US20080210403A1 - Condensation Plant - Google Patents

Condensation Plant Download PDF

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Publication number
US20080210403A1
US20080210403A1 US11/915,212 US91521206A US2008210403A1 US 20080210403 A1 US20080210403 A1 US 20080210403A1 US 91521206 A US91521206 A US 91521206A US 2008210403 A1 US2008210403 A1 US 2008210403A1
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US
United States
Prior art keywords
shielding wall
wind shielding
heat exchanger
wind
exchanger elements
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.)
Abandoned
Application number
US11/915,212
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English (en)
Inventor
Heinrich Schulze
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 Energietchnik GmbH
Original Assignee
GEA Energietchnik GmbH
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 Energietchnik GmbH filed Critical GEA Energietchnik GmbH
Assigned to GEA ENERGIETECHNIK GMBH reassignment GEA ENERGIETECHNIK GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHULZE, HEINRICH
Publication of US20080210403A1 publication Critical patent/US20080210403A1/en
Abandoned 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
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • 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

Definitions

  • the invention relates to a condensation plant having the features set forth in claim 1 .
  • Condensation plants are utilized for cooling turbines or process exhaust steam and in use in very large sizes for many years in the energy field.
  • the efficiency of a power plant depends to a not insignificant degree on the condensation capacity of the condensation plant.
  • Local weather conditions and accompanying wind speeds and wind directions have a significant impact on the condensation capacity.
  • Current constructions of condensation plants have wind shielding walls which fully surround the heat exchanger elements to prevent a direct recirculation of the heated cooling air.
  • the wind shielding walls are normally arranged vertically or sometimes even slantingly inclined to the outside, depending on prescribed structural regulations.
  • Wind crosses divide the suction space beneath the fans into single zones. It is to be taken into account hereby that the fans are mounted sometimes at a height of up to 50 m. The wind crosses are normally built to a height of about 30% of this free space so that wind coming from the side cannot flow unimpeded beneath the fans but rather is upwardly deflected, when impacting the wind crosses, and directed to the fans. Even though the wind crosses cause an improvement in efficiency and a reduction of the pressure drop of peripheral fans, the flow against the peripheral fans is oftentimes unsatisfactory.
  • the invention is based on the object to reduce the adverse effects of winds that flow from the side against a condensation plant mounted to a support structure.
  • the object is essentially attained by a wind shielding wall which is arranged at an inclination with respect to the wind direction and has a bottom edge which projects further outwards than the top edge thereof.
  • Model calculations confirmed a reduction of added pressure drops as induced by the wind in the order of at least 10%, regardless whether an additional wind cross is arranged beneath the fans.
  • the advantages are especially brought to bear on the fans arranged on the perimeter of the condensation plant, where the pressure drop could be reduced by about 20%.
  • the entire wind shielding wall or also only a section of its height may be configured at an inclination.
  • An angle of inclination from 5° to 35°, in particular from 15° to 30°, in relation to a vertical has been considered appropriate.
  • the angle of inclination may not be so great as to cause a significant cross sectional narrowing that hinders an unobstructed flow of the heated cooling air upwards because this would adversely affect the efficiency.
  • a wind shielding wall of a height of about 10 m may be shifted on its top edge by 1 m to 3 m in the direction of the heat exchanger element. As a result, the cross section is decreased only to an insignificant extent.
  • the bottom edge of the wind shielding wall may in principle also be shifted to the outside. In this way, the inclination can even be increased, without reducing the flow off cross section.
  • the wind shielding wall may be curved concavely in the direction of the heat exchanger elements. Also in this way, a greater portion of the laterally impacting wind is upwardly deflected so that the pressure drop beneath the peripheral fans is smaller. As the volume flow of the upwardly deflected wind increases, an additional barrier of cold air is created which also advantageously counteracts a warm air circulation.
  • the inclination of the wind shielding walls has also advantages in respect to the warm air circulation on the side of the condensation plant that faces away from the wind because the warm air does not flow vertically at the perimeter but flows off further inwards in accordance with the inclination of the wind shielding wall. As a result, the flow path of the recirculating warm air is longer.
  • the wind shielding wall may be provided with a horizontal profiling at least in a height zone adjacent to the bottom edge.
  • Wind shielding walls having trapezoidal profiles are typically erected, whereby the profiling extends in vertical direction, i.e. from bottom to top. This alignment of the profiling has a positive effect on the flow behavior insofar as the wind is deflected downwardly or upwardly. However, especially the downward deflection is unwanted. Therefore, at least the height zone adjacent to the bottom edge may have a profiling which provides a flow barrier. The upper height zone of the wind shielding wall may conversely have a vertical profiling so that the upward flow of wind is not impeded.
  • FIG. 1 shows a prior art calculation model of a condensation plant which is impacted from the side and has a vertical wind shielding wall;
  • FIG. 2 shows a first embodiment of a condensation plant with inclined wind shielding wall
  • FIG. 3 shows a further embodiment of a condensation plant with concavely configured wind shielding wall.
  • FIG. 1 shows a model calculation of a condensation plant 1 as pertaining to the prior art. Wind W flows in the model calculation from the side against the condensation plant.
  • the heat exchanger elements are not shown in detail. Only the steam manifolds 2 which are associated to the heat exchanger elements can be seen in cross section. The heat exchanger elements are arranged in a roof-shaped manner beneath the steam manifolds 2 .
  • Fans 3 shown only schematically, draw cooling air from below, with the heated cooling air flowing past the steam manifolds 2 upwardly. It is clearly shown that not all fans 3 are evenly approached. In particular, the peripheral fan 4 conveys clearly less air than the fans 3 arranged in midsection.
  • the laterally incoming wind W impacts a straight wind shielding wall 5 and is partly deflected upwards, i.e. across the condensation plant 1 , and partly also into the suction space beneath the fans 3 , 4 .
  • a flow barrier 6 as well as a wind cross 7 , the flow direction of the wind W can at least partly be changed so that the wind is directed toward the fans 3 .
  • the pressure in a region, labeled ⁇ P, beneath the fans 4 is smaller than a pressure beneath the other fans 3 .
  • the peripheral fan 4 conveys less cooling air so that the efficiency of the condensation plant 1 is decreased.
  • FIG. 2 shows a greatly simplified representation of the peripheral area of a condensation plant 8 having heat exchanger elements which are arranged on a support structure 9 in several rows in roof-shaped manner and of which only peripheral heat exchanger elements 10 of the outer row are illustrated for the sake of simplicity.
  • a fan 11 which draws cooling air K from below and directs it according to the indicated arrows to the heat exchanger elements 10 where the cooling air K is heated and flows off upwardly in the direction of arrow WL.
  • steam from the steam manifold 12 arranged in the top region of the heat exchanger elements 10 is introduced in direction of the arrows D into the heat exchanger elements 10 , where the steam condenses.
  • Essential in this embodiment of a condensation plant is the configuration of the wind shielding wall 13 which is inclined in relation to the vertical V in the exemplary embodiment of FIG. 2 .
  • the wind shielding wall 13 has a height extending approximately up to the top edge of the steam manifold 12 .
  • the bottom edge 14 of the wind shielding wall 13 projects further outwards than the top edge 15 of the wind shielding wall 13 .
  • the angle of inclination NW is in this exemplary embodiment about 5°.
  • the established inclination of the wind shielding wall 13 enables a greater portion of transversely approaching wind W to be deflected upwards.
  • the pressure differential APL as measured between the inlet side 16 and the outlet side 17 of the fan 11 is smaller than in the case of vertically oriented wind shielding walls.
  • the same effect is realized also when the wind shielding wall is not straight but concavely curved, as shown in the embodiment of FIG. 3 .
  • the bottom edge 19 of the wind shielding wall 18 of FIG. 3 projects further outwards than top edge 20 thereof, with the difference residing in that the wind shielding wall 18 is not straight from the bottom edge 19 to the top edge 20 but is curved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)
US11/915,212 2005-05-23 2006-05-22 Condensation Plant Abandoned US20080210403A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005024156.5 2005-05-23
DE102005024156A DE102005024156B3 (de) 2005-05-23 2005-05-23 Kondensationsanlage
PCT/DE2006/000878 WO2006125419A1 (de) 2005-05-23 2006-05-22 Kondensationsanlage

