EP3848664A1 - Tube d'échange de chaleur gaz-gaz compact et procédés de fabrication et d'utilisation associés - Google Patents

Tube d'échange de chaleur gaz-gaz compact et procédés de fabrication et d'utilisation associés Download PDF

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Publication number
EP3848664A1
EP3848664A1 EP19858007.8A EP19858007A EP3848664A1 EP 3848664 A1 EP3848664 A1 EP 3848664A1 EP 19858007 A EP19858007 A EP 19858007A EP 3848664 A1 EP3848664 A1 EP 3848664A1
Authority
EP
European Patent Office
Prior art keywords
tube
heat transfer
transfer tube
heat
fin set
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
EP19858007.8A
Other languages
German (de)
English (en)
Other versions
EP3848664A4 (fr
Inventor
Zhiqiang Huang
Kaiyun ZHENG
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.)
Shanghai Power Equipment Research Institute Co Ltd
Original Assignee
Shanghai Power Equipment Research Institute Co 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 Shanghai Power Equipment Research Institute Co Ltd filed Critical Shanghai Power Equipment Research Institute Co Ltd
Publication of EP3848664A1 publication Critical patent/EP3848664A1/fr
Publication of EP3848664A4 publication Critical patent/EP3848664A4/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/20—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being attachable to the element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F28F1/422—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element with outside means integral with the tubular element and inside means integral with the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F28F2001/428—Particular methods for manufacturing outside or inside fins

