EP0901601B1 - Echangeur de chaleur - Google Patents

Echangeur de chaleur Download PDF

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Publication number
EP0901601B1
EP0901601B1 EP97925886A EP97925886A EP0901601B1 EP 0901601 B1 EP0901601 B1 EP 0901601B1 EP 97925886 A EP97925886 A EP 97925886A EP 97925886 A EP97925886 A EP 97925886A EP 0901601 B1 EP0901601 B1 EP 0901601B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
capillary tubes
exchanger according
foam
fluid
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
EP97925886A
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German (de)
English (en)
Other versions
EP0901601A1 (fr
Inventor
Donald Dipl.-Ing. Herbst
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Individual
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Individual
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Publication of EP0901601A1 publication Critical patent/EP0901601A1/fr
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Expired - Lifetime 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
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/003—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by using permeable mass, perforated or porous materials
    • 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
    • F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
    • F28D5/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/062—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing tubular conduits
    • 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

Definitions

  • the invention relates to a heat exchanger according to the Preamble of claim 1.
  • Such heat exchangers are used, for example, in Cooling towers used.
  • By evaporative cooling of the water is the heat from the brine to the outside air dissipated.
  • the pipe register made of 15 mm thick stainless steel pipes.
  • large heat exchange surfaces are required is the construction of a cooling tower with high costs connected.
  • Steel pipes used are financial Expenditure for the heat exchanger is still very large and also the space requirement considerably. It will therefore generally only closed cooling towers with relative low efficiencies or despite the risk of Pollution open cooling towers where the brine is sprayed directly into an air stream.
  • a heat exchanger with a pipe register which is a fluid to be cooled or heated is performed, the pipe register in direct current sprinkled with the fluid with water and in countercurrent air flows through to the fluid, which air, for example can be used in a closed cooling tower is to create that despite low cost has a high efficiency and a compact Design.
  • the pipe register made of parallel
  • capillary tubes which are folded in such a way that they to form superimposed layers of the pipe register by one or more perpendicular to it Longitudinal lines are bent back, and that the spaces between the capillary tubes at least are partially filled with foam, is compared to conventional heat exchangers Heat exchange surface on the one hand through the capillary tubes, which have a much smaller diameter than have the previously used pipes, and secondly multiplied by the use of the foam.
  • the advantageous plastic capillary tubes and the foam is inexpensive to manufacture.
  • the foam advantageously consists of between neighboring ones Layers of mats arranged in the capillary tubes or is the space between the capillary tubes completely foamed.
  • a conventional smooth tube heat exchanger made of tubes with an outer diameter of, for example, 15 mm and a depth of 100 cm has a heat exchange area of 60 m 2 per m 2 of air entry area.
  • this area already increases to five times, namely 300 m 2 / m 2 of the air inlet area.
  • the foam takes up about 50% of the heat exchanger volume, so that the length of the capillary tubes is reduced by about 50% becomes. Nevertheless, the heat exchange area of the heat exchanger increases to approximately 800 m 2 / m 2 of air entry area, since the foam itself has an inner surface of approximately 1200 m 2 / m 3 .
  • the capillary tubes On the surface of the capillary tubes there is a and heat exchange between that through the capillary tubes flowing fluid, preferably brine, the over the capillary tubes pouring water and this counter-flowing air instead while in the foam only a mass and heat transfer between the water and the air takes place.
  • fluid preferably brine
  • capillary tubes 1 has several layers of capillary tubes 1 running parallel to one another Plastic on that have a diameter up to about Can have 5 mm.
  • the individual capillary tubes 1 are as seen in Fig. 3 folded meandering, so that they each extend over several layers.
  • brine to be cooled is fed, which the respective Capillary tube 1 at its lower end in the cooled Condition again.
  • the tube register consisting of the capillary tubes 1 is evenly sprinkled with water from above and flows through air supplied from below. Since the Conduction of the brine from top to bottom is located they co-current with the water and with the air in counterflow. The one for evaporation of the water required heat is removed from the brine, so that this is cooled.
  • Fig. 1 is between two adjacent layers Capillary tubes 1 arranged a mat made of foam 2. Such a mat is preferably located between all adjacent capillary tube layers. By the large inner surface of the foam 2 the available to evaporate the water Surface multiplied, so that the cooling effect is significantly improved.
  • Fig. 2 shows a heat exchanger in which the tube register consisting of the capillary tubes 1 was foamed in the block, so that the entire space between the capillary tubes 1 is filled with foam 2.
  • the heat exchange surface can thus be increased to approximately 1200 m 2 / m 2 air inlet surface under the conditions mentioned in the previous example.
  • Fig. 3 shows schematically the use of the heat exchanger in a closed cooling tower. In this is the air in a known manner before the introduction in the heat exchanger in an upstream packing 3 adiabatic pre-cooled by evaporation and cleaned at the same time.
  • the foam mats can cross to the longitudinal direction the capillary tubes 1 should be wave-shaped.
  • the pipes are fixed in their position and have a fixed distance from each other. Farther can lead several capillary tubes in parallel to avoid a pressure drop on the water side.
  • the heat exchanger according to the invention is not only for Cooling the fluid flowing through the capillary tubes usable, but can also be used for the reverse Heat and mass transport can be used. If the Temperature of the fluid below the temperature of the supplied Air is cooled and dehumidified become.
  • the concentration of a saline solution increase by this through the heat exchanger sprinkled and the necessary heat of evaporation over the fluid is supplied.
  • this process can also vice versa to the air flowing through to cool.
  • the salt water then becomes over the fluid cooled below the dew point temperature of the air so that Water vapor from the air passes into the saline solution.
  • the heat of condensation released in the process is transferred to the fluid drained.
  • the Pipes can be made in a two-stage extruder in which in the first stage the Capillary tube itself and in the second stage that Foam layer forming material are extruded.
  • the foam layer is useful as the base material the material of the capillary tubes, for example Polypropylene, being used in addition is mixed with a foaming agent.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (14)