Publications (1)

Publication Number Publication Date
US20080210403A1 true US20080210403A1 (en) 2008-09-04

Family

ID=36872896

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/915,212 Abandoned US20080210403A1 (en) 2005-05-23 2006-05-22 Condensation Plant

Country Status (14)

Country Link
US (1) US20080210403A1 (ru)
EP (1) EP1883774B1 (ru)
CN (1) CN101213413A (ru)
AP (1) AP2007004175A0 (ru)
AT (1) ATE420331T1 (ru)
AU (1) AU2006251720B2 (ru)
DE (2) DE102005024156B3 (ru)
ES (1) ES2317535T3 (ru)
MA (1) MA29546B1 (ru)
MX (1) MX2007012613A (ru)
RU (1) RU2363903C1 (ru)
TN (1) TNSN07377A1 (ru)
WO (1) WO2006125419A1 (ru)
ZA (1) ZA200710040B (ru)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006031830B4 (de) * 2006-07-07 2008-04-24 Gea Energietechnik Gmbh Kondensationsanlage
DE102007012539B4 (de) * 2007-03-13 2011-03-03 Gea Energietechnik Gmbh Kondensationsanlage
DE102008031221B3 (de) * 2008-07-03 2009-08-13 Gea Energietechnik Gmbh Kondensationsanlage
CN104296552B (zh) * 2014-09-17 2016-08-24 南京航空航天大学 带有吸风塔的新型空冷凝汽器及汽轮机排汽冷凝方法

