EP0389971A2 - Echangeur en céramique - Google Patents

Echangeur en céramique Download PDF

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Publication number
EP0389971A2
EP0389971A2 EP90105477A EP90105477A EP0389971A2 EP 0389971 A2 EP0389971 A2 EP 0389971A2 EP 90105477 A EP90105477 A EP 90105477A EP 90105477 A EP90105477 A EP 90105477A EP 0389971 A2 EP0389971 A2 EP 0389971A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
liquid
gas
guide pockets
channels
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Withdrawn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
EP90105477A
Other languages
German (de)
English (en)
Other versions
EP0389971A3 (fr
Inventor
Siegfried Dr. Förster
Peter Dr. Quell
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.)
Forschungszentrum Juelich GmbH
Original Assignee
Forschungszentrum Juelich 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 Forschungszentrum Juelich GmbH filed Critical Forschungszentrum Juelich GmbH
Publication of EP0389971A2 publication Critical patent/EP0389971A2/fr
Publication of EP0389971A3 publication Critical patent/EP0389971A3/fr
Withdrawn legal-status Critical Current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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0265—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box
    • F28F9/0268—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box in the form of multiple deflectors for channeling the heat exchange medium
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • 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
    • F28D9/0062—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 spaced plates with inserted elements
    • F28D9/0075—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 spaced plates with inserted elements the plates having openings therein for circulation of the heat-exchange medium from one conduit to another
    • 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
    • F28F21/04—Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/18—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes sintered

Definitions

  • the invention relates to a ceramic heat exchanger for recuperative heat exchange between a gaseous and a liquid material flow in a heat exchanger matrix with slot-shaped gas channels and liquid channels running parallel to one another.
  • the features of the ceramic heat exchanger from which the invention is based are specified in the preamble of claim 1.
  • Recuperative ceramic heat exchangers with slot-shaped flow channels for the media and correspondingly shaped inlet and outlet openings are known from DE-PS 27 07 290 and DE-PS 28 41 571.
  • the dimension of these heat exchangers determines in the usual way the number of flow channels required for the heat exchange. In most cases, there is only a small area available for connecting media lines. Metallic connections for the media, which have to be connected to the ceramic heat exchanger for the supply and discharge of the media, are therefore difficult to accommodate and because of the level sealing surfaces required and because of the desired uniform flow through the heat exchanger matrix, especially in the liquid-carrying area, only with great effort to design that a secure seal of the connections is achieved even with higher media pressure.
  • a metallic heat exchanger is known, the structure of which separates gas of a gas developing liquid involved in the heat exchange. Partition walls are provided in the liquid channels, which are intended to separate liquid and gas. The connections of the media lines on the heat exchanger take into account the desired media separation.
  • the object of the invention is to provide a ceramic heat exchanger that is easy to design media Connections regardless of the dimension of the heat exchanger matrix required for heat transfer, while at the same time promoting a uniform flow through the heat exchanger matrix, in particular in its area through which the liquid flows.
  • guide webs extending from the liquid inlet slots for introducing the liquid and at the liquid outlet in front of the liquid outlet slots are arranged in the liquid channels in the liquid channels.
  • the deflection bars act in the liquid on the liquid A turbulent flow emerges, which significantly increases the heat exchange in this area of the heat exchanger matrix.
  • the material temperature of the heat exchanger can also be kept low in the inlet area of the hot gas and the inflowing gas can be cooled rapidly immediately after it has entered the gas channels.
  • the webs in the gas channels expediently run straight from the gas inlet to the gas outlet.
  • the guide pockets with the walls delimiting them and the heat exchanger matrix are integrated in the ceramic heat exchanger in such a way that the guide pockets and heat exchanger matrix form a uniform ceramic block.
  • a simple structure of this block is obtained with a wedge-shaped design of the guide pockets, the liquid inlet and outlet slots are then expediently located in the area of the wedge tips of the guide pockets located on the inflow and outflow side of the heat exchanger matrix is achieved by slightly tilting the heat exchanger matrix in the heat exchanger. This results in an optimal use of space for the heat exchanger block, which is expediently cuboid.
  • the shape of the liquid pockets with a narrowing of the flow cross-section obtained on the one hand at the liquid inlet from the liquid inlet to the liquid inlet slots on the heat exchanger matrix creates a liquid accumulation which leads to a uniform liquid distribution in the heat exchanger matrix.
  • tie rods are provided on the guide pockets according to claim 6, which extend through the free space of the guide pockets between two opposite connection openings and have the screw connections on which Connection pieces for the liquid lines are to be fastened.
  • connection pieces For clear positioning of the connecting pieces, they are provided with anti-rotation locks and for watertight connection to the heat exchanger with insertable sealing rings.
  • the liquid lines can be easily connected via an internal thread in the connecting piece.
  • the connection pieces can also be closed with blind plugs.
  • closable ventilation devices are attached in the area of the wedge tips of the guide pockets.
  • An automatic deaerator can also be easily connected to these ventilation devices.
  • the heat exchanger shown in the exemplary embodiment is a ceramic heat exchanger produced in a layered construction.
  • the heat exchanger consists of individual ceramic layers which have cutouts for the formation of flow spaces for the media in the heat exchange.
  • the individual layers are put together in multiple layers, so that cavities delimited by partition walls arise through which the media in heat exchange can be passed.
  • the layers are placed on top of each other in the green state of the ceramic and thereby fixed to one another.
  • the green body of the heat exchanger formed in this way is then sintered and into a uniform ceramic block with gas-tight walls processed between the flow spaces of the media.
  • Silicon carbide and silicon nitride are particularly suitable as the ceramic material for the production of the heat exchanger.
  • Figure 1 shows a half section of a heat exchanger with gas channels 1 and liquid channels 2 for the media in heat exchange.
  • water is heated by hot gas.
  • the hot gas as a heat carrier flows through the gas channels 1 from inflow openings 3 to outflow openings 4, which are each arranged on opposite end faces 5 and 6 of the heat exchanger, as can be seen from FIG. 5.
  • the direction of flow of the gases in the gas channels 1 is indicated by arrows 7 in FIG.
  • the slot-shaped design of the gas channels 1 can be seen from FIG.
  • the water to be heated is guided in the likewise slit-shaped liquid channels 2 through the inner part of the heat exchanger.
  • This inner part which is used for heat exchange between hot gas and water to be heated, forms the heat exchanger matrix.