  1. Echangeur de chaleur comportant un registre tubulaire par lequel circule un fluide à réchauffer ou à refroidir, le registre tubulaire étant arrosé avec de l'eau dans le sens d'écoulement du fluide et étant parcouru par de l'air dans le sens inverse à celui du fluide, et le registre se composant de tubes capillaires (1) disposés parallèlement les uns aux autres, lesquels sont pliés de façon telle qu'ils sont respectivement recourbés autour d'une ou de plusieurs lignes perpendiculaires à leur direction longitudinale pour former des couches du registre tubulaire disposées les unes sur les autres, caractérisé en ce que les espaces entre les tubes capillaires (1) sont au moins partiellement comblés par un produit alvéolaire (2).
  2. Echangeur de chaleur selon la revendication 1, caractérisé en ce que les couches de tubes capillaires (1) adjacentes les unes aux autres sont respectivement séparées par une natte de produit alvéolaire.
  3. Echangeur de chaleur selon la revendication 2, caractérisé en ce que les nattes de produit alvéolaire sont réalisées en ondulé pour spécifier des écartements définis entre les tubes capillaires (1) disposés parallèlement.
  4. Echangeur de chaleur selon la revendication 1, caractérisé en ce que l'écartement entre les tubes capillaires (1) est entièrement rempli de produit alvéolaire.
  5. Echangeur de chaleur selon la revendication 1, caractérisé en ce que les tubes capillaires (1) sont respectivement recouverts d'une couche de produit alvéolaire.
  6. Echangeur de chaleur selon la revendication 5, caractérisé en ce que les tubes capillaires (1) et la couche de produit alvéolaire se composent du même matériau.
  7. Echangeur de chaleur selon l'une des revendications 1 à 6, caractérisé en ce que les tubes capillaires (1) se composent de matière plastique.
  8. Echangeur de chaleur selon l'une des revendications 1 à 7, caractérisé en ce que les tubes capillaires (1) présentent un diamètre compris entre environ 2 et 5 mm.
  9. Echangeur de chaleur selon l'une des revendications 1 à 8, caractérisé en ce que l'écartement réciproque des couches des tubes capillaires (1) est compris entre environ 5 et 10 mm.
  10. Echangeur de chaleur selon l'une des revendications 1 à 9, caractérisé en ce que le produit alvéolaire (2) possède une porosité comprise entre environ 10 et 30 ppp (pores par pouce).
  11. Echangeur de chaleur selon l'une des revendications 1 à 10, caractérisé en ce que le fluide est de la saumure.
  12. Echangeur de chaleur selon l'une des revendications 1 à 11, caractérisé en ce qu'il est installé dans une tour de refroidissement.
  13. Procédé de fabrication d'un échangeur de chaleur selon la revendication 5 ou 6, caractérisé en ce que les tubes capillaires (1) recouverts de la couche de produit alvéolaire sont fabriqués par extrusion, chaque tube capillaire (1) étant fabriqué lors d'une première étape et le matériau formant la couche de produit alvéolaire étant fabriqué lors d'une seconde étape.
  14. Procédé selon la revendication 13, caractérisé en ce que, lors de la seconde étape, on utilise le même matériau que celui de la première étape, en y mélangeant cependant un agent moussant.
EP97925886A 1996-05-30 1997-05-23 Echangeur de chaleur Expired - Lifetime EP0901601B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19623245A DE19623245C2 (de) 1996-05-30 1996-05-30 Wärmetauscher
DE19623245 1996-05-30
PCT/DE1997/001091 WO1997046845A1 (fr) 1996-05-30 1997-05-23 Echangeur de chaleur

Publications (2)

Publication Number Publication Date
EP0901601A1 EP0901601A1 (fr) 1999-03-17
EP0901601B1 true EP0901601B1 (fr) 1999-12-15

Family

ID=7796620

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97925886A Expired - Lifetime EP0901601B1 (fr) 1996-05-30 1997-05-23 Echangeur de chaleur

Country Status (6)

