EP0160717A1 - Condenseur à surface aéroréfrigérée - Google Patents

Condenseur à surface aéroréfrigérée Download PDF

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Publication number
EP0160717A1
EP0160717A1 EP84105050A EP84105050A EP0160717A1 EP 0160717 A1 EP0160717 A1 EP 0160717A1 EP 84105050 A EP84105050 A EP 84105050A EP 84105050 A EP84105050 A EP 84105050A EP 0160717 A1 EP0160717 A1 EP 0160717A1
Authority
EP
European Patent Office
Prior art keywords
cooling
tubes
cooling air
pipes
rows
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Withdrawn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
EP84105050A
Other languages
German (de)
English (en)
Inventor
Paul Dr.-Ing. Paikert
Heinz Dipl.-Ing. Maass
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.)
GEA Luftkuehler GmbH
GEA Luftkuehlergesellschaft Happel GmbH and Co KG
Original Assignee
GEA Luftkuehler GmbH
GEA Luftkuehlergesellschaft Happel GmbH and Co KG
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 GEA Luftkuehler GmbH, GEA Luftkuehlergesellschaft Happel GmbH and Co KG filed Critical GEA Luftkuehler GmbH
Priority to EP84105050A priority Critical patent/EP0160717A1/fr
Priority to IN370/CAL/84A priority patent/IN161478B/en
Priority to ZA85876A priority patent/ZA85876B/xx
Priority to ES541080A priority patent/ES8603063A1/es
Priority to BR8501352A priority patent/BR8501352A/pt
Publication of EP0160717A1 publication Critical patent/EP0160717A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
    • F28B2001/065—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium with secondary condenser, e.g. reflux condenser or dephlegmator