  • the direction of flow of the water as it flows through the heat exchanger is marked by arrows 8, which are entered in FIG. 1 and FIG. 3.
  • the water flows in the liquid channels 2 in countercurrent to the hot gas in the gas channels 1.
  • the water to be heated is supplied to and in the heat exchanger on the long sides 9, 10 of the heat exchanger dissipated, which run perpendicular to the end faces 5 and 6.
  • Longitudinal walls 11 formed on these long sides 9, 10 are formed by joining together wall layers 12, one of which is shown in FIG. 2.
  • the wall layer 12 has recesses for forming connection openings 13, 14 for supplying and discharging the water to be heated in the heat exchanger.
  • the wall layers 12 are connected - in the exemplary embodiment, six wall layers 12 are stacked on top of one another to form the longitudinal wall 11 - multi-layer web layers 15 for forming the liquid channels 2 for the water.
  • the web layers 15 are shown in FIG. 3.
  • the web layers 15 have webs 16, 17 in the region of the heat exchanger matrix, namely guide webs 16 and deflection webs 17 for guiding the water to be heated in the liquid channel 2.
  • the guide webs 16 start from liquid inlet slots 18 and serve for uniform distribution of the water over the cross section of the liquid channel 2.
  • the deflection bars 17 are arranged in front of liquid outlet slots 19 for swirling the water and for improving the heat transfer into this area.
  • the web layers 15 are used to form both boundary walls 20 for the heat exchanger matrix and outer walls 21, 22 for the heat exchanger.
  • the latter is, on the one hand, the formation of end walls 21 and, on the other hand, the formation of longitudinal walls 22.
  • the guide pockets are wedge-shaped, the liquid inlet or outlet slots 18, 19 being arranged in the region of wedge tips 25, 26 of the guide pockets 23, 24, respectively.
  • the liquid channel 2 is first covered with this wall layer in the area of the heat exchanger matrix.
  • the heat exchange between the water to be heated and the hot gas takes place via the wall layer 27.
  • the wall layer 27 forms the boundary wall between gas channels 1 and liquid channels 2.
  • the wall layer 27 has recesses 28 which produce the necessary spatial connections for distributing the water in the guide pockets 23, 24. Between the recesses 28 there remain webs 29 which take up the mechanical loads in the wall area of the heat exchanger that arise due to the excess liquid pressure in the liquid pockets and introduce them into longitudinal walls 22 and boundary walls 20.
  • a web layer 30 for forming the gas channels 1 is shown in FIG.
  • the web layer 30 has webs 30 'for guiding the hot gas, the webs 30' ver run straight.
  • the gas flow is marked by arrows 7.
  • In the edge region of the web layer 30 there are again recesses for the formation of the guide pockets 23, 24, via which the water to be heated is supplied or discharged. Since these areas of the guide pockets 23, 24 are directly adjacent to the gas channels, heat exchange between liquid and hot gases also takes place in this area.
  • the outer parts of the web layer 30 again form the outer walls 21, 22 of the heat exchanger, namely the end walls 21 and the longitudinal walls 22.
  • a wall layer 27 (FIG. 4) follows again on the web layers 30, of which three web layers 30 are stacked on top of one another in the exemplary embodiment for forming the gas channels 1. This is followed again by web layers 15 (FIG. 3) to form the liquid channels 2 and finally a wall layer 27 is again applied.
  • wall layers 12 (FIG. 2) with connection openings 13, 14 for supplying and removing the water to be heated in the heat exchange follow again at the end of the heat exchanger.
  • the wall layers 12 close the heat exchanger after stacking all the above-described wall and web layers on its long side 10 to form a further longitudinal wall 11, see FIG. 1. To form the longitudinal wall 11, six wall layers 12 are put together.
  • the two guide pockets 23, 24 arranged on both sides of the heat exchanger matrix with a wedge-shaped design.
  • This shape of the guide pockets enables a good distribution of the water in the inlet and outlet area of the heat exchanger. A coherent flow area for the water is created, through which the water can be introduced into the heat exchanger matrix or can be removed from the heat exchanger matrix after it has been heated.
  • connection sockets 31, 32 with anti-rotation devices 33, 34 and sealing rings 35, 36 are inserted and sealed tightly by tie rods 37, 38 with screw connections 39, 40 the connection openings 13, 14 placed.
  • the tie rods penetrate the free space of the guide pockets 23, 24 and are attached to the opposite connection openings 13, 14.
  • the respective opposite connecting pieces 31, 32 can either be connected on both sides to a liquid line or, as is the case in the exemplary embodiment, connected to a liquid line 41 or 42 on only one side, and closed on the other side by a blind closure 43, 44 will.
  • venting devices 45, 46 are provided in the area of the wedge tips 25, 26 of the guide pockets 23, 24.
  • the venting devices 45, 46 are closed by screwed-in plugs 47, 48.
  • automatically working ventilators can also be connected to the venting devices.
  • the heat exchanger is sintered according to the ceramic material used and formed into a uniform gas and pressure water-tight ceramic heat exchanger block. Due to the design of the individual layers, the heat exchanger matrix and the guide pockets with their connections for the liquid lines are integrated in this block.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
EP19900105477 1989-03-25 1990-03-23 Echangeur en céramique Withdrawn EP0389971A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3909996A DE3909996A1 (de) 1989-03-25 1989-03-25 Rekuperativer keramischer waermeuebertrager
DE3909996 1989-03-25