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3385197A (en) * 1966-08-05 1968-05-28 Greber Henry Wind ejector for cooling towers and stacks
US3689367A (en) * 1969-09-17 1972-09-05 Gea Luftkuehler Happel Gmbh Air-cooled condenser for head fractions in rectifying or distilling columns
US3716097A (en) * 1969-12-11 1973-02-13 Kraftwerk Union Ag Air condensation plant
US3888305A (en) * 1974-02-08 1975-06-10 Gea Happel Gmbh & Co Kg Cooling tower
US3918518A (en) * 1974-03-15 1975-11-11 Hudson Engineering Corp Atmospheric heat exchangers
US3939906A (en) * 1973-12-28 1976-02-24 The Lummus Company Air cooled exchanger
US3987845A (en) * 1975-03-17 1976-10-26 General Atomic Company Air-cooling tower
US4243095A (en) * 1979-02-15 1981-01-06 The Lummus Company Cooling tower
US4450899A (en) * 1980-10-27 1984-05-29 Flakt Aktiebolag Method of regulating an outdoor steam condensor and apparatus for performing said method
US4623494A (en) * 1984-01-25 1986-11-18 Electricite De France Atmospheric cooling tower with reduced vapor cloud
US4662902A (en) * 1984-07-26 1987-05-05 Kraftwerk Union Aktiengesellschaft Evaporation cooling tower
US4690207A (en) * 1984-11-14 1987-09-01 Balcke-Durr Aktiengesellschaft Natural-draft cooling tower with forced-draft flow over reflux condensers
US6474272B2 (en) * 1999-08-10 2002-11-05 Gea Energietechnik Gmbh Apparatus for condensation of steam

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2602058A1 (de) * 1976-01-21 1977-07-28 Krupp Gmbh Kuehlturm
GB2031139A (en) * 1978-10-03 1980-04-16 Renault Tech Nouvelles Process and apparatus for correcting the draught in natural draught dry-process cooling towers
HU221152B1 (en) * 1996-07-17 2002-08-28 Energiagazdalkodasi Intezet Condenser unit working by natural draught and method to exploit it
DE10323791A1 (de) * 2003-05-23 2004-12-09 Gea Energietechnik Gmbh Luftbeaufschlagter Trockenkühler zum Kondensieren von Wasserdampf
ES2301738T3 (es) * 2003-07-10 2008-07-01 Balcke-Durr Gmbh Procedimiento y dispositivo para la conduccion de la corriente de aire dentro de un condensador refrigerado por aire.

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3385197A (en) * 1966-08-05 1968-05-28 Greber Henry Wind ejector for cooling towers and stacks
US3689367A (en) * 1969-09-17 1972-09-05 Gea Luftkuehler Happel Gmbh Air-cooled condenser for head fractions in rectifying or distilling columns
US3716097A (en) * 1969-12-11 1973-02-13 Kraftwerk Union Ag Air condensation plant
US3939906A (en) * 1973-12-28 1976-02-24 The Lummus Company Air cooled exchanger
US3888305A (en) * 1974-02-08 1975-06-10 Gea Happel Gmbh & Co Kg Cooling tower
US3918518A (en) * 1974-03-15 1975-11-11 Hudson Engineering Corp Atmospheric heat exchangers
US3987845A (en) * 1975-03-17 1976-10-26 General Atomic Company Air-cooling tower
US4243095A (en) * 1979-02-15 1981-01-06 The Lummus Company Cooling tower
US4450899A (en) * 1980-10-27 1984-05-29 Flakt Aktiebolag Method of regulating an outdoor steam condensor and apparatus for performing said method
US4623494A (en) * 1984-01-25 1986-11-18 Electricite De France Atmospheric cooling tower with reduced vapor cloud
US4662902A (en) * 1984-07-26 1987-05-05 Kraftwerk Union Aktiengesellschaft Evaporation cooling tower
US4690207A (en) * 1984-11-14 1987-09-01 Balcke-Durr Aktiengesellschaft Natural-draft cooling tower with forced-draft flow over reflux condensers
US6474272B2 (en) * 1999-08-10 2002-11-05 Gea Energietechnik Gmbh Apparatus for condensation of steam

Also Published As

Publication number Publication date
TNSN07377A1 (en) 2009-03-17
MX2007012613A (es) 2008-01-11
RU2363903C1 (ru) 2009-08-10
ATE420331T1 (de) 2009-01-15
AU2006251720A1 (en) 2006-11-30
AP2007004175A0 (en) 2007-10-31
ES2317535T3 (es) 2009-04-16
CN101213413A (zh) 2008-07-02
AU2006251720B2 (en) 2009-05-21
EP1883774B1 (de) 2009-01-07
DE102005024156B3 (de) 2006-10-19
EP1883774A1 (de) 2008-02-06
ZA200710040B (en) 2008-11-26
WO2006125419A1 (de) 2006-11-30
MA29546B1 (fr) 2008-06-02
DE502006002590D1 (de) 2009-02-26

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Legal Events

Date Code Title Description
AS Assignment

Owner name: GEA ENERGIETECHNIK GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SCHULZE, HEINRICH;REEL/FRAME:020145/0639

Effective date: 20071031

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION