CN114440679B - Annular evaporator loop heat pipe radiator for cold end of Stirling heat engine - Google Patents
Annular evaporator loop heat pipe radiator for cold end of Stirling heat engine Download PDFInfo
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- CN114440679B CN114440679B CN202210066060.8A CN202210066060A CN114440679B CN 114440679 B CN114440679 B CN 114440679B CN 202210066060 A CN202210066060 A CN 202210066060A CN 114440679 B CN114440679 B CN 114440679B
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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
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
- F28D15/043—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure forming loops, e.g. capillary pumped loops
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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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
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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
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
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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
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
- F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides an annular evaporator loop heat pipe radiator for a cold end of a Stirling heat engine, which comprises an annular evaporator, a steam cavity, a gas pipeline, a liquid storage tank, a heat dissipation panel and a sleeve type heat regenerator, wherein the annular evaporator is arranged in the annular evaporator; the invention overcomes the defects of poor heat dissipation effect of the traditional loop heat pipe, the design of the evaporator with the annular structure is reasonable and compact, and the defects of redundant bonding contact thermal resistance, complex structure, inconvenient installation and the like caused by using a plurality of groups of traditional loop heat pipes can be effectively avoided; the number of the inlets and the outlets of the gas-liquid pipelines can be flexibly arranged to increase and decrease the heat dissipation area, so that the heat dissipation requirements of the Stirling heat engine devices with different powers in low-temperature environments are met; compared with the traditional loop heat pipe, the design of the sleeve-type heat regenerator can reduce the supercooling degree of the reflux liquid and improve the working stability and reliability of the loop heat pipe, and the design of the invention can realize the heat dissipation of the cold ends of the Stirling heat engines with different powers under the low-temperature condition of deep space or marine environment.
Description
Technical Field
The invention relates to a loop heat pipe radiator, belongs to the technical field of thermal control heat dissipation, and particularly relates to an annular evaporator loop heat pipe radiator for a cold end of a Stirling heat engine.
Background
With the increasing heavy exploration task in deep space and open sea, the energy demand is continuously increased, and the nuclear energy is regarded as an energy source capable of being efficiently and continuously utilized due to high energy density and long service life. The Stirling heat engine has the characteristic of high conversion efficiency, and along with the continuous maturity of advanced Stirling thermoelectric conversion technology in recent years, the mode of combining the nuclear reactor and the Stirling heat engine becomes a hotspot of nuclear reactor power supply design. The cold end temperature of the Stirling heat engine has great influence on the thermoelectric conversion efficiency, so that the heat dissipation technology of the small nuclear power supply is particularly important.
Compared with a single-phase heat transmission technology, the two-phase thermal control technology has the advantages that the pipeline radius is smaller, working media are fewer, power consumption is lower, and especially when a large-power device heat dissipation system needs a longer fluid pipeline, the advantages of the two-phase thermal control technology are more obvious. The loop heat pipe is used as a two-phase passive heat control device, high-efficiency heat transmission is carried out by depending on phase change of a working medium, and meanwhile, capillary force is generated by depending on a capillary core structure, so that long-distance circulating flow can be realized without depending on a pump to drive the working medium, and the loop heat pipe is widely applied to the field of high heat flux density heat dissipation.
When the cold end of a high-power Stirling heat engine device is applied in a heat dissipation mode, the traditional loop heat pipe has the following problems:
1. most of traditional loop heat pipe evaporators are cylindrical or flat, a transition surface is required to be tightly attached to a heat source surface when the traditional loop heat pipe evaporators face cold end heat dissipation application of Stirling heat engine devices with different powers, more system space is required to be occupied when the traditional loop heat pipe evaporators are coupled with heat dissipation devices, and the traditional loop heat pipe evaporators have larger thermal contact resistance, complex structures and inconvenient installation;
2. the application field of the cold end high heat flow density heat dissipation of the Stirling heat engine is different from the heat dissipation power, and an external heat dissipation panel needs to be adjusted according to different application conditions;
3. in addition, the supercooling degree of the reflux liquid is an important consideration factor for determining the working stability and reliability of the heat pipe, the poor control of the supercooling degree of the reflux liquid can cause the working temperature fluctuation of the loop heat pipe to increase the failure risk, and on the other hand, the cold end heat density fluctuation of the Stirling heat engine caused by the temperature fluctuation of the loop heat pipe can cause the vibration noise of the Stirling heat engine to increase, so that the service life is shortened.