Definitions

  • the present invention relates to a heat exchange tube for heat transfer, in particular to a compact gas-gas heat exchange tube and methods for manufacturing and using the same, and belongs to the technical field of efficient and compact heat exchangers.
  • heat transfer tubes are basic heat exchange devices and widely applied to shell-and-tube heat exchangers, tube-sheet heat exchangers, finned tube heat exchangers, boilers, tubular heaters, etc.
  • a heat transfer area will become vary large, such that the efficient heat exchange effect can't be realized in limited space, and the requirements of the supercritical carbon dioxide cycle devices in terms of efficiency and size can't be met either.
  • the heat transfer area can be expanded, the heat transfer surface and the heat transfer coefficient may be increased as well, so that the heat exchange performance can be improved.
  • Planes of existing fins of finned tubes are perpendicular to the tubes axially, namely horizontal fins, and the finned tubes belong to incomplete reverse flow exchange.
  • a technical problem to be solved by the present invention is how to realize complete reverse flow efficient heat transfer in a limited space and under a heat exchange working condition of a small tube number mean temperature difference.
  • the heat exchange tube includes:
  • a heat transfer tube configured to separate an in-tube fluid from an out-tube fluid, and achieve, through convection and heat conduction manners, heat transfer between the in-tube fluid and the out-tube fluid;
  • an inner fin set configured to expand a heat exchange surface on an inner side of the heat transfer tube to form a micro-channel with an equivalent diameter of 0.5 mm-5 mm, separate the in-tube fluid to make the same to axially flow along the heat transfer tube, and produce a turbulence effect and enhance heat convection as well;
  • an outer fin set configured to expand a heat exchange surface on an outer side of the heat transfer tube, form a micro-channel to restrict the out-tube fluid from axially and reversely flowing along the heat transfer tube, and produce a turbulence effect and enhance heat convection as well,
  • a positioning tube configured to fix the inner fin set is arranged inside the heat transfer tube, the positioning tube being coaxially arranged inside the heat transfer tube, and one end of each fin in the inner fin set being connected to the positioning tube.
  • a fin structure of the inner fin set is in a structure radically extending from a tube center to a tube wall.
  • a fin structure of the inner fin set is in a Y-shaped structure.
  • the inner fin set are metal sheets or metal strips radially parallel to the heat transfer tube, and the inner fin set is connected to an inner wall of the heat transfer tube.
  • the inner fin set are metal sheets or metal strips arranged, around the positioning tube, in a circumferential structure, and surface of the metal sheets or the metal strips is axially parallel to the heat transfer tube.
  • a width of the metal sheets or the metal strips accounts for 1/4-1 of an inner diameter of the heat transfer tube, and a thickness of the metal sheets or the metal strips is 0.2 mm-1.5 mm.
  • the outer fin set are metal sheets or metal strips arranged, around the heat transfer tube, in a circumferential symmetric structure, and surface of the metal sheets or the metal strips is axially parallel to the heat transfer tube.
  • the outer fin set are metal sheets or metal strips radially parallel to the heat transfer tube, and the outer fin set is connected to an outer wall of the heat transfer tube.
  • a width of the metal sheets or the metal strips accounts for 1/4-1 of an inner diameter of the heat transfer tube, and a thickness of the metal sheets or the metal strip is 0.2 mm-3 mm.
  • the hole on each fin of the inner fin set is in random shape, and the hole on each fin of the outer fin set is in random shape.
  • the positioning tube is a hollowed tube.
  • the heat transfer tube is a metal tube which may stand a specified temperature and pressure, and the metal tube may be a tube of any cross section or any profiled tube.
  • the inner fin set and the outer fin set are made to be fixedly connected to the heat transfer tube.
  • the present invention provides a method for manufacturing the above compact gas-gas heat exchange tube.
  • the method includes steps:
  • the present invention further provides a method for manufacturing a compact gas-gas heat exchange tube.
  • the method includes steps:
  • the inner fin set (3) is connected to an inner wall of the heat transfer tube (1) fixing the outer fin set (2).
  • the present invention provides a method for using a compact gas-gas heat exchange tube equipped with a positioning tube.
  • the method includes steps: arranging at least one heat transfer tube in a heat exchanger, wherein an in-tube fluid of the heat transfer tube is input through an in-tube fluid inlet end of the heat exchanger, flows, along an inner side of the heat transfer tube, to an outlet end of the heat transfer tube, and then flows to an in-tube fluid outlet end of the heat exchanger; in a flow process, the in-tube fluid of the heat transfer tube is subjected to a heat convection process with an inner fin set and an inner side surface of the heat transfer tube; an out-tube fluid of the heat transfer tube is input through an out-tube fluid inlet end of the heat exchanger, flows, along an outer side of the heat transfer tube, in a direction opposite that of the in-tube fluid of the heat transfer tube, and flows to an out-tube fluid outlet end of the heat exchanger; and in a flow process, the out-tube fluid of the heat transfer tube is subjected to
  • the present invention further provides a method for using the compact gas-gas heat exchange tube equipped with the positioning tube.
  • the method includes steps: arranging at least one heat transfer tube in a heat exchanger, wherein an in-tube fluid of the heat transfer tube is input through an in-tube fluid inlet end of the heat exchanger, flows, along an inner side of the heat transfer tube, to an outlet end of the heat transfer tube, and then flows to an in-tube fluid outlet end of the heat exchanger; in a flow process, the in-tube fluid of the heat transfer tube is subjected to a heat convection process with an inner fin set, the positioning tube and an inner side surface of the heat transfer tube; an out-tube fluid of the heat transfer tube is input from an out-tube fluid inlet end of the heat exchanger, flows, along an outer side of the heat transfer tube, in a direction opposite that of the in-tube fluid of the heat transfer tube, and flows to an out-tube fluid outlet end of the heat exchanger; and in the flow process, the out-tube fluid of the heat transfer tube is subjecte
  • the in-tube fluid of the heat transfer tube flows through the hole on the fin of the inner fin set and axially flows along the heat transfer tube;
  • the out-tube fluid of the heat transfer tube flows through the hole on the fin of the outer fin set and axially flows along the heat transfer tube;
  • reverse flow heat exchange is performed between the in-tube fluid and the out-tube fluid of the heat transfer tube; a heat exchange surface on an inner side of the heat transfer tube is expanded by the inner fin set, a micro-channel is formed to restrict the in-tube fluid from axially and reversely flowing along the heat transfer tube, and a turbulence effect is produced and heat convection is enhanced as well; and a heat exchange surface on an outer side of the heat transfer tube is expanded by the outer fin set, a micro-channel is formed to restrict the out-tube fluid from axially and reversely flowing along the heat transfer tube, and a turbulence effect is produced and heat convection is enhanced as well.
