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WO2018173545A1 - Appareil de stockage de chaleur chimique - Google Patents

Appareil de stockage de chaleur chimique Download PDF

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Publication number
WO2018173545A1
WO2018173545A1 PCT/JP2018/004841 JP2018004841W WO2018173545A1 WO 2018173545 A1 WO2018173545 A1 WO 2018173545A1 JP 2018004841 W JP2018004841 W JP 2018004841W WO 2018173545 A1 WO2018173545 A1 WO 2018173545A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
heat storage
storage medium
chemical
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.)
Ceased
Application number
PCT/JP2018/004841
Other languages
English (en)
Japanese (ja)
Inventor
一弘 平田
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.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries Ltd
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 Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to CN201880010269.4A priority Critical patent/CN110431370A/zh
Priority to JP2019507426A priority patent/JPWO2018173545A1/ja
Publication of WO2018173545A1 publication Critical patent/WO2018173545A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/003—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using thermochemical reactions
    • 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 chemical heat storage device.
  • Patent Document 1 heat energy such as waste heat is stored in a chemical heat storage material that accumulates heat energy in the form of a chemical reaction, and the stored chemical heat storage material is stored or transferred to a place where heat energy is required.
  • a chemical heat storage reactor for use is disclosed.
  • Patent Document 1 describes, as a specific example of chemical heat storage, a system using a calcium hydroxide heat storage material as a chemical heat storage material in order to efficiently store high-temperature waste heat exceeding 400 degrees.
  • calcium hydroxide heat storage material As a heat supply fluid, calcium oxide is generated by a dehydration reaction, and since this reaction is an endothermic reaction, it appears as a heat storage action.
  • the waste heat is effectively used by selecting the chemical heat storage material and improving the heat exchange efficiency between the chemical heat storage material and the fluid.
  • the subject of this invention is providing the chemical heat storage apparatus which can suppress the radiant heat loss from the chemical heat storage material hold
  • this invention is the following chemical heat storage apparatuses.
  • the chemical heat storage device of the present invention for solving the above-described problem is that the heat storage medium is heated and separated into a heat storage product and a generated fluid at the time of heat storage, and the heat storage product and the reaction fluid are reacted at the time of heat release to cause the heat storage.
  • a chemical heat storage device for generating a medium, wherein the heat storage medium, a heat medium fluid passes through, and a heat exchange unit that exchanges heat between the heat storage medium and the heat medium fluid, the heat storage medium and the heat
  • a supply port for storing the exchange unit, supplying a heat medium fluid from the outside to the heat exchange unit, and a storage container having a discharge port for discharging the heat medium fluid heat-exchanged with the heat storage medium to the outside
  • a first heat reflecting member is provided between the heat storage medium and the storage container, and the first heat reflecting member is disposed apart from the inner wall of the storage container.
  • the radiant heat from the heat storage medium generated by heat exchange can be returned to the heat storage medium side by the first heat reflecting member.
  • the radiant heat is prevented from being absorbed by the storage container, and air is interposed between the first heat reflecting member and the storage container. A layer is formed, and a further heat insulating effect is obtained.
  • the first heat reflecting member has a first ventilation portion.
  • chemical heat storage that requires the chemical heat storage material to be combined / desorbed with the production / reaction fluid, it is desirable to increase the degree of freedom of movement of the gas after the reaction simultaneously with heat shielding. According to this feature, since the movement path of the product fluid after the reaction is formed, the heat storage medium and the product gas can be separated.
  • the first ventilation portion of the first heat reflecting member is a slit or a hole formed in the first heat reflecting member. It is. According to this feature, the movement path of the product fluid after the reaction can be formed with a simple configuration.
  • a second heat reflecting member is provided between the first heat reflecting member and the storage container, and the second heat reflecting member is the first heat reflecting member.
  • the member and the inner wall of the storage container are spaced apart from each other. According to this feature, it becomes possible to return the radiant heat emitted from the first heat reflecting member and the first ventilation portion to the heat storage medium side by the second heat reflecting member, thereby further improving the heat shielding effect. Can be made.
  • the second heat reflecting member includes a second ventilation part, and the second ventilation part is a first ventilation of the first heat reflecting member. It arrange
