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US20100242863A1 - Metallic porous body incorporated by casting into a heat exchanger - Google Patents

Metallic porous body incorporated by casting into a heat exchanger Download PDF

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Publication number
US20100242863A1
US20100242863A1 US12/680,009 US68000908A US2010242863A1 US 20100242863 A1 US20100242863 A1 US 20100242863A1 US 68000908 A US68000908 A US 68000908A US 2010242863 A1 US2010242863 A1 US 2010242863A1
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US
United States
Prior art keywords
heat exchanger
porous body
metallic
sand
exchanger element
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
US12/680,009
Other languages
English (en)
Inventor
Karel Hubau
Johannes Beukers
Paul Thijssen
Jan van Peteghem
Frank Geelen
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.)
Bekaert Combustion Technology BV
Original Assignee
Bekaert Combustion Technology BV
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 Bekaert Combustion Technology BV filed Critical Bekaert Combustion Technology BV
Assigned to BEKAERT COMBUSTION TECHNOLOGY B.V. reassignment BEKAERT COMBUSTION TECHNOLOGY B.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BEUKERS, JOHANNES, HUBAU, KAREL, GEELEN, FRANK, THIJSSEN, PAUL, VAN PETEGHEM, JAN
Publication of US20100242863A1 publication Critical patent/US20100242863A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
    • F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0063—Casting in, on, or around objects which form part of the product finned exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/38—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water contained in separate elements, e.g. radiator-type element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0026—Guiding means in combustion gas channels
    • 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
    • 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
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/022—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being wires or pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/048—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
    • 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
    • F28F2255/14—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes molded
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making

