EP3392591A1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

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Publication number
EP3392591A1
EP3392591A1 EP18166259.4A EP18166259A EP3392591A1 EP 3392591 A1 EP3392591 A1 EP 3392591A1 EP 18166259 A EP18166259 A EP 18166259A EP 3392591 A1 EP3392591 A1 EP 3392591A1
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EP
European Patent Office
Prior art keywords
tube
central tube
inner body
heat exchanger
outer tube
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.)
Granted
Application number
EP18166259.4A
Other languages
German (de)
English (en)
Other versions
EP3392591B1 (fr
Inventor
Johann Brandstetter
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Individual
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Individual
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Publication date
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Publication of EP3392591A1 publication Critical patent/EP3392591A1/fr
Application granted granted Critical
Publication of EP3392591B1 publication Critical patent/EP3392591B1/fr
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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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • 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
    • F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial 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
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
    • F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G3/00—Rotary appliances
    • F28G3/02—Rotary appliances having abrasive tools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G3/00—Rotary appliances
    • F28G3/04—Rotary appliances having brushes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G3/00—Rotary appliances
    • F28G3/08—Rotary appliances having coiled wire tools, i.e. basket type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G3/00—Rotary appliances
    • F28G3/10—Rotary appliances having scrapers, hammers, or cutters, e.g. rigidly mounted

