EP0162993B1 - Tour de réfrigération humide ou combinée par voies humides et sèches - Google Patents

Tour de réfrigération humide ou combinée par voies humides et sèches Download PDF

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Publication number
EP0162993B1
EP0162993B1 EP84710018A EP84710018A EP0162993B1 EP 0162993 B1 EP0162993 B1 EP 0162993B1 EP 84710018 A EP84710018 A EP 84710018A EP 84710018 A EP84710018 A EP 84710018A EP 0162993 B1 EP0162993 B1 EP 0162993B1
Authority
EP
European Patent Office
Prior art keywords
water
plates
run
zones
structures
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
Application number
EP84710018A
Other languages
German (de)
English (en)
Other versions
EP0162993A1 (fr
Inventor
Hans Dr.-Ing. Sonnenschein
Paul Dr.-Ing. Paikert
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 Luftkuehlergesellschaft Happel GmbH and Co KG
Original Assignee
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 Luftkuehlergesellschaft Happel GmbH and Co KG filed Critical GEA Luftkuehlergesellschaft Happel GmbH and Co KG
Priority to EP84710018A priority Critical patent/EP0162993B1/fr
Priority to DE8484710018T priority patent/DE3465775D1/de
Priority to ZA853767A priority patent/ZA853767B/xx
Priority to IN373CA1985 priority patent/IN163995B/en
Priority to AU42658/85A priority patent/AU570888B2/en
Priority to US06/738,731 priority patent/US4622183A/en
Publication of EP0162993A1 publication Critical patent/EP0162993A1/fr
Application granted granted Critical
Publication of EP0162993B1 publication Critical patent/EP0162993B1/fr
Expired 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
    • F28F25/00—Component parts of trickle coolers
    • F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/90—Cooling towers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/11—Cooling towers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/85—Droplet catchers

