EP1259773B1 - Verbesserter wärmetauscher - Google Patents

Verbesserter wärmetauscher Download PDF

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Publication number
EP1259773B1
EP1259773B1 EP01907928A EP01907928A EP1259773B1 EP 1259773 B1 EP1259773 B1 EP 1259773B1 EP 01907928 A EP01907928 A EP 01907928A EP 01907928 A EP01907928 A EP 01907928A EP 1259773 B1 EP1259773 B1 EP 1259773B1
Authority
EP
European Patent Office
Prior art keywords
tubes
primary
fluid
heat transfer
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.)
Expired - Lifetime
Application number
EP01907928A
Other languages
English (en)
French (fr)
Other versions
EP1259773A1 (de
Inventor
Geoffrey Gerald Weedon
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1259773A1 publication Critical patent/EP1259773A1/de
Application granted granted Critical
Publication of EP1259773B1 publication Critical patent/EP1259773B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • 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
    • F28D7/0058—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 for only one medium being tubes having different orientations to each other or crossing the conduit for the other heat exchange medium
    • 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
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids

Definitions

  • the invention concerns improvements in or relating to heat exchangers.
  • the present invention has as its object the provision of a novel heat exchange apparatus wherein heat from a primary fluid contained in primary heat transfer tubes can be transferred to or from a secondary fluid contained in secondary heat transfer tubes by the use of an intermediate fluid flowing outside of, and in flow communication with, both primary and secondary tubes.
  • a heat exchange apparatus in which in use heat from primary fluid contained in primary heat transfer tubes is transferred to or from a secondary fluid contained in secondary heat transfer tubes
  • the apparatus includes a number of parallel primary heat transfer tubes, regularly arrayed, with clearance between each tube in two dimensions perpendicular to their length, with secondary heat transfer tubes arranged in successive rows passing between the primary tubes, each secondary tube row being arranged orthogonally one to the next, each secondary tube row being arranged orthogonally to and in close proximity to the primary tubes, and a fluid flow path for an intermediate fluid is defined around the primary and secondary tubes and extending through the interstices therebetween.
  • the secondary heat recovery tubes may be arranged such that two or more adjacent secondary tube rows in a direction parallel to the primary tubes may be arranged in the same direction, upstream of successive groups of tube rows arranged orthogonally to them.
  • the primary fluid flows inside the primary tubes, whilst the intermediate fluid flows outside the tubes in a direction generally in parallel with the primary fluid, either in a co-current or counter-current direction.
  • the direction of flow of the secondary fluid is generally transverse to the direction of flow of the primary and intermediate fluids.
  • the distance between successive orthogonal rows of secondary tubes is preferably minimised whereby the intermediate fluid is caused to flow around the secondary tubes in a tortuous manner, thereby increasing its turbulence and local heat transfer coefficient against both primary and secondary tubes.
  • the heat exchanger can be fabricated from standard manufactured components.
  • the spacing between the primary and secondary tubes is preferably small, generally at most 0.5 times the secondary tube outside diameter, in order to minimise the superficial surface area available to the intermediate fluid and thereby to maximise its velocity and corresponding heat transfer coefficient.
  • the secondary tubes are in close proximity to and without contact with the primary tubes thereby to eliminate the possibility of tube vibration in the secondary tubes.
  • the secondary tubes may be braced one to another or to additional members to prevent vibration.
  • each successive row of secondary tubes is minimised to provide as tortuous path as possible for the intermediate fluid and to minimise the size of the overall heat exchanger.
  • the distance between successive rows may be in the range 0 - 0.5 times the secondary tube outside diameter.
  • the primary and secondary tubes may be profiled in order to modify the heat transfer characteristics.
  • the tubes may be finned, twisted, shaped, of varying diameters, or contain inserts.
  • Inert shapes may be placed between the secondary tubes and around the primary tubes in a regular or random manner to further promote turbulence and heat transfer.
  • a further variation of the invention may provide for heat transfer from the intermediate fluid to both the primary and secondary fluid, or from both the primary and secondary fluid to the intermediate fluid.
  • primary and secondary fluids may be the same fluid, whilst the primary and secondary tubes may also be connected in parallel or series.
  • the primary and secondary fluids could be water and/or steam with the intermediate fluid being combustion gases for heating same.
  • a still further variation to the utilisation of the apparatus may be the use of different fluid streams within the secondary tubes, flowing either in the same, or reverse, or a transverse directions. In this way heat may be transferred to a number of different fluid streams from the same stream or streams within a single apparatus.
  • the provision of tubes in three dimensions serves to maximise the tube surface area per unit volume of heat exchanger, whilst maximising the tortuosity of the intermediate fluid thereby maximising the overall heat transfer coefficients in an efficient manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Claims (14)