Definitions

  • the invention relates to a heat exchanger having the features of the introductory part of claim 1. It also relates to a method having the features of the introductory part of claim 15.
  • Object of the present invention is thus to provide a heat exchanger having a low susceptibility to blockages.
  • the arrangement of the cleaning lip and the rotation of the central tube, a cleaning of the walls can be achieved in the heat exchanger.
  • the cleaning lips are usually attached to an adjacent tube or the inner body.
  • the cleaning lips are preferably formed so that they are mounted in the case of the outer space on either outer tube or center tube and the other tube touching, or that they are mounted in the case of the inner space on either inner body or central tube and touch the other element , This is due to the cleaning lip on the Wall that touches them, moves along and scrapes them off. Thus, deposits are released, which are transported away by the liquid flow. This extends the maintenance intervals and reduces the risk of blockage.
  • the cleaning lip can still change the flow of liquid flowing in the intermediate space.
  • These flow-conducting properties can be exploited by shaping the cleaning lip so that favorable flows result. For example, it can be achieved by mixing the liquid or the extension of the flow path. This improves the heat transfer.
  • the central tube can be rotated by a drive, while the outer tube and inner body are firmly connected to the environment.
  • the central tube can be firmly connected to the environment, and the outer tube and inner body are rotated.
  • both intermediate spaces it is advantageous if at least one cleaning lip is arranged at least in the inner intermediate space as well as in the outer intermediate space. As a result, both spaces can be sufficiently cleaned.
  • the center tube is preferably made of copper, as this allows a high heat transfer.
  • the center tube is preferably made of copper, as this allows a high heat transfer.
  • At least one cleaning lip is designed as an elastic hollow profile and / or as a brush. Both embodiments adapt to the shape of the wall that they should touch and clean. It is of course also possible to use a plurality of cleaning lips of different embodiments, or a cleaning lip to change its shape along its longitudinal extension. In particular, if the wall to be cleaned has elevations or depressions, brush designs may be advantageous.
  • the cleaning lips may be mounted in or on the wall of the outer tube, center tube or inner body, which walls may also have recesses or grooves to partially receive and secure the cleaning lips.
  • the inner body is designed as a cylinder.
  • a first liquid for heat exchange in a direction substantially along the axis of rotation of the central tube and in the outer space a second liquid for heat exchange in the opposite direction substantially along the axis of rotation flows.
  • the heat exchanger can be applied countercurrently, which is advantageous. This may provide, for example, that an outer inlet to the outer space and an inner outlet to the inner space, and at a second, opposite end, an outer outlet to the outer space and an inner inlet to the inner space is provided at a first end of the heat exchanger.
  • At least one cleaning lip extends over at least a major part of the length of the central tube. It is particularly advantageous if it extends over the entire length of the central tube. If the cleaning lip is arranged in the outer intermediate space and the outer tube extends over the central tube, it may also be advantageous to carry out the cleaning lip longer than the central tube, in particular if it is attached to the central tube. The same applies in respect to the inner space, or if the inner body is made longer than the center tube.
  • At least one cleaning lip is arranged helically along the axis of rotation of the central tube.
  • the cleaning lip also acts as a flow-conducting element and extends the path of the liquids. It is particularly advantageous if corresponding cleaning lips are provided in both intermediate spaces. The fluids are forced to flow around the center tube helically.
  • the central tube has a toothed ring in which engages a gear of an immovable motor with respect to the outer tube and / or the inner body.
  • the transmission may be a worm gear, wherein the worm shaft is fixed to the motor, which is fixedly connected to the inner body and / or the outer tube, for example flanged in the direction of rotation of the central tube.
  • the sprocket may be attached to the inside or outside of the center tube.
  • the outer tube has at least one radially arranged, leading to the outer space outer tube connection in the region of one end of the outer tube.
  • This outer pipe connection can serve as inlet and outlet. It is particularly advantageous if corresponding outer tube connections are made in the regions of both ends of the outer tube. However, it may also be advantageous not to arrange a corresponding outer pipe connection in the region of one end, for example when the outer pipe is only partially used as a heat exchanger of this type.
  • an outer radial shaft sealing ring between the outer tube and the central tube is arranged between outer tube outflow and the end of the outer tube. As a result, the outer gap is sealed tight on this side.
  • an outer bearing between the outer tube and the center tube is arranged. As a result, the outer bearing does not come into contact with the first liquid and is protected from corrosion.
  • the inner body has at least one inner body connection (10) at least in the region of one end of the inner body, which connects the inner interspace with a cover surface of the inner body. This allows a simple way an inflow or outflow, without the rotation is disturbed.
  • an inner radial shaft sealing ring between the inner body and the central tube is arranged between an opening leading to the inner space of the mecanicakaausvones and the end of the inner body.
