WO2023236456A1 - Mur ayant des fonctions d'élimination de bruit, de stockage de froid à changement de phase et d'amélioration de transfert de chaleur - Google Patents

Mur ayant des fonctions d'élimination de bruit, de stockage de froid à changement de phase et d'amélioration de transfert de chaleur Download PDF

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Publication number
WO2023236456A1
WO2023236456A1 PCT/CN2022/134265 CN2022134265W WO2023236456A1 WO 2023236456 A1 WO2023236456 A1 WO 2023236456A1 CN 2022134265 W CN2022134265 W CN 2022134265W WO 2023236456 A1 WO2023236456 A1 WO 2023236456A1
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WO
WIPO (PCT)
Prior art keywords
phase change
cold storage
layer
wall
change cold
Prior art date
Application number
PCT/CN2022/134265
Other languages
English (en)
Chinese (zh)
Inventor
胡北
李百利
刘婧
韩金权
张丽丽
张凤霖
邱珊珊
康健
朱芸芸
陈浩南
刘新
Original Assignee
中国核电工程有限公司
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Publication date
Application filed by 中国核电工程有限公司 filed Critical 中国核电工程有限公司
Publication of WO2023236456A1 publication Critical patent/WO2023236456A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/88—Insulating elements for both heat and sound
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E04B1/945—Load-supporting structures specially adapted 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
    • 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
    • F28D20/023—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 being enclosed in granular particles or dispersed in a porous, fibrous or cellular structure
    • 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 invention belongs to the technical field of heat exchange equipment and relates to a wall that has the functions of noise elimination, phase change cold storage and enhanced heat exchange.
  • the enclosure structure wall of the habitable area of the main control room of the nuclear power plant is thicker and has excellent cold storage potential.
  • the exterior facade of the wall decoration needs to be equipped with sound-absorbing panels with micro-perforations and sound-absorbing materials. , the thermal resistance is large, which reduces the cold storage and cold release effects of the concrete structure.
  • the present invention provides a wall that has the functions of sound attenuation, phase change cold storage and enhanced heat exchange.
  • the wall includes a concrete layer, a phase change cold storage layer, a micro-perforated plate, an insulation layer and a thermal conductive cold bridge.
  • the insulation layer is arranged on the outermost side of the wall to limit heat transfer from the cold storage boundary to the outside; the concrete layer is connected to the phase change cold storage layer, and is located entirely inside and outside the insulation layer.
  • the concrete layer is used to bear the structural load of the wall and provide part of the cold storage capacity;
  • the phase change cold storage layer is used to provide most of the cold storage capacity;
  • the micro-perforated plate is arranged on the wall The innermost side is used for radiation heat exchange, convection heat exchange and noise reduction;
  • the thermal conductive cold bridge connects the micro-perforated plate, the phase change cold storage layer and the concrete layer, serving as both a structural support and a transmission Hot parts.
  • the present invention provides a wall that has the functions of sound attenuation, phase change cold storage and enhanced heat exchange, wherein: the phase change cold storage layer includes a supporting material and a phase change cold storage material, and the The supporting material is a porous or fibrous solid, and the particles of the phase change cold storage material are mixed in the supporting material in a certain proportion, so that the phase change cold storage material can be used as a whole in any phase state.
  • the present invention provides a wall that has the functions of sound attenuation, phase change cold storage and enhanced heat transfer, wherein the phase change cold storage material in the phase change cold storage layer is a flammable material including paraffin.
  • the phase change cold storage layer can be placed between the concrete layer and the insulation layer.
  • the chilled water coil passes through through and arranged inside or on the surface of the phase change cold storage layer, so that the chilled water coil and the phase change cold storage layer are combined to provide most of the cold storage capacity; the chilled water coil is spiral and circuitous Type, spiral roundabout type or capillary branch type (capillary branch type can improve the uniformity of cooling and reduce pipeline design pressure and risk of flooding).
  • the present invention provides a wall that combines the functions of sound attenuation, phase change cold storage and enhanced heat exchange, wherein the wall further includes an exhaust pipe arranged on the ground below the phase change cold storage layer. Sink and drain pipe are used to collect and discharge pipeline leakage and condensation water, thereby avoiding the impact of flooding on indoor decoration and equipment, and as a means of monitoring the integrity of the chilled water coil.
  • the acoustic heat exchange layer satisfies the requirements of resistance and resistance silencing at the same time; the material of the resistive silencing layer is flame-retardant organic fiber or inorganic fiber (if the resistive silencing layer is used in a nuclear power plant, it is resistant to radiation dose It also needs to meet 4 ⁇ 10 4 Gy).
  • the beneficial effect of the present invention is that the wall with the functions of sound attenuation, phase change cold storage and enhanced heat exchange can be used in the main control room and electrical equipment room of a nuclear power plant. Enhance heat exchange function.
  • Figure 1 is a schematic structural diagram of a wall with functions of sound attenuation, phase change cold storage and enhanced heat exchange according to Embodiment 1 of the present invention.
  • Figure 2 is a schematic structural diagram of a phase change cold storage fire-resistant wall that prevents chilled water from entering the room according to Embodiment 2 of the present invention.
  • Figure 4 is a schematic structural diagram of a phase change thermal storage wall using capillary chilled water pipes according to Embodiment 4 of the present invention.