  • heat release to the storage container due to radiation from the heat storage medium held in the storage container during heat storage can be suppressed.
  • heat storage efficiency can be improved.
  • the chemical heat storage device of the present invention heats the heat storage medium during heat storage and separates it into a heat storage product and a generated fluid, and at the time of heat dissipation, reacts the heat storage product with a reaction fluid to generate the heat storage medium. It is a device that can store waste heat generated from factories, waste incinerators, etc. in a heat storage medium and transport it to heat demand areas that require heat.
  • the configuration of the heat storage device of the present invention includes a heat storage medium, a heat exchange fluid that passes through the heat transfer fluid, and performs heat exchange between the heat storage medium and the heat transfer fluid, and the heat storage medium and the heat exchange portion. And a storage container having a supply port for supplying a heat medium fluid from the outside to the heat exchange unit, and a discharge container for discharging the heat medium fluid heat-exchanged with the heat storage medium to the outside. And a first heat reflecting member disposed apart from the inner wall of the storage container.
  • FIG. 1 is a schematic explanatory diagram showing the structure of a heat storage device 1a according to the first embodiment of the present invention.
  • the heat storage device 1a includes a storage container 2 that stores a heat storage medium 4 and a holding member 5 that holds the heat storage medium 4, and an external heat medium fluid that exchanges heat with the heat storage medium 4 inside the storage container 2. Is provided with a heat exchanging unit 3. Further, the storage container 2 is provided with a fluid supply port 8 for supplying the heat medium fluid from the outside and a fluid discharge port 9 for discharging the heat medium fluid to the outside. Further, a first heat reflecting member 6 is disposed between the storage container 2 and the holding member 5 so as to be separated from the inner wall of the storage container 2.
  • each configuration will be described in detail.
  • the heat storage medium 4 is a chemical substance that is separated into a heat storage product and a generated fluid during heating, and releases heat by the reverse reaction.
  • a heat storage product and a production fluid calcium oxide (CaO) and water vapor (H 2 O), calcium chloride (CaCl 2 ) and water vapor (H 2 O), calcium bromide (CaBr 2 ) and water vapor (H 2 O) ), Calcium iodide (CaI 2 ) and water vapor (H 2 O), magnesium oxide (MgO) and water vapor (H 2 O), magnesium chloride (MgCl 2 ) and water vapor (H 2 O), zinc chloride (ZnCl 2 ) And water vapor (H 2 O), strontium chloride (SrCl 2 ) and ammonia (NH 3 ), strontium bromide (SrBr 2 ) and ammonia (NH 3 ), calcium oxide (CaO) and carbon dioxide (CO 2 ), magnesium oxide (CaO) and carbon dioxide
  • the heat storage medium 4 preferably uses water vapor as a product fluid and a reaction fluid.
  • the chemical heat storage apparatus in this invention is a structure which exhibits an effect especially at the time of chemical heat storage at high temperature, as the heat storage medium 4 in this invention, as a heat storage product and a production
  • the structure and shape of the heat storage medium 4 in the present invention are not particularly limited, and may be powder, a molded body obtained by molding the powder, or a structure in which the heat storage medium 4 is supported on a porous body.
  • the structure of the holding member 5 that holds the heat storage medium 4 is a structure that holds the heat storage medium 4 in the storage container 2 and enables heat exchange between the heat storage medium 4 and the heat exchange unit 3.
  • FIG. 1 illustrates the structure in which the heat storage medium 4 is stored in one container
  • the present invention is not limited to this.
  • a configuration in which a plurality of box-shaped containers or tray-shaped containers in which the heat storage medium 4 is stored is stacked. It is good.
  • the material of the holding member 5 is not particularly limited as long as it can withstand high temperature processing.
  • the storage container 2 is a structure for storing the heat storage medium 4 and is made of a sealable structure.
  • the storage container 2 includes a heat exchange section 3 through which a fluid for transferring heat between the heat storage medium 4 housed inside and the outside passes, and a heat transfer fluid from the outside that exchanges heat with the heat exchange section 3.
  • the heat exchanging unit 3 may have any shape as long as it can transfer heat between the heat storage medium 4 housed in the holding member 5 and the heat transfer fluid from the outside. It is constituted by a heat exchange tube installed meandering inside, a double cylindrical inner cylinder portion with respect to the holding member 5 or the like.
  • the fluid supply port 8 and the fluid discharge port 9 may be disposed on different surfaces with respect to the storage container 2 or may be disposed on the same surface.
  • a fluid supply port 8 may be provided in the lower part of the storage container 2 and a fluid discharge port 9 may be provided in the upper part of the storage container 2 along the central axis of the storage container 2.
