EP2080976B1 - Echangeur thermique - Google Patents

Echangeur thermique Download PDF

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Publication number
EP2080976B1
EP2080976B1 EP20080017935 EP08017935A EP2080976B1 EP 2080976 B1 EP2080976 B1 EP 2080976B1 EP 20080017935 EP20080017935 EP 20080017935 EP 08017935 A EP08017935 A EP 08017935A EP 2080976 B1 EP2080976 B1 EP 2080976B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
stream line
fluid
segment
flow path
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.)
Not-in-force
Application number
EP20080017935
Other languages
German (de)
English (en)
Other versions
EP2080976A1 (fr
Inventor
Erwin Berger
Ingram Eusch
Thomas Kreiner
Erwin Stricker
Christian Wehling
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.)
Kioto Clear Energy AG
Original Assignee
Kioto Clear Energy AG
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 Kioto Clear Energy AG filed Critical Kioto Clear Energy AG
Publication of EP2080976A1 publication Critical patent/EP2080976A1/fr
Application granted granted Critical
Publication of EP2080976B1 publication Critical patent/EP2080976B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels

Definitions

  • the invention relates to a heat exchanger, also called heat exchanger. It is a device with which heat or thermal energy can be transferred from one stream to another.
  • the invention relates to a heat exchanger with direct heat transfer from one fluid to another fluid. Examples of such heat exchangers are given in the documents FR-2 843 449 and EP 1 054 225 A1 , Such a heat exchanger is for example part of a solar system (connected to solar panels) or a heat pump, which serve the hot water treatment or heating of heating water.
  • the invention relates to all types of heat exchangers, regardless of whether they operate in countercurrent, direct current or cross flow.
  • Plate heat exchangers for the applications mentioned have long been known. Their efficiency, according to the laws of the first law of thermodynamics, depends on the ratio of absorbed thermal energy on the cold side to the energy delivered on the warm side.
  • heat exchangers are increasingly being used as components of solar technology systems and heat pumps.
  • at least one heat exchanger is integrated into the fluid circuit of the solar power plant and at least one further heat exchanger forms a part of the heat pump system.
  • the heated water through a heat exchanger for example, led into a buffer memory, which can be formed "layered", ie with different temperature zones, with warmer water above and colder water is stored below. Difficult is partly the supply of water in the individual temperature zones of the buffer memory.
  • the object of the invention is therefore to provide a heat exchanger to meet as many of the following requirements:
  • the heat exchanger should have the highest possible efficiency. It should work both in summer mode, for example as part of the solar technology system, but also in winter mode when the solar collectors produce little hot water and is usually switched to a heat pump. Finally, it would be advantageous to be able to remove water of different temperature from the heat exchanger to be able to initiate water of different temperature directly into corresponding zones of a buffer storage.
  • a heat exchanger according to the invention is based on the following considerations:
  • the case of application referred to above as the summer operation is basically to be distinguished from the application designated as winter operation.
  • heat is transferred, for example, from a brine of the solar collector to the water
  • second case from a coolant of a heat pump to the water.
  • these different purposes are to be coupled in a heat exchanger.
  • the flow path for the water to be heated is guided so that it can be used both in heat exchange with the brine (for summer operation) and in heat exchange with the refrigerant (for winter operation) can be brought.
  • summer operation may optionally be dispensed with a heat exchange between the refrigerant and water;
  • winter operation if necessary, a heat exchange between brine and water is eliminated.
  • the water to be heated can pass through all zones of the heat exchanger. But it is also possible, for example via a bypass to bridge a portion of the flow path for the water to be heated depending on the application.
  • the first flow path is used, for example, the heating of water and describes a corresponding water cycle.
  • the water is introduced into the heat exchanger via at least a first inlet end (inlet) of low temperature (for example 25 ° C.) and removed via at least a first outlet end (outlet) with elevated temperature (for example 40 ° C. or 65 ° C.).
  • the second flow path describes, for example, the part of a brine circuit of a solar power plant.
  • the brine which is heated for example in a solar collector, enters the heat exchanger via a second inlet end (inlet), for example at 100 ° C., and leaves the heat exchanger at a second outlet end (outlet) at a lower temperature, for example 35 ° C.
  • the first and second flow paths are set up in such a way that the desired heat transfer from the brine to the water takes place.
  • the heat exchanger according to the invention goes beyond, since it comprises a third flow path, which serves to supply a third fluid, for example a refrigerant of a heat pump, and in turn via an inlet into the heat exchanger and via an outlet is led out of this.
