CN111356340A - High heat flux impingement cooling type supercritical carbon dioxide radiator - Google Patents
High heat flux impingement cooling type supercritical carbon dioxide radiator Download PDFInfo
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- CN111356340A CN111356340A CN202010151159.9A CN202010151159A CN111356340A CN 111356340 A CN111356340 A CN 111356340A CN 202010151159 A CN202010151159 A CN 202010151159A CN 111356340 A CN111356340 A CN 111356340A
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- fluid
- plate
- carbon dioxide
- supercritical carbon
- cover plate
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20345—Sprayers; Atomizers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B19/00—Machines, plants or systems, using evaporation of a refrigerant but without recovery of the vapour
- F25B19/02—Machines, plants or systems, using evaporation of a refrigerant but without recovery of the vapour using fluid jet, e.g. of steam
- F25B19/04—Machines, plants or systems, using evaporation of a refrigerant but without recovery of the vapour using fluid jet, e.g. of steam using liquid jet, e.g. of water
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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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/001—Ejectors not being used as compression device
- F25B2341/0012—Ejectors with the cooled primary flow at high pressure
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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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention relates to a high-heat-flux impact cooling type supercritical carbon dioxide radiator, which comprises a heated copper plate and a jet flow heat dissipation part; the heat exchange fluid supercritical carbon dioxide is a heated copper plate cooled by utilizing an array jet hole for jetting; a fluid inlet is arranged on a cover plate of the radiator, jet holes are distributed on a partition plate of an upper liquid inlet cavity, and internal flow channels of fluid are distributed in the radiator; the upper part of the heated copper plate is distributed with bulges; the side surface of the radiator is distributed with fluid outlets; the radiator fluid utilizes the characteristic of supercritical carbon dioxide, and the specific heat of the radiator fluid has a peak value in a quasi-critical area. The invention utilizes array injection, and can effectively improve the heat exchange effect by changing the injection aperture and the jet hole spacing. The invention utilizes the characteristic of high specific heat of the supercritical fluid to obviously improve the heat exchange effect.
Description
Technical Field
The invention belongs to the technical field of supercritical fluid heat exchange, and particularly relates to a high-heat-flux impact cooling type supercritical carbon dioxide radiator.
Background
Management of high heat flux remains a persistent challenge for emerging microelectronic devices and concentrated solar thermal energy production. For microelectronics (e.g., microprocessors, radar, laser diodes) in the civil and defense sectors, the transition to 3D integrated circuits exacerbates the cooling challenge, increasing the thermal resistance of the internal heat source. With the increasing density of electronic packaging, the liquid circulation cooling is difficult to meet the requirement of high-power electronic cooling. New solutions are needed to cool high heat flux electronics and instruments.
The jet cooling technology is characterized in that a high-speed jet fluid impacts a heat transfer surface in a normal direction, a very thin speed and temperature boundary layer is formed near a stagnation point, high turbulence intensity generated by the high-speed jet is used for obtaining large heat exchange efficiency, and the jet cooling technology has a remarkable cooling effect on local high temperature of a heat source with high heat flow density. Jet cooling is much more efficient than liquid circulation cooling, and is currently the leading technology in the field of electronic cooling. The jet impact has extremely high heat exchange coefficient, wherein the heat exchange effect of the liquid working medium is better than that of the gas working medium, but the gas working medium is easy to obtain, has low cost and is difficult to generate chemical reaction with the surface during working, so the gas is the most common to jet the working medium in domestic and foreign researches. The injection process is a throttling process, and the scorched water effect indicates that the throttling can reduce the temperature of the working medium so as to improve the heat exchange effect. The micro-channel jet technology integrates two high-performance heat dissipation technologies of impact jet cooling and micro-channel cooling, and the micro-channel array jet enables the temperature of the cooled surface to be uniform, so that the problems of uneven temperature distribution along the fluid flowing direction and thermal stress caused by the uneven temperature distribution only by applying a micro-channel heat sink are solved.
