CN114688889A - Space lattice type foam metal-based intensified condensing device of aerospace thermal control system - Google Patents
Space lattice type foam metal-based intensified condensing device of aerospace thermal control system Download PDFInfo
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- CN114688889A CN114688889A CN202210286683.6A CN202210286683A CN114688889A CN 114688889 A CN114688889 A CN 114688889A CN 202210286683 A CN202210286683 A CN 202210286683A CN 114688889 A CN114688889 A CN 114688889A
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- foam metal
- heat exchange
- exchange tube
- condensation heat
- thermal control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
- F28B1/02—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/04—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid
Abstract
The invention relates to a space lattice type foam metal-based intensified condensation device of a aerospace thermal control system, which comprises a shell, a condensation heat exchange tube and foam metal; the condensation heat exchange tube is internally provided with water for circulation, externally provided with a refrigerant for circulation, and externally filled with a through hole foam metal structure with high hole density; the foam metal is a filling structure of a space lattice type pyramid foam metal reinforced heat exchange framework. The invention belongs to the field of aerospace thermal control systems, and with the rapid increase of the heat flux density of high-performance and high-integration electronic devices in the field of aerospace systems, the invention adopts a water cooling mode to replace the traditional air cooling mode, and simultaneously adopts a mode of replacing finned tubes with foam metal with high pore density outside the tubes to exchange heat. Foam metal is when increasing heat transfer area, and the foam metal filling structure of heat transfer skeleton is reinforceed to the space dot matrix can reduce the influence of flow resistance greatly, is showing to improve the heat transfer effect, realizes high-efficient heat dissipation in limited space.
Description
Technical Field
The invention relates to the technical field of aerospace thermal control systems, in particular to a space lattice type foam metal-based aerospace thermal control system reinforced condensing device.
Background
The reliable and efficient thermal control system is one of the first prerequisites for guaranteeing the safe operation of the manned vehicle, and with the rapid development of the aerospace craft manufacturing technology, the thermal reliability indexes of airborne electronic and electrical equipment are more and more strict, so that higher requirements on the heat exchange capability and the temperature uniformity of an airborne heat exchanger are provided. However, the traditional electronic heat dissipation solutions such as natural convection, forced convection, heat pipe heat dissipation, etc. have not been able to meet the requirements. The traditional air-cooled condensing device has high condensing pressure, high power consumption and unsatisfactory heat exchange effect, and is difficult to meet the heat dissipation requirement of high heat flux density. The condensing temperature of the water cooling mode is low, so that the operation is economic and energy-saving; and most condensing units adopt finned tube optimization design at present.
Therefore, in an aerospace thermal control system, the research and development of novel enhanced heat exchange equipment with optimized structure to realize efficient cooling and heat dissipation are urgently needed. Among them, in recent years, the advantages of foam metal having many excellent characteristics in heat transfer enhancement have been receiving attention from more and more researchers. The holes in the through-hole foam metal are communicated with each other, so that the heat exchange area is increased, the through-hole foam metal becomes a good heat exchange medium and a reinforced heat exchange framework filling structure, and the heat exchange performance is further improved. However, the special structure of the through-hole foam metal enhances the heat exchange coefficient and increases the resistance, so how to cooperate with the flowing heat exchange characteristic and the resistance characteristic becomes a difficult point for research.
Research shows that the pressure drop resistance has a great relationship with the pore diameter, the pore density and the porosity of the foam metal, and under the condition of the same porosity, the heat exchange coefficient and the pressure drop resistance of a foam metal channel are increased along with the increase of the pore density. Therefore, the overall heat exchange performance can be improved by increasing the pore density, and although a certain pressure loss can be caused, the appropriate filling method can be adopted, so that the flow resistance is effectively reduced while the sintering performance is optimized, and the overall heat exchange performance is further improved.
Disclosure of Invention
The invention aims to provide a space lattice foam metal-based intensified condensing device of a aerospace thermal control system, which adopts a water cooling mode, fully utilizes foam metal with high pore density outside a pipe, adopts a filling structure of a space lattice pyramid foam metal intensified heat exchange framework, reduces flow resistance, obviously intensifies heat transfer, and realizes efficient heat dissipation in limited space.