Definitions

  • the invention relates to a wet cooling tower or wet / dry cooling tower with heat exchange elements for heat exchange between water and cooling air and with an arrangement for transferring the cooled water into a return for water distribution according to the features in the preamble of claim 1.
  • wet cooling towers or the wet sections of wet / dry cooling towers have so far generally been designed so that the cooling water after leaving the heat exchanger elements, for. B. trickle internals, falls freely down into a collecting basin and is pumped up again from here into the water distribution.
  • the space below the heat exchanger elements also called the rain zone
  • the rain zone causes about 20 to 40% of the total pressure loss.
  • only a maximum of 10% of the total heat transfer takes place in this rain zone.
  • pump outputs due to the drop height of the cooling water, which is approximately equal to the air inflow height, pump outputs of up to approximately 0.5% of the total electrical power plant output are required.
  • the first consideration would be to make the air inflow level smaller in order to reduce the operating costs dependent on the air inflow level.
  • a disadvantage of this would be that if the air inflow level was too low, the cooling tower would only be flowed through unevenly and, in order to achieve the efficiency that could be achieved at a higher air inflow level, overall it would have to be built considerably higher.
  • sloping boards are arranged below the trickle installation, which overlap in the floor plan.
  • the water dripping from the trickle installation onto the boards is directed to walls which adjoin the lower longitudinal edges of the boards at a distance.
  • the upper longitudinal edges of the walls are slightly higher than the lower longitudinal edges of the boards.
  • strips are attached at an angle that is only slightly inclined to the horizontal.
  • the cross section of the strips is designed in such a way that channels are formed by the strips together with the vertical surface areas of the walls, which guide the water flowing down from the boards to the lateral vertical edges of the walls and transfer them there into channels which run vertically at the lower end of the vertical edges extend to these.
  • the channels formed by the strips and the vertical surface areas of the walls extend with their entire length transversely below the boards. Because of this and because of the lateral distance of the walls from the boards, there is a direct water-conducting connection only between the uppermost channel of a wall and the assigned board. The channels below have no direct access to the boards. It is therefore also not possible in the known case that all the channels of a wall can be subjected to the cooled water evenly. Rather, the cooling water will be distributed unevenly over the vertical surface areas of the walls, both horizontally and vertically. This deficiency is then particularly noticeable when a wet cooling tower or a wet / dry cooling tower is operated at partial load. In addition, a condition may arise in which large areas are not used for water drainage at all be used.
  • the invention is based - starting from the features listed in the preamble of claim 1 - the task of creating a wet cooling tower or a wet / dry cooling tower, in which a targeted transfer of the dripping cooling water on the drainage surfaces to the water collection channels is possible without, even at part-load operation, the water guide plates are acted on differently.
  • each individual guide groove is connected to a drainage surface in the subject matter of the invention.
  • the design of the guide groove structures is such that the natural surface tension of the cooling water is used to hold the cooling water against gravity in the laterally open guide groove structures, which have a correspondingly small cross section, and to discharge them into the water collection channels.
  • the cross section of all the guide grooves of a water guide plate is based on the maximum amount of cooling water.
  • the at least one-sided expression of the guide groove structures from the vertical surface areas also ensures that channel-like configurations are present on both sides of the water guide plates. As a result, the cooled water is guided on both sides of the water guide plates from the drainage surfaces to the water collection channels.
  • an expedient embodiment of the invention provides the features of claim 3. In this case, only the upper end sections extending in a vertical plane can be extended into the drainage surfaces. However, it is also conceivable that even inclined longitudinal sections of the guide groove structures extend into the run-off surfaces.
  • a preferred embodiment consists in the features of claim 5, because then the best flow conditions are formed.
  • the cross-section of the guide groove structures is in itself arbitrary. It is only necessary to ensure (claim 6) that the surface tension of the cooling water is fully utilized in order to discharge it correctly against gravity.
  • each water collection channel then only needs to be adjusted to the amount of the cooling water flowing in the guide groove structures assigned to it.
  • the water collection channels can also be kept flatter.
  • separate pumps are assigned to each of the water collection channels located at the same height level, the output and size of which are specifically geared to the amount of cooling water generated there. This also leads to further improvements in terms of the pumping head and thus in terms of reducing the energy requirement.
  • guide groove structures makes it possible to provide very thin-walled water guide plates. These can then be formed from deep-drawn or injection-molded plastic in accordance with the features of claim 10. In particular, they consist of impact-resistant polystyrene. He gives himself an advantageous wall thickness according to the features of claim 12.
  • a further improvement of the cooling water transfer from the drain surfaces to the vertical surface areas is achieved with the features of claim 14.
  • FIGS. 1 and 2 denotes the water distribution of a wet cooling tower on a heat exchanger element 2.
  • the heat exchanger element 2 can, for. B. be formed by trickle internals.
  • a plurality of water guide plates 3 arranged parallel to one another, each having a vertically extending surface area 4 and an inclined drain surface 5 adjoining on the top.
  • the inclination of the drainage surfaces 5 is such that the distance between two adjacent water guide plates 3 is covered so that no cooling water can flow directly from the heat exchanger element 2 between the water guide plates 3.
  • the water guide plates 3 consist of a deep-drawn or injection-molded impact-resistant polystyrene with a wall thickness of 0.5 mm. Their surfaces are coated with a dispersion varnish, which increases the wettability.
  • each water collection channels 7 which are arranged at a distance from one another and are open at the top and feed the cooling water to a pipeline (not shown in more detail), from where the cooling water is again fed directly or indirectly to the water distribution 1.
  • guide groove structures 8 are formed in the vertically extending surface areas 4 of the water guide plates 3 at 20 °, which extend from the upper edges 9 of the vertical surface areas 4 to the lateral vertical edges 6.
  • the guide groove structures 8 can be wave-shaped or meandering. Both embodiments can optionally also have undercut length ranges.
  • the cooling water 15 striking the drainage surfaces 5 reaches the guide groove structures 8: which extend with respect to their upper end sections 10 in a vertical plane.
  • the cross section of the guide groove structures 8 is based on the maximum amount of cooling water. Due to the cross-section of the guide groove structures 8 in connection with the surface tension of the cooling water 15, the cooling water 15 remains in these guide groove structures 8 and is fed to the lateral water collecting channels 7 from the drainage surfaces 5 in a film-like manner.
  • FIG. 1 in FIG. 1 denotes stiffening ribs which impart the required torsional rigidity to the water guide plates 3.
  • FIG. 5 shows that the upper end sections 10 of the guide groove structures 8, which extend in vertical planes, can be extended into the inclined drainage surface 5.
  • FIG. 6 shows that the inclined longitudinal sections 12 of the guide groove structures 8 can also extend into the drainage surface 5, if necessary.
  • FIG. 7 shows an embodiment in which the inclined longitudinal sections 12 of the guide groove structures 8 extend at 45 ° to the horizontal
  • FIG. 8 illustrates an embodiment in which the inclined longitudinal sections 12 of the guide groove structures 8 extend at an angle of 15 ° to the horizontal .
  • stiffening ribs are again designated by 11.
  • FIGS. 9 and 10 show an embodiment of FIG Wasserleitplatten 3, in which these transition areas 9 are rounded.
  • FIGS. 9 and 10 also show that in the regions of the drainage surfaces 5 adjoining the vertically extending surface regions 4, pronounced surface sections 13 (left half of FIG. 10) or tongue-like surface sections 14 (right half of FIG. 10) are provided are. With the help of these surface sections 13, 14, it is possible to direct the cooling water 15 dripping onto the drain surfaces 5 onto both sides of the water guide plates 3, so that they are wetted accordingly. The transfer of the cooling water can be further improved by providing pronounced deflection lugs 16 in the transition area 9 on both sides.

