CN112944996A - Compound heat transfer runner and contain its heat transfer board based on subregion is reinforceed - Google Patents
Compound heat transfer runner and contain its heat transfer board based on subregion is reinforceed Download PDFInfo
- Publication number
- CN112944996A CN112944996A CN202110159359.3A CN202110159359A CN112944996A CN 112944996 A CN112944996 A CN 112944996A CN 202110159359 A CN202110159359 A CN 202110159359A CN 112944996 A CN112944996 A CN 112944996A
- Authority
- CN
- China
- Prior art keywords
- flow channel
- heat transfer
- heat exchange
- composite
- enhanced
- 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.)
- Pending
Links
Images
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
- 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
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
-
- 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
- F28F2210/08—Assemblies of conduits having different features
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a composite heat exchange flow channel based on partition reinforcement and a heat exchange plate comprising the same. The composite flow passage provided by the embodiment of the invention consists of a non-enhanced heat transfer section and an enhanced heat transfer section, wherein the non-enhanced heat transfer section adopts a straight flow passage, the heat transfer enhanced section adopts a corrugated flow passage, and the section of the flow passage is in a semicircular shape. Based on the multi-row arrangement of the composite heat exchange flow channels, heat exchange plates for printed circuit board heat exchangers can be manufactured. The invention can flexibly combine the enhanced and non-enhanced heat transfer sections in the continuous flow channel according to the variation of the on-way local flow heat transfer characteristics of the variable property working medium, only adopts the corrugated flow channel for enhancing heat transfer in the area with stronger heat transfer and smaller pressure drop and adopts the straight flow channel in the other areas, thereby reducing the on-way flow total pressure loss while enhancing the heat transfer and achieving the purpose of improving the comprehensive thermal hydraulic performance of the flow channel and the heat exchange plate.
Description
Technical Field
The invention relates to the field of heat exchange, in particular to a composite heat exchange flow channel based on partition reinforcement and a heat exchange plate comprising the same.
Background
As a novel heat exchanger, the printed circuit board heat exchanger has the advantages of compact structure, large heat exchange area of unit volume, high heat exchange efficiency, good operation reliability under extreme conditions of high temperature, high pressure and the like, and shows better application prospect in the fields of energy, petrochemical industry, aerospace, low-temperature refrigeration and the like in recent years. The heat exchanger is formed by stacking a plurality of layers of heat exchange plates and processing the heat exchange plates through a diffusion welding technology, so that the geometric structure of a heat exchange flow channel in each layer of heat exchange plate plays a decisive role in the compactness, the comprehensive thermal hydraulic performance and the like of the heat exchanger. The most commonly used flow passages of the prior printed circuit board heat exchanger are mainly straight flow passages and Z-shaped structures, wherein the straight flow passages have the smallest pressure loss but have poorer heat exchange performance, and the Z-shaped flow passages can greatly improve the heat exchange performance, but the pressure loss can also be increased by several times, thereby consuming more pumping work. Compared with the flow channels with the two structures, the sinusoidal corrugated flow channel has the advantages that the pressure loss is not large while the heat exchange capacity is improved, and the comprehensive thermal hydraulic performance of the heat exchange heat exchanger is improved.
In addition, under the specific heat exchange background of different application fields, such as supercritical carbon dioxide brayton cycle, transcritical organic rankine cycle and the like, the working medium in the heat exchanger is generally under the supercritical pressure condition, and the physical property parameters of the working medium are violently changed in a pseudo-critical area, so that the heat transfer characteristics of the working medium flowing along the way in the flow channel of the heat exchanger are obviously different. For example, in supercritical CO2CO in precooler of Brayton cycle system2In the cooling process of (3), the heat exchange capacity is weak in the high-temperature region and the pressure loss is large, but the heat exchange capacity is remarkably improved in the low-temperature region and the pressure loss is small.
Disclosure of Invention
The invention aims to provide a composite heat exchange flow channel based on partition reinforcement and a heat exchange plate comprising the same, wherein the composite heat exchange flow channel improves the heat exchange capacity of the flow channel and reduces the pressure loss of fluid in the heat exchange process.
