CN111721147B - Heat exchange unit and heat exchange reactor - Google Patents
Heat exchange unit and heat exchange reactor Download PDFInfo
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- CN111721147B CN111721147B CN201910223489.1A CN201910223489A CN111721147B CN 111721147 B CN111721147 B CN 111721147B CN 201910223489 A CN201910223489 A CN 201910223489A CN 111721147 B CN111721147 B CN 111721147B
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- heat exchange
- reaction fluid
- exchange medium
- exchange unit
- channel
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 96
- 239000012530 fluid Substances 0.000 claims abstract description 77
- 229910000838 Al alloy Inorganic materials 0.000 claims description 19
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 2
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- 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
- F28D7/08—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 otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—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 otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/2415—Tubular reactors
- B01J19/242—Tubular reactors in series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00002—Chemical plants
- B01J2219/00027—Process aspects
- B01J2219/00033—Continuous processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00092—Tubes
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention relates to the field of heat exchangers, and discloses a heat exchange unit and a heat exchange reactor, wherein the heat exchange unit comprises a base body (4), and a heat exchange medium channel (1) and a reaction fluid channel (2) which are arranged in the base body (4), and is characterized in that the heat exchange medium channel (1) is positioned in the center of the heat exchange unit, and a plurality of reaction fluid channels (2) are dispersedly wrapped outside the heat exchange medium channel (1); wherein the heat exchange medium channel (1) is parallel to the axial direction of the reaction fluid channel (2). For the highly exothermic reaction process with higher risk, the control of stable process parameters and the improvement of passive intrinsic safety level can be realized.
Description
Technical Field
The invention relates to the field of heat exchangers, in particular to a heat exchange unit and a heat exchange reactor.
Background
In the industrial industry, compared with the batch and semi-batch reaction processes, the continuous reaction process has the advantages of high reaction efficiency, easily controlled process parameters, intrinsically safe and the like, but the heat taking power of heat exchange equipment in the continuous reaction process cannot meet the production requirement, particularly the heat taking power of strong heat release reaction process is easy to cause production safety accidents, so that a heat exchanger which has high heat taking power and improves the intrinsic safety level of the reaction process is required to be provided to meet the requirement.
Disclosure of Invention
An object of the present invention is to provide a heat exchange unit, which has better heat exchange efficiency while improving heat exchange performance.
In order to achieve the above object, the present invention provides a heat exchange unit, which includes a base, and a heat exchange medium channel and a reaction fluid channel disposed inside the base, wherein the heat exchange medium channel is located at the center of the heat exchange unit, and the plurality of reaction fluid channels are dispersedly wrapped outside the heat exchange medium channel; wherein the heat exchange medium channel is parallel to the axial direction of the reaction fluid channel.
Preferably, the feeding port and the discharging port of any one of the reaction fluid channels are respectively connected with the discharging port of the adjacent reaction fluid channel and the feeding port of the other adjacent reaction fluid channel, and the connected reaction fluid channel is wrapped outside the heat exchange medium channel positioned in the center in a winding manner for multiple times.
Preferably, adjacent 2 reaction fluid channels are connected by elbow sections.
Preferably, adjacent reaction fluid channels are spaced apart.
Preferably, the number of the heat exchange medium channels positioned at the center of the heat exchange unit is 1 or more.
Preferably, a plurality of the heat exchange medium channels are arranged in parallel.
Preferably, the reaction fluid channels are spaced apart from adjacent heat exchange medium channels.
Preferably, the number of the reaction fluid channels is 3 or more.
Preferably, the ratio of the inner diameters of the heat exchange medium channel to the reaction fluid channel is 1.5-2.5: 1.
preferably, the cross-sections of the heat exchange medium channel and the reaction fluid channel are regular polygons, rectangles, ellipses or circles.
Preferably, the substrate is a silicon-aluminum alloy.
Preferably, the heat exchange medium channel is silicon-aluminum alloy.
Preferably, the silicon content in the silicon-aluminum alloy is 12-20 wt%.
Preferably, the heat exchange medium channels and the reaction fluid channels are fixed to the substrate.
Another object of the present invention is to provide a heat exchanger comprising at least one heat exchange unit according to the present invention as described above.