  • the fluid supply port 8 and the fluid discharge port 9 are provided on the same surface of the storage container 2 and the fluid supply and discharge are performed on one surface, the structure of the heat storage device 1a as a whole becomes compact. It becomes possible to expand the choice of the installation location of the heat storage apparatus 1.
  • the storage container 2 has an air opening 10 for releasing the generated fluid generated from the heat storage medium 4 during heat storage to the atmosphere, and an air supply port 11 for supplying a reaction fluid that reacts with the heat storage product during heat dissipation. I have.
  • the air opening 10 and the air supply port 11 use the same vent, but may be provided at different positions.
  • the air opening 10 is configured to discharge the generated fluid generated from the heat storage medium 4 to the outside of the storage container 2 when the heat is stored, and includes a liquid receiving tank that aggregates and recovers the generated fluid. Also good. Since the generated fluid is released to the outside by having the air opening 10, there is no need to provide a liquid receiving tank for aggregating and collecting the generated fluid, and the generated fluid is transferred from the heat supply area to the heat demand area. There is no need to transport. Therefore, there are advantages such as downsizing of the apparatus and reduction in transportation cost.
  • the air supply port 11 is configured to be opened at the time of heat dissipation and supply the reaction fluid to the storage container 2, and is connected to a supply unit (not shown) for supplying the reaction fluid at the time of heat dissipation.
  • the heat medium fluid may be of a temperature that can supply heat to the heat storage medium 4, and a fluid such as gas or liquid is preferable. Further, from the viewpoint of excellent handleability, it is particularly preferable to use a gas.
  • the first heat reflecting member 6 is provided between the storage container 2 and the heat storage medium 4 and is disposed away from the inner wall of the storage container 2.
  • the first heat reflecting member 6 is configured to reflect the radiant heat released from the holding member 5 holding the heat storage medium 4 during heat storage to the heat storage medium 4 side again. By providing the first heat reflecting member 6, it is possible to suppress the absorption of radiant heat into the storage container 2, and the heat storage effect is improved. Moreover, an air layer is formed between the 1st heat
  • the specific structure of the first heat reflecting member 6 is not particularly limited as long as it is a configuration for reflecting the radiant heat emitted from the holding member 5 to the heat storage medium 4 side.
  • a box-shaped structure that surrounds the entire member 5 or a cylindrical structure that is disposed so as to surround the periphery of the holding member 5 may be used.
  • the first heat reflecting member 6 may be configured by combining a cylindrical structure that surrounds the holding member 5 and a structure that covers either the upper or lower side of the holding member 5. Further, the first heat reflecting member 6 may have a curved surface so that heat is effectively collected on the heat storage medium 4 side.
  • the first heat reflecting member 6 is made of a material capable of reflecting radiant heat. Examples of such materials include aluminum, iron, copper, brass, silver, gold, platinum, nickel, stainless steel, chromium, tungsten, and the like. Non-metals include quartz glass, alumina ceramics, magnesia ceramics, refractory bricks and the like.
  • the emissivity is a value defined in JISZ8117 as the ratio of the radiant divergence of a radiator and the radiant divergence of a black body having the same temperature as that of the radiator. It can be obtained by measuring the spectral emissivity of The emissivity is a temperature dependent parameter. The emissivity of the material also depends on the surface state of the material.
  • the surface has a lower emissivity as the unevenness is smaller, a metal material having an abrasive surface rather than an oxidized surface or a rough surface is more preferable.
  • the emissivity of the material in the temperature at the time of thermal storage is 0.5 or less, More preferably, it is 0.1 or less, More preferably, it uses 0.05 or less.
  • FIG. 2 is a schematic explanatory view showing the structure of the heat storage device 1b according to the second embodiment of the present invention.
  • the heat storage device 1b is configured such that the first ventilation portion 61 is provided in the first heat reflecting member 6 in the heat storage device 1a of the first embodiment.
  • positions several plate-shaped members in louver form may be configured to have a slit or a hole as a vent.
  • the first ventilation portion 61 in the present invention preferably has a configuration in which a vent is provided in a plate-like member. With this configuration, it is possible to induce separation of the generated fluid from the heat storage medium with a simple configuration.
  • FIG. 3 is a schematic explanatory view showing the structure of the heat storage device 1c according to the third embodiment of the present invention.
  • the heat storage device 1c is provided with a second heat reflection member 7 outside the first heat reflection member 6, and the second heat reflection member 7 is provided in the storage container 2.