Meanwhile, the supercritical fluid has very high specific heat capacity at constant pressure in a quasi-critical area, which is 10 times or even 100 times that of the conventional fluid, and the working medium can carry a large amount of heat to ensure that the temperature is raised slightly, so that the supercritical fluid has extremely high heat transfer performance. The heat dissipation capability of electronic devices and other equipment can be greatly improved by utilizing the special heat transfer capability of the quasi-critical zone.
Disclosure of Invention
To solve the problemThe invention aims to provide a high-heat-flux impact cooling type supercritical carbon dioxide radiator, which utilizes supercritical carbon dioxide (sCO)2) As a working fluid to manage extreme heat fluxes in electronic cooling applications. In the quasi-critical region, sCO2Has extremely high volumetric heat capacity, can operate with low pumping requirements, can carry away extremely high heat flux, and has no potential of two-phase critical heat flow density and flow instability.
In order to achieve the purpose, the invention adopts the technical scheme that:
a high heat flux impingement cooling type supercritical carbon dioxide radiator comprises a heated copper plate 6 and a cover plate 1 covering the heated copper plate 6, wherein the cover plate 1 forms a box-shaped body with an upper liquid inlet cavity 2, a fluid inlet 9 into which supercritical carbon dioxide fluid flows is arranged in the middle of the top of the cover plate 1, a partition plate 3 is transversely arranged in the middle of the upper liquid inlet cavity 2, the front end and the rear end of the partition plate 3 are connected with the front inner wall and the rear inner wall of the cover plate 1, an array type jet hole 4 is formed in the partition plate 3, and a jet pipe 5 with the same aperture is connected below each jet hole 4; a plurality of bulges 12 are arranged on the heated copper plate 6 at corresponding positions at the lower part of the partition plate 3, a left guide plate 11-1 and a right guide plate 11-2 are respectively arranged on the heated copper plate 6 which is positioned at the left side edge and the right side edge of the partition plate 3 and corresponds downwards, the outer side areas of the left guide plate 11-1 and the right guide plate 11-2 are respectively a left fluid internal flow channel 8-1 and a right fluid internal flow channel 8-2, and a left fluid outlet 10 and a right fluid outlet 7 are respectively arranged on the left fluid internal flow channel 8-1 and the right fluid internal flow channel 8-2; when the left guide plate 11-1 is connected with the inner wall of the rear side of the cover plate 1 and is not connected with the inner wall of the front side of the cover plate 1, the right guide plate 11-2 is not connected with the inner wall of the rear side of the cover plate 1 and is connected with the inner wall of the front side of the cover plate 1, and when the left guide plate 11-1 is not connected with the inner wall of the rear side of the cover plate 1 and is connected with the inner wall of the front side of the cover plate 1, the right guide plate 11-2 is connected with the inner wall of the rear side of the cover plate 1 and is not connected with the inner; supercritical carbon dioxide fluid enters the upper liquid inlet cavity 2 through the fluid inlet 9, is sprayed onto the heated copper plate 6 through the array-type jet holes 4 and the jet pipes 5, then flows into the left fluid internal flow channel 8-1 and the right fluid internal flow channel 8-2 through the left guide plate 11-1 and the right guide plate 11-2 respectively and flows out through the left fluid outlet 10 and the right fluid outlet 7 to take away heat on the heated copper plate 6.
The bulges 12 are arranged in an array, distributed below the jet pipe 5 and staggered with the jet pipe 5.
The inner diameter of the jet pipe 5 is 0.2mm-4mm, and the outer diameter is 1.5-3 times of the inner diameter.
The left fluid outlet 10 and the right fluid outlet 7 are respectively arranged on the different sides of the left fluid internal flow passage 8-1 and the right fluid internal flow passage 8-2 and are respectively positioned on the sides which are far away from the left and right guide plates and are not connected with the front and rear inner walls of the cover plate.
The fluid inlet 9 is circular to facilitate connection to a pipe.