In order to solve the technical problems, the invention provides the following technical scheme:
condensation device is reinforceed to aerospace thermal control system based on space dot matrix foam metal, including casing, condensation heat exchange tube, the spiral of condensation heat exchange tube is worn to establish in the casing, its characterized in that: still include through-hole foam metal, through-hole foam metal fills on the outer wall of the inside condensation heat exchange tube of casing, be provided with refrigerant entry and refrigerant export on the casing, it has the refrigerant to lead to in the casing, the both ends of condensation heat exchange tube are provided with water inlet and water outlet, and it has water to lead to in the condensation heat exchange tube.
Furthermore, the through-hole foam metal adopts a filling structure of a space lattice type body center orthogonal pyramid type framework, the porosity is 0.7-0.9, and the hole density is 20 PPI.
Furthermore, the through-hole foam metal is foam copper or foam nickel and is prepared by a melt solidification method, a solid state sintering method or an electrodeposition method.
Furthermore, the condensation heat exchange tube is a copper tube, an internal thread is arranged on the inner wall of the condensation heat exchange tube, and the shell is made of a galvanized plate.
Furthermore, the condensation heat exchange tube is fixedly installed in the shell through a bolt disc, and the through hole foam metal is fixedly connected with the outer surface of the condensation heat exchange tube through welding.
Further, the refrigerant inlet and the refrigerant outlet are respectively arranged at the upper end and the lower end of the shell, and the water inlet and the water outlet are respectively arranged at the lower end and the upper end of the condensation heat exchange tube.
Compared with the prior art, the invention has the beneficial effects that: 1. the device adopts the water-cooling mode to replace traditional air-cooling mode, and the condensation heat transfer outside of tubes carries out the heat transfer through the mode that adopts foam metal to replace the finned tube, when increasing heat transfer area, shock attenuation, noise abatement, the filling structure of heat transfer skeleton is reinforceed to the design of high pore density and space dot matrix pyramid type foam metal reduces the flow resistance, improves holistic heat transfer performance to compact structure can realize high-efficient heat dissipation in limited space. 2. The filled through-hole foam metal material has the advantages of high pore density, high specific strength, high specific rigidity, large specific surface area, corrosion resistance, high temperature resistance and good noise reduction performance. 3. The foam copper has good conductivity and ductility and low preparation cost; the foam nickel has good corrosion resistance. 4. The shell is a galvanized plate shell, and the shell is subjected to oil removal, rust removal, paint spraying and baking treatment, so that the shell is excellent in corrosion resistance. 5. The internal thread is arranged on the inner wall of the condensation heat exchange tube, so that the heat exchange area in the tube is increased, turbulent disturbance is enhanced, and condensation liquid drainage is accelerated. 6. The water supply in the condensation heat exchange tube circulates from bottom to top, the refrigerant outside the condensation heat exchange tube circulates from top to bottom, and the best heat transfer effect is achieved in a countercurrent heat exchange mode.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a bottom view of the present invention;
FIG. 3 is a schematic cross-sectional view of a via foam metal fill structure of the present invention;
fig. 4 is a partially enlarged structural view of the metal foam for via hole of the present invention.
Wherein: 1-shell, 2-condensation heat exchange tube, 3-through hole foam metal, 11-refrigerant inlet, 12-refrigerant outlet, 21-water inlet, and 22-water outlet.
Detailed Description
For the understanding of the present invention, the following detailed description will be given with reference to the accompanying drawings, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
Fig. 1-4 show a specific embodiment of a condensation device is reinforceed to a space lattice type foam metal based aerospace thermal control system, including casing 1, condensation heat exchange tube 2, through-hole foam metal 3, condensation heat exchange tube 2 is worn to establish in casing 1 by the spiral, through-hole foam metal 3 fills on the outer wall of the inside condensation heat exchange tube 2 of casing 1, the upper end and the lower extreme of casing 1 are provided with refrigerant inlet 11 and refrigerant outlet 12 respectively, it has the refrigerant to lead to in the casing 1, the lower extreme and the upper end of condensation heat exchange tube 2 are provided with water inlet 21 and water outlet 22, it has water to lead to in the condensation heat exchange tube 2.