Definitions

  • the present invention relates to a co-cast heat exchanger element intended for a central heating boiler, which heat exchanger element is made from substantially aluminum, the heat exchanger element being provided with walls which enclose a water carrying channel, and with at least one wall which encloses at least one flue gas draft to which a burner can be connected, at least one wall which encloses the at least one flue gas draft being water-cooled in that it also forms a boundary of the water-carrying channel, while at least one of the water-cooled walls is provided with heat exchanging surface enlarging pins and/or fins which extend in the respective flue gas draft and is also provided with other heat exchange surface enlarging metallic porous structures.
  • the present invention also relates to a method for obtaining such a co-cast heat exchanger element and its use in a central heating boiler.
  • a heat exchanger according to above described heat exchanger is known from EP 1722172, wherein the cross-sectional surface of the pins and/or fins is smaller than 25 mm 2 ; the heat exchanger being a mono-casting.
  • Such heat exchanger with pins with a length of e.g. 15 mm and having a greater surface-content ratio, has a low weight. This results optimally in a thermal inertia of 0.16 kg/kW, which makes the heat exchanger element heating up much more rapidly, thereby reducing the time required for obtaining hot water for domestic use.
  • Such heat exchanger due to the smaller length of the pins and/or fins, has a smaller cross-section of the flue gas draft. This leads to a higher flow velocity of the flue gases and results in a higher heat transfer coefficient and thus a better efficiency.
  • the known heat exchanger element is already relatively small for a boiler with such an output.
  • this boiler is used for heating not only central heating water but also domestic hot water, there is still a need for further improving the compactness, and for a still more rapid heating of the domestic hot water.
  • WO 02/093644 describes a heat exchanger consisting of open-pore metallic foam as an example of a porous structure, wherein the metallic foam is cast together with structural elements (e.g. water channels) in one single step.
  • structural elements e.g. water channels
  • the use of such a heat exchanger element on its own in a boiler is not possible as the metallic foam would melt by the heat of the flue gases.
  • casting of complex structures together with the already complex open cell foam body (as an example of a metallic porous structure) is a rather difficult job, resulting in a lot of scrap and waste. Therefore, most people consider connecting an (aluminium) porous body to a heat exchanging element in a separate step.
  • good heat conducting contact between the porous metal body and the solid metal carrier is indispensable for an efficient functioning of the heat-exchanging devices. This is particularly relevant taking into account the fact that only a small percentage of the solid metal carrier is in contact with the porous metal structure. Establishing excellent thermal/metallic contact can reduce the total dimensions of a heat-exchanging device considerably and thereby reduce material costs and space.
  • An aspect of the claimed invention provides a heat exchanger element intended for a central heating boiler having a higher output than the known central heating boilers with comparable dimensions, the intended heat exchanger element being particularly compact and having low weight.
  • the heat exchanger element according to the invention is manufactured as a co-casting product from substantially aluminium, the heat exchanger comprising the features of claim 1 .
  • the heat exchanger element has a very flat design, wherein the flue gas draft is wide but not deep (as can be seen in FIG. 1A ), which is possible due to the use of shorter and smaller pins and/or fins as heat exchange surface enlarging structures, compared to the ones used in conventional heat exchanger elements for boilers.
  • the use of these pins and/or fins, with their great surface-content ratio and heat exchanging action, makes it possible to cool down the flue gas and to transfer the heat efficiently to the water-cooled walls.
  • the cooling of the long walls in the heat exchanger element is established by a parallel path in a one-piece water channel.
  • This one-piece water channel core renders the manufacture of the core and the positioning of the core in a sand-casting mold relatively simple, so that the manufacture of the heat exchanger element is relatively simple as well and, accordingly, can take place in an economically favourable manner.
  • the water-channel core can be built of different pieces put together to form the water-channel core.
  • the incorporation of the metallic porous body into the heat exchanger element is a relatively simple method: this porous body is incorporated in the internal sand core of the heat exchanger.
  • the porous body is built in into the (polystyrene) positive model in a lost foam casting process.
  • the porous metallic body was not affected by the hot molten metal, cast onto the porous metallic body and that a good metallic bond was obtained between the porous metallic body and the cast heat exchanger element. And also that the aluminium-oxides present at the surface of the porous aluminium material did not inhibit a good connection between the porous material and the heat exchanger element.
  • the struts or ligaments of the metallic porous body stay intact into the complete co-cast structure and are properly surrounded by the melt (see FIG.
  • a central heating boiler can be made having a greater output than the known central heating boilers with comparable dimensions, while the same or even a better degree of compactness and thermal inertia is achieved.
  • the heat exchanger element is manufactured as a co-casting, comprising the steps of claim 5 , 6 or 7 , and can be manufactured in a relatively quick and efficient manner.
  • each flue gas draft of the heat exchanger may comprise two opposite walls having pins with a cross sectional surface which is smaller than 25 mm 2 .
  • Another aspect of the invention relates to a central heating boiler comprising at least one heat exchanger element according to the invention.
  • the heat exchanger element is made from substantially aluminium meaning that the heat exchanger element can be made out of pure aluminium or an aluminium alloy. Wherever in this description is referred to metal, aluminium or one of its alloys is referred to. It should be noted that the terms metal, aluminium and aluminium-alloy will be used throughout this text without meaning anything else than aluminium or one of it's alloys.