  • the inner space is limited at this end and it can be made for storage space, as well as the drive without contact with the second liquid.
  • an inner bearing between the inner body and the center tube is arranged. As a result, the inner bearing does not come into contact with the second liquid and is protected against corrosion.
  • At least one flow guide rib may be arranged at least on a wall of the outer tube, central tube or inner body facing the inner intermediate space or outer intermediate space.
  • These Strömungsleitrippen may have a variety of shapes, preferably with the same shaped Strömungsleitrippen in a cross section along the axis of rotation uniformly and over the entire cross section are arranged distributed on the wall. They can only be made short and extend only over a limited length of the heat exchanger.
  • the Strömungsleitrippen can also serve to direct the media in the interior of the flow channel and can also extend over the entire length of the heat exchanger. In particular, when the cleaning lips are not helical but parallel.
  • At least one first cleaning lip (6) is arranged on the inner body and at least one second cleaning lip is arranged on the inner side of the outer tube and the first cleaning lip (6) and second cleaning lip touch the central tube.
  • a third cleaning lip and a fourth cleaning lip are arranged on the central tube and the third cleaning lip touches the inner body and the fourth cleaning lip touches the outer tube.
  • the inner wall of the outer tube and the jacket wall of the inner body can be cleaned.
  • both first, second, third and fourth cleaning lips are provided, it makes sense that the rotation of the central tube is carried out only to a certain angle, and then the direction of rotation is reversed. This can avoid that the cleaning lips of the same spaces must overcome each other.
  • a plurality of heat exchanger units can be arranged one behind the other, which can use the same outer tube, center tube and inner body.
  • three heat exchangers of the type described could be arranged one behind the other, one for heat exchange between the first and second liquids, one for heat exchange between the first liquid and a compression liquid, and one for heat exchange between the second liquid and the compression liquid.
  • At least one cleaning lip is arranged in each of the two spaces, which are not rotatable relative to each other, then it is particularly advantageous if at least these two cleaning lips over at least the majority of their longitudinal extent radial to the axis of rotation have no difference in angle. As a result, they are in cross section with the axis of rotation on a line, that is, they are in cross section on the same radial axis. The cleaning lips thus force a "perfect" counterflow through the steering of the liquids. This further improves the heat transfer.
  • the water is filtered or otherwise treated before being passed into the outer or inner space.
  • a comminution unit is provided which, for example, breaks up hair in the water and thus reduces the risk of blockage.
  • a treatment before the introduction is advantageous.
  • Fig. 1a and Fig. 1b show a first embodiment with an outer tube 1, a center tube 2 and a cylindrical inner body 3, which are arranged concentrically about a rotational axis D of the central tube 2 into one another. All three components have a circular cross-section, and between outer tube 1 and central tube 2, an outer space 4 and between the center tube 2 and inner body 3, an inner gap 5 is defined, which have uniform thicknesses in cross-section.
  • the inner body 3 has a groove in which a first cleaning lip 6 is attached, which contacts the inner wall 21 of the central tube 2.
  • the outer ring 1 also has a groove in which a second cleaning lip 7 is attached, which contacts the outer wall 22 of the central tube 2.
  • the first cleaning lip 6 and second cleaning lip 7 are arranged as hollow profiles, made of elastic plastic or rubber and helically along the axis of rotation D. Since both cleaning lips 6,7 touch the center tube 2, they force a flowing in the inner space 5 first liquid and flowing in the outer space 4 second liquid to a helical flow along the axis of rotation D. This extends the path of the liquids and increases the flow velocity and the Heat exchange of the liquids improved. In addition, the scraped lining is moved by the helical shape along the direction of rotation to one end of the heat exchanger.
  • Fig. 2 shows a part of the first embodiment at one end 8.
  • the outer space 4 has an outer pipe connection 9, which is designed as a radial bore. Through these, the second liquid can be introduced or led out.
  • a leading to a top surface 12 of the inner body 3 inner body terminal 10 is arranged, which has an opening 5 leading to the inner gap 5.
  • the inner space 5 can be supplied via connected to the top surface 12 tubes or hoses with the first liquid, or these are removed.
  • the opening 11 and the outer pipe connection 9 are arranged at the same height of the rotation axis D. Between them and the end 8, an outer radial shaft seal 14 and an inner radial shaft seal 13 is arranged, whereby the intermediate spaces are limited to 4.5 relative to the end 8.
  • an outer bearing 15 is arranged, which produces a rotatable connection between the outer tube 1 and the center tube 2.
  • a ring gear 16 is disposed on the outer wall 22 of the central tube 2.
  • the outer tube 1 has a recess 17, in which a motor with gear for the operation of the ring gear 16 can be used.
  • this recess 17 may also be provided on the inner body 3, when the engine is to be arranged there.
  • the motor can drive the shaft from the outside.
  • the motor may be mounted on a connecting piece 18. It is also conceivable that in place of an engine, a crank is attached, if the cleaning is not constantly necessary.
  • the inner body 3 is fixedly connected to the outer tube 1 at the end 8 via the connecting piece 18.
  • the center tube 2 can always be rotated only in relation to both elements and the inner body 3 does not need a bearing at the end 8.