Definitions

  • the invention is directed to an air-cooled surface condenser for the condensation of vapors by means of ambient air according to the preamble of claim 1.
  • the vaporous medium to be condensed for example water vapor
  • two to four, but possibly also more rows of cooling tubes are usually arranged one behind the other.
  • the cooling tubes are usually designed as finned tubes. and can have a round or oval cross section. The cooling air flow is mostly forced to move.
  • condensation can be subcooled in the front rows of pipes, especially in the row of pipes first affected by the cooling air flow, with the lowest cooling air temperature . Under certain circumstances, the cooling pipes lying here can even freeze.
  • the finned surface of the individual rows of pipes has been enlarged to the same extent as the temperature difference between the cooling air and the steam in the direction of the Cooling air flow reduced from row of pipes to row of pipes, starting from the row of pipes first flowed by the cooling air with the greatest temperature difference and the correspondingly smallest heat exchanger area.
  • the variation in the size of the heat exchanger surface from row of pipes to row of pipes was generally carried out by maintaining the same fin size, but different fin spacings.
  • the invention has for its object to improve the air-cooled surface condenser described in the preamble of claim 1 in such a way that the total condensation performance is considerably increased while avoiding different condensation performance in the individual rows of pipes.
  • the crux of the invention is the displacement of the longitudinal sections on the collecting chamber side at least of the longitudinal sections of the cooling tubes which flow first and last with respect to their distribution chamber side in such a way that in the cooling pipes, the longitudinal sections of which flow towards the distribution chamber, these longitudinal sections with the greatest temperature difference between the cooling air flow and the steam work, while the longitudinal sections on the header side operate with the lowest temperature difference.
  • the total output of the cooling pipes then corresponds to the average of both partial outputs.
  • the longitudinal sections of the distributor arm on which the cooling air flows last these longitudinal sections then work with the smallest temperature difference between the cooling air and the steam, whereas, on the other hand, the longitudinal sections on the header side are now effective with the greatest temperature difference.
  • a particularly advantageous embodiment of the invention is characterized in the features of claim 2.
  • oval or elliptical finned tubes are used, which Due to their design, they enable the number of rows of pipes and the associated effort to determine the cooling pipes to be reduced.
  • the cooling tubes of the two rows are arranged to a certain extent without the condensation performance being adversely affected thereby.
  • the cooling pipes only need to be cranked in the medium direction in the flow direction of the cooling air. This simplifies manufacture and installation. Cooling tubes of this type can also be nested comparatively easily to form a compact, manageable cooling element.
  • the middle row of pipes has cooling pipes extending in a straight line over their entire length. But also here it is ensured that the cooling pipes, the longitudinal sections of which are acted upon by the cooling air at the distributor chamber, are finally flowed to by the cooling air from the longitudinal sections on the collecting chamber side, while the longitudinal sections by the cooling pipes, whose longitudinal sections on the distributor chamber side are last acted upon by the cooling air, now flow to the longitudinal sections of the collecting chamber are first flowed through by the cooling air, so that a matching capacitor performance is achieved in all cooling pipes.
  • the features of claim 7 are particularly advantageous in the case of three-row and multi-row surface capacitors.
  • the position swapping of the pipe length sections can be carried out with relatively simple cranking in the smallest space.
  • housing-like encapsulation can be realized in various ways. It is only important that the straight length sections of the cooling tubes still participate in the heat exchange over their entire length.
  • the invention provides the features of claim 9 so that heat accumulations in the housing-like encapsulated area are avoided.
  • a small amount of ambient air enters and exits the housing through the openings, so that the housing is always flushed with fresh air, so to speak. It is also possible to vent the housing in the longitudinal direction.
  • FIG. 1 denotes a surface condenser which is flowed across by forced cooling air KL.
  • the surface condenser 1 has two rows of cooling tubes R 1 , R 2 arranged one behind the other in the flow direction of the cooling air KL.
  • a larger number of cooling tubes 3, 4 provided with fins 2 are provided in each cooling tube row R 1 , R 2 .
  • All cooling pipes 3, 4 are jointly connected on the one hand to a steam distribution chamber 5 and on the other hand to a condensate collection chamber 6.
  • each cooling tube 3, 4 of both cooling tube rows R 1 , R 2 are guided crosswise.
  • each cooling tube 3, 4 has a length section 8, 9 or 10, 11, which is flowed first by the cooling air KL and lastly by the cooling air KL.
  • the arrangement is such that the distribution chamber side length portions 8 is first 9 last a flow from the cooling air KL and the collecting chamber side length portion of the cooling air KL of the cooling pipe row R 1, 10 whereas the distribution chamber side lengths of the tube row R 2 last the cooling air KL and the collecting section-side longitudinal sections 11 are first flowed to by the cooling air KL.
  • the displacement area 7 of the cooling tubes 3, 4 is formed without ribs.
  • FIG. 2 shows an exemplary embodiment of a surface condenser 15, in which the displacement area 7 of the cooling tubes 3, 4, which is also expediently designed without ribs, is encapsulated in a housing-like manner towards the surroundings. But around heat build-up in the capsule To avoid th dislocation area 7, the housing 12 can be provided with openings 13 through which ambient air can flow in and out.
  • FIG. 2 corresponds to the embodiments in FIGS. 1 and 6.
  • FIG. 3 differs from that of FIGS. 1, 2 and 6 essentially in that the rows of pipes R 1 and R 2 that flow first and last from the cooling air KL have a somewhat larger distance from one another in the direction of flow of the cooling air KL have so that a middle row of tubes R 3 can still be drawn in, but which has rectilinearly extending finned cooling tubes 14 over its entire length.
  • These cooling tubes 14, like the cooling tubes 3, 4 that flow first and last in terms of their length sections 8, 10 from the cooling air KL, are also connected to a common steam distribution chamber 5 and to a common condensate collection chamber 6.
  • FIG. 4 shows a surface condenser 17 with four rows of pipes R 1 , R 42 R 5 , R 2 arranged one behind the other in the flow direction of the cooling air KL. It can be seen that the longitudinal sections 9, 18, 19, 11 of the cooling pipes 3, 20, 21, 4, the longitudinal sections 8, 22, 23, 10 connected to the steam distribution chamber 5 in the flow direction of the cooling air KL in the first, second , third and fourth row of pipes R 1 , R 4 , R 5 , R 2 are arranged in the third, fourth, first and second row of pipes R 5 , R 2 , R 1 , R 4 .
  • the length sections 9, 18, 19, 11 of the cooling pipes 3, 20, 21 are on the collecting space side , 4, whose length sections 8, 22, 23, 10 connected to the steam distribution chamber 5 lie in the flow direction of the cooling air KL in the first, second, third and fourth row of pipes R 1 , R 4 , R 5 , R 2 , in the fourth, third , second and first row of pipes R 2 , R 5 , R 4 , R 1 are arranged.
  • the cooling tubes 3, 4, 14, 20, 21 are provided with ribs 2 of the same size and arranged at the same distance from one another.
  • the embodiments of FIGS. 3 to 5 also expediently have no ribs 2 in the offset area 7. All the offset areas 7 can be provided with a housing-like encapsulation 12 (FIG. 2).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP84105050A 1984-05-04 1984-05-04 Condenseur à surface aéroréfrigérée Withdrawn EP0160717A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP84105050A EP0160717A1 (fr) 1984-05-04 1984-05-04 Condenseur à surface aéroréfrigérée
IN370/CAL/84A IN161478B (fr) 1984-05-04 1984-05-29
ZA85876A ZA85876B (en) 1984-05-04 1985-02-05 Air-cooled surface condenser
ES541080A ES8603063A1 (es) 1984-05-04 1985-03-08 Condensador de superficie refrigerado por aire para la con- densacion de vapores por medio de aire ambiente
BR8501352A BR8501352A (pt) 1984-05-04 1985-03-26 Condensador de superficie refrigerado a ar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84105050A EP0160717A1 (fr) 1984-05-04 1984-05-04 Condenseur à surface aéroréfrigérée