  • metallic porous material or body differs from pins and fins in that these metallic porous materials/bodies represent a continuous and complex 3-D structure such as e.g. metallic open cell foam, metallic spacer material, folded knitted or woven metal wire structures or knitted wire mesh. Another distinction between the pins and fins and the metallic porous materials lies in the porosity of these structures.
  • a metallic porous material as used in this text has a porosity of 70% or more.
  • co-casting is explained in claim 5 , and can be described in short as a two step casting method, wherein the first casting was performed in the production of the porous metallic body, see e.g. WO 01/14086 or EP1733822; the second or co-casting step being described in this patent application.
  • Co-casting in the light of this patent application, is also to be understood as casting onto a porous metallic object, thereby obtaining the good metallic bond.
  • FIG. 1 is a perspective view of an exemplary embodiment of a heat exchanger according to the invention.
  • FIG. 2 is a sectional view taken on the plane II-II′ of FIG. 1 .
  • FIG. 3 is a sectional view taken on the plane III-III′ of FIG. 1 .
  • FIG. 4 is a perspective view of an alternative exemplary embodiment of a heat exchanger according to the invention.
  • FIG. 5 is a sectional view taken on the plane V-V′ of FIG. 4 .
  • FIG. 6 is a sectional view taken on the plane VI-VI' of FIG. 4 .
  • FIG. 7 is a perspective view of the principle of the parallel water channels of the heat exchanger according to the invention.
  • FIG. 8 is an optical microscopy picture of a strut of an open cell aluminium foam made of aluminium alloy AlSi7 embedded in the co-cast material of the heat exchanger element made of aluminium alloy AlSi10.
  • FIG. 9 is a perspective view of an alternative embodiment of the present invention.
  • FIG. 10 is a sectional view taken on the plane X-X′ of FIG. 9 .
  • FIG. 11 is a sectional view taken on the plane XI-XI′ of FIG. 9 .
  • FIG. 12 shows a perspective view of the water channel used in FIG. 9 .
  • FIGS. 1 , 2 and 3 show an exemplary embodiment of the heat exchanger 1 according to the invention.
  • Heat exchanger 1 is manufactured as a co-casting substantially from aluminium.
  • the heat exchanger comprises a number of walls 2 , which walls enclose on one side a water carrying channel 3 and on the other side a flue gas draft 7 .
  • the flue gas draft 7 extends from the burner space 6 .
  • the burner space 6 is intended for accommodating a burner.
  • the burner is a metal fiber burner membrane, as described in WO 2004/092647.
  • the walls 2 enclosing the flue gas draft 7 on the long walls 13 of the heat exchanging element are water cooled by the water carrying channel 3 .
  • the water carrying channel 3 is of such design that it forms two parallel water channels, one on each long wall 13 with respect to the burner space 6 and flue gas draft 7 , as shown in FIG. 7 .
  • the water-carrying channel 3 is, preferably, of such design that it is formed with a core 4 , as shown in FIG. 7 .
  • the flue gas draft comprises two opposite walls 2 (i.e. long walls 13 ) having in the upper part A fins 8 extending substantially perpendicular thereto, which fins enlarge the heat exchanging surface and extend into the flue gas draft 7 .
  • Part B of the long walls 13 comprise pins 9 , also extending substantially perpendicular to the wall 13 and enlarging the heat exchanging surface.
  • the pins have a cross-sectional surface which is smaller than 25 mm 2 and a length of approx. 15 mm.
  • Part C of the long walls 13 comprises a metallic porous structure for enlarging the heat exchanging surface; but also for extracting more energy out of the flue gases by the turbulence enhancing 3D-architecture of the metallic porous body.
  • the use of such a porous metallic body is most effective in the lower temperature ranges of the flue gases and accordingly in a heat exchanger element of this type in the lower regions of the heat exchanger element.
  • the flow speed of the flue gases gets lower and lower and the temperature difference with the cooling water (i.e. the water to be heated) is also very small, making the heat exchange dependant on the heat exchange surface enlarging structure or body.
  • the metallic porous material is an open cell aluminium foam, e.g. as described in WO 01/14086.
  • an open cell aluminium foam completely filled flue gas draft
  • This better heat transfer can be translated in a reduction of the heat exchanger surface, and also the weight of the heat exchanger element, by 20% and result in a more compact heat exchanger element 1 or, in other words, gives possibilities to miniaturise the heat exchanger element.
  • the metallic porous material is a metallic spacer material, e.g. as described in EP1733822.
  • the flow system of the water carrying channel in FIG. 7 can be considered to be a parallel connection.
  • Water coming from a central heating pipe system enters the heat exchanger adjacent its bottom side at the location of arrow 11 . From here, the water enters the feed-in part 3 a of the water carrying channel.
  • the channel 3 a divides into two separate channel parts 3 b and 3 c .
  • the water divides in these two channels 3 b and 3 c after which the water flows into the common channel 3 d , thereafter the water leaves the heat exchanger via outlet 12 .
  • both parallel channels of the water carrying channel are provided with surface enlarging pins on their inner side, for further enhancing the heat transfer from the metal of the heat exchanger element to the water to be heated.
  • the flue gases flow from the top to the bottom through the flue gas draft 7 , and the water to be heated flows from the bottom to the top, as described above.
  • the heat exchanger element 1 is preferably manufactured by means of a casting process, such as, for instance, sand casting or die-casting. Preferably, use is then made of at least one core to form the water channel and at least one second core for forming the flue gas channel(s). These flue gas draft cores comprising the metallic porous structures. Alternatively, also a lost foam casting process can be used.
  • the metallic porous body sand core is than build in into the (polystyrene) foam positive model.
  • the metallic porous body in lost foam casting, can be build in into the (polystyrene) foam positive model, The metallic porous body will than be filled with the sand used for the lost foam casting, and no separate step for making a sand core is necessary.