Compared with the prior art, the invention has the following beneficial effects:
the invention utilizes the characteristic that the supercritical carbon dioxide fluid has large specific heat in the pseudo-critical area (ten times or even more than one hundred times of the normal-temperature normal-pressure fluid), and in the pseudo-critical area, the supercritical carbon dioxide has extremely high specific heat capacity with fixed volume, can operate under the condition of low pumping requirement, and has no potential possibility of unstable two-phase critical heat flow density and flow. The partition board above the radiator is provided with the array jet hole, a very thin speed and temperature boundary layer is formed near a stagnation point by utilizing the jet impact cooling characteristic, and a high turbulence intensity generated by the jet to obtain larger heat exchange efficiency, the heat exchange plate has obvious cooling effect on local high temperature of a high heat flow density heat source, and the extremely high heat flux (300 plus 900W/cm) can be obtained by combining the characteristics of large specific heat of a supercritical carbon dioxide pseudo-critical area and jet impact cooling2) Take away and quickly cool the high-temperature channel heat exchange equipment.
Drawings
Fig. 1 is a left side view cross-sectional schematic view of a high heat flux impingement cooled supercritical carbon dioxide heat sink in accordance with the present invention.
Fig. 2 is a schematic top view cross-section of a high heat flux impingement cooled supercritical carbon dioxide heat sink in accordance with the present invention.
Fig. 3 is a perspective view of a high heat flux impingement cooled supercritical carbon dioxide heat sink in accordance with the present invention.
Reference numbers in the figures: the device comprises a cover plate 1, an upper liquid inlet cavity 2, a partition plate 3, an array jet hole 4, a jet pipe 5, a heated copper plate 6, a right fluid outlet 7, a left fluid internal flow passage 8-1, a right fluid internal flow passage 8-2, a fluid inlet 9, a left fluid outlet 10, a left guide plate 11-1, a right guide plate 11-2 and a bulge 12.
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 in detail with reference to the following embodiments and the accompanying drawings.
As shown in fig. 1, 2 and 3, the high heat flux impingement cooling type supercritical carbon dioxide radiator comprises a heated copper plate 6 and a cover plate 1 covering the heated copper plate 6, wherein the cover plate 1 forms a box-shaped body with an upper liquid inlet cavity 2, a fluid inlet 9 for supercritical carbon dioxide fluid to flow in is arranged in the middle of the top of the cover plate 1, a partition plate 3 is transversely arranged in the middle of the upper liquid inlet cavity 2, the front end and the rear end of the partition plate 3 are connected with the front inner wall and the rear inner wall of the cover plate 1, an array-type jet hole 4 is formed in the partition plate 3, and a jet pipe 5 with the same aperture is connected below each jet hole 4; a plurality of bulges 12 are arranged on the heated copper plate 6 at corresponding positions at the lower part of the partition plate 3, a left guide plate 11-1 and a right guide plate 11-2 are respectively arranged on the heated copper plate 6 which is positioned at the left side edge and the right side edge of the partition plate 3 and corresponds downwards, the outer side areas of the left guide plate 11-1 and the right guide plate 11-2 are respectively a left fluid internal flow channel 8-1 and a right fluid internal flow channel 8-2, and a left fluid outlet 10 and a right fluid outlet 7 are respectively arranged on the left fluid internal flow channel 8-1 and the right fluid internal flow channel 8-2; when the left guide plate 11-1 is connected with the inner wall of the rear side of the cover plate 1 and is not connected with the inner wall of the front side of the cover plate 1, the right guide plate 11-2 is not connected with the inner wall of the rear side of the cover plate 1 and is connected with the inner wall of the front side of the cover plate 1, and when the left guide plate 11-1 is not connected with the inner wall of the rear side of the cover plate 1 and is connected with the inner wall of the front side of the cover plate 1, the right guide plate 11-2 is connected with the inner wall of the rear side of the cover plate 1 and is not connected with the inner; supercritical carbon dioxide fluid enters the upper liquid inlet cavity 2 through the fluid inlet 9, is sprayed onto the heated copper plate 6 through the array-type jet holes 4 and the jet pipes 5, then flows into the left fluid internal flow channel 8-1 and the right fluid internal flow channel 8-2 through the left guide plate 11-1 and the right guide plate 11-2 respectively and flows out through the left fluid outlet 10 and the right fluid outlet 7 to take away heat on the heated copper plate 6.