Through the technical scheme, the reaction fluid channels and the heat exchange medium channels are arranged in a staggered and overlapped mode in different forms in a manner that the reaction fluid channels are dispersedly wrapped on the heat exchange medium channels, so that the heat generated by the reaction is taken by the heat exchange medium in real time. The heat exchange unit in the mode has larger heat taking area and larger heat transfer coefficient, so that the heat taking power is dozens of times that of a conventional kettle type reactor and dozens of times that of a conventional tubular reactor, and the control of stable process parameters and the improvement of passive intrinsic safety level can be realized for a high-risk strong heat release reaction process; meanwhile, the materials of the heat exchange unit are optimized, and the silicon-aluminum alloy has higher heat conductivity coefficient and can realize faster heat exchange between the reaction fluid channel and the heat exchange medium channel; meanwhile, the material has larger specific heat capacity and very strong heat absorption and storage capacity, and can provide larger buffer capacity when the reaction is out of control, thereby further improving the high-strength heat taking capacity in the reaction process and improving the intrinsic safety level of the reaction process.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a reaction fluid channel and a heat exchange medium channel of a heat exchange unit;
fig. 2 is a schematic diagram of the overall structure of the heat exchange unit.
Description of the reference numerals
1. Heat exchange medium channel 11 and heat exchange medium inlet
12. Heat exchange medium outlet 2 and reaction fluid channel
21. Reaction fluid inlet 22, reaction fluid outlet
3. Bend section 4, base body
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, the use of directional terms such as "upper, lower, left, right" and "above" generally means the description of the positional relationship of the components with respect to each other with respect to the orientation shown in the drawings or with respect to the vertical, vertical or gravitational direction, unless otherwise indicated.
As shown in fig. 1-2, the present invention firstly provides a heat exchange unit, which comprises a base 4, and a heat exchange medium channel 1 and a reaction fluid channel 2 arranged inside the base 4, wherein the heat exchange medium channel 1 is located at the center of the heat exchange unit, and a plurality of reaction fluid channels 2 are dispersedly wrapped outside the heat exchange medium channel 1; the heat exchange medium channels 1 are parallel to the axial direction of the reaction fluid channel 2.
As shown in fig. 1, as a preferable mode, an inlet and an outlet of any one of the reaction fluid channels 2 are respectively connected with an outlet of an adjacent reaction fluid channel and an inlet of another adjacent reaction fluid channel, and the connected reaction fluid channel 2 is wrapped outside the heat exchange medium channel 1 located at the center in a winding-around manner for a plurality of times, and the adjacent 2 reaction fluid channels 2 are connected by a pipe bending section 3.
In the present invention, it is preferable that adjacent reaction fluid channels 2 are spaced apart; more preferably, adjacent reaction fluid channels 2 are spaced 4-6 times the diameter of the reaction fluid channels. The heat extraction channels are dispersedly wrapped by the reaction channels through the interval arrangement of the connected pipelines, so that local hot spots do not exist in the reactor, and the temperature distribution is uniform.
In the present invention, the number of the heat exchange medium channels 1 located at the center of the heat exchange unit is preferably 1 or more, and may be, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, etc.
In the present invention, it is preferable that a plurality of heat exchange medium channels 1 are arranged in parallel.
In the present invention, it is preferable that the reaction fluid channel 2 is spaced apart from the adjacent heat exchange medium channel 1, and more preferably, the reaction fluid channel 2 is spaced apart from the adjacent heat exchange medium channel 1 by 2 to 4 times the diameter of the reaction fluid channel.
In the present invention, it is preferable that the number of the reaction fluid channels 2 is 3 or more, more preferably 3 to 20, further preferably 3 to 15, further preferably 3 to 10, further preferably 5 to 8, and particularly preferably 8.
In the present invention, it is preferable that the ratio of the inner diameters of the heat exchange medium channel 1 to the reaction fluid channel 2 is 1.5 to 4: 1, preferably 1.5-2.5: 1. the flow of the heat exchange medium is far larger than that of the reaction fluid in the mode, so that the stability of the reaction temperature is also ensured, and the risk of reaction runaway is further reduced.
In the present invention, it is preferable that the cross-sections of the heat exchange medium channels 1 and the reaction fluid channels 2 are regular polygons, rectangles, ovals, or circles. In a preferred mode, the cross section of the reaction fluid in the heat exchange medium channel 1 and the reaction fluid channel 2 is circular.
In the present invention, the base 4 is preferably a silicon-aluminum alloy, a silicon-stainless steel alloy, or an aluminum alloy, more preferably a silicon-aluminum alloy.
Further, in order to increase the heat exchange efficiency, it is preferable that the heat exchange medium channel 1 is a silicon-aluminum alloy, a silicon-stainless steel alloy, or an aluminum alloy, more preferably a silicon-aluminum alloy.
In order to further increase the heat exchange efficiency, it is preferable that the inside of the base 4 be filled with a filler, except for the heat exchange medium channels 1 and the reaction fluid channels. The filler is various fillers with heat exchange effect, and preferably is one or more of silicon-aluminum alloy and silicon-stainless steel alloy.