  • a third fluid for example a refrigerant of a heat pump
  • this third fluid may undergo heat exchange with the first fluid because the first fluid flow path is extended beyond the area along which the first fluid is heat exchanged with the second fluid (eg brine).
  • the second fluid eg brine
  • a "separation" is provided insofar as the second flow path for the second fluid and the third flow path for the third fluid are separated, so do not enter into heat engineering interaction, but only a heat exchange with the first fluid (for example, water) takes place ,
  • the fluid to be heated usually has a larger flow path than the first or third fluid.
  • the first flow path for the first fluid is continued according to the invention by a discrete channel which extends in particular through the first and second flow paths to the first outlet end of the first flow path, for example perpendicular to the main flow direction in the heat exchanger.
  • the channel is at least partially flowed around, depending on the mode of operation of the heat exchanger, by the second fluid or the third fluid.
  • this results in only a small heat exchange due to low heat exchange surface at high flow rate.
  • the second and third flow paths may be separated by a wall, but which may have a fluidic connection between the first and second portions of the first flow path, around the first flow path both in contact with the second fluid and in contact with the third fluid to be able to bring.
  • the channel for recycling the first fluid may be formed by fluid-tight connections of adjacent wall sections of the third flow path and the second section of the first flow path, and fluid-tight connections of adjacent wall sections of the second flow path and the first section of the first flow path. This is illustrated in the following description of the figures.
  • This measure makes it possible to directly feed water of different temperatures into different zones of a connected buffer tank.
  • the heat exchanger described can be advantageously designed as a plate heat exchanger. It consists for example of wavy profiled plates, which are composed so that in each of the successive spaces once the warming up and once the heat-releasing fluid flows.
  • the plate pack of the heat exchanger is sealed to the outside and between the fluids and is held together, for example by means of screws to form a compact unit.
  • the individual plates of the plate heat exchanger can also be soldered together.
  • a plate heat exchanger is shown in each case.
  • the plates (closed wall sections) are shown as solid lines and denoted uniformly by 10.
  • a first flow path 1 is formed between a first inlet end 1E in the heat exchanger and two outlet ends 1A1, 1A2.
  • the first flow path 1 is symbolized by a cross-hatching and the flow direction is indicated by the arrows 1S.
  • FIG. 1 only four flow areas for the first flow path are shown; in practice this will be much more.
  • a second flow path 2 can be seen, which is shown hatched and leads from a second inlet end 2E at the lower end to a second outlet end 2A at the upper end of the heat exchanger.
  • the flow direction for a second fluid, which is passed through the second flow path 2 is indicated by the arrows 2S.
  • first and second flow paths are arranged in countercurrent.
  • the part of the first flow path 1, which is in heat exchange with the second flow path 2, is in FIG. 1 denoted by 1.1 and represents the first section 1.1 of the first flow path 1.
  • a partition wall 20 can be seen, through which the first flow path 1 in the in FIG. 1 left section of the heat exchanger is passed, where a second section 1.2 of the first flow path 1 connects, the flow direction is here from bottom to top, which in turn is indicated by arrows 1S.
  • the second section 1.2 of the first flow path 1 is formed in countercurrent with a third flow path 3, the details of which FIG. 2 result.
  • the third flow path 3 extends from an entrance end at the top (at 3E) to an exit end 3A (at the bottom).
  • FIGS. 1 . 2 shows that the second flow path 2 is completely separate from the third flow path 3, while the first flow path 1 due to the opening in the partition wall 20 with its first section 1.1 in interaction with the second flow channel 2 and with its section 1.2 in interaction with the third Flow channel 3 is.
  • FIGS. 1 . 2 extend from the second section 1.2 of the first flow path 1, two channels 1.3, 1.4, which extend transversely through the heat exchanger and through the flow paths 3, 2 and 1 to the outlet ends 1A1, 1 A2.
  • the channels 1.3, 1.4 circumferentially, as in a pipeline, bounded by a closed wall.
  • This wall is formed here by fluid-tight connections between the plates 10 defining the first, second and third flow paths.
  • honeycomb geometry according to FIG. 3 results from the (not shown here because known) wavy profiling of the plates 10 within the plate heat exchanger.
  • the operation of the illustrated heat exchanger is for example as follows:
  • FIG. 1 In summer operation ( FIG. 1 ) is cold water at 25 ° C at 1E in the heat exchanger and there occurs in countercurrent in contact with a warm brine, which is supplied at 2E, for example, 100 ° C.
  • the heated to 50 ° C water is passed through the first flow path 1 along the sections 1.1, 1.2 and 1.3 and 1.4 and taken at 1A1 and 1A2 and directed, for example, in a (not shown) buffer memory.

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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 (7)

