EP3334993A1 - Strömungsleitelemente in einem kanal - Google Patents
Strömungsleitelemente in einem kanalInfo
- Publication number
- EP3334993A1 EP3334993A1 EP16760396.8A EP16760396A EP3334993A1 EP 3334993 A1 EP3334993 A1 EP 3334993A1 EP 16760396 A EP16760396 A EP 16760396A EP 3334993 A1 EP3334993 A1 EP 3334993A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- flow
- shaped element
- flow guide
- partial
- 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
Links
- 239000012530 fluid Substances 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 10
- 238000012546 transfer Methods 0.000 claims description 8
- 239000011149 active material Substances 0.000 claims description 5
- 230000003373 anti-fouling effect Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000010146 3D printing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010574 gas phase reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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
- 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
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
-
- 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
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the 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
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow 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
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F7/00—Elements not covered by group F28F1/00, F28F3/00 or F28F5/00
- F28F7/02—Blocks traversed by passages for 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
- F28F2210/00—Heat exchange conduits
- F28F2210/02—Heat exchange conduits with particular branching, e.g. fractal conduit arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2260/00—Heat exchangers or heat exchange elements having special size, e.g. microstructures
- F28F2260/02—Heat exchangers or heat exchange elements having special size, e.g. microstructures having microchannels
Definitions
- the present invention relates to a flow channel provided with flow guide.
- a plurality of flow channels are presented in which internals are present. These serve to mix the material flow.
- a device for the heat exchange is known from the patent DE 2808854 C3.
- the material flow is mixed.
- static mixing elements are incorporated in this.
- Such installations are, for example, in the form of webs or web slats, which are assembled as packages one behind the other in the channel. It is therefore fixed installations, by which the channel flow is deflected. At the edges, for example, flow vortices form, which improve cross-mixing.
- the heat exchange with the channel wall as a result of the increased cross-mixing is improved at the same time.
- Object of the present invention is accordingly, flow guides in one Channel to be designed so that a defined guidance of the volume flow is achieved and at the same time the required heat and / or mass transfer z. B. is ensured by diffusion.
- This object is achieved by a device for achieving a defined guidance of a volume flow of a fluid through a channel-shaped element, wherein in the channel-shaped element microchannel structured flow guide elements for dividing the volume flow and the guidance of the resulting partial flows of fluids are arranged.
- the fluid flows into the channel-shaped element (a flow channel),
- the fluid is divided into (preferably laminar) substreams,
- microchannel-structured (micronized) flow guides the division is achieved by means of microchannel-structured (micronized) flow guides
- micro-channel-structured flow guide defined, and
- the invention relates to a device for achieving a defined guidance of a volume flow of a fluid through a flow channel, in which microchannel-structured (microstructured) flow guide elements for dividing the volume flow and the defined guidance of the resulting partial flows of fluids are arranged.
- exchange processes can take place both with the channel wall and between the part streams.
- the contact distance with the pipe wall and between the individual partial streams is specified.
- the contact distance can be changed depending on the process and thus the process can be influenced.
- the channel flow is accordingly not only deflected locally, but it is guaranteed a defined flow guidance in the channel.
- microstructured flow guide elements are present in the flow channel.
- Flow directors are thin-walled components that are installed in a flow channel (e.g., a pipe).
- the task of the flow guide is to make the flow guide in a channel so that a fluid flow divided into partial streams and these partial streams are alternately guided to the wall of the flow channel.
- exchange processes can take place with the duct wall and / or between partial flows.
- the flow guide elements are constructed from basic elements.
- the result is that the subject of the invention are not mixing elements, but flow guide elements in a flow channel.
- the goal is the subdivision of a channel flow in defined guided partial flows, with a targeted heat exchange of all guided partial flows to take place on the wall.
- a fluid flow flowing into the flow channel is subdivided into partial flows. If a flow-guiding element is constructed from only one basic-form element, two partial flows are generated. If the flow guide element has been constructed from a plurality of basic form elements, their arrangement determines the number of partial flows.
- microstructured flow guide elements are with the so-called. 3D printing technology produced. In other words, with the help of 3D printing technology, it is possible to construct complex shaped surfaces (free-form surfaces.)
- the microstructured flow-guiding elements have a circular, annular, elliptical or rectangular cross-section.
- the channel height of the microstructured flow guide elements is 0.1-100 mm, preferably 0.1-5 mm.
- the width of the micro-channel-structured flow guide is zuzusiedein.
- the length of the microstructured flow guide elements is 3 - 300 mm, preferably 5 - 50 mm
- the wall thickness of the microchannel-structured flow guide elements is 0.01-0.5 mm, preferably 0.1-0.3 mm.
- the flow guide elements are inserted into the flow channel in such a way that they occupy about 5 to 50%, preferably 5 to 30%, of the channel-shaped element (flow channel).