Preferably, the through-hole foam metal 3 adopts a filling structure of a space lattice type body center orthogonal pyramid type framework, the porosity is 0.7-0.9, and the hole density is 20 PPI. The through-hole foam metal 3 is foam copper or foam nickel and is prepared by a melt solidification method, a solid-state sintering method or an electrodeposition method. The condensation heat exchange tube 2 is a copper tube, an internal thread is arranged on the inner wall of the condensation heat exchange tube, and the shell 1 is made of a galvanized plate. The condensation heat exchange tube 2 is fixedly arranged in the shell 1 through a bolt disc, and the through-hole foam metal 3 is fixedly connected with the outer surface of the condensation heat exchange tube 2 through welding.
The shell 1 made of the galvanized sheet has excellent corrosion resistance after being subjected to oil removal, rust removal, paint spraying and baking. The device fully utilizes the excellent characteristics of foam metal (high pore density, high specific strength, high specific rigidity, large specific surface area, corrosion resistance, high temperature resistance and noise reduction), the outer wall of the condensation heat exchange tube 2 is filled with through-hole foam metal with high pore density, the through-hole foam metal 3 is foam copper or foam nickel and the like, the porosity of the through-hole foam metal is 0.7-0.9, the pore density of the through-hole foam metal is 20PPI, and a filling structure of a space lattice type pyramid type foam metal reinforced heat exchange framework is adopted. The through-hole foam metal 3 can be prepared by a melt solidification method, a solid-state sintering method or an electrodeposition method, and the through-hole foam metal 3 and the outer surface of the condensation heat exchange tube 2 are fixed by welding.
As shown in figure 1, the condensing heat exchange tube 2 is internally provided with water which flows from bottom to top, externally provided with refrigerant which flows from top to bottom, and the refrigerant flows through the through hole foam metal 3. The device adopts the water cooling mode, and the condensing temperature is low, and the operation is economical and energy-saving. The outer surface of the condensation heat exchange tube 2 adopts the through hole foam metal 3 with high pore density, the foam metal can increase the heat exchange area, the shock absorption and the noise reduction, and meanwhile, the design with high pore density and the filling structure of the space lattice type pyramid foam metal reinforced heat exchange framework can greatly reduce the influence of flow resistance and contribute to the reinforced heat exchange. The best heat transfer effect is achieved in a countercurrent mode, and the inner wall of the condensation heat exchange tube 2 is provided with internal threads, so that heat exchange is enhanced. The device has compact design structure and can realize high-efficiency heat dissipation in limited space.
The above embodiments are merely illustrative of the technical concept and structural features of the present invention, and are intended to be implemented by those skilled in the art, but the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should fall within the scope of the present invention.
Claims (6)
1. Condensation device is reinforceed to aerospace thermal control system based on space dot matrix foam metal, including casing (1), condensation heat exchange tube (2), the spiral of condensation heat exchange tube (2) is worn to establish in casing (1), its characterized in that: still include through-hole foam metal (3), through-hole foam metal (3) are filled on the outer wall of casing (1) inside condensation heat exchange tube (2), be provided with refrigerant entry (11) and refrigerant export (12) on casing (1), and casing (1) expert has the refrigerant, the both ends of condensation heat exchange tube (2) are provided with water inlet (21) and water export (22), and the expert has water in condensation heat exchange tube (2).
2. The intensified condensing device of the space lattice type foam metal-based aerospace thermal control system according to claim 1, wherein: the through-hole foam metal (3) adopts a filling structure of a space lattice type body center orthogonal pyramid type framework, the porosity is 0.7-0.9, and the hole density is 20 PPI.
3. The intensified condensing device of the space lattice type foam metal-based aerospace thermal control system according to claim 2, wherein: the through-hole foam metal (3) is foam copper or foam nickel and is prepared by a melt solidification method, a solid-state sintering method or an electrodeposition method.
4. The intensified condensing apparatus of the aerospace thermal control system based on the space lattice type foam metal of claim 3, wherein: the condensation heat exchange tube (2) is a copper tube, an internal thread is arranged on the inner wall of the condensation heat exchange tube, and the shell (1) is made of a galvanized plate.