  1. Echangeur de chaleur avec les caractéristiques suivantes :
    a) une première voie d'écoulement (1) le long de laquelle un premier fluide à réchauffer peut être guidé entre une première extrémité d'entrée (1E) dans l'échangeur de chaleur et au moins une première extrémité de sortie (1A) de l'échangeur de chaleur
    b) une deuxième voie d'écoulement (2) voisine d'une première section (1.1) dans le sens d'écoulement (1S) de la première voie d'écoulement (1), le long de laquelle un deuxième fluide dégageant une chaleur peut être guidé entre une deuxième extrémité d'entrée (2E) dans l'échangeur de chaleur et une deuxième extrémité de sortie (2A) de l'échangeur de chaleur,
    c) une troisième voie d'écoulement (3), voisine d'une deuxième section (1.2) dans le sens d'écoulement (1S) de la première voie d'écoulement (1), le long de laquelle un troisième fluide dégageant une chaleur peut être guidé entre une troisième extrémité d'entrée (3E) et une troisième extrémité de sortie (3A) à travers l'échangeur de chaleur, pour lequel
    d) la première et la deuxième section (1.1, 1.2) de la première voie d'écoulement (1) ainsi que la deuxième et troisième voie d'écoulement (2, 3) sont essentiellement orientées parallèles entre elles
    caractérisé en ce que
    e) au moins une autre section (1.3, 1.4) de la première voie d'écoulement (1), se raccordant du point de vue technique d'écoulement à la deuxième section (1.2) de la première voie d'écoulement (1) mène en tant que conduit discret à travers au moins des parties de la première et deuxième voie d'écoulement (1) à la première extrémité de sortie (1A1, 1A2) de la première voie d'écoulement (1).
  2. Echangeur de chaleur selon la revendication 1 dont la deuxième et troisième voie d'écoulement (2, 3) sont séparées l'une de l'autre par une paroi (20) qui présente un raccord technique d'écoulement entre la première et la deuxième section (1.1, 1.2) de la première voie d'écoulement (1S).
  3. Echangeur de chaleur selon la revendication 1 dont une autre section (1.3, 1.4) de la première voie d'écoulement (1) est limitée en périphérie par des raccords étanches au fluide des sections de paroi voisines de la première voie d'écoulement (1) et de la deuxième section (1.2) de la première voie d'écoulement (1) ainsi que par des raccords étanches au fluide des sections de paroi voisines de la deuxième voie d'écoulement (2) et de la première section (1.1) de la première voie d'écoulement (1).
  4. Echangeur de chaleur selon la revendication 1 pour lequel au moins deux autres sections (1.3, 1.4) de la première voie d'écoulement (1) se raccordent avec un intervalle entre elles à la deuxième section (1.2) de la première voie d'écoulement (1).
  5. Echangeur de chaleur selon la revendication 4 dont d'autres sections (1.3, 1.4) de la première voie d'écoulement (1) s'étendent dans le sens d'écoulement (1S) du premier fluide avec un intervalle derrière elles depuis la deuxième section (1.2) de la première voie d'écoulement (1).
  6. Echangeur de chaleur selon la revendication 1 dont une (des) autre (s) section (s) (1.3, 1.4) de la première voie d'écoulement (1) peut (peuvent) être raccordée(s) à un réservoir tampon.
  7. Echangeur de chaleur selon la revendication 1 dont les première, deuxième et troisième voies d'écoulement (1, 2, 3) sont constituées en un échangeur de chaleur à plaques.
EP20080017935 2008-01-15 2008-10-14 Echangeur thermique Not-in-force EP2080976B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810004529 DE102008004529A1 (de) 2008-01-15 2008-01-15 Wärmetauscher

Publications (2)

Publication Number Publication Date
EP2080976A1 EP2080976A1 (fr) 2009-07-22
EP2080976B1 true EP2080976B1 (fr) 2013-02-27

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ID=40289422

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Application Number Title Priority Date Filing Date
EP20080017935 Not-in-force EP2080976B1 (fr) 2008-01-15 2008-10-14 Echangeur thermique

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EP (1) EP2080976B1 (fr)
DE (2) DE202008017767U1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR102013017086B1 (pt) 2013-07-02 2020-11-24 Mahle Metal Leve S/A Trocador de calor para sistemas de gerenciamento termico da alimentaqao de combustivel em motores de combustao interna
US10883767B2 (en) 2016-07-11 2021-01-05 National University Of Singapore Multi-fluid heat exchanger
SE541355C2 (en) * 2016-12-22 2019-08-13 Alfa Laval Corp Ab A plate heat exchanger with six ports for three different media

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19525216C1 (de) * 1995-07-11 1996-11-21 Bosch Gmbh Robert Wärmetauscher
JP3936088B2 (ja) * 1998-12-08 2007-06-27 大阪瓦斯株式会社 三流体用プレート式熱交換器、及び、その製造方法
SE514096C2 (sv) * 1999-05-17 2001-01-08 Alfa Laval Ab Plattvärmeväxlare
JP2000337784A (ja) * 1999-05-24 2000-12-08 Nhk Spring Co Ltd 三液用プレート式熱交換器
FR2843449B1 (fr) * 2002-08-09 2005-05-06 Valeo Thermique Moteur Sa Echangeur de chaleur pour le circuit d'air d'admission d'un moteur thermique
DE10328746A1 (de) * 2003-06-25 2005-01-13 Behr Gmbh & Co. Kg Vorrichtung zum mehrstufigen Wärmeaustausch und Verfahren zur Herstellung einer derartigen Vorrichtung

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Publication number Publication date
DE202008017767U1 (de) 2010-06-17
EP2080976A1 (fr) 2009-07-22
DE102008004529A1 (de) 2009-07-16

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