  • the heat exchanger 1 of FIGS. 1 and 4 are produced by the sand co-casting process. First a piece of an aluminium porous body is put in a core box. A mixture of sand and binder is then blown into the void space in the core box, thereby obtaining a hybrid body of metallic porous body filled with the sand-binder mix. The sand-binder mix is hardened thereby obtaining a metallic porous body—sand core. Thereafter the core box is removed. The metallic porous body—sand core is then integrated into a flue gas draft sand core, which is placed in a moulding box together with the water channel core 4 . The molten metal is poured into the moulding and after the necessary cooling down, the sand core is removed. This results in the heat exchanger element 1 as depicted in FIG. 1 or 4 .
  • the heat exchanger element 1 is made via a lost foam co-casting method.
  • the production of a metallic porous body containing heat exchanger element comprises following steps. First, a metallic porous body-sand core, obtained as in paragraph 30 , is build in into a polystyrene pattern (or positive) of the heat exchanger element and further prepared as known in the art. The “polystyrene pattern—metallic porous body-sand core” hybrid cluster is placed into the casting flask and backed-up with un-bonded sand. After the mold compaction, the polystyrene pattern is poured with the molten metal.
  • the metallic porous body is built into the polystyrene pattern of the heat exchanger element. Then also the metallic porous body will be backed up with unbonded sand, which will be easily removed after co-casting of the heat exchanger element
  • Part A of the heat exchanger element, in FIGS. 1 and 4 is designed in a tulip form for obtaining low NOx and low CO emissions. This is mainly obtained by the specific form of the flue gas draft part A and the long fins 8 removing already a lot of the heat from the flue gases. This tulip form seems particularly useful when using a burner of the type as described in WO 2004/092647.
  • the tulip-like form can be described as follows: the burner chamber is bound by the metallic burner 6 , thereafter the flue gas draft 7 widens and thereafter narrows.
  • This specific form is especially designed to follow the flame pattern and it bends the flames equally without abrupt altering of the flame. This creates enough space for a proper combustion, thereby reaching low emissions of NOx and CO and thereby also attaining a very compact design.
  • FIG. 4 shows an alternative embodiment of the invention. Same reference numbers describe same structures as in FIG. 1 .
  • the embodiment of FIG. 4 is similar to the embodiment in FIG. 1 , so only the differences will be explained.
  • FIG. 5 from the third level on (going in the direction of flow of the water to be heated) in the water carrying channel 3 , heat exchange surface enlarging ribs are provided.
  • FIG. 6 Another difference of the embodiment of FIG. 4 can be found in FIG. 6 : here the C-part of the flue gas draft is, next to the metallic porous structure, also containing pins as in part B of the flue gas draft.
  • This modification is an alternative way of integrating a metallic porous body into the heat exchanger element 1 , but also other configurations are possible as is evident for the person skilled in the art.
  • a first worked example embodiment as in FIG. 4 gives a heat exchanger element with an output of approximately 35 kW.
  • the weight of the heat exchanger element per kW to provide, is less than 0.20 kg/kW.
  • the thermal inertia is only 0.17 kg/kW with a compactness of 5.5 kW/l, resulting in a heat exchanger element of 6.0 kg and a volume of 6.4 l.
  • the water carrying channel has a volume of 1.3 litre.
  • the specific load of the burner chamber (i.e. the tulip form of part A) of the flue gas draft is 23 kW/l.
  • FIG. 4 An alternative worked example embodiment as in FIG. 4 , gives a heat exchanger element with an output of approximately 25 kW.
  • the thermal inertia is also only 0.17 kg/kW with a compactness of 5.5 kW/1, resulting in a heat exchanger element of 4.3 kg and a volume of 4.6 l.
  • FIG. 8 is an optical microscopy picture of a strut of an open cell aluminium foam 15 made of aluminium alloy AlSi7 embedded in the co-cast material 16 of the heat exchanger element made of aluminium alloy AlSi10. This body was sand-cast by the method as described above. It clearly shows that the strut's integrity was not altered by the hot melt of aluminium alloy that was cast onto this strut. This type of metallic connection gives heat transfer data which are comparable or better to heat transfer data obtained with a sinter bonding method.
  • FIG. 9 is an alternative example embodiment of the present invention. It shows a heat exchanger element comprising four flue gas drafts 7 , which are water cooled by the water-carrying channel 30 . Again, one can identify three distinctive parts in the flue gas draft. Part A comprising the large fins, part B comprising the pins and part C comprising an aluminium porous structure.
  • the flow system of the water carrying channel in FIG. 12 is also considered to be a parallel connection.
  • Water coming from a central heating pipe system enters the heat exchanger adjacent its bottom side at the location of arrow 110 . From here, the water enters the feed-in part 30 a of the water carrying channel.
  • the channel 30 a divides into five separate channel parts 30 b , 30 c , 30 e , 30 f and 30 g .
  • the water divides in these channels, after which the water flows into the common channel 30 d , thereafter the water leaves the heat exchanger via outlet 120 .
  • the water-carrying channel 30 it is effected that only the long walls 13 of the flue gas drafts 7 are water-cooled.
  • the heat exchanger element 10 Because of the dimensioning of the heat exchanger element 10 resulting in a very flat heat exchanger element, and the heat exchanger element being cooled in a very efficient manner, it does not need cooling on the short walls 14 of the heat exchanger element and makes the heat exchanger element very compact.
  • the optimal heat transfer to the water to be heated makes that the heat exchanger element nowhere becomes overheated, thus an optimal efficiency is obtained and all parts of the heat exchanger remain sufficiently cooled.
  • the parallel channels of the water carrying channel are provided with surface enlarging pins on their inner side, for further enhancing the heat transfer from the metal of the heat exchanger element to the water to be heated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Dispersion Chemistry (AREA)
  • Details Of Fluid Heaters (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US12/680,009 2007-10-25 2008-10-08 Metallic porous body incorporated by casting into a heat exchanger Abandoned US20100242863A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07119275 2007-10-25
EP07119275.1 2007-10-25
PCT/EP2008/063465 WO2009053248A1 (fr) 2007-10-25 2008-10-08 Corps poreux métallique incorporé par coulée dans un échangeur de chaleur