5. The intensified condensing apparatus of the aerospace thermal control system based on the space lattice type foam metal of claim 4, wherein: the condensation heat exchange tube (2) is fixedly installed in the shell (1) through a bolt disc, and the through hole foam metal (3) is fixedly connected with the outer surface of the condensation heat exchange tube (2) through welding.
6. The intensified condensing device of the space lattice type foam metal-based aerospace thermal control system according to claim 1, wherein: the refrigerant inlet (11) and the refrigerant outlet (12) are respectively arranged at the upper end and the lower end of the shell (1), and the water inlet (21) and the water outlet (22) are respectively arranged at the lower end and the upper end of the condensation heat exchange tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210286683.6A CN114688889A (en) | 2022-03-22 | 2022-03-22 | Space lattice type foam metal-based intensified condensing device of aerospace thermal control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210286683.6A CN114688889A (en) | 2022-03-22 | 2022-03-22 | Space lattice type foam metal-based intensified condensing device of aerospace thermal control system |
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| CN114688889A true CN114688889A (en) | 2022-07-01 |
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| CN202210286683.6A Pending CN114688889A (en) | 2022-03-22 | 2022-03-22 | Space lattice type foam metal-based intensified condensing device of aerospace thermal control system |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916550A (en) * | 2006-09-05 | 2007-02-21 | 西安交通大学 | Tube type heat exchanger |
| CN101149238A (en) * | 2007-11-09 | 2008-03-26 | 东南大学 | Plate type heat exchanger |
| CN201251297Y (en) * | 2008-05-27 | 2009-06-03 | 东南大学 | A solar flat plate collector containing high-porosity foam metal |
| CN101943525A (en) * | 2009-07-10 | 2011-01-12 | 中国科学院大连化学物理研究所 | Tube type heat exchanger and application of tube type heat exchanger in direct alcohol fuel cell system |
| CN104729338A (en) * | 2015-03-16 | 2015-06-24 | 上海交通大学 | Gradient metal foam heat dissipation device |
| CN106839795A (en) * | 2017-01-25 | 2017-06-13 | 东南大学 | A kind of efficient foam metal steam condenser processed through hydrophobicity |
| CN108302766A (en) * | 2018-02-05 | 2018-07-20 | 东南大学 | One kind dividing shape mesh metal foam reinforced transformation energy-storage system |
| CN108692592A (en) * | 2018-05-17 | 2018-10-23 | 上海电力学院 | Using the tube-plate type heat-exchanger of foam copper product |
| CN112595148A (en) * | 2020-12-08 | 2021-04-02 | 大连理工大学 | S-shaped tube bundle cross-flow type tube-shell heat exchanger based on foam metal |
-
2022
- 2022-03-22 CN CN202210286683.6A patent/CN114688889A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916550A (en) * | 2006-09-05 | 2007-02-21 | 西安交通大学 | Tube type heat exchanger |
| CN101149238A (en) * | 2007-11-09 | 2008-03-26 | 东南大学 | Plate type heat exchanger |
| CN201251297Y (en) * | 2008-05-27 | 2009-06-03 | 东南大学 | A solar flat plate collector containing high-porosity foam metal |
| CN101943525A (en) * | 2009-07-10 | 2011-01-12 | 中国科学院大连化学物理研究所 | Tube type heat exchanger and application of tube type heat exchanger in direct alcohol fuel cell system |
| CN104729338A (en) * | 2015-03-16 | 2015-06-24 | 上海交通大学 | Gradient metal foam heat dissipation device |
| CN106839795A (en) * | 2017-01-25 | 2017-06-13 | 东南大学 | A kind of efficient foam metal steam condenser processed through hydrophobicity |
| CN108302766A (en) * | 2018-02-05 | 2018-07-20 | 东南大学 | One kind dividing shape mesh metal foam reinforced transformation energy-storage system |
| CN108692592A (en) * | 2018-05-17 | 2018-10-23 | 上海电力学院 | Using the tube-plate type heat-exchanger of foam copper product |
| CN112595148A (en) * | 2020-12-08 | 2021-04-02 | 大连理工大学 | S-shaped tube bundle cross-flow type tube-shell heat exchanger based on foam metal |
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