  1. Wärmetauschvorrichtung, bei welcher bei der Verwendung Wärme eines ersten Fluids, welches in ersten Wärmeübertragungsleitungen enthalten ist, zu oder von einem zweiten Fluid transferiert wird, welches in zweiten Wärmeübertragungsleitungen enthalten ist, wobei die Vorrichtung ein Vielzahl von parallelen ersten Wärmeübertragungsleitungen aufweist, die gleichmäßig mit einem Abstand zwischen jeder Leitung in zwei Dimensionen senkrecht zu ihrer Länge angeordnet sind, wobei die zweiten Wärmeübertragungsleitungen in aufeinanderfolgenden Reihen angeordnet sind, welche zwischen den ersten Leitungen verlaufen, wobei jede zweite Leitungsreihe senkrecht zu der nachfolgenden angeordnet ist, wobei jede zweite Leitungsreihe senkrecht zu den ersten Leitungen angeordnet ist,
    dadurch gekennzeichnet, dass
    jede zweite Leitungsreihe in unmittelbarer Nähe zu und ohne Kontakt mit den ersten Leitungen ist, und dass eine Fluidströmungsbahn für ein Zwischenfluid um die ersten und zweiten Leitungen angeordnet ist und sich durch die Zwischenräume zwischen denselben erstreckt.
  2. Vorrichtung nach Anspruch 1, in welcher die zweiten Wärmeübertragungsleitungen derart angeordnet sind, dass zwei oder mehr benachbarte zweite Leitungsreihen in einer Richtung parallel zu den ersten Leitungen in derselben Richtung stromaufwärts von aufeinanderfolgenden Gruppen der Leitungsreihen senkrecht zu denselben angeordnet sind.
  3. Vorrichtung nach einem der vorhergehenden Ansprüche, in welchem bei der Verwendung das primäre Fluid dafür vorgesehen ist, innerhalb der ersten Leitungen zu fließen, und das Zwischenfluid außerhalb der Leitungen in einer zu dem ersten Fluid im wesentlichen parallelen Richtung, in der Gleichstrom- oder der Gegenstrom-Richtung fließt.
  4. Vorrichtung nach einem der vorhergehenden Ansprüchen, in welcher die Strömungsrichtung des zweiten Fluids im wesentlichen quer zu der Strömungsrichtung des ersten und des Zwischenfluids verläuft.
  5. Vorrichtung nach einem der vorhergehenden Ansprüche, in welchem der Abstand zwischen den ersten und den zweiten Leitungen mindestens 0,5 Mal dem Außendurchmesser der zweiten Leitungen beträgt.
  6. Vorrichtung nach einem der vorhergehenden Ansprüche, in welcher der Abstand zwischen jeder nachfolgenden Reihe der zweiten Leitungen in einem Bereich zwischen 0 und 0,5 Mal dem Außendurchmesser der zweiten Leitungen liegt.
  7. Vorrichtung nach einem der vorhergehenden Ansprüche, in welcher die zweiten Leitungen von einander gehalten sind.
  8. Vorrichtung nach einem der vorhergehenden Ansprüche 1 bis 6, in welcher die zweiten Leitungen mittels zusätzlicher Elemente gehalten sind.
  9. Vorrichtung nach einem der vorhergehenden Ansprüche, in welcher die ersten und die zweiten Leitungen profiliert sind, um die Wärmeübertragung zu verbessern.
  10. Vorrichtung nach einem der vorhergehenden Ansprüche, in welcher die ersten und die zweiten Leitungen Einlagen oder Einrichtungen zur Verbesserung der Wärmeübertragung aufweisen.
  11. Vorrichtung nach einem der vorhergehenden Ansprüche, in welcher die ersten und die zweiten Leitungen dasselbe Fluid beinhalten.
  12. Vorrichtung nach Anspruch 11, in welcher die ersten und die zweiten Leitungen entweder in Serie oder parallel verbunden sind.
  13. Vorrichtung nach einem der vorhergehenden Ansprüche 1 bis 8, in welcher die zweiten Leitungen unterschiedliche Fluidströme beinhalten, welche in derselben Richtung oder in Gegenrichtung oder in Querrichtung verlaufen.
  14. Vorrichtung nach einem der vorhergehenden Ansprüche, in welcher inerte Formen die primären und sekundären Leitungen in einer gleichmäßigen oder zufälligen Art und Weise umgeben, um die Wärmeübertragung zu verbessern.
EP01907928A 2000-03-01 2001-02-28 Verbesserter wärmetauscher Expired - Lifetime EP1259773B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0004935 2000-03-01
GB0004935A GB2359881A (en) 2000-03-01 2000-03-01 Improvements in or relating to heat exchangers
PCT/GB2001/000850 WO2001065193A1 (en) 2000-03-01 2001-02-28 Improvements in or relating to heat exchangers