- microstructured flow guide elements according to the invention can also comprise or consist of a catalytically active material.
- the flow guide elements are provided with catalytically active material, a corrosion protection or an antifouling layer or are subjected to any desired combinations of the layers mentioned. It is also possible that the flow guide elements consist of the materials mentioned.
- the microchannel-structured flow guide may contain or consist of metal, ceramics or plastics, or have any combinations of these substances or consist of these.
- the microstructured flow guide the Voiumenstrom a Fiuids can be divided in any way. From two to infinity, any partial flows are conceivable. For example, four or six partial streams may be provided.
- a guide (defined flow guidance) of the partial flows is achieved. In this case, the construction is carried out so that the partial flows are alternately brought into contact with the inner wall of the channel-shaped element (wall of the flow channel) and with the other partial flows.
- the heat exchange with the wall of the flow channel is improved as follows by the flow guide elements installed in the flow channel:
- a partial flow is guided to the wall of the flow channel.
- a heat exchange between the fluid and the wall of the flow channel takes place.
- the resulting heat flow between the fluid and the wall of the flow channel results in heat transport through the fluid layer.
- a partial flow is led away from the wall of the flow channel after a contact path which corresponds to the length of a flow guide, and during the residence time in the interior of the flow channel, a temperature compensation takes place in the partial flow. After flowing through the temperature compensation section of the partial flow is guided back to the wall of the flow channel.
- the flow guide elements are manufactured with different microchannel shapes, ie constructed from basic shaped elements. This makes it possible that the partial flows can be performed arbitrarily in the channel-shaped element.
- the microchannel-structured flow guide are permanently installed. This ensures that permanent contact with the duct wall or the other partial flows is guaranteed on defined areas. This can be targeted to achieve a heat or mass transfer. As a result, a controlled reaction and / or process management is included simultaneous Rothtemper réelle within the microstructured flow guide possible.
- the invention is described in more detail below on the basis of exemplary embodiments: I. List of Reference Signs
- the tube flow is divided into four partial flows for improving the heat transfer between the wall of the channel-shaped element and material flow.
- the channel-shaped element are in the example of FIG. 1 two Flow guide 7.8 installed.
- the Wandstrukiuren the Strömungsieitmaschine 7,8 lead the streams 1, 2, 3 and 4.
- Partial stream 2 penetrates part stream 1 and is directed to the pipe wall 10 of the channel-shaped element.
- the flow guide elements have no wall at the contact surface between partial flow 2 and partial flow 3. This means that the partial streams can exchange material.
- a heat exchange takes place.
- the partial flow 1 is guided by the wall 10 of the channel-shaped element in the direction of the center of the channel-shaped element.
- a corresponding exchange takes place in the partial streams 3 and 4.
- the corresponding exchange process is repeated in the second microchannel structured flow guide 8.
- the wavelength for a replacement cycle corresponds to the length of two flow lines. This can be chosen as a design parameter depending on the viscosity of the material flow.
- the boundary conditions for carrying out the method according to the invention in a device according to FIG. 1 are as follows:
- Length of the flow guide elements 7 and 8 1 15 mm
- the microstructured flow element was made of metal using 3D printing technology.
- the volume consumption by the internals is in the example of Figure 1 8% of the internal volume of the channel-shaped element.
- a cannula-shaped element 9 three micro-channel structured flow guide elements are inserted.
- the volume flow is subdivided into six sub-levels in the first element. In each part level, the volume flow is again divided into three partial flows, so that a total of 18 partial flows arise.
- FIG. 3 shows the profile of the partial flows per part plane (1.1, 2.1, 3.1, 4.1, 5.1, 6.1) over a distance of 3 flow guide element lengths. From the figure it can be seen that the flow guide elements are subdivided into six sub-levels, the sub-streams are systematically guided from part level to part level. Each partial flow is guided once to the wall of the flow channel, as can be seen from FIG. That each microstructured flow guide can once perform a heat exchange on the wall of the flow channel. After a distance of six installation element lengths, the partial flows have again reached the starting position, i. an exchange cycle has been completed. In the example according to FIGS. 2 and 3, the wavelength for an exchange cycle corresponds to the length of six microstructured flow guide elements.
- the contact distance on the wall of the flow channel and the residence time between two wall contacts is defined by the geometry parameters. All partial flows have equal (equivalent) contact distances.
- the microstructured Strömungsleitelementformen and lengths are chosen so that the components are safe to coat with a catalytically active material, or consist of catalytic material.
- FIG. 4 shows that three partial flows are defined per part.
- part levels 12, 13 and 14 are constructed as internals, between which the partial flows are exchanged radially. Again, it is ensured that in each case a partial flow is passed at least once to the channel wall and gets into contact with other partial streams, so that here a mass transfer can take place.