Disclosure of Invention
The invention aims to provide the loop evaporator loop heat pipe radiator for the cold end of the Stirling heat engine in order to overcome the defect of poor heat dissipation effect of the traditional loop heat pipe, the design of the loop evaporator of the invention is reasonable and compact, and the defects of redundant bonding contact thermal resistance, complex structure, inconvenient installation and the like caused by using a plurality of groups of traditional loop heat pipes can be effectively avoided; the number of the inlets and the outlets of the gas-liquid pipelines can be flexibly arranged to increase and decrease the heat dissipation area, so that the heat dissipation requirements of the Stirling heat engine devices with different powers in low-temperature environments are met; compared with the traditional loop heat pipe, the design of the sleeve-type heat regenerator can reduce the supercooling degree of the reflux liquid and improve the working stability and reliability of the loop heat pipe, and the design of the invention can realize the heat dissipation of the cold ends of the Stirling heat engines with different powers under the low-temperature condition of deep space or marine environment.
In order to solve the problems in the prior art, the invention provides an annular evaporator loop heat pipe radiator for a cold end of a Stirling heat engine, which can realize heat radiation with different powers under the low-temperature condition of deep space or marine environment.
In order to achieve the purpose, the invention adopts the following technical scheme:
an annular evaporator loop heat pipe radiator for a cold end of a Stirling heat engine is characterized by comprising an annular evaporator, a steam cavity, a gas pipeline, a liquid storage tank, a heat dissipation panel and a sleeve type heat regenerator;
the annular evaporator is of a circular cylindrical structure, wherein the wall of the evaporator shell, the tooth-shaped structure, the steam channel, the composite double-layer capillary core and the liquid channel are sequentially arranged from the inner diameter to the outer diameter. The inner side of the shell wall of the evaporator is tightly attached to a cold end annular surface of the Stirling heat engine and used for leading out cold end heat of the Stirling heat engine and transmitting the cold end heat to working media in the evaporator to generate phase change; the steam channel is a thin groove channel formed by a tooth-shaped structure on the outer side of the shell wall of the evaporator and the inner surface of the composite double-layer capillary core; the outer side surface of the composite double-layer capillary core is connected with the liquid channel, wherein the liquid absorbing core material with high porosity is contacted with the liquid channel; one end of the liquid channel is communicated with the liquid storage tank.
The steam chamber is the closed ring channel structure of even thickness, and the upper portion opening links to each other with the gas pipeline, and the lower part communicates with the steam channel.
One part of the gas pipeline is arranged in the interlayer of the radiating panel, one end of the gas pipeline is connected with the steam cavity, and the other end of the gas pipeline is connected with the liquid pipeline;
one part of the liquid pipeline is arranged in the interlayer of the radiating panel, one end of the liquid pipeline is connected with the gas pipeline, and the other end of the liquid pipeline is connected with the liquid storage tank;
the sleeve-type heat regenerator is arranged at the outlet of the steam cavity and comprises an outer pipe, an inner pipe and a convection heat exchange annular space; the outer pipe is a condensate liquid reflux side, the inner pipe is a steam inlet and outlet pipe side, and low-temperature condensate liquid carries out convection heat exchange with outlet steam through a convection heat exchange annular space and is used for reducing the supercooling degree of reflux liquid so as to prevent the reflux liquid from freezing.
Further, the tooth-shaped structure can be a triangular structure, a rectangular structure, a trapezoidal structure, or the like, which can form a closed steam channel with the inner surface of the composite double-layer capillary wick.
Furthermore, the number of the openings of the gas pipeline connected to the upper part of the steam cavity is consistent with the number of the openings of the liquid pipeline connected to the lower part of the liquid storage tank, and each pair of openings respectively corresponds to one heat dissipation panel unit.
Furthermore, the arrangement mode of the gas pipeline opening at the upper part of the steam cavity and the liquid pipeline opening at the lower part of the liquid storage tank adopts pairwise crisscross symmetrical arrangement so as to balance the flow of each gas-liquid pipe opening and realize uniform heat dissipation.