  • the first cleaning lip 6 and second cleaning lip 7 are not rotatable against each other and are in cross-section in an axis with the axis of rotation D, ie they touch the central tube 2 at two opposite points of the inner wall 21 and outer wall 22nd
  • Fig. 3 discloses a second embodiment having a similar basic structure as the first embodiment.
  • the outer tube 1 has three second cleaning lips 7, which are arranged on the surface of the outer tube 1 and not in a groove.
  • the inner body has three first cleaning lips 6, which are also arranged on the surface of the inner body 3 and not in a groove.
  • the first and second cleaning lips 7, 6 are designed as elongated, full lips, wherein the central tube 2 - the first cleaning lips 6 on the inner wall 21 and the second cleaning lips 7 on the outer wall 22 - touch.
  • the central tube 2 has on the inner wall 21 grooves in which three brush-shaped third cleaning lips 19 are arranged, which contact the inner body 3.
  • the inner body 3 and the outer tube 1 are not rigidly connected to each other as in the first embodiment. As a result, only the inner body 3 or only the outer tube 1 with respect to the central tube 2 can be rotated, whereby one-sided cleaning can be performed.
  • the inner body 3 has, on its side facing the inner intermediate space 4 and the outer tube 1, on its side facing the outer intermediate space 5, flow guide ribs 23 which have a wave-like shape in cross-section. These swirl the liquid flowing past it and lead to a stronger mixing. They do not extend over the entire length of the components, but are arranged only in the areas of the terminals of the first and second interspaces 4, 5, which are used as an inlet. In this case, each flow guide ribs 23 of a gap 4, 5 are distributed at the same flow height and substantially uniformly over the cross section of the walls on which they are arranged.
  • All cleaning lips 7, 6, 19 are not helical, but arranged substantially parallel to the axis of rotation D. Theoretically, they could also be screw-shaped. They extend substantially over the entire lengths of the intermediate spaces 4, 5.
  • the third cleaning lips 19 extend over the flow height at which the Strömungsleitrippen 23 are arranged and move during rotation therefore on this directly away. Due to the brush shape, however, the third cleaning lip 19 adapts to these unevenness during the rotation, as a result of which complete cleaning is possible.
  • Fig. 4a and Fig. 4b show a third embodiment, which is very similar to the second embodiment. It also has first cleaning lips 6, second cleaning lips 7 and third cleaning lips 19. In addition, however, the central tube 2 also has fourth cleaning lips 20. In this case, all cleaning lips 6, 7, 19, 20 are arranged in grooves.
  • Fig. 4a shows the embodiment in an initial rotational position, in which the second and third cleaning lips 6, 19 and the first and fourth cleaning lips 7, 20 are arranged directly next to each other.
  • the rotational movement is substantially only counterclockwise with respect to the central tube 2, or in a clockwise direction with respect to the outer tube 1 and the inner body 3 possible.
  • Fig. 4b shows a second rotational position after a rotation has been made to about half of the possible rotatability.
  • the second and third cleaning lips 6, 19 and the first and fourth cleaning lips 7, 20 have thus ever been moved away from each other. A further rotation is possible until the second and third cleaning lips 6, 19 and the first and fourth cleaning lips 7, 20 abut each other, then the direction of rotation should be changed.
  • Fig. 5 shows a fourth embodiment of three partially overlapping heat exchangers, which are arranged in the same outer tube 1, central tube 2 and the inner body 3.
  • the middle heat exchanger is the longest.
  • a first outer gap 4a and a first inner gap 5a are arranged in the middle region.
  • the outer space 4a is delimited on one side by a radial external shaft seal 14 from a second external space 4b, while the first internal space 5a on the other side is defined by an internal radial shaft seal 23 by a second internal space 5b.
  • the first outer space 4a is radially adjacent to the first inner space 5a and the second inner space 5b, while the first inner space 5a is radially adjacent to the two outer spaces 4a, 4b.
  • first intermediate spaces 4a, 5a each serve two heat exchangers.
  • first outer pipe connections 9a a second liquid is transported through the first outer space 4a in one direction (arrows 24), while first inner body connections 10a pass a first liquid through the first inner space 5a in the opposite direction becomes (arrows 25).
  • the liquids are thus guided in the countercurrent principle.
  • This sub-segment of the arrangement represents the first heat exchanger.
  • the first liquid can heat the second liquid.
  • the miter ear 2 There is a further part of the miter ear 2, on the outer wall 22 of which the second outer interspace 4b and on the inner wall 21 of which the first inner interspace 5a is located.
  • This second outer space 4b is supplied with the compression fluid through second outer tube ports 9b, which can heat exchange with the first fluid in this area.
  • This area constitutes the third heat exchanger.
  • the compression fluid can further cool the already partially cooled first fluid since the first fluid is passed first through the first and then through the third heat exchanger.
  • the compression fluid may be part of a heat pump together with the second and third heat exchangers, which improves the heat transfer between the first and second fluid.
  • the recess 17 is arranged on the inner body 3, since the sprocket 16 is arranged on the inner wall 21 of the central tube 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP18166259.4A 2017-04-12 2018-04-09 Échangeur de chaleur Active EP3392591B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA151/2017A AT519546B1 (de) 2017-04-12 2017-04-12 Wärmetauscher