- a flow guiding element 7, 8 in the simplest form consists of exactly one basic shaping element 19 and can be installed in a flow channel 15 with a rectangular cross section.
- the geometric shape is constructed such that the fluid stream divided into partial flows flows through a flow guide element 7, 8 with minimal pressure loss.
- the fluid flow 16 can be divided into partial flows 1, 2.
- the channel cross section 17 is divided by the flow guide 7.8 into two partial streams 1 and 2.
- the contact surface 18 of two partial flows 2.1 and 2.2 is shown.
- the partial flows 2.1 and 2.2 are brought together again after flowing around partial flow 1.
- Heat transfer and / or mass transfer (for example by diffusion) is possible via the contact surface 18.
- FIG. 10 shows the arrangement of the basic form elements 19. By parallel connection in the direction of the X-coordinate axis, the number of partial streams 1 - 6 is increased.
- a flow element composed of three parallel basic form elements divides a fluid flow 16 into six partial flows 1-6.
- FIG. 11 a series connection in the direction of the Z coordinate axis is shown.
- the flow guide elements 7, 8 are arranged one behind the other in the flow direction.
- the partial streams 1 and 2 are conducted separately through the channel.
- the partial flow 1 is guided through a flow cross section 17a.
- the partial flow 2 is guided through a flow cross section 17b.
- FIG. 12 shows the arrangement of the basic form elements 19 or flow guide elements 7, 8.
- the parallel connection of basic shaped elements 19 in the direction of the Y-coordinate axis the number of partial flows is increased to 1 - 3 and by an additional series connection of the flow guide 7.8, the partial streams 1-3 are alternately guided to the channel wall.
- That a Strömungsleitelement 7.8, constructed of two parallel-connected basic form elements 19 divides a fluid flow into three partial streams 1, 2, 3.
- the flow guide elements are constructed from basic form elements.
- the geometric shape is designed so that fluid flows with a minimum pressure loss through a flow guide 7.8.
- a flow guide element 7, 8 can be constructed from one or more basic form elements 19 connected in parallel.
- flow guide elements 7, 8 are arranged in a channel.
- the flow guidance of the partial flows takes place with parallel and series connection.
- the flow guide element 7, 8 is constructed from two basic form elements 19 which are connected in parallel in the direction of the y-coordinate axis.
- the three flow guide elements 7, 8 are connected in series (z-direction).
- the partial flow 3 is guided in the first and second flow guide of partial flow 3 via the position 20 to position 21.
- the partial flow 3 is guided again from position 20 to position 22.
- the flow guide is marked with the numbers 7,8.
- FIGS. 14, 15, 16 are geometrically identical. They snd variants of Figures 4 and 5.
- Figure 14 is a parallel circuit of transformed basic form elements 19 in the radial and circumferential direction in a tube with the tube wall 10 in a channel-shaped element 9.
- two curved basic shape element 19 are in radial Direction or three curved Grundformeiemente 19 in the circumferential direction.
- the number of parallel connected basic form elements 19 the number of partial streams 1 - 6 is defined.
- the circular flow guide element 7, 8 divides the fluid flow into a circular ring 23. Below this follows a circular ring 24 and an inner circle 25.
- a circular, channel-shaped element 9 there are divisions of the fluid flow 16.
- the fluid flow 16 may be constructed of 2 in the radial direction and 3 curved in the circumferential direction basic shape elements a flow guide 7.8.
- the channel cross section is divided by the flow guide 7.8 in circular or Kreisringteilstromquerites.
- the entering into the channel-shaped element 9 fluid flow 16 is divided by the first flow guide in 9 sub-streams.
- position 1 in the circular ring are the partial flows 20.
- the partial streams 21 and in position 3 the partial streams 22 are arranged in the inner circle.
- FIG. 16 shows a further variation of the function of the flow guide elements in a circular, channel-shaped element 9.
- the flow guide element is constructed from 2 ⁇ 3 curved basic shape elements 19.
- the channel cross-section (cross-section of the channel-shaped element 9) is divided by the flow guide in circular or circular ring partial flow cross-section.
- the entering into the channel fluid flow 16 is divided by the first flow in nine part streams.
- the partial flows 20 are shown in the outer annulus.
- the partial streams 21 are present in the inner circular ring.
- the partial streams 22 are present in the inner circle.
- FIG. 17 shows a test setup for the measurement of the thermal efficiency.
- the temperatures are marked with T. Measured is T i0 of the influent fluid 1 and the temperature Tu of the effluent fluid 1.
- the fluid 2 is measured at the temperature T 20 and the temperature T 2 i shows the fluid 2.
- the fluid 1 has the numeral 26, and the fluid 2 is the numeral 27.
- the following table shows the measurement results of the experiments with flow guide elements and without flow guide elements.