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  • 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)

Claims (14)

1. Tour de réfrigération humide ou tour de réfrigération humide/sèche comportant des éléments d'échangeur de chaleur pour l'échange thermique entre l'eau et l'air de refroidissement ainsi qu'un agencement pour le transfert de l'eau refroidie dans un système de recyclage destiné à la distribution d'eau, laquelle présente au-dessous des éléments d'échangeur de chaleur plusieurs surfaces d'écoulement inclinées, disposees côte à côte, des plaques conductrices d'eau venant se raccorder sur les bords longitudinaux inférieurs des surfaces d'écoulement, lesquelles plaques conductrices d'eau sont munies d'aires de surface verticales et de conduits superposés s'étendant transversalement par rapport au courant d'air de refroidissement essentiellement vertical et présente également sur l'extrémité inférieure des bords verticaux latéraux desdites plaques conductrices d'eau, des chenaux collecteurs d'eau disposés perpendiculairement à ces dernières, les surfaces d'écoulement recouvrant à cette occasion la distance entre deux plaques conductrices d'eau respectivement limitrophes, les conduits présentant une déclivité par rapport à l'horizontale et aboutissant dans les bords verticaux latéraux des plaques conductrices d'eau, caractérisée en ce que les surfaces d'écoulement (5) sont raccordées par des zones de transition (9), de configuration arrondie ou à arête vive, aux aires de surface (4) des plaques conductrices d'eau (3) et en ce que les conduits sont formés par l'estampage au moins sur un côté des aires de surface (4) de structures de rainures de guidaqe (8), lesquelles au moins à partir des zones de transition (9) amènent l'eau de refroidissement (15) aux chenaux collecteurs d'eau (7) en utilisant la tension superficielle de celle-ci depuis les surfaces d'écoulement (5).
2. Dispositif selon la revendication 1, caractérisé en ce que les sections d'extrémité supérieures (10) des structures de rainures de guidage (8) s'étandent dans le plan vertical.
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les structures de rainures de guidage (8) sont prolongées jusque dans les surfaces d'écoulement (5).
4. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les sections longitudinales inclinées (12) des structures de rainures de guidage (8) s'etendent selon un angle de 15° à 45° par rapport à l'horizontale.
5. Dispositif selon l'une quelconque des revendications 1, 2 ou 4, caractérisé en ce que les sections longitudinales inclinées (12) des structures de rainures de guidage (8) s'étendent sous un angle de 20° par rapport à l'horizontale.
6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les structures de rainures de guidage (8) présentent, en section transversale, une configuration ronde ou angulaire.
7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les structures de rainures de guidage (8) présentent, en section transversale, une structure ondulée ou en méandres, éventuellement avec des zones longitudinales réalisées en contre-dépouille.
8. Dispositif selon la revendication 1, caractérisé en ce qu'au moins deux chenaux collecteurs d'eau (7) se superposent à une certaine distance l'un de l'autre le long des bords verticaux (6) des plaques directrices d'eau (3).
9. Dispositif selon la revendication 1 ou 2, caractérisé en ce que dans les zones des surfaces d'écoulement (5) limitrophes des aires de surface (4) s'étendant verticalement sont prévues des ouvertures pour l'entrée de l'eau de refroidissement, par exemple des sections de surface (13, 14) estampées en creux ou embouties en forme de languettes.
10. Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé en ce que les plaques conductrices d'eau (3) sont formées à partir de matière synthétique emboutie profondément ou moulée par injection.
11. Dispositif selon l'une quelconque des revendications 1 à 10, caractérisé en ce que les plaques conductrices d'eau (3) sont formées à partir de polystyrène résistant aux chocs.
12. Dispositif selon l'une quelconque des revendications 1 à 11, caractérisé en ce que les plaques conductrices d'eau (3) présentent une épaisseur de paroi d'environ 0,2 à 1,0, de préférence de 0,5 mm.
13. Dispositif selon l'une quelconque des revendications 1 à 12, caractérisé en ce que les deux surfaces des plaques conductrices d'eau (3) sont revêtues d'une peinture abaissant la mouillabilité.
14. Dispositif selon l'une quelconque des revendications 1 à 13, caractérisé en ce que dans la zone de transition (9) depuis les surfaces d'écoulement inclinées (5) jusque sur les aires de surface verticales (4) sont prévus des appendices déflecteurs (16).
EP84710018A 1984-05-29 1984-05-29 Tour de réfrigération humide ou combinée par voies humides et sèches Expired EP0162993B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP84710018A EP0162993B1 (fr) 1984-05-29 1984-05-29 Tour de réfrigération humide ou combinée par voies humides et sèches
DE8484710018T DE3465775D1 (en) 1984-05-29 1984-05-29 Wet or combined wet-dry cooling tower
ZA853767A ZA853767B (en) 1984-05-29 1985-05-17 Device for transferring the cooling water of a wet cooling tower or a wet/dry cooling tower to a recycling system for water distribution
IN373CA1985 IN163995B (fr) 1984-05-29 1985-05-17
AU42658/85A AU570888B2 (en) 1984-05-29 1985-05-20 Device for transferring cooling water of a net or wet/dry cooling tower to recirculation means
US06/738,731 US4622183A (en) 1984-05-29 1985-05-29 Device for transferring cooling water of a wet or wet/dry cooling tower to recirculation means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84710018A EP0162993B1 (fr) 1984-05-29 1984-05-29 Tour de réfrigération humide ou combinée par voies humides et sèches