In a preferred embodiment of the present invention, the protrusions 12 are arranged in an array, distributed below the jet pipe 5, and staggered from the jet pipe 5. The array-type surface protrusions interfere with the flow of fluid, heat transfer can be enhanced, and meanwhile, heat can be more easily taken away by the generated turbulent flow.
As a preferred embodiment of the present invention, the jet pipe 5 has an inner diameter of 0.2mm to 4mm and an outer diameter of 1.5 to 3 times the inner diameter. The heat exchange effect can be effectively improved.
As a preferred embodiment of the present invention, the left fluid outlet 10 and the right fluid outlet 7 are respectively disposed at opposite sides of the left fluid internal flow passage 8-1 and the right fluid internal flow passage 8-2, and are respectively located at a side away from the left and right deflectors which is not connected to the inner walls of the front and rear sides of the cover plate. The heat exchange effect can be further improved.
According to the high-heat-flux impact cooling type supercritical carbon dioxide radiator provided by the embodiment of the invention, the fluid inlet is circular, so that the fluid inlet is conveniently connected with a pipeline; after entering through jet flow, the fluid is led to the internal flow channels on two sides through the guide plates, and the width of the guide plates of the internal flow channels is determined according to the material properties, so that heat transfer is avoided as much as possible.
As in fig. 1, 2 and 3. The heat is heated from the bottom surface and then transferred to the upper flow space through the heated copper plate 6, the supercritical carbon dioxide fluid enters the upper liquid inlet cavity 2 through the fluid inlet 9 and then enters through jet flow, and the supercritical carbon dioxide fluid of the jet flow is respectively brought to the left fluid internal flow channel 8-1 and the right fluid internal flow channel 8-2 through the left guide plate 11-1 and the right guide plate 11-2 and flows out from the fluid outlet beside the radiator. When the supercritical carbon dioxide fluid reaches a porous jet structure, the supercritical carbon dioxide fluid cooling liquid can be uniformly sprayed onto the surface of the heated copper plate 6, the array-type surface protrusions 12 interfere the flow of the fluid, the heat transfer can be enhanced, and meanwhile, the heat can be more easily taken away by the generated turbulent flow.
Claims (5)
1. A high heat flux impingement cooling type supercritical carbon dioxide radiator is characterized in that: the device comprises a heated copper plate (6) and a cover plate (1) covering the heated copper plate (6), wherein the cover plate (1) forms a box-shaped body with an upper liquid inlet cavity (2), a fluid inlet (9) into which supercritical carbon dioxide fluid flows is arranged in the middle of the top of the cover plate (1), a partition plate (3) is transversely arranged in the middle of the inner part of the upper liquid inlet cavity (2), the front end and the rear end of the partition plate (3) are connected with the front inner wall and the rear inner wall of the cover plate (1), an array type jet hole (4) is formed in the partition plate (3), and a jet pipe (5) with the same aperture is connected; a plurality of bulges (12) are arranged on the heated copper plate (6) at corresponding positions at the lower part of the partition plate (3), a left guide plate (11-1) and a right guide plate (11-2) are respectively arranged on the heated copper plate (6) which is positioned at the left side edge and the right side edge of the partition plate (3) and corresponds downwards, the outer side areas of the left guide plate (11-1) and the right guide plate (11-2) are respectively a left fluid internal flow channel (8-1) and a right fluid internal flow channel (8-2), and a left fluid outlet (10) and a right fluid outlet (7) are respectively arranged on the left fluid internal flow channel (8-1) and the right fluid internal flow channel (8-2); when the left guide plate (11-1) is connected with the inner wall of the rear side of the cover plate (1) and is not connected with the inner wall of the front side of the cover plate (1), the right guide plate (11-2) is not connected with the inner wall of the rear side of the cover plate (1) and is connected with the inner wall of the front side of the cover plate (1), and conversely, when the left guide plate (11-1) is not connected with the inner wall of the rear side of the cover plate (1) and is connected with the inner wall of the front side of the cover plate (1), the right guide plate (11-2) is connected with the inner wall of the rear side of the cover plate (1) and is not connected with the inner wall of the; supercritical carbon dioxide fluid enters the upper liquid inlet cavity (2) through the fluid inlet (9), then is sprayed onto the heated copper plate (6) through the array type jet holes (4) and the jet pipes (5), then respectively flows into the left fluid internal flow channel (8-1) and the right fluid internal flow channel (8-2) through the left guide plate (11-1) and the right guide plate (11-2), and flows out through the left fluid outlet (10) and the right fluid outlet (7) to take away heat on the heated copper plate (6).