  • the compact gas-gas heat exchange tube provided by the present invention has the following beneficial effects: the present invention provides the compact gas-gas heat exchanger, which realizes complete reverse flow efficient heat transfer in a limited space and under a heat exchange working condition of a small tube number mean temperature difference.
  • 1-heat transfer tube 2-outer fin set, 3-inner fin set, and 4-positioning tube.
  • Fig. 2 is a schematic diagram of a compact gas-gas heat exchange tube provided by this embodiment.
  • the compact gas-gas heat exchange tube includes:
  • the heat exchange tube is further characterized in one or more points below, which may be combined in any quantity and sequence, for example, one end, extending to an inner wall of the heat transfer tube 1, of each fin of the inner fin set 3 may be connected to the heat transfer tube 1, or not, and the positioning tube 4 may be selected from a solid tube or a hollowed tube.
  • Fig. 3 is a schematic diagram of a compact gas-gas heat exchange tube provided by this embodiment.
  • the compact gas-gas heat exchange tube includes:
  • the heat exchange tube is further characterized in one or more points below, which may be combined in any quantity and sequence, for example, one end, extending to an inner wall of the heat transfer tube 1, of each fin of the inner fin set 3 may be connected to the heat exchange tube 1, or not, and the positioning tube 4 may be selected from a solid tube or a hollowed tube.
  • Fig. 4 is a schematic diagram of a compact gas-gas heat exchange tube provided by this embodiment.
  • the compact gas-gas heat exchange tube includes:
  • the heat exchange tube is further characterized in one or more points below, which may be combined in any quantity and sequence, for example, one end, extending to an inner wall of the heat transfer tube 1, of each fin of the inner fin set 3 may be connected to the heat transfer tube 1, or not, and the holes of each fin of the inner fin set 3 may be symmetrically arranged, or randomly arranged.
  • Fig. 5 is a schematic diagram of a compact gas-gas heat exchange tube provided by this embodiment.
  • the compact gas-gas heat exchange tube includes:
  • the heat exchange tube is further characterized in one or more points below, which may be combined in any quantity and sequence, for example, one end, extending to an inner wall of the heat transfer tube 1, of each fin of the inner fin set 3 may be connected to the heat exchange tube, or not, and the holes of each fin of the inner fin set 3 may be symmetrically arranged, or randomly arranged.
  • Fig. 6 is a schematic diagram of a compact gas-gas heat exchange tube provided by this embodiment.
  • the compact gas-gas heat exchange tube includes:
  • Fig. 7 is an expanded schematic diagram of an externally-vertical-fin and internally-vertical-fin circular tube.
  • a represents an equivalent diameter of the inner fin 3
  • b represents an equivalent diameter of the outer fin 2
  • t represents a wall thickness of the heat transfer tube 1.
  • the heat exchange tube is further characterized in one or more points below, which may be combined in any quantity and sequence.
  • One end, extending to an inner wall of the heat transfer tube, of each fin of the inner fin set 3 may be connected to the heat transfer tube, or not, for example: the positioning tube 4 may be selected from a solid tube or a hollowed tube, and the holes of each fin of the outer fin set 2 or the holes of each fin of the inner fin set 3 may be symmetrically arranged, or randomly arranged.
  • Fig. 8 is a schematic diagram of a compact gas-gas heat exchange tube provided by this embodiment.
  • the compact gas-gas heat exchange tube includes:
  • the heat exchange tube is further characterized in one or more points below, which may be combined in any quantity and sequence, for example, one end, extending to an inner wall of the heat transfer tube, of each fin of the inner fin set 3 may be connected to the heat transfer tube, or not.
  • the holes of each fin of the inner fin set 3 may be symmetrically arranged, or randomly arranged.
  • the manufacturing method may be combined, in any quantity and sequence, with one or more relevant limits below.
  • a positioning tube 4 configured to fix the inner fin set 3 is arranged inside the heat transfer tube 1, the positioning tube 4 being coaxially arranged inside the heat transfer tube 1, and one end of each fin in the inner fin set 3 being connected to the positioning tube 4.
  • the inner fin set 3 is connected to an inner wall of the heat transfer tube 1, which fixedly connected to the outer fin set 2.
  • this embodiment further provides a method for using the above compact gas-gas heat exchange tube.
  • the method includes the following steps:
  • an in-tube fluid of each heat transfer tube 1 is input through the inlet end (for example, the inlet of the header of the shell-and-tube heat exchanger) of the heat transfer tube 1, and flows, along the inner side of the heat transfer tube 1, to the outer end of the heat transfer tube 1.
  • the in-tube fluid of the heat transfer tube 1 is subjected to heat convection and heat transfer process with the inner fin set of the heat transfer tube 1, the positioning tube and the inner side surface of the heat transfer tube.
  • the out-tube fluid of the heat transfer tube 1 is input through the out-tube fluid inlet end (for example, the inlet of the housing of the shell-and-tube heat exchanger) of the heat exchanger, flows, along the outer side of the heat transfer tube 1, in a direction opposite that of the in-tube fluid of the heat transfer tube 1, and flows to the out-tube fluid outlet end of the heat exchanger.
  • the out-tube fluid flows through the hole of the outer fin set, and axially flow along the heat transfer tube 1.
  • the out-tube fluid is subjected to the heat transfer process with the outer side surface of the heat transfer tube 1 and the outer fin set, and a heat transfer process is performed among the outer fin set, the heat transfer tube and the inner fin set and the positioning tube.
  • Fig. 9 is a structural schematic diagram of a micro-channel heat exchanger.
  • c represents a horizontal equivalent diameter of a micro-channel heat exchanger
  • d represents a vertical equivalent diameter of the micro-channel heat exchanger.
  • Fig. 10 is a structural schematic diagram of a printed circuit board.
  • e represents an equivalent diameter of a printed circuit board type heat exchanger.
  • Fig. 7 is a structure of an inner-outer-fin tube
  • Fig. 9 is a micro-tube structure
  • Fig. 10 is a printed circuit board-type structure Not perforated 900m 2 /m 3 Perforated 1200-1500 m 2 /m 3 1099 m 2 /m 3 1058 m 2 /m 3
  • the heat exchanger apparatus manufactured by the present invention may achieve a smaller contour size and a smaller weight.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Fuel Cell (AREA)
EP19858007.8A 2018-09-05 2019-08-30 Tube d'échange de chaleur gaz-gaz compact et procédés de fabrication et d'utilisation associés Pending EP3848664A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811030768.8A CN109059601A (zh) 2018-09-05 2018-09-05 一种紧凑型气体-气体换热管及其制造和使用方法
PCT/CN2019/103749 WO2020048401A1 (fr) 2018-09-05 2019-08-30 Tube d'échange de chaleur gaz-gaz compact et procédés de fabrication et d'utilisation associés