In order to achieve the purpose, the invention adopts the technical scheme that: the composite heat exchange runner consists of a non-enhanced heat transfer section and an enhanced heat transfer section which are communicated, wherein a straight runner is adopted in the non-enhanced heat transfer section, and a corrugated runner is adopted in the enhanced heat transfer section.
The central line of the straight flow channel of the non-enhanced heat transfer section of the composite heat exchange flow channel is connected with the wave crest or the wave trough of the central line of the corrugated flow channel of the enhanced heat transfer section, and the straight flow channel and the sinusoidal corrugated flow channel are in smooth transition at the connection part.
The composite heat exchange flow channel is a micro channel processed in an etching or 3D printing mode.
The radius of the channel of the composite heat exchange runner is 0.5-5 mm.
The cross section of the composite heat exchange runner is any one of semicircular, semi-elliptical, circular, elliptical, triangular, rectangular or trapezoidal.
The central line of the corrugated flow channel of the reinforced heat transfer section is a triangular, sine/cosine, semicircular or trapezoidal periodic waveform.
A heat exchange plate based on a composite heat exchange runner reinforced in a subarea mode is provided with a plurality of composite heat exchange runners.
The composite heat exchange flow channel for the printed circuit board heat exchanger and the heat exchange plate comprising the same have the advantages that the direct flow channel is adopted in the area with weak working medium heat transfer capacity and large pressure loss to avoid larger pressure loss, the corrugated structure is adopted in the area with strong heat transfer capacity and small pressure loss to conduct heat transfer enhancement, and the heat transfer capacity of fluid is further utilized, so that the comprehensive thermotechnical hydraulic performance of the flow channel can be further improved.
Drawings
FIG. 1(a) is a schematic structural view of a straight flow passage and a heat exchange plate comprising the same;
fig. 1(b) is a schematic structural view of a corrugated (sine wave) flow channel and a heat exchange plate comprising the same;
FIG. 2(a) is a schematic view of a composite heat exchange flow channel according to an embodiment of the present invention;
fig. 2(b) is a schematic structural diagram of a heat exchange plate comprising a composite heat exchange flow channel according to an embodiment of the present invention;
FIG. 3 is a three-dimensional view of a composite flow channel and a heat exchange plate comprising the same according to an embodiment of the invention;
FIG. 4 is a schematic view of a portion of a wave form that may be used in the corrugated flow path of the enhanced heat transfer section of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the following embodiments and the accompanying drawings.
The embodiment of the invention provides a composite heat exchange flow channel based on zone strengthening and a heat exchange plate comprising the same. Fig. 2(a) shows a composite heat exchange flow channel used in the embodiment of the present invention, which is composed of a non-enhanced heat transfer section 1 and an enhanced heat transfer section 2, wherein a straight flow channel (see fig. 1(a)) is used in the non-enhanced heat transfer section 1, and a sinusoidal corrugated flow channel (see fig. 1(b)) is used in the enhanced heat transfer section 2. The central line of the straight flow channel of the non-enhanced heat transfer section of the composite heat exchange flow channel is connected with the wave crest or the wave trough of the central line of the corrugated flow channel of the enhanced heat transfer section, and the connecting part of the straight flow channel and the corrugated flow channel is in smooth transition. The wavelength P and the amplitude A of the sine ripple flow channel are constant values. Fig. 2(b) shows a heat exchange plate 3 including a plurality of composite heat exchange flow channels according to an embodiment of the present invention, and a three-dimensional view of the heat exchange plate is shown in fig. 3, and a printed circuit board heat exchanger satisfying the use temperature and pressure-bearing requirements can be processed by processing means such as stacking, diffusion welding, and the like.
The composite heat exchange flow channel is a micro channel processed in an etching or 3D printing mode.
The optional range of the channel radius of the composite heat exchange runner in the embodiment is 0.5-5 mm, and the channel radius of the composite heat exchange runner can be properly adjusted according to the heat exchange quantity, the pressure condition, the processing capacity and the like.