2. A high heat flux impingement cooled supercritical carbon dioxide heat sink as recited in claim 1 wherein: the bulges (12) are arranged in an array, distributed below the jet pipe (5) and staggered with the jet pipe (5).
3. A high heat flux impingement cooled supercritical carbon dioxide heat sink as recited in claim 1 wherein: the inner diameter of the jet pipe (5) is 0.2mm-4mm, and the outer diameter is 1.5-3 times of the inner diameter.
4. A high heat flux impingement cooled supercritical carbon dioxide heat sink as recited in claim 1 wherein: the left fluid outlet (10) and the right fluid outlet (7) are respectively arranged on different sides of the left fluid internal flow passage (8-1) and the right fluid internal flow passage (8-2) and are respectively positioned on one side which is far away from the left and right guide plates and is not connected with the inner walls of the front side and the rear side of the cover plate.
5. A high heat flux impingement cooled supercritical carbon dioxide heat sink as recited in claim 1 wherein: the fluid inlet (9) is circular for convenient connection with a pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010151159.9A CN111356340A (en) | 2020-03-06 | 2020-03-06 | High heat flux impingement cooling type supercritical carbon dioxide radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010151159.9A CN111356340A (en) | 2020-03-06 | 2020-03-06 | High heat flux impingement cooling type supercritical carbon dioxide radiator |
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| Publication Number | Publication Date |
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| CN111356340A true CN111356340A (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010151159.9A Pending CN111356340A (en) | 2020-03-06 | 2020-03-06 | High heat flux impingement cooling type supercritical carbon dioxide radiator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114669553A (en) * | 2022-03-18 | 2022-06-28 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Gas bath device and method for designing gas bath device |
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| CN104764245A (en) * | 2015-04-02 | 2015-07-08 | 清华大学 | Super-critical fluid spray cooling system and application method thereof |
| CN206686504U (en) * | 2017-03-28 | 2017-11-28 | 深圳市迈安热控科技有限公司 | Heat pipe water-cooling heat radiating device |
| CN108966583A (en) * | 2017-05-17 | 2018-12-07 | 华为技术有限公司 | Radiator and communication equipment |
| CN109755199A (en) * | 2019-02-20 | 2019-05-14 | 合肥工业大学 | A kind of minim channel jet stream radiator |
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2020
- 2020-03-06 CN CN202010151159.9A patent/CN111356340A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764245A (en) * | 2015-04-02 | 2015-07-08 | 清华大学 | Super-critical fluid spray cooling system and application method thereof |
| CN206686504U (en) * | 2017-03-28 | 2017-11-28 | 深圳市迈安热控科技有限公司 | Heat pipe water-cooling heat radiating device |
| CN108966583A (en) * | 2017-05-17 | 2018-12-07 | 华为技术有限公司 | Radiator and communication equipment |
| CN109755199A (en) * | 2019-02-20 | 2019-05-14 | 合肥工业大学 | A kind of minim channel jet stream radiator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114669553A (en) * | 2022-03-18 | 2022-06-28 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Gas bath device and method for designing gas bath device |
| CN114669553B (en) * | 2022-03-18 | 2023-07-04 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Gas bath device and design method thereof |
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Application publication date: 20200630 |