Publications (2)

Publication Number Publication Date
EP3392591A1 true EP3392591A1 (fr) 2018-10-24
EP3392591B1 EP3392591B1 (fr) 2020-01-22

Family

ID=61913069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18166259.4A Active EP3392591B1 (fr) 2017-04-12 2018-04-09 Échangeur de chaleur

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EP (1) EP3392591B1 (fr)
AT (1) AT519546B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110645738A (zh) * 2019-10-24 2020-01-03 湖南埃瓦新能源科技有限公司 一种具有除垢功能的空气能热泵
NL2024720B1 (en) * 2020-01-21 2021-09-09 Ireliemar B V Heat exchanger and use of heat exchanger

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2439630A1 (fr) * 1978-10-23 1980-05-23 Montage Cie Indle Dispositif de nettoyage de tubes conduisant des gaz charges d'impuretes et d'epuration des gaz
DE202007006465U1 (de) * 2006-05-04 2007-08-23 Rainer, Johannes Abwasserwärmetauscher
EP2733453A1 (fr) * 2011-07-14 2014-05-21 Moreno García, Antonio Dispositif d'échange thermique amélioré pour le traitement de liquides et autres
EP2759796A2 (fr) * 2013-01-25 2014-07-30 Hrs Investments Ltd. Unité d'échange de chaleur à pompage automatique
US20150300746A1 (en) * 2012-04-05 2015-10-22 C.I. Kasei Company, Limited Heat exchanger tube and heat exchanger employing the same
WO2016038098A1 (fr) * 2014-09-09 2016-03-17 Nestec S.A. Appareil, procédé et utilisation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2439630A1 (fr) * 1978-10-23 1980-05-23 Montage Cie Indle Dispositif de nettoyage de tubes conduisant des gaz charges d'impuretes et d'epuration des gaz
DE202007006465U1 (de) * 2006-05-04 2007-08-23 Rainer, Johannes Abwasserwärmetauscher
EP2733453A1 (fr) * 2011-07-14 2014-05-21 Moreno García, Antonio Dispositif d'échange thermique amélioré pour le traitement de liquides et autres
US20150300746A1 (en) * 2012-04-05 2015-10-22 C.I. Kasei Company, Limited Heat exchanger tube and heat exchanger employing the same
EP2759796A2 (fr) * 2013-01-25 2014-07-30 Hrs Investments Ltd. Unité d'échange de chaleur à pompage automatique
WO2016038098A1 (fr) * 2014-09-09 2016-03-17 Nestec S.A. Appareil, procédé et utilisation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110645738A (zh) * 2019-10-24 2020-01-03 湖南埃瓦新能源科技有限公司 一种具有除垢功能的空气能热泵
NL2024720B1 (en) * 2020-01-21 2021-09-09 Ireliemar B V Heat exchanger and use of heat exchanger

Also Published As

Publication number Publication date
EP3392591B1 (fr) 2020-01-22
AT519546A4 (de) 2018-08-15
AT519546B1 (de) 2018-08-15

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