In the present embodiment, the cross section of the flow channel is semicircular, but in other embodiments, the cross section of the flow channel can be other shapes such as semi-elliptical, circular, elliptical, rectangular, trapezoidal, or triangular.
In the present embodiment, the reinforced heat transfer section 2 uses a sinusoidal corrugated flow channel, and in other embodiments, the corrugated flow channel of the reinforced heat transfer section 2 may use waveforms with different shapes, such as triangle (zigzag), trapezoid, semicircle, ellipse, etc., and a part of the waveforms are as shown in fig. 4.
The composite heat exchange runner provided by the embodiment of the invention adopts the direct flow channel in the region (namely the low-density region) with weak heat transfer capacity and large pressure loss of the working medium to avoid larger pressure loss, and adopts the corrugated structure to carry out heat transfer enhancement in the region with strong heat transfer capacity and small pressure loss to further improve the heat transfer capacity of the composite heat exchange runner, so that the further improvement of the comprehensive thermotechnical hydraulic performance can be realized, and the composite heat exchange runner has important practical significance and application prospect for the design of a high-efficiency low-resistance heat exchange system taking variable-property fluid as the working medium.
Claims (7)
1. The composite heat exchange flow channel based on partition reinforcement is characterized by comprising a non-reinforced heat transfer section (1) and a reinforced heat transfer section (2) which are communicated, wherein a straight flow channel is adopted in the non-reinforced heat transfer section (1), and a corrugated flow channel is adopted in the reinforced heat transfer section (2).
2. The composite heat exchange flow channel based on the zonal reinforcement of the claim 1, wherein the central line of the straight flow channel of the non-reinforced heat transfer section (1) of the composite heat exchange flow channel is connected with the wave crest or the wave trough of the central line of the corrugated flow channel of the reinforced heat transfer section (2), and the straight flow channel and the sinusoidal corrugated flow channel are in smooth transition at the connection position.
3. The composite heat exchange flow channel based on partition reinforcement of claim 1, wherein the composite heat exchange flow channel is a micro channel processed by etching or 3D printing.
4. The composite heat exchange flow channel based on partition reinforcement of claim 1, wherein the channel radius of the composite heat exchange flow channel is 0.5-5 mm.
5. The composite heat exchange flow channel based on partition reinforcement of claim 1, wherein the cross section of the composite heat exchange flow channel is any one of semicircular, semi-elliptical, circular, elliptical, triangular, rectangular or trapezoidal.
6. The composite heat exchange flow channel based on partition reinforcement of claim 5, characterized in that the centerline of the corrugated flow channel of the reinforced heat transfer section (2) is a triangular, sine/cosine, semicircular or trapezoidal periodic waveform.
7. A heat exchanger plate based on zoned enhanced composite heat exchange flow channels according to any of claims 1-6, characterized in that a plurality of composite heat exchange flow channels are arranged on the heat exchanger plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110159359.3A CN112944996A (en) | 2021-02-05 | 2021-02-05 | Compound heat transfer runner and contain its heat transfer board based on subregion is reinforceed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110159359.3A CN112944996A (en) | 2021-02-05 | 2021-02-05 | Compound heat transfer runner and contain its heat transfer board based on subregion is reinforceed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112944996A true CN112944996A (en) | 2021-06-11 |
Family
