EP0661511A1 - Tuyau d'échange thermique avec élément incorporé - Google Patents

Tuyau d'échange thermique avec élément incorporé Download PDF

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Publication number
EP0661511A1
EP0661511A1 EP94120521A EP94120521A EP0661511A1 EP 0661511 A1 EP0661511 A1 EP 0661511A1 EP 94120521 A EP94120521 A EP 94120521A EP 94120521 A EP94120521 A EP 94120521A EP 0661511 A1 EP0661511 A1 EP 0661511A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
exchanger tube
wire spiral
tube according
tube
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Withdrawn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
EP94120521A
Other languages
German (de)
English (en)
Inventor
Wolfgang Höfs
Jürgen Lohr
Winfried Materne
Franz Dr. Thönnessen
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.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Publication of EP0661511A1 publication Critical patent/EP0661511A1/fr
Withdrawn legal-status Critical Current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
    • F28F1/40—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
    • F28F1/405—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 and being formed of wires

Definitions

  • the invention relates to a heat exchanger tube for liquid / gaseous two-phase systems with a replaceable static installation element.
  • the size of the effective heat transfer area of the tube and also the physical properties of the medium transported in the exchanger tubes, for example its toughness and its thermal conductivity, are decisive for the heat transfer.
  • heat exchanger tubes are equipped with internals. They increase the heat transfer value between the medium and the pipe by increasing the turbulence and increasing the specific transfer area.
  • loop-like, brush-shaped and also helical inserts are used as internals, which generate a higher degree of turbulence and thus lead to higher heat transfer coefficients at low Reynolds numbers.
  • the work area of such operations is mainly in the transition area between laminar and turbulent flow.
  • the invention solves this problem by a heat exchanger tube of the generic type, which is characterized in that the installation element is a wire spiral whose outer diameter is approximately equal to the inner diameter of the heat exchanger tube.
  • the effectiveness of the heat exchanger tube is considerably improved by inserting a wire spiral into the interior of the tube.
  • the spiral has a fixed position inside the pipe, i.e. it is not moved during operation, e.g. shifted in the longitudinal direction.
  • the spiral is still on the inner tube wall or almost on d. that is, its outer diameter is approximately equal to the inner diameter of the heat exchanger tube.
  • the two-phase medium Due to the pressure loss in the upstream systems, the two-phase medium usually enters the horizontally arranged heat exchanger tube as a surge or layer flow.
  • High heat transfer rates with good heat transfer coefficients on the outer wall of the tube are only achieved in areas where the liquid flows on the inner wall of the tube.
  • the one on the inside wall transported gas phase reduces the heat transfer performance.
  • the gas flow in the pipe reduces the heat transfer capacity, particularly in the case of condensation on the pipe outer surfaces. Since the proportion of the liquid phase in the stratified flow is small compared to the gaseous phase, a heat transfer coefficient is finally established, which is determined by the gas flow.
  • the wire spiral inserted into the heat exchanger tube according to the invention preferably consists of materials which are not deformable under the working conditions, for example of metal such as steel or copper.
  • the term wire includes not only spirals made of metals but also those made of plastics such as polypropylene, polytetrafluoroethylene or ceramic.
  • suitable materials for the wire spiral according to the invention enables this Use of the heat exchanger tube for a wide variety of applications. The selection of the material depends primarily on its resistance to the medium flowing in the heat exchanger tube and on the specific area of application.
  • the wire spiral can be adapted to the respective heat exchange problem by changing its slope (pitch), its profile cross section and the thickness of the wire.
  • the pitch of the spiral influences the extent of wetting of the inner tube wall. For example, at high gas entry velocities, it is advisable to use spirals with a small pitch. H. 20 to 80 mm / turn, preferably 40 to 60 mm / turn to use. In this way, the entry pulse of the gas is used to achieve complete wetting of the inner wall.
  • spirals can also be used, the pitch of which can vary along their length, i. H. Spirals that have sections of varying pitch along their length. They can be used to adapt the internal heat transfer to the external one, for example, to set a high rate of evaporation in an inner tube with a high condensation rate on the outer tube.
  • the profile cross section of the wire spiral can also be chosen largely freely, for example it can be round, be oval, rectangular or square, according to the individual requirements of the equipment or process used.
  • the diameter of the wire is also important. It depends on the diameter of the heat exchange tube and is in a ratio of 1: 5 to 1:15, preferably 1: 6 to 1:10. Compliance with these values ensures a high heat transfer with very little impairment of the free cross-section of the heat exchange tube.
  • a particular advantage of the use according to the invention for heat exchanger tubes is the possibility of also using them in apparatus which are already in operation, so that their performance is increased and an enlargement of the heat exchange apparatus becomes unnecessary. In these cases, compared to other possible solutions, it is of particular importance to maintain a large free cross-section in the heat exchanger tube and the associated occurrence of negligible pressure drops in upstream or downstream equipment.
  • the built-in elements according to the invention are loosely inserted into the heat exchange tubes and releasably connected to them.
  • the detachable connection can, for. B. by simply hanging the spiral in the heat exchanger tube or by fastening devices, for. B. screw / nut connections.
  • a wire spiral 2 is arranged in a horizontally arranged heat exchanger tube 1 in such a way that its windings 3 touch the inner wall of the heat exchanger tube 4.
  • the slope (pitch) of the spiral is given by the distance a-b between two turns.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP94120521A 1993-12-31 1994-12-23 Tuyau d'échange thermique avec élément incorporé Withdrawn EP0661511A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4345045 1993-12-31
DE4345045A DE4345045A1 (de) 1993-12-31 1993-12-31 Wärmeaustauschrohr mit Einbauelement