- the last column shows the thermal efficiency. This is considerably greater in the devices according to the invention and with flow guide than without flow guide.
- the dark shaded lines indicate the results of the tests with flow guide elements.
- the lines highlighted in light gray indicate the results of the tests without flow guide elements.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015113432.2A DE102015113432A1 (de) | 2015-08-14 | 2015-08-14 | Strömungsleitelemente in einem Kanal |
PCT/EP2016/069214 WO2017029211A1 (de) | 2015-08-14 | 2016-08-12 | Strömungsleitelemente in einem kanal |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3334993A1 true EP3334993A1 (de) | 2018-06-20 |
EP3334993B1 EP3334993B1 (de) | 2019-11-27 |
Family
ID=56855412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16760396.8A Active EP3334993B1 (de) | 2015-08-14 | 2016-08-12 | Strömungsleitelemente in einem kanal |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3334993B1 (de) |
DE (1) | DE102015113432A1 (de) |
WO (1) | WO2017029211A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3392906A1 (de) * | 2017-04-19 | 2018-10-24 | Siemens Aktiengesellschaft | Verfahren zur herstellung einer kühlplatte für einen leistungshalbleiter |
FR3088994B1 (fr) * | 2018-11-28 | 2020-12-25 | Liebherr Aerospace Toulouse Sas | Échangeur de chaleur et système de refroidissement d’un fluide comprenant un tel échangeur de chaleur |
WO2024036206A1 (en) | 2022-08-12 | 2024-02-15 | Cargill, Incorporated | Polycondensation of sugars in the presence of water using a microreactor |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2808854C2 (de) | 1977-05-31 | 1986-05-28 | Gebrüder Sulzer AG, 8401 Winterthur | Mit Einbauten versehener Strömungskanal für ein an einem indirekten Austausch, insbesondere Wärmeaustausch, beteiligtes Medium |
DE8804742U1 (de) * | 1988-04-11 | 1988-06-09 | Siemens Ag, 1000 Berlin Und 8000 Muenchen, De | |
DE19511693A1 (de) | 1994-05-26 | 1995-11-30 | Teves Gmbh Alfred | Lenkstockschalter mit Wickelfeder |
US5595712A (en) * | 1994-07-25 | 1997-01-21 | E. I. Du Pont De Nemours And Company | Chemical mixing and reaction apparatus |
DE19511603A1 (de) * | 1995-03-30 | 1996-10-02 | Norbert Dr Ing Schwesinger | Vorrichtung zum Mischen kleiner Flüssigkeitsmengen |
DE19536856C2 (de) * | 1995-10-03 | 1997-08-21 | Danfoss As | Mikromischer und Mischverfahren |
ATE248345T1 (de) | 1999-07-07 | 2003-09-15 | Fluitec Georg Ag | Vorrichtung für den wärmetausch |
DE10203819C2 (de) | 2002-01-31 | 2003-04-17 | Johann Stichlmair | Einbauten für Packungskolonnen |
DE10319367A1 (de) * | 2003-04-29 | 2004-11-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Erstellung eines Hydrauliknetzwerkes für einen optimierten Wärmeübertragungs- und Stofftransport |
DE10326381B4 (de) | 2003-06-12 | 2005-09-22 | Jähn, Peter | Turbulenzerzeuger |
JP4992201B2 (ja) * | 2005-06-07 | 2012-08-08 | 富士ゼロックス株式会社 | マイクロ流体制御方法、マイクロ流体素子およびその製造方法 |
CN102421515A (zh) * | 2009-05-14 | 2012-04-18 | 株式会社日立工业设备技术 | 微反应器系统 |
US9134072B2 (en) * | 2010-03-15 | 2015-09-15 | The Trustees Of Dartmouth College | Geometry of heat exchanger with high efficiency |
DE102010026017A1 (de) | 2010-07-03 | 2012-01-05 | SEVERIN ELEKTROGERÄTE GmbH | Vorrichtung zur Zubereitung von Heißgetränken |
WO2013163398A1 (en) * | 2012-04-25 | 2013-10-31 | Flowserve Management Company | Additive manufactured lattice heat exchanger |
JP6316446B2 (ja) * | 2014-02-04 | 2018-04-25 | サビック グローバル テクノロジーズ ベスローテン フェンノートシャップ | カーボネートの製造方法 |
-
2015
- 2015-08-14 DE DE102015113432.2A patent/DE102015113432A1/de not_active Ceased
-
2016
- 2016-08-12 EP EP16760396.8A patent/EP3334993B1/de active Active
- 2016-08-12 WO PCT/EP2016/069214 patent/WO2017029211A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
DE102015113432A1 (de) | 2017-02-16 |
EP3334993B1 (de) | 2019-11-27 |
WO2017029211A1 (de) | 2017-02-23 |
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