Publications (2)

Publication Number Publication Date
EP0162993A1 EP0162993A1 (fr) 1985-12-04
EP0162993B1 true EP0162993B1 (fr) 1987-09-02

Family

ID=8192979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84710018A Expired EP0162993B1 (fr) 1984-05-29 1984-05-29 Tour de réfrigération humide ou combinée par voies humides et sèches

Country Status (6)

Country Link
US (1) US4622183A (fr)
EP (1) EP0162993B1 (fr)
AU (1) AU570888B2 (fr)
DE (1) DE3465775D1 (fr)
IN (1) IN163995B (fr)
ZA (1) ZA853767B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2889479A1 (fr) 2014-05-30 2015-07-01 Balcke-Dürr GmbH Installation géothermique, procédé de fonctionnement d'une installation géothermique et procédé destiné à augmenter le rendement d'une installation géothermique

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5487849A (en) * 1993-12-03 1996-01-30 Tower Tech, Inc. Pultruded cooling tower construction
EP0746407B1 (fr) * 1993-12-03 2001-08-16 Tower Tech, Inc. Systeme de collecte de liquide evacue, a deux niveaux
US5545356A (en) * 1994-11-30 1996-08-13 Tower Tech, Inc. Industrial cooling tower
US5958306A (en) * 1997-10-16 1999-09-28 Curtis; Harold D. Pre-collectors for cooling towers
US7111831B2 (en) * 2002-09-30 2006-09-26 Marley Colling Technologies, Inc. Sound attenuation apparatus and method
KR101120085B1 (ko) * 2003-04-07 2012-03-23 코크-글리취 엘피 물질전달용 칼럼의 액체수집기와 이 칼럼에서 하강하는액체를 수집하고 혼합하는 방법
CN102327846B (zh) * 2011-09-23 2013-05-08 庄景阳 环氧树脂回收板
US11844541B2 (en) * 2017-02-03 2023-12-19 Aggreko, Llc Cooling tower

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE2619407A1 (de) * 1976-05-03 1977-11-17 Balcke Duerr Ag Rieselplatte fuer kuehltuerme

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AT167933B (de) * 1949-01-11 1951-03-27 Viktor Dipl Ing Thausing Rieselwerk
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Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
DE2619407A1 (de) * 1976-05-03 1977-11-17 Balcke Duerr Ag Rieselplatte fuer kuehltuerme

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2889479A1 (fr) 2014-05-30 2015-07-01 Balcke-Dürr GmbH Installation géothermique, procédé de fonctionnement d'une installation géothermique et procédé destiné à augmenter le rendement d'une installation géothermique

Also Published As

Publication number Publication date
AU570888B2 (en) 1988-03-24
US4622183A (en) 1986-11-11
DE3465775D1 (en) 1987-10-08
EP0162993A1 (fr) 1985-12-04
AU4265885A (en) 1985-12-05
ZA853767B (en) 1986-01-29
IN163995B (fr) 1988-12-24

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