Publications (1)

Publication Number Publication Date
EP0661511A1 true EP0661511A1 (fr) 1995-07-05

Family

ID=6506562

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94120521A Withdrawn EP0661511A1 (fr) 1993-12-31 1994-12-23 Tuyau d'échange thermique avec élément incorporé

Country Status (6)

Country Link
EP (1) EP0661511A1 (fr)
JP (1) JPH07253287A (fr)
KR (1) KR950019617A (fr)
CA (1) CA2139041A1 (fr)
DE (1) DE4345045A1 (fr)
TW (1) TW355617U (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999058919A1 (fr) * 1998-05-13 1999-11-18 Ennio Zulian Tuyau en aluminium adapte a la fabrication d'echangeurs thermiques et echangeurs thermiques fabriques avec ce type de tuyau
WO2005033590A1 (fr) * 2003-10-03 2005-04-14 Johan Siverklev Dispositif d'echange d'humidite entre des flux gazeux
DE102005055016A1 (de) * 2005-11-18 2007-05-24 Tuchenhagen Dairy Systems Gmbh Verfahren und Röhren-Wärmeaustauscher zur thermischen Behandlung hochviskoser Produkte der Nahrungsmittel- und Getränkeindustrie
CN111059954A (zh) * 2019-12-24 2020-04-24 珠海格力电器股份有限公司 一种换热管及空调器及制备换热管的工艺方法
US11499711B2 (en) * 2013-03-15 2022-11-15 8801541 Canada Inc. Liquefied fuel combustor with integrated evaporator device and associated method

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29709073U1 (de) * 1997-05-23 1997-07-17 Behr GmbH & Co., 70469 Stuttgart Wärmetauscher
DE102008030423B4 (de) 2007-12-05 2016-03-03 GIB - Gesellschaft für Innovation im Bauwesen mbH Rohr mit einer durch Noppen Oberflächenprofil-modifizierten Außenmantelfläche
DE102008051812A1 (de) * 2008-10-15 2010-04-29 Gea Air Treatment Gmbh Wärmeaustauscher mit Rohren
DE102010008175B4 (de) * 2010-02-16 2014-12-04 Thesys Gmbh Wärmeübertrager
EP2687808A1 (fr) * 2012-07-18 2014-01-22 Airbus Operations GmbH Dispositif d'homogénéisation, ensemble échangeur de chaleur et procédé d'homogénéisation de la répartition de température dans un flux de fluide
CN107606986A (zh) * 2016-07-11 2018-01-19 珠海格力电器股份有限公司 一种扰流换热管以及换热器
CN107044788B (zh) * 2017-05-09 2019-02-26 山东大学 一种可冷凝的环形分隔装置换热器
CN109115006B (zh) * 2017-05-09 2020-04-24 山东大学 一种气液两相流换热管使用的环形分隔装置
JP7079395B2 (ja) * 2019-02-02 2022-06-02 昭二 酒井 伝熱促進用３次元立体素子および該素子を伝熱管内部に挿入した熱交換器。