Publications (2)

Publication Number Publication Date
EP0389971A2 true EP0389971A2 (fr) 1990-10-03
EP0389971A3 EP0389971A3 (fr) 1991-09-25

Family

ID=6377298

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900105477 Withdrawn EP0389971A3 (fr) 1989-03-25 1990-03-23 Echangeur en céramique

Country Status (4)

Country Link
US (1) US5063995A (fr)
EP (1) EP0389971A3 (fr)
JP (1) JPH02290494A (fr)
DE (1) DE3909996A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991013308A1 (fr) * 1990-02-28 1991-09-05 Alfa-Laval Thermal Ab Echangeur thermique a plaques reliees a demeure
EP0597398A1 (fr) * 1992-11-12 1994-05-18 Hoechst CeramTec Aktiengesellschaft Structure perméable
WO2009005569A1 (fr) * 2007-06-28 2009-01-08 Exxonmobil Research And Engineering Company Garniture d'orifice d'échangeur thermique à plaque et procédé pour réduire les vibrations dans un échangeur thermique

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5392849A (en) * 1990-09-28 1995-02-28 Matsushita Refrigeration Company Layer-built heat exchanger
JPH06265284A (ja) * 1993-01-14 1994-09-20 Nippondenso Co Ltd 熱交換器
EP0651222A3 (fr) * 1993-11-03 1995-10-25 Hoechst Ceram Tec Ag Dispositif d'échange de chaleur.
EP1193462A3 (fr) * 2000-09-29 2006-04-12 Calsonic Kansei Corporation Echangeur de chaleur
DE10134761C2 (de) * 2001-07-12 2003-05-28 Visteon Global Tech Inc Wärmeübertrager, insbesondere zur thermischen Kopplung eines Glykol-Wasser-Kreislaufes und eines Hochdruckkältemittelkreislaufes
SE522500C2 (sv) * 2002-09-17 2004-02-10 Valeo Engine Cooling Ab Anordning vid en plattvärmeväxlare
SE524176C2 (sv) * 2002-11-01 2004-07-06 Ep Technology Ab Värmeväxlare med förstärkningsorgan
DE10312032A1 (de) * 2003-03-18 2004-09-30 Behr Gmbh & Co. Kg Sammelkasten, Wärmeübertrager und Verfahren zur Herstellung eines Sammelkastens
DE10316755A1 (de) 2003-04-10 2004-10-28 Behr Gmbh & Co. Kg Sammelkasten und Wärmeübertrager
DE10316754A1 (de) * 2003-04-10 2004-10-28 Behr Gmbh & Co. Kg Sammelkasten, Wärmeübertrager und Verfahren zur Herstellung eines Sammelkastens
JP4239077B2 (ja) * 2003-08-20 2009-03-18 独立行政法人 日本原子力研究開発機構 高温耐食性セラミックス製コンパクト熱交換器
US7637313B2 (en) * 2004-04-14 2009-12-29 Panasonic Corporation Heat exchanger and its manufacturing method
US8285972B2 (en) 2005-10-26 2012-10-09 Analog Devices, Inc. Lookup table addressing system and method
US8024551B2 (en) 2005-10-26 2011-09-20 Analog Devices, Inc. Pipelined digital signal processor
US8301990B2 (en) 2007-09-27 2012-10-30 Analog Devices, Inc. Programmable compute unit with internal register and bit FIFO for executing Viterbi code
WO2020033013A2 (fr) * 2018-03-22 2020-02-13 The Regents Of The University Of California Systèmes et procédés permettant de fournir des échangeurs de chaleur à haute température et haute pression à l'aide d'une fabrication additive