Country Link
US (1) US6145818A (fr)
EP (1) EP0901601B1 (fr)
JP (1) JP2000514542A (fr)
DE (2) DE19623245C2 (fr)
ES (1) ES2142684T3 (fr)
WO (1) WO1997046845A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008034122A1 (de) 2008-07-18 2010-01-21 Herbst, Donald, Dipl.-Ing. Wärmetauscher, Verfahren zum Betreiben des Wärmetauschers und Verwendung des Wärmetauschers in einer Klimaanlage
DE102011112200A1 (de) 2011-08-30 2013-02-28 Donald Herbst Wärmetauscher

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19910441C1 (de) * 1999-03-10 2000-06-21 Fraunhofer Ges Forschung Luftbefeuchtung
DE10203229C1 (de) * 2002-01-21 2003-04-17 Donald Herbst Wärmetauscher
BE1015186A3 (nl) * 2002-11-18 2004-10-05 Atlas Copco Airpower Nv Inrichting voor het gelijktijdig koelen en verwijderen van vocht uit een gas van een compressor.
US7124580B2 (en) * 2004-06-22 2006-10-24 Crown Iron Works Company Sub-zero condensation vacuum system
US20070138662A1 (en) * 2005-12-19 2007-06-21 Chiu Peng C Closed evaporative cooling tower
DE102008013134A1 (de) * 2008-03-07 2009-09-10 Audi Ag Wärmetauschvorrichtung und Verfahren zum Herstellen eines Wärmetauschelements für eine Wärmetauschvorrichtung
CA2630063C (fr) 2007-04-27 2014-02-04 Rush Air Inc. Tour de refroidissement par evaporation et methode
US20120103586A1 (en) * 2008-07-18 2012-05-03 Donald Herbst Heat exchanger, method for operating the heat exchanger and use of the heat exchanger in an air conditioner
CN102581584A (zh) * 2011-01-06 2012-07-18 鑫昇科技股份有限公司 制造热交换器盘管的方法
WO2012111308A1 (fr) * 2011-02-14 2012-08-23 パナソニック株式会社 Échangeur de chaleur et son procédé de fabrication
US9316394B2 (en) 2013-03-12 2016-04-19 Direct Contact, Llc Heat recovery system
EP2982914B1 (fr) * 2014-08-04 2019-06-26 RMG - Rieder Management Ges.m.b.H. Panneau de façade
CZ307896B6 (cs) * 2017-10-24 2019-07-31 Valeo Autoklimatizace K.S. Tepelný výměník s pěnovým žebrováním a způsob jeho výroby
CL2017003498A1 (es) * 2017-12-29 2018-05-04 Ahr Energy Spa Método para producir transferencia de calor entre dos o mas medios y un sistema para ejecutar dicho método.

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US3820353A (en) * 1972-11-09 1974-06-28 Japan Gasoline Evaporative cooling apparatus
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SE7609798L (sv) * 1976-09-06 1978-03-07 Alfa Laval Ab Forfarande for avlegsnande av syre fran och tillsettande av koldioxid till en vetska
US4440698A (en) * 1980-11-10 1984-04-03 Ivan Bloomer Apparatus for ensuring heat exchange between a gas flow and a heat exchanger
DE3216877C1 (de) * 1982-05-03 1983-11-03 Donald Dipl.-Ing. 1000 Berlin Herbst In ein Gehaeuse einbaubares Waermeaustauschelement
EP0140974B1 (fr) * 1983-03-02 1988-07-27 Mitsubishi Denki Kabushiki Kaisha Panneau chauffant
US4461733A (en) * 1983-03-28 1984-07-24 Arvin Industries, Inc. Capillary fin media
JPH03500923A (ja) * 1988-08-26 1991-02-28 キエフスキ　ポリテクニチェスキ　インスチテュート　イメニ　５０‐レティア　ヴェリコイ　オクチャブルスコイ　ソチアリスチチェスコイ　レヴォリューツィ 間接蒸発式ガス冷却装置
CN1048804C (zh) * 1994-06-14 2000-01-26 宏贯股份有限公司 换气式冷风机

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008034122A1 (de) 2008-07-18 2010-01-21 Herbst, Donald, Dipl.-Ing. Wärmetauscher, Verfahren zum Betreiben des Wärmetauschers und Verwendung des Wärmetauschers in einer Klimaanlage
DE102008034122B4 (de) * 2008-07-18 2010-06-02 Herbst, Donald, Dipl.-Ing. Wärmetauscher, Verfahren zum Betreiben des Wärmetauschers und Verwendung des Wärmetauschers in einer Klimaanlage
DE102011112200A1 (de) 2011-08-30 2013-02-28 Donald Herbst Wärmetauscher

Also Published As

Publication number Publication date
DE59700856D1 (de) 2000-01-20
US6145818A (en) 2000-11-14
JP2000514542A (ja) 2000-10-31
ES2142684T3 (es) 2000-04-16
DE19623245A1 (de) 1997-12-04
DE19623245C2 (de) 1999-07-29
WO1997046845A1 (fr) 1997-12-11
EP0901601A1 (fr) 1999-03-17

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