stored in the heat transfer medium.
  • the heat transfer medium is cycled in the charging flow path through the heat source and the energy storage device for continuously transferring thermal energy to the energy storage device.
  • Such closed cycle is more energy efficient.
  • the thermal energy storage system is configured to alternatingly operate in the charging mode and the discharging mode. Accordingly, the system may cause alternating flows in opposite direction or in the same direction through the energy storage device to charge/discharge the energy storage device.
  • the steam or hot water generated in the district heating system heater may be distributed through a system of insulated pipes and may be provided for residential and commercial heating requirements, such as space heating or water heating.
  • the method further comprises providing thermal energy from the heat transfer medium to a second heat consumer that is arranged in the charging flow path and in the discharging flow path such that the heat transfer medium passes through the second heat consumer both during operation in the charging mode and during operation in the discharging mode.
  • an outlet of the blower 8b is connected to the inlet of the heat source 6a by conduit 18d.
  • the heat transfer medium exiting the heat source 6 through an outlet of the heat source 6b is transported to junction 20a by conduit 18a.
  • conduit 18b is connected to an inlet 12a of the first heat consumer 12.
  • the thermal energy storage system 2 includes a conduit 18e from the junction 20a to a first port 4a of the energy storage device 4.
  • the heat transfer medium exits the energy storage device 4 through a second port 4b and is guided to a first port 10a of the second heat consumer 10.
  • the 'heated' heat transfer medium (compared to the heat transfer medium entering the energy storage device 4) flows, via conduits 18e and 18b and junction 20a into the first heat consumer 12.
  • the second flow direction B of the heat transfer medium in the discharging mode through the second heat consumer 10 and the energy storage device 4 is opposite to the first flow direction A through these components in the charging mode.
  • the heat transfer medium transfers the thermal energy to a second medium.
  • the first heat consumer may be a steam generator that generates steam from the second medium with high temperature and pressure (e.g. 565° C at 180 bar).
  • the heat transfer medium exiting the first heat consumer 12 and being guided back to the blower 8 through conduits 18c and 18k has a temperature of, e.g., between 150 and 450°C.
  • the discharging cycle is completed.
  • the system 2 may operate in the discharging mode in which the heat transfer medium is cycled along the discharging flow path until the energy storage device is fully discharged or no further heat demand is present.
  • the thermal energy storage system may be operated in the charging mode again until the energy storage device is re-charged.
  • the output of the blower 8 has the same flow direction in the charging and discharging mode.
  • At least one control valve may be provided downstream of the blower 8 to separate the flow paths into the charging and the discharging flow paths 14, 16.
  • Further control valves e. g. three way valves, may be provided upstream of the blower 8.
  • the thermal energy storage system 2 may include a control unit configured to control the control valves such that in charging mode, the heat transfer medium flows along the charging flow path 16 (dashed arrows) and in discharging mode, the heat transfer medium flows along the discharging flow path 14 (dotted arrows). It should be clear that there may be arranged more than one blower 8 in the thermal energy storage system 2. Further blowers could be used e.g. for boosting the pressure of the heat transfer medium or for the purpose of redundancy.
  • a respective control unit configured to control such control valves may include a microprocessor and memory, which stores control instructions which are executed by the processor and which alternatingly operate the system 2 in the charging mode and the discharging mode and possibly in an idle mode.
  • Such processor may for example be a digital signal processor, an application specific integrated circuit (ASIC), a microprocessor or the like.
  • the memory may include flash-memory, a hard disk drive, RAM, ROM, and other types of volatile and non-volatile memory.
  • Such control unit may furthermore include input and output interfaces for controlling the control valves and for receiving sensor signals.
  • the temperature in the energy storage device 4 may be monitored to determine when operation in the charging mode is necessary or when the maximum amount of energy is stored. Likewise, it may determine the heat demand of heat consumer 12 and operate the system 2 accordingly in the discharging mode to supply the respective thermal energy.
  • the at least one first port 4a is operated as an outlet and the at least one second port 4b as an inlet for the heat transfer medium while the heat transfer medium flows in a second flow direction B which is opposite to the first flow direction A of the charging mode.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
EP20183435.5A 2020-07-01 2020-07-01 Système de stockage d'énergie thermique Withdrawn EP3933175A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20183435.5A EP3933175A1 (fr) 2020-07-01 2020-07-01 Système de stockage d'énergie thermique
EP21739574.8A EP4146916A1 (fr) 2020-07-01 2021-06-22 Système de stockage d'énergie thermique
PCT/EP2021/066932 WO2022002683A1 (fr) 2020-07-01 2021-06-22 Système de stockage d'énergie thermique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20183435.5A EP3933175A1 (fr) 2020-07-01 2020-07-01 Système de stockage d'énergie thermique

Publications (1)

Publication Number Publication Date
EP3933175A1 true EP3933175A1 (fr) 2022-01-05

Family

ID=71451980

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20183435.5A Withdrawn EP3933175A1 (fr) 2020-07-01 2020-07-01 Système de stockage d'énergie thermique
EP21739574.8A Withdrawn EP4146916A1 (fr) 2020-07-01 2021-06-22 Système de stockage d'énergie thermique

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP21739574.8A Withdrawn EP4146916A1 (fr) 2020-07-01 2021-06-22 Système de stockage d'énergie thermique

Country Status (2)

Country Link
EP (2) EP3933175A1 (fr)
WO (1) WO2022002683A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094148A (en) * 1977-03-14 1978-06-13 Stone & Webster Engineering Corporation Thermal storage with molten salt for peaking power
US20100251711A1 (en) * 2007-10-03 2010-10-07 Isentropic Limited Energy Storage
US20140020383A1 (en) * 2011-03-07 2014-01-23 Hitachi ,Ltd. Solar Heat Steam Cycle System
GB2537126A (en) * 2015-04-07 2016-10-12 Isentropic Ltd Hybrid energy storage system
EP3102796A1 (fr) 2014-09-30 2016-12-14 Siemens Aktiengesellschaft Système d'échange d'énergie thermique à haute température et procédé d'échange d'énergie thermique à l'aide dudit système d'échange d'énergie thermique à haute température

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094148A (en) * 1977-03-14 1978-06-13 Stone & Webster Engineering Corporation Thermal storage with molten salt for peaking power
US20100251711A1 (en) * 2007-10-03 2010-10-07 Isentropic Limited Energy Storage
US20140020383A1 (en) * 2011-03-07 2014-01-23 Hitachi ,Ltd. Solar Heat Steam Cycle System
EP3102796A1 (fr) 2014-09-30 2016-12-14 Siemens Aktiengesellschaft Système d'échange d'énergie thermique à haute température et procédé d'échange d'énergie thermique à l'aide dudit système d'échange d'énergie thermique à haute température
GB2537126A (en) * 2015-04-07 2016-10-12 Isentropic Ltd Hybrid energy storage system

Also Published As

Publication number Publication date
EP4146916A1 (fr) 2023-03-15
WO2022002683A1 (fr) 2022-01-06

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