  • FIG. 1 The structure of an exemplary wall of the present invention that has the functions of sound attenuation, phase change cold storage and enhanced heat exchange is shown in Figure 1, including a concrete layer 1 and a phase change cold storage layer 2 (the supporting material is, for example, honeycomb activated carbon, phase
  • the variable cold storage material is, for example, paraffin with a melting point of 28°C)
  • the resistive sound-absorbing layer 4 made of, for example, glass wool with a thickness of 3 cm, and wrapped with radiation-resistant glass fiber cloth
  • the micro-perforated plate 5 for example, a 0.6 mm aluminum alloy plate with a surface Blackbody radiation coating
  • ventilation cavity 7 insulation layer 8 (material, for example, silicone rubber or glass wool, thickness, for example, 50 mm to 80 mm, fire resistance time, for example, 2 hours), drainage channel 9, drainage pipe 10, and heat conduction cooling Bridge (such as integrated heat pipe 6 as described below).
  • the thermal insulation layer 8 is arranged on the outermost side of the wall (outdoor side) to limit heat transfer from the cold storage boundary to the outside.
  • the resistive sound attenuation layer 4 is arranged between the phase change cold storage layer 2 and the micro-perforated plate 5 , and the ventilation cavity 7 is provided within the resistive sound attenuation layer 4 .
  • the resistive sound attenuation layer 4 is used to form a sound attenuation and heat exchange layer together with the micro-perforated plate 5 and the ventilation cavity 7 to meet the requirements of resistance and resistance sound attenuation at the same time.
  • the thermal conductive cold bridge connects the micro-perforated plate 5, the phase change cold storage layer 2 and the concrete layer 1, serving as both a structural support and a heat transfer component.
  • An integral gravity heat pipe is used as a thermal conductive cold bridge to improve the thermal conductivity inside the phase change cold storage layer 2 .
  • Different cold storage and cold release rates can be achieved by utilizing the unidirectional heat transfer of heat pipes. If the room needs to store cold quickly and release it slowly, the evaporation section of the gravity heat pipe is set in the phase change cold storage layer 2; if the room needs to store heat slowly and release it quickly, the evaporation section of the gravity heat pipe is set inside the room.
  • Drainage grooves 9 and drainage pipes 10 are provided on the ground below the phase change cold storage layer 2 to collect and discharge pipeline leakage water and condensation water, thereby avoiding the impact of flooding on indoor decoration and equipment, and at the same time serving as monitoring chilled water coils 3 means of integrity.
  • Concrete layer 1 is the main stress-bearing component of the wall and bears part of the cold storage capacity.
  • the phase change cold storage layer 2 includes support materials and phase change cold storage materials.
  • the wall also includes chilled water coils 3 that pass through and are arranged inside or on the surface of the phase change cold storage layer 2, so that the phase change cold storage layer 2 bears most of the cold storage capacity.
  • the insulation layer 8 is used to reduce the leakage of cold storage capacity to the outside world, improve the cold storage efficiency, and reduce refrigeration energy consumption.
  • the temperature of the phase change thermal storage layer 2 is maintained slightly lower than the room temperature through the chilled water coil 3, and can be used to remove part of the room cooling load. In this case, the phase change thermal storage material remains solid.
  • the chilled water system and the room air conditioning system were shut down, and the temperature difference between the wall and the room gradually increased, causing the phase change thermal storage material to melt.
  • the cold storage capacity of concrete, retained chilled water and phase change cold storage materials is introduced into the room to maintain the room temperature below the set value for a certain period of time.
  • a drainage groove 9 and a drainage pipe 10 are provided at the bottom of the phase change cold storage layer 2 to collect and remove leakage water from chilled water pipes and condensation water on the wall. At the same time, it can be determined whether the chilled water coil 3 in the wall is leaking based on the drainage volume.
  • Embodiment 1 The difference from Embodiment 1 is that the chilled water coil 3 in the phase change cold storage layer 2 is eliminated, and the inclination angle of all the integrated heat pipes 6 is changed (diagram a in Figure 3) or some of the integrated heat pipes 6 are changed.
  • the inclination angle (diagram b in Figure 3).
  • the evaporation section (lower end) of the integrated heat pipe 6 (functioning as a cold storage heat pipe) is installed in the wall, and the condensation section (upper end) of the integrated heat pipe 6 is connected to the micro-perforated plate 5 so that excess cooling in the room can be efficiently introduced during normal operation. stored in the wall. There is a certain directionality in the heat transfer of the integrated heat pipe 6.
  • Embodiment 1 The difference from Embodiment 1 is that the chilled water main pipe 13 and the capillary chilled water branch pipe 12 are used instead of the circuitous chilled water coil 3 .
  • the chilled water main pipe 13 and the capillary chilled water branch pipes 12 are arranged inside or on the surface of the phase change cold storage layer 2 .
  • the chilled water main pipe 13 is connected to a plurality of capillary chilled water branch pipes 12 and distributes chilled water to each capillary chilled water branch pipe 12 .
  • the filling ratio and specific surface area of the capillary chilled water branch pipes are larger than ordinary chilled water pipes, and the heat exchange with the phase change cold storage material is more uniform; and the capillary and gravity are used to transport chilled water, with smaller pipeline resistance, lower water supply pressure requirements, and at the same time reducing Risk of leakage.
  • the present invention uses special fireproof insulation materials for nuclear power plants that meet a certain fire resistance time as the outer insulation layer of the wall, which not only reduces the risk of fire in the phase change cold storage layer, but also reduces the leakage of cold storage to the outside world.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Acoustics & Sound (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Building Environments (AREA)