  • the inner wall and the first heat reflecting member 6 are spaced apart from each other. According to the heat storage device 1c, the radiant heat released through the first heat reflecting member 6 or the radiant heat released from the first ventilation portion 61 can be reflected to the heat storage medium 4 side. The heat storage effect can be further improved.
  • the specific structure of the second heat reflecting member 7 is not particularly limited as long as it is a structure for reflecting the radiant heat emitted from the holding member 5 to the heat storage medium 4 side, like the first heat reflecting member 6.
  • a box-shaped structure surrounding the entire holding member 5 or a cylindrical structure arranged so as to surround the holding member 5 may be used.
  • the second heat reflecting member 7 may have a configuration in which a cylindrical structure surrounding the holding member 5 and a structure covering either the upper or lower side of the holding member 5 are combined.
  • the second heat reflecting member 7 may have a curved surface so that heat is effectively collected on the heat storage medium 4 side.
  • the second heat reflecting member 7 is made of a material capable of reflecting radiant heat. Examples of such materials include aluminum, iron, copper, brass, silver, gold, platinum, nickel, stainless steel, chromium, tungsten, and the like. Non-metals include quartz glass, alumina ceramics, magnesia ceramics, refractory bricks and the like.
  • the second heat reflecting member 7 in the present invention in consideration of the emissivity of the above material.
  • the emissivity of the material in the temperature at the time of thermal storage is 0.5 or less, More preferably, it is 0.1 or less, More preferably, it uses 0.05 or less.
  • the second heat reflecting member 7 and the first heat reflecting member 6 may be made of the same material or different materials.
  • FIG. 4 is a schematic explanatory diagram showing the structure of the heat storage device 1d according to the fourth embodiment of the present invention.
  • This heat storage device 1d is configured such that the second ventilation portion 71 is provided in the second heat reflecting member 7 in the heat storage device 1c of the third embodiment.
  • the heat storage device 1d since the movement path of the generated fluid after reaction is formed in both of the two heat reflecting members, the heat storage medium and the generated fluid are efficiently separated, and the heat exchange efficiency is improved. Can do.
  • the second heat reflecting member 7 is provided with the second ventilation portion 71 as a configuration in which a plurality of plate-like members are arranged in a louver shape, as shown in FIG. Furthermore, it can be set as the structure which opens a slit and a hole as a vent hole in a plate-shaped member. Moreover, as a structure of the 2nd ventilation part 71 in this invention, it is especially preferable to set it as the structure and arrangement
  • the application of the chemical heat storage device of the present invention is used for a method of effectively utilizing waste heat generated from a factory, a waste incineration plant, or the like.
  • the chemical heat storage device of the present invention is stored in a heat supply area where waste heat is generated, and the heat storage device is used for a method of transporting heat to a heat demand place where heat is required and radiating heat. It can also be used in a method of storing heat in the same installation location during the time when waste heat is generated and dissipating heat during the time when heat is required. it can.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Le problème de la présente invention est de fournir un appareil de stockage de chaleur chimique avec lequel il est possible de supprimer la perte de chaleur rayonnante provenant d'un élément de stockage de chaleur chimique maintenu dans un récipient de réception pendant un échange de chaleur avec la chaleur stockée chimiquement et d'améliorer davantage l'efficacité de stockage de chaleur. Afin de résoudre le problème mentionné ci-dessus, la présente invention concerne un appareil de stockage de chaleur chimique caractérisé en ce qu'il comprend un milieu de stockage de chaleur, un échangeur de chaleur par l'intermédiaire duquel de la chaleur est échangée entre le milieu de stockage de chaleur et un fluide de milieu de chaleur et un récipient de réception qui reçoit le milieu de stockage de chaleur et l'échangeur de chaleur, un premier élément de réflexion de chaleur étant disposé entre le milieu de stockage de chaleur et le récipient de réception et le premier élément de réflexion de chaleur étant installé à une certaine distance de la paroi interne du récipient de réception. L'appareil de stockage de chaleur chimique selon l'invention permet de renvoyer la chaleur rayonnante produite par le milieu de stockage de chaleur pendant l'échange de chaleur vers le milieu de stockage de chaleur par le premier élément de réflexion de chaleur. De plus, l'installation du premier élément de réflexion de chaleur à une certaine distance de la paroi interne du récipient de réception supprime l'absorption de chaleur de réaction dans le récipient de réaction et produit un effet d'isolation thermique encore plus important.
PCT/JP2018/004841 2017-03-24 2018-02-13 Appareil de stockage de chaleur chimique Ceased WO2018173545A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201880010269.4A CN110431370A (zh) 2017-03-24 2018-02-13 化学蓄热装置
JP2019507426A JPWO2018173545A1 (ja) 2017-03-24 2018-02-13 化学蓄熱装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-059148 2017-03-24
JP2017059148 2017-03-24