Publications (1)

Publication Number Publication Date
US20100242863A1 true US20100242863A1 (en) 2010-09-30

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Country Link
US (1) US20100242863A1 (fr)
EP (1) EP2201306A1 (fr)
KR (1) KR20100089062A (fr)
CN (1) CN101836051B (fr)
WO (1) WO2009053248A1 (fr)

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US20150107535A1 (en) * 2013-10-18 2015-04-23 Dejatech Holding B.V. Heat exchanger, set and method for forming the same
US20160029516A1 (en) * 2012-12-10 2016-01-28 Sieva, Podjetje Za Razvoj In Trzenje V Avtomobilski Industriji, D.O.O. Advanced heat exchanger with integrated coolant fluid flow deflector
US9927146B2 (en) * 2014-10-08 2018-03-27 Bekaert Combustion Technology B.V. Heat exchanger
US20190011149A1 (en) * 2016-03-09 2019-01-10 Bekaert Combustion Technology B.V. Sectional heat exchanger for use in a heat cell
US20190022807A1 (en) * 2013-04-26 2019-01-24 Dejatech Holding B.V. Modular heat exchanger with sections interconnected by connectors
US10222133B2 (en) 2015-04-30 2019-03-05 International Business Machines Corporation Heat exchange device
US10551087B2 (en) * 2013-12-06 2020-02-04 Webasto SE Heat exchanger with an internal conduit for conducting a fluid
US10852032B2 (en) * 2015-11-25 2020-12-01 Daikin Industries, Ltd. Heat exchanger
US11391523B2 (en) * 2018-03-23 2022-07-19 Raytheon Technologies Corporation Asymmetric application of cooling features for a cast plate heat exchanger

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PL2476986T3 (pl) * 2011-01-17 2017-10-31 Unical Ag Spa Wymiennik ciepła o bardzo szerokim zastosowaniu
CN104117629A (zh) * 2013-04-23 2014-10-29 重庆双腾机械制造有限公司 曲线型油道孔齿轮壳体消失模
GB201409613D0 (en) * 2014-05-30 2014-07-16 Ideal Boilers Ltd A method of making a casting of a heat exchanger
CN104048413A (zh) * 2014-06-10 2014-09-17 华中科技大学 一种用于气液热交换的冷凝换热器
CN104792193B (zh) * 2015-04-30 2016-07-06 樊付辉 一种扁平型冷凝式热交换器
DE102015222047A1 (de) * 2015-11-10 2017-05-11 Robert Bosch Gmbh Heizgerätevorrichtung und Verfahren zum Betrieb einer Heizgerätevorrichtung
EP3173722B1 (fr) * 2015-11-25 2019-05-01 Daikin Industries, Ltd. Echangeur de chaleur
EP3173721B1 (fr) 2015-11-25 2018-04-25 Daikin Industries, Ltd. Echangeur de chaleur
EP3173710B1 (fr) 2015-11-25 2018-06-06 Daikin Industries, Limited Echangeur de chaleur
EP3182030B1 (fr) 2015-12-14 2019-09-04 Daikin Industries, Limited Système d' échange de chaleur avec siphon pour vidange un condensat
EP3182031B1 (fr) 2015-12-14 2019-09-04 Daikin Industries, Limited Système d'échange de chaleur avec siphon pour vidange un condensat
NL2021261B1 (nl) * 2018-07-06 2020-01-15 Bekaert Combustion Tech Bv Warmtecel voor de opwarming van water door middel van warmteoverdracht van rookgassen
CN109556439B (zh) * 2019-01-10 2020-08-11 合肥职业技术学院 一种余热回收节能环保设备
CN109883051B (zh) * 2019-03-21 2023-08-18 西安交通大学 一种模块化商业燃气采暖挤压铝合金辐射炉膛
CN111906264B (zh) * 2020-08-31 2021-06-29 燕山大学 一种泡沫铜冷却水槽连铸结晶器铜板及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6397450B1 (en) * 1998-06-17 2002-06-04 Intersil Americas Inc. Method of cooling an electronic power module using a high performance heat exchanger incorporating metal foam therein
US6857461B2 (en) * 1999-08-20 2005-02-22 Dieter Girlich Method and device for the production of reticular structures
US7086457B2 (en) * 2004-01-08 2006-08-08 Balcke-Durr Gmbh Heat exchanger for industrial installations