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2068955A (en) * 1935-04-04 1937-01-26 Richard W Kritzer Refrigerating coil
JPS6115090A (ja) * 1984-06-29 1986-01-23 Mitsubishi Metal Corp 熱交換器用伝熱管
EP0280612A1 (fr) * 1987-02-23 1988-08-31 Valeo Chausson Thermique Echangeur de chaleur à faisceau tubulaire et à perturbateur interne
DE8912789U1 (de) * 1989-10-28 1990-03-29 Zikeli, Michael, 8039 Puchheim Loser Strömungsbrecher für Bündelrohr-Wärmetauscher

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5221446B1 (fr) * 1970-07-13 1977-06-10
JPS49101953A (fr) * 1973-01-31 1974-09-26
JPS50153347A (fr) * 1974-05-30 1975-12-10
JPS52155454A (en) * 1976-06-18 1977-12-23 Matsushita Electric Ind Co Ltd Heat exchanger
JPS5832294U (ja) * 1981-08-22 1983-03-02 株式会社明電舎 熱交換装置
JPS5937983U (ja) * 1982-09-01 1984-03-10 三井造船株式会社 熱交換器
JPS59200194A (ja) * 1983-04-28 1984-11-13 Sumitomo Metal Ind Ltd 加熱管
JPS60171395A (ja) * 1984-02-16 1985-09-04 Sumitomo Metal Ind Ltd 内面ラセンリブ付加熱管
JPS6115091A (ja) * 1984-06-29 1986-01-23 Mitsubishi Metal Corp 熱交換器用伝熱管
JPH04100671U (fr) * 1991-01-25 1992-08-31
JP4100671B2 (ja) * 2002-10-24 2008-06-11 日鉱金属株式会社 液中の白金とパラジウムの除去方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2068955A (en) * 1935-04-04 1937-01-26 Richard W Kritzer Refrigerating coil
JPS6115090A (ja) * 1984-06-29 1986-01-23 Mitsubishi Metal Corp 熱交換器用伝熱管
EP0280612A1 (fr) * 1987-02-23 1988-08-31 Valeo Chausson Thermique Echangeur de chaleur à faisceau tubulaire et à perturbateur interne
DE8912789U1 (de) * 1989-10-28 1990-03-29 Zikeli, Michael, 8039 Puchheim Loser Strömungsbrecher für Bündelrohr-Wärmetauscher

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 163 (M - 487) 11 June 1986 (1986-06-11) *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999058919A1 (fr) * 1998-05-13 1999-11-18 Ennio Zulian Tuyau en aluminium adapte a la fabrication d'echangeurs thermiques et echangeurs thermiques fabriques avec ce type de tuyau
WO2005033590A1 (fr) * 2003-10-03 2005-04-14 Johan Siverklev Dispositif d'echange d'humidite entre des flux gazeux
US7604689B2 (en) 2003-10-03 2009-10-20 Air To Air Sweden Ab Device for moisture exchange between gas flows
AU2004277574B2 (en) * 2003-10-03 2010-04-29 Air To Air Sweden Ab Device for moisture exchange between gas flows
DE102005055016A1 (de) * 2005-11-18 2007-05-24 Tuchenhagen Dairy Systems Gmbh Verfahren und Röhren-Wärmeaustauscher zur thermischen Behandlung hochviskoser Produkte der Nahrungsmittel- und Getränkeindustrie
DE102005055016B4 (de) * 2005-11-18 2008-04-03 Tuchenhagen Dairy Systems Gmbh Verfahren und Röhren-Wärmeaustauscher zur thermischen Behandlung hochviskoser Produkte der Nahrungsmittel- und Getränkeindustrie
US11499711B2 (en) * 2013-03-15 2022-11-15 8801541 Canada Inc. Liquefied fuel combustor with integrated evaporator device and associated method
CN111059954A (zh) * 2019-12-24 2020-04-24 珠海格力电器股份有限公司 一种换热管及空调器及制备换热管的工艺方法

Also Published As

Publication number Publication date
DE4345045A1 (de) 1995-07-06
KR950019617A (ko) 1995-07-24
CA2139041A1 (fr) 1995-07-01
TW355617U (en) 1999-04-01
JPH07253287A (ja) 1995-10-03

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