Abstract

La présente invention se rapporte au domaine technique des dispositifs d'échange de chaleur et concerne une paroi ayant des fonctions d'élimination de bruit, de stockage de froid à changement de phase et d'amélioration de transfert de chaleur. La paroi comprend une couche de béton (1), une couche de stockage de froid à changement de phase (2), une plaque micro-perforée (5), une couche d'isolation thermique (8) et un pont froid de conduction thermique. La paroi ayant des fonctions d'élimination de bruit, de stockage de froid à changement de phase et d'amélioration de transfert de chaleur de la présente invention peut mettre en œuvre les fonctions d'élimination de bruit, de stockage de froid à changement de phase et d'amélioration de transfert de chaleur lorsqu'elle est appliquée à des salles de commande maîtresses de centrale nucléaire et à des salles de dispositifs d'instrument électrique.
PCT/CN2022/134265 2022-06-08 2022-11-25 Mur ayant des fonctions d'élimination de bruit, de stockage de froid à changement de phase et d'amélioration de transfert de chaleur WO2023236456A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210640144.8A CN115030353A (zh) 2022-06-08 2022-06-08 一种兼具消声、相变蓄冷和强化换热功能的墙体
CN202210640144.8 2022-06-08

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WO2023236456A1 true WO2023236456A1 (fr) 2023-12-14

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115030353A (zh) * 2022-06-08 2022-09-09 中国核电工程有限公司 一种兼具消声、相变蓄冷和强化换热功能的墙体

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CN115030353A (zh) * 2022-06-08 2022-09-09 中国核电工程有限公司 一种兼具消声、相变蓄冷和强化换热功能的墙体

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CN103940019A (zh) * 2014-05-09 2014-07-23 广西钧富凰地源热泵有限公司 一种空调系统以及热泵设备
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Publication number Priority date Publication date Assignee Title
CN103791555A (zh) * 2012-10-31 2014-05-14 中国建筑科学研究院 复合式吊顶辐射板
CN104314195A (zh) * 2014-09-30 2015-01-28 浙江大学 一种基于热管的墙体及供暖系统
US20200408471A1 (en) * 2017-06-13 2020-12-31 South China University Of Technology Phase-change energy-storage structure for building insulation
CN107313520A (zh) * 2017-06-24 2017-11-03 江西理工大学 一种基于通风墙体的双层相变储能辐射空调系统
CN209145057U (zh) * 2018-08-18 2019-07-23 西南科技大学 一种太阳能室温调节墙体
CN209623006U (zh) * 2019-02-26 2019-11-12 长安大学 一种内嵌管式辐射供冷相变墙体
CN210316096U (zh) * 2019-07-22 2020-04-14 中国建筑第七工程局有限公司 一种建筑墙体的隔声减震结构
CN112262686A (zh) * 2020-09-17 2021-01-26 西安科技大学 一种主被动式太阳能蓄热释热墙体
CN115030353A (zh) * 2022-06-08 2022-09-09 中国核电工程有限公司 一种兼具消声、相变蓄冷和强化换热功能的墙体

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