In the present invention, preferably, the silicon content in the silicon-aluminum alloy is 10 to 30 wt%, more preferably 12 to 20 wt%.
In the present invention, it is preferable that the heat exchange medium channel 1 and the reaction fluid channel 2 are fixed in the base 4, respectively, and the contact heat transfer area is ensured as much as possible by welding or the like.
In the invention, the heat exchange unit is made of silicon-aluminum alloy, compared with the traditional material, the silicon-aluminum alloy has higher heat conductivity coefficient, and can realize faster heat exchange between the reaction fluid channel and the heat exchange medium channel; meanwhile, the material has larger specific heat capacity, has strong heat absorption and storage capacity, and can provide larger buffer capacity when the reaction is out of control.
The invention also provides a heat exchanger which comprises at least one heat exchange unit.
In the present invention, the number of heat exchange units in the heat exchanger may be, for example, 1 to 20, preferably 5 to 10, depending on the installation space of the heat exchanger and the need for heat exchange capacity.
The present invention will be described in detail below with reference to examples, but the present invention is not limited to the following examples.
Example 1
With the structure shown in fig. 1-2, the substrate and the heat exchange medium channel are made of silicon-aluminum alloy (silicon content is 15 wt%).
The heat exchange medium channels 1 and the reaction fluid channels 2 are respectively fixed in the matrix 4, and 4 heat exchange medium channels are in a straight tube structure; the reaction fluid channel is composed of 8 straight pipes, other pipe openings except the reaction fluid inlet 21 and the reaction fluid outlet 22 are respectively connected with the adjacent reaction fluid channels end to end through the bent pipe section 3, so that the 8 straight pipes form a complete coil pipe, the coil pipe is dispersedly wrapped around the heat exchange medium channel, wherein the interval between the adjacent reaction fluid channels 2 is 4-6 times of the diameter of the reaction fluid channel, and the interval between the reaction fluid channel 2 and the adjacent heat exchange medium channel 1 is 2-4 times of the diameter of the reaction fluid channel. The pipe diameter ratio of the heat exchange medium channel to the reaction fluid channel is 2: 1.
In the use process, a heat exchange medium is introduced into the pipeline through the heat exchange medium inlet 11 and flows out from the heat exchange medium outlet 12 along the pipeline, and a reaction fluid enters through the reaction fluid inlet 21 and flows out from the reaction fluid outlet after passing through the coil.
The heat exchange unit provided by the invention is made of silicon-aluminum alloy, has higher heat conductivity coefficient compared with the traditional material, and can realize faster heat exchange between the reaction fluid channel and the heat exchange medium channel; meanwhile, the material has larger specific heat capacity, has strong heat absorption and storage capacity, and can provide larger buffer capacity when the reaction is out of control; and moreover, the reaction channels are dispersedly wrapped on the heat taking channels through the interval arrangement of the connected pipelines, so that the heat exchange unit has no local hot spot, the temperature distribution is uniform, meanwhile, the flow of the heat taking fluid is far greater than that of the reaction fluid, the stability of the reaction temperature is also ensured, and the risk of reaction runaway is reduced.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (13)
1. A heat exchange unit comprises a base body (4), and a heat exchange medium channel (1) and a reaction fluid channel (2) which are arranged inside the base body (4), and is characterized in that the heat exchange medium channel (1) is positioned at the center of the heat exchange unit, and a plurality of reaction fluid channels (2) are dispersedly wrapped outside the heat exchange medium channel (1);
wherein the heat exchange medium channel (1) is parallel to the axial direction of the reaction fluid channel (2);
the inlet and the outlet of any one of the reaction fluid channels (2) are respectively connected with the outlet of the adjacent reaction fluid channel and the inlet of the other adjacent reaction fluid channel, and the connected reaction fluid channel (2) is wrapped outside the heat exchange medium channel (1) in the center in a winding manner for multiple times;
the ratio of the inner diameters of the heat exchange medium channel (1) to the reaction fluid channel (2) is 1.5-2.5: 1.
2. a heat exchange unit according to claim 1, wherein adjacent 2 reaction fluid channels (2) are connected by bend sections (3).
3. A heat exchange unit according to claim 1, wherein adjacent reaction fluid channels (2) are spaced apart.
4. A heat exchange unit according to claim 1, wherein the number of the heat exchange medium channels (1) located in the center of the heat exchange unit is 1 or more.
5. A heat exchange unit according to claim 4, wherein a plurality of the heat exchange medium channels (1) are arranged in parallel.