Publications (2)

Publication Number Publication Date
EP3848664A1 true EP3848664A1 (fr) 2021-07-14
EP3848664A4 EP3848664A4 (fr) 2021-11-17

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EP19858007.8A Pending EP3848664A4 (fr) 2018-09-05 2019-08-30 Tube d'échange de chaleur gaz-gaz compact et procédés de fabrication et d'utilisation associés

Country Status (6)

Country Link
US (1) US20210310752A1 (fr)
EP (1) EP3848664A4 (fr)
JP (1) JP2021535994A (fr)
KR (1) KR102559356B1 (fr)
CN (1) CN109059601A (fr)
WO (1) WO2020048401A1 (fr)

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CN107976101B (zh) * 2017-12-22 2023-07-14 上海发电设备成套设计研究院有限责任公司 一种外翅片换热管的使用方法
CN109059601A (zh) * 2018-09-05 2018-12-21 上海发电设备成套设计研究院有限责任公司 一种紧凑型气体-气体换热管及其制造和使用方法
CN110296609A (zh) * 2019-05-23 2019-10-01 江苏华冶钙业有限公司 一种氧化钙煅烧炉的烟气中央处理系统
CN112487681B (zh) * 2020-11-30 2022-05-17 北京航空航天大学 一种考虑制造约束的阵列微流道换热器性能优化方法
CN114575785B (zh) * 2022-05-06 2022-07-26 四川安硕石油工程技术服务有限公司 油气井超临界二氧化碳压裂用井口加热装置

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Also Published As

Publication number Publication date
CN109059601A (zh) 2018-12-21
KR102559356B1 (ko) 2023-07-24
EP3848664A4 (fr) 2021-11-17
JP2021535994A (ja) 2021-12-23
US20210310752A1 (en) 2021-10-07
WO2020048401A1 (fr) 2020-03-12
KR20210046045A (ko) 2021-04-27

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