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2090328A1 (fr) * 1970-05-27 1972-01-14 Defawes Thomas Ets
DE2841571A1 (de) * 1978-09-23 1980-04-03 Kernforschungsanlage Juelich Einflutiger keramischer rekuperator und verfahren zu seiner herstellung
DE3028304A1 (de) * 1979-08-03 1981-02-19 Fuji Heavy Ind Ltd Waermeaustauscher
US4545429A (en) * 1982-06-28 1985-10-08 Ford Aerospace & Communications Corporation Woven ceramic composite heat exchanger

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AT166779B (fr) *
GB329714A (en) * 1929-02-26 1930-05-26 Frans Ivar Eugen Stenfors Improvements in heat interchangers
FR995395A (fr) * 1945-02-23 1951-11-30 échangeur de température, pouvant être utilisé pour la pasteurisation du lait
US3334399A (en) * 1962-12-31 1967-08-08 Stewart Warner Corp Brazed laminated construction and method of fabrication thereof
GB1170601A (en) * 1966-03-15 1969-11-12 Apv Co Ltd Improvements in or relating to Evaporators
US3631923A (en) * 1968-06-28 1972-01-04 Hisaka Works Ltd Plate-type condenser having condensed-liquid-collecting means
DE2707290C3 (de) * 1977-02-19 1979-09-20 Kernforschungsanlage Juelich Gmbh, 5170 Juelich Rekuperativer Wärmeübertrager aus keramischem Material
US4298059A (en) * 1978-09-23 1981-11-03 Rosenthal Technik Ag Heat exchanger and process for its manufacture
US4287945A (en) * 1979-07-03 1981-09-08 The A.P.V. Company Limited Plate heat exchanger
US4370868A (en) * 1981-01-05 1983-02-01 Borg-Warner Corporation Distributor for plate fin evaporator
WO1983002152A1 (fr) * 1981-12-10 1983-06-23 DAHLGREN, Jöns, Arthur Echangeur de chaleur a plaques
DE3215961A1 (de) * 1982-04-29 1983-11-03 Dieter 9050 Steinegg-Appenzell Steeb Waermetauscher
JPS60162185A (ja) * 1984-02-03 1985-08-23 Matsushita Electric Ind Co Ltd 積層式熱交換器
JPS6155584A (ja) * 1984-08-24 1986-03-20 Matsushita Electric Ind Co Ltd 積層式熱交換器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2090328A1 (fr) * 1970-05-27 1972-01-14 Defawes Thomas Ets
DE2841571A1 (de) * 1978-09-23 1980-04-03 Kernforschungsanlage Juelich Einflutiger keramischer rekuperator und verfahren zu seiner herstellung
DE3028304A1 (de) * 1979-08-03 1981-02-19 Fuji Heavy Ind Ltd Waermeaustauscher
US4545429A (en) * 1982-06-28 1985-10-08 Ford Aerospace & Communications Corporation Woven ceramic composite heat exchanger

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991013308A1 (fr) * 1990-02-28 1991-09-05 Alfa-Laval Thermal Ab Echangeur thermique a plaques reliees a demeure
EP0597398A1 (fr) * 1992-11-12 1994-05-18 Hoechst CeramTec Aktiengesellschaft Structure perméable
US5657818A (en) * 1992-11-12 1997-08-19 Hoechst Ceramtec Aktiengesellschaft Permeable structure
WO2009005569A1 (fr) * 2007-06-28 2009-01-08 Exxonmobil Research And Engineering Company Garniture d'orifice d'échangeur thermique à plaque et procédé pour réduire les vibrations dans un échangeur thermique
US8240367B2 (en) 2007-06-28 2012-08-14 Exxonmobil Research And Engineering Company Plate heat exchanger port insert and method for alleviating vibrations in a heat exchanger

Also Published As

Publication number Publication date
JPH02290494A (ja) 1990-11-30
DE3909996A1 (de) 1990-10-04
US5063995A (en) 1991-11-12
EP0389971A3 (fr) 1991-09-25
DE3909996C2 (fr) 1991-01-10

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