Publications (2)

Publication Number Publication Date
EP1259773A1 EP1259773A1 (de) 2002-11-27
EP1259773B1 true EP1259773B1 (de) 2004-04-28

Family

ID=9886739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01907928A Expired - Lifetime EP1259773B1 (de) 2000-03-01 2001-02-28 Verbesserter wärmetauscher

Country Status (6)

Country Link
EP (1) EP1259773B1 (de)
AT (1) ATE265663T1 (de)
AU (1) AU3579401A (de)
DE (1) DE60103026T2 (de)
GB (1) GB2359881A (de)
WO (1) WO2001065193A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107376604A (zh) * 2017-09-21 2017-11-24 重庆市商顺换热设备有限公司 一种工业发酵废气除湿方法及装置
CN111895442A (zh) * 2019-05-06 2020-11-06 重庆市商顺换热设备有限公司 一种电厂烟气处理系统
CN112097287B (zh) * 2019-06-17 2022-09-30 重庆鑫顺盛达科技有限公司 一种锅炉节能与烟气脱白系统、工艺、应用

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001422A (en) * 1977-07-22 1979-01-31 Carrier Corp Heat exchangers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153446A (en) * 1960-08-12 1964-10-20 United Aircraft Corp Heat exchanger
GB1012135A (en) * 1963-02-20 1965-12-08 Nat Res Dev Heat exchanger
IT1109568B (it) * 1978-10-05 1985-12-23 Fiat Spa Scambiatore di calore
CH657205A5 (it) * 1983-04-22 1986-08-15 Kurier Holding Ag Scambiatore di calore statico ad alta efficienza, particolarmente adatto per il raffreddamento di fluidi viscosi.
IL116309A0 (en) * 1994-12-09 1996-10-31 Tno Method and installation for treating a medium
US5626102A (en) * 1996-03-14 1997-05-06 Nir; Ari Heat recovery system for a boiler and a boiler provided therewith

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001422A (en) * 1977-07-22 1979-01-31 Carrier Corp Heat exchangers

Also Published As

Publication number Publication date
DE60103026D1 (de) 2004-06-03
GB2359881A (en) 2001-09-05
GB0004935D0 (en) 2000-04-19
DE60103026T2 (de) 2005-04-07
ATE265663T1 (de) 2004-05-15
AU3579401A (en) 2001-09-12
WO2001065193A1 (en) 2001-09-07
EP1259773A1 (de) 2002-11-27

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