Publications (1)

Publication Number Publication Date
EP0160717A1 true EP0160717A1 (fr) 1985-11-13

Family

ID=8191924

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105050A Withdrawn EP0160717A1 (fr) 1984-05-04 1984-05-04 Condenseur à surface aéroréfrigérée

Country Status (5)

Country Link
EP (1) EP0160717A1 (fr)
BR (1) BR8501352A (fr)
ES (1) ES8603063A1 (fr)
IN (1) IN161478B (fr)
ZA (1) ZA85876B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2688054A1 (fr) * 1992-02-26 1993-09-03 Hamon Ind Thermique Refrigerant de liquide pour installations industrielles telles que centrales electriques.
US6070655A (en) * 1996-06-07 2000-06-06 Valmet Corporation Heat exchanger
US8794820B2 (en) * 2007-03-09 2014-08-05 Sulzer Chemtech Ag Apparatus for the heat-exchanging and mixing treatment of fluid media

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR804122A (fr) * 1936-03-20 1936-10-16 Condenseur à surface pour machines à vapeur à grande puissance, réfrigéré par un courant forcé d'air sec
US2587720A (en) * 1946-03-11 1952-03-04 Lawrence H Fritzberg Heat exchange device
US2640687A (en) * 1950-06-16 1953-06-02 Petro Chem Process Company Inc Flow arrangement for multipass heaters
DE1044125B (de) * 1956-02-15 1958-11-20 Gea Luftkuehler Ges M B H Durch einen zwanglaeufig bewegten Luftstrom gekuehlter Oberflaechenkondensator
US3112793A (en) * 1960-03-04 1963-12-03 Ind Co Kleinewefers Konst Pipe recuperator
DE1942157A1 (de) * 1968-08-20 1970-02-26 Hudson Products Corp Luftgekuehlter Kondensator
US3534806A (en) * 1968-08-01 1970-10-20 K E T G Corp Air conditioning method and system
US4417619A (en) * 1978-06-05 1983-11-29 Sasakura Engineering Co., Ltd. Air-cooled heat exchanger

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR804122A (fr) * 1936-03-20 1936-10-16 Condenseur à surface pour machines à vapeur à grande puissance, réfrigéré par un courant forcé d'air sec
US2587720A (en) * 1946-03-11 1952-03-04 Lawrence H Fritzberg Heat exchange device
US2640687A (en) * 1950-06-16 1953-06-02 Petro Chem Process Company Inc Flow arrangement for multipass heaters
DE1044125B (de) * 1956-02-15 1958-11-20 Gea Luftkuehler Ges M B H Durch einen zwanglaeufig bewegten Luftstrom gekuehlter Oberflaechenkondensator
US3112793A (en) * 1960-03-04 1963-12-03 Ind Co Kleinewefers Konst Pipe recuperator
US3534806A (en) * 1968-08-01 1970-10-20 K E T G Corp Air conditioning method and system
DE1942157A1 (de) * 1968-08-20 1970-02-26 Hudson Products Corp Luftgekuehlter Kondensator
US4417619A (en) * 1978-06-05 1983-11-29 Sasakura Engineering Co., Ltd. Air-cooled heat exchanger

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2688054A1 (fr) * 1992-02-26 1993-09-03 Hamon Ind Thermique Refrigerant de liquide pour installations industrielles telles que centrales electriques.
US6070655A (en) * 1996-06-07 2000-06-06 Valmet Corporation Heat exchanger
US8794820B2 (en) * 2007-03-09 2014-08-05 Sulzer Chemtech Ag Apparatus for the heat-exchanging and mixing treatment of fluid media

Also Published As

Publication number Publication date
BR8501352A (pt) 1986-04-22
ZA85876B (en) 1985-09-25
ES541080A0 (es) 1985-12-01
ES8603063A1 (es) 1985-12-01
IN161478B (fr) 1987-12-12

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19850429

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19860401

R17C First examination report despatched (corrected)

Effective date: 19860822

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19861021

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MAASS, HEINZ, DIPL.-ING.

Inventor name: PAIKERT, PAUL, DR.-ING.