ID=76242407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110159359.3A Pending CN112944996A (en) | 2021-02-05 | 2021-02-05 | Compound heat transfer runner and contain its heat transfer board based on subregion is reinforceed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112944996A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114111393A (en) * | 2021-11-24 | 2022-03-01 | 中国石油大学(华东) | Heat exchange plate, core and printed circuit board heat exchanger based on supercritical working medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440913A (en) * | 2016-10-31 | 2017-02-22 | 航天海鹰(哈尔滨)钛业有限公司 | Novel heat exchanger core |
| CN107782180A (en) * | 2016-08-31 | 2018-03-09 | 航天海鹰(哈尔滨)钛业有限公司 | A kind of heat exchanger core for being used for more than three kinds fluid heat exchanges |
| CN111059934A (en) * | 2020-01-06 | 2020-04-24 | 西安热工研究院有限公司 | Composite construction printed circuit board formula heat exchanger core |
| CN112097552A (en) * | 2020-08-18 | 2020-12-18 | 中国原子能科学研究院 | Combined compact heat exchanger core |
-
2021
- 2021-02-05 CN CN202110159359.3A patent/CN112944996A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782180A (en) * | 2016-08-31 | 2018-03-09 | 航天海鹰(哈尔滨)钛业有限公司 | A kind of heat exchanger core for being used for more than three kinds fluid heat exchanges |
| CN106440913A (en) * | 2016-10-31 | 2017-02-22 | 航天海鹰(哈尔滨)钛业有限公司 | Novel heat exchanger core |
| CN111059934A (en) * | 2020-01-06 | 2020-04-24 | 西安热工研究院有限公司 | Composite construction printed circuit board formula heat exchanger core |
| CN112097552A (en) * | 2020-08-18 | 2020-12-18 | 中国原子能科学研究院 | Combined compact heat exchanger core |
Non-Patent Citations (1)
| Title |
|---|
| 吕义高等: "正弦波纹流道印刷电路板换热器热工水力性能", 《化工学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114111393A (en) * | 2021-11-24 | 2022-03-01 | 中国石油大学(华东) | Heat exchange plate, core and printed circuit board heat exchanger based on supercritical working medium |
| CN114111393B (en) * | 2021-11-24 | 2023-08-29 | 中国石油大学(华东) | Heat exchange plate based on supercritical working medium, core body and printed circuit board type heat exchanger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107144158B (en) | Compact heat exchanger for heat exchange between supercritical carbon dioxide and water | |
| CN101158561A (en) | Plate heat exchanger composite corrugated plate bind | |
| CN109163586B (en) | Spiral runner printed circuit board heat exchanger | |
| CN207963578U (en) | Fin plate heat exchanger | |
| CN111059929A (en) | Novel micro-channel heat exchanger with fin structure | |
| CN204301586U (en) | Porous ripple fin-type plate-fin heat exchanger | |
| CN101922870B (en) | Dividing wall type heat exchanger | |
| CN108955316A (en) | A kind of multiple flow printed circuit board heat exchanger | |
| CN212512623U (en) | Compact multi-stage series PCHE heat exchanger | |
| CN111721150A (en) | Compact multi-stage series PCHE heat exchanger and heat exchange method | |
| CN108592665A (en) | Fin plate heat exchanger | |
| CN112880444A (en) | Printed circuit board heat exchanger and core for heat exchange of variable-property fluid | |
| CN112696950A (en) | Micro-fin heat exchange device | |
| CN112944996A (en) | Compound heat transfer runner and contain its heat transfer board based on subregion is reinforceed | |
| CN102116591A (en) | Double-face fin plate tube structure for air cooler | |
| CN114521093B (en) | Unit flow path, heat exchanger and liquid cooling plate | |
| CN108061471B (en) | A kind of multiple-unit composite screw plate heat exchanger | |
| CN104390508A (en) | Porous wavy fin template fin heat exchanger | |
| CN116697785A (en) | Three-fluid printed circuit board type heat exchanger core body and vaporization device | |
| CN101696862A (en) | Full welded plate bundle with reinforced structures | |
| CN107966057A (en) | A kind of plate heat exchanger and its application method | |
| CN113701531B (en) | Vertical titanium alloy microchannel inner spiral tube plate type heat exchanger | |
| CN208333192U (en) | A kind of compact heat exchanger of periodicity variable section runner | |
| CN105547017A (en) | Multi-layer coaxial cylinder dividing wall fin type heat exchanger | |
| CN115628631A (en) | Six-hole plate type heat exchanger plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210611 |
|
| RJ01 | Rejection of invention patent application after publication |