Publications (1)

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WO2018173545A1 true WO2018173545A1 (fr) 2018-09-27

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PCT/JP2018/004841 Ceased WO2018173545A1 (fr) 2017-03-24 2018-02-13 Appareil de stockage de chaleur chimique

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JP (2) JPWO2018173545A1 (fr)
CN (2) CN110431370A (fr)
WO (1) WO2018173545A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114763975A (zh) * 2021-01-15 2022-07-19 住友重机械工业株式会社 化学蓄热装置及化学蓄热材料的蓄热方法
JP2024522644A (ja) * 2021-06-10 2024-06-21 ホルテック インターナショナル グリーンエネルギ蓄熱システム

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116761976A (zh) * 2021-03-01 2023-09-15 住友重机械工业株式会社 化学蓄热反应器
CN113432470A (zh) * 2021-07-16 2021-09-24 上海应用技术大学 一种显热与热化学耦合储热方法及装置
JP7649563B2 (ja) 2023-02-22 2025-03-21 足立石灰工業株式会社 固体を吸熱反応させる方法、及び酸化物を製造する方法

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JP2000292084A (ja) * 1999-04-02 2000-10-20 Energy Support Corp 蓄熱装置
JP2011220664A (ja) * 2010-03-22 2011-11-04 Denso Corp 化学蓄熱装置
JP2014231928A (ja) * 2013-05-28 2014-12-11 株式会社豊田自動織機 化学蓄熱装置

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JP2009019866A (ja) * 2007-06-13 2009-01-29 Panasonic Corp 化学蓄熱装置
JP2015212589A (ja) 2014-05-01 2015-11-26 シャープ株式会社 蓄熱放熱装置

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Publication number Priority date Publication date Assignee Title
JPH01135889A (ja) * 1987-11-20 1989-05-29 Mayekawa Mfg Co Ltd 可逆反応が可能な蓄熱物質並に蓄放熱方法
JP2000292084A (ja) * 1999-04-02 2000-10-20 Energy Support Corp 蓄熱装置
JP2011220664A (ja) * 2010-03-22 2011-11-04 Denso Corp 化学蓄熱装置
JP2014231928A (ja) * 2013-05-28 2014-12-11 株式会社豊田自動織機 化学蓄熱装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114763975A (zh) * 2021-01-15 2022-07-19 住友重机械工业株式会社 化学蓄热装置及化学蓄热材料的蓄热方法
JP2024522644A (ja) * 2021-06-10 2024-06-21 ホルテック インターナショナル グリーンエネルギ蓄熱システム

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JPWO2018173545A1 (ja) 2020-01-23
CN113503759A (zh) 2021-10-15
CN110431370A (zh) 2019-11-08
JP7682076B2 (ja) 2025-05-23
JP2022003304A (ja) 2022-01-11

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