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19650613B4 (de) * 1996-12-06 2005-12-29 Daimlerchrysler Ag Bauteil mit einem Metallschaum-Kern
AU2002302330A1 (en) * 2001-05-14 2002-11-25 M.Pore Gmbh Heat exchanger
NL1029004C2 (nl) * 2005-05-10 2006-11-13 Remeha B V Warmtewisselaarelement alsmede een verwarmingsstelsel voorzien van een dergelijk warmtewisselaarelement.
WO2007142527A2 (fr) * 2006-06-08 2007-12-13 Nv Bekaert Sa Échangeur de chaleur et appareil de chauffage équipé de celui-ci
CN1916550A (zh) * 2006-09-05 2007-02-21 西安交通大学 一种管式换热器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6397450B1 (en) * 1998-06-17 2002-06-04 Intersil Americas Inc. Method of cooling an electronic power module using a high performance heat exchanger incorporating metal foam therein
US6857461B2 (en) * 1999-08-20 2005-02-22 Dieter Girlich Method and device for the production of reticular structures
US7086457B2 (en) * 2004-01-08 2006-08-08 Balcke-Durr Gmbh Heat exchanger for industrial installations

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140186652A1 (en) * 2011-05-25 2014-07-03 Filtrauto Process to manufacture a metal foam provided with channels and metal foam thus produced
US20160029516A1 (en) * 2012-12-10 2016-01-28 Sieva, Podjetje Za Razvoj In Trzenje V Avtomobilski Industriji, D.O.O. Advanced heat exchanger with integrated coolant fluid flow deflector
US9844165B2 (en) * 2012-12-10 2017-12-12 Sieva, Podjetje Za Razvoj In Trzenje V Avtomobilski Industriji, D. O. O. Advanced heat exchanger with integrated coolant fluid flow deflector
US20140261241A1 (en) * 2013-03-12 2014-09-18 Dejatech Ges B.V. Heat exchanger and body therefore, and a method for forming a heat exchanger body
US20190022807A1 (en) * 2013-04-26 2019-01-24 Dejatech Holding B.V. Modular heat exchanger with sections interconnected by connectors
CN104633937A (zh) * 2013-10-18 2015-05-20 德扬技术控股有限公司 换热器、组合装置及其制造方法
US20150107535A1 (en) * 2013-10-18 2015-04-23 Dejatech Holding B.V. Heat exchanger, set and method for forming the same
US10551087B2 (en) * 2013-12-06 2020-02-04 Webasto SE Heat exchanger with an internal conduit for conducting a fluid
US9927146B2 (en) * 2014-10-08 2018-03-27 Bekaert Combustion Technology B.V. Heat exchanger
CN104475684A (zh) * 2015-01-08 2015-04-01 广西玉柴机器股份有限公司 复杂壳体零件的铸造工艺
US10222133B2 (en) 2015-04-30 2019-03-05 International Business Machines Corporation Heat exchange device
US10852032B2 (en) * 2015-11-25 2020-12-01 Daikin Industries, Ltd. Heat exchanger
US20190011149A1 (en) * 2016-03-09 2019-01-10 Bekaert Combustion Technology B.V. Sectional heat exchanger for use in a heat cell
US11391523B2 (en) * 2018-03-23 2022-07-19 Raytheon Technologies Corporation Asymmetric application of cooling features for a cast plate heat exchanger

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CN101836051A (zh) 2010-09-15
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KR20100089062A (ko) 2010-08-11

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