6. A heat exchange unit according to claim 4, wherein the reaction fluid channel (2) is spaced apart from an adjacent heat exchange medium channel (1).
7. A heat exchange unit according to claim 1, wherein the number of reaction fluid channels (2) is more than 3.
8. The heat exchange unit according to any one of claims 1 to 7, wherein the cross-section of the heat exchange medium channels (1) and the cross-section of the reaction fluid channels (2) are regular polygons, rectangles, ovals or circles.
9. The heat exchange unit according to any one of claims 1 to 7, wherein the substrate (4) is a silicon-aluminium alloy.
10. A heat exchange unit according to claim 9, wherein the heat exchange medium channels (1) are of silicon-aluminium alloy.
11. The heat exchange unit of claim 9, wherein the silicon content of the silicon-aluminum alloy is 12-20 wt%.
12. A heat exchange unit according to any one of claims 1-7, wherein the heat exchange medium channels (1) and the reaction fluid channels (2) are fixed to a substrate (4).
13. A heat exchanger, characterized in that it comprises at least one heat exchange unit according to any one of claims 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910223489.1A CN111721147B (en) | 2019-03-22 | 2019-03-22 | Heat exchange unit and heat exchange reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910223489.1A CN111721147B (en) | 2019-03-22 | 2019-03-22 | Heat exchange unit and heat exchange reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111721147A CN111721147A (en) | 2020-09-29 |
| CN111721147B true CN111721147B (en) | 2022-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910223489.1A Active CN111721147B (en) | 2019-03-22 | 2019-03-22 | Heat exchange unit and heat exchange reactor |
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| Country | Link |
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| CN (1) | CN111721147B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2823959Y (en) * | 2004-04-13 | 2006-10-04 | 东莞市广大制冷有限公司 | Multi-loop sleeve type heat exchanger |
| CN102037305A (en) * | 2008-03-20 | 2011-04-27 | 法雷奥热系统公司 | Heat exchanger and integrated air-conditioning assembly including such exchanger |
| CN102121799A (en) * | 2011-03-10 | 2011-07-13 | 中山市麦科尔热能技术有限公司 | A double-layer threaded turbulence heat exchanger |
| CN102313401A (en) * | 2011-10-18 | 2012-01-11 | 杭州沈氏换热器有限公司 | Microchannel heat exchanger |
| CN104214995A (en) * | 2014-09-05 | 2014-12-17 | 哈尔滨工业大学 | Immersed film type heat exchanger |
| CN104254672A (en) * | 2012-02-16 | 2014-12-31 | 埃贝斯佩歇废气技术合资公司 | Steam generator for a rankine process |
| CN205642108U (en) * | 2016-01-19 | 2016-10-12 | 江苏杭钢精密铝业有限公司 | Heat exchanger of porous microchannel section bar |
| CN206496682U (en) * | 2016-08-30 | 2017-09-15 | 广州市华德工业有限公司 | A kind of heat exchanger fin |
| EP2568229B1 (en) * | 2011-09-12 | 2019-08-07 | FläktGroup Deutschland GmbH | Heat exchanger |
-
2019
- 2019-03-22 CN CN201910223489.1A patent/CN111721147B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2823959Y (en) * | 2004-04-13 | 2006-10-04 | 东莞市广大制冷有限公司 | Multi-loop sleeve type heat exchanger |
| CN102037305A (en) * | 2008-03-20 | 2011-04-27 | 法雷奥热系统公司 | Heat exchanger and integrated air-conditioning assembly including such exchanger |
| CN102121799A (en) * | 2011-03-10 | 2011-07-13 | 中山市麦科尔热能技术有限公司 | A double-layer threaded turbulence heat exchanger |
| EP2568229B1 (en) * | 2011-09-12 | 2019-08-07 | FläktGroup Deutschland GmbH | Heat exchanger |
| CN102313401A (en) * | 2011-10-18 | 2012-01-11 | 杭州沈氏换热器有限公司 | Microchannel heat exchanger |
| CN104254672A (en) * | 2012-02-16 | 2014-12-31 | 埃贝斯佩歇废气技术合资公司 | Steam generator for a rankine process |
| CN104214995A (en) * | 2014-09-05 | 2014-12-17 | 哈尔滨工业大学 | Immersed film type heat exchanger |
| CN205642108U (en) * | 2016-01-19 | 2016-10-12 | 江苏杭钢精密铝业有限公司 | Heat exchanger of porous microchannel section bar |
| CN206496682U (en) * | 2016-08-30 | 2017-09-15 | 广州市华德工业有限公司 | A kind of heat exchanger fin |
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| Publication number | Publication date |
|---|---|
| CN111721147A (en) | 2020-09-29 |
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