Further, the radiating panel is of a sandwich structure, the upper layer and the lower layer are both radiating plate layers, and the middle interlayer is a honeycomb core, heat-conducting silicone grease, a gas pipeline and a liquid pipeline.
Furthermore, the number of the radiating panel units is determined according to the radiating power, the working temperature of the loop heat pipe and the ambient temperature.
Further, the heat transfer working medium is water or ammonia.
By the technical scheme, the invention discloses an annular evaporator loop heat pipe radiator for the cold end of a Stirling heat engine, which has the following beneficial effects:
1. the evaporator with the annular structure is reasonable and compact in design, can effectively avoid the defect that a plurality of groups of traditional loop heat pipes are redundantly adhered with the heat dissipation belt to contact thermal resistance, and does not need to occupy more system space when being coupled with a heat dissipation device;
2. the invention can adjust the external radiating panel according to different application conditions, flexibly designs a plurality of groups of gas-liquid pipelines for changing the number of the radiating panels and can realize radiating requirements of different powers;
3. the design of the annular steam cavity can lead the steam at the outlet of the steam channel to be evenly distributed, lead the steam flow entering each independent unit radiating panel to be consistent, lead the physical parameters such as the flow of the condensed reflux liquid to be basically the same, and improve the working stability and reliability of the loop heat pipe radiator;
4. the invention preheats the reflux liquid by using the sleeve-type heat regenerator, can reduce the supercooling degree of the reflux liquid compared with the traditional loop heat pipe, and further improves the working stability and reliability of the loop heat pipe radiator.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of a loop heat pipe radiator of a loop evaporator of the present invention.
FIG. 2 is a sectional view of a loop heat pipe radiator loop evaporator of the present invention.
Figure 3 is a cross-sectional view of the radiator panel of the present invention.
Fig. 4 is a schematic diagram of the regenerator structure according to the present invention.
Wherein, 1, a ring-shaped evaporator; 2. a heat dissipation panel; 3. a casing pipe type heat regenerator; 4. a steam chamber; 5. a gas line; 6. a liquid line; 7. a liquid storage tank; 101. an evaporator shell wall; 102. a tooth-shaped structure; 103. a steam channel; 104. compounding a double-layer capillary core; 105. a liquid channel; 201. a heat dissipation plate layer; 202. heat-conducting silicone grease; 203. a honeycomb core; 301. an outer tube; 302. a convective heat transfer annulus; 303. an inner tube.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
Referring to the attached drawings, the embodiment of the invention discloses a loop heat pipe radiator of an annular evaporator, which comprises an annular evaporator 1, a heat dissipation panel 2, a sleeve-type heat regenerator 3, a steam cavity 4, a gas pipeline 5, a liquid pipeline 6 and a liquid storage tank 7;
the annular evaporator 1 is a circular cylindrical structure, wherein an evaporator shell wall 101, a tooth-shaped structure 102, a steam channel 103, a composite double-layer capillary core 104 and a liquid channel 105 are sequentially arranged in the direction from the inner diameter to the outer diameter. The inner side of the shell wall 101 of the evaporator is tightly attached to a cold end annular surface of the Stirling heat engine and used for leading out cold end heat of the Stirling heat engine and transmitting the cold end heat to working media in the evaporator to generate phase change; the steam channel 103 is a fine channel formed by the tooth-shaped structure 102 on the outer side of the evaporator shell wall 101 and the inner surface of the composite double-layer capillary wick 104; the outer side surface of the composite double-layer capillary core 104 is connected with the liquid channel 105, and a liquid absorption core material with high porosity is in contact with the liquid channel 105; the liquid channel 105 communicates at one end with the reservoir 7.
The steam cavity 4 is a closed circular channel structure with uniform thickness, the upper opening of the steam cavity is connected with the gas pipeline 5, and the lower part of the steam cavity is communicated with the steam channel 103.
One part of the gas pipeline 5 is arranged in the interlayer of the radiating panel 2, one end of the gas pipeline is connected with the steam cavity 4, and the other end of the gas pipeline is connected with the liquid pipeline 6;
one part of the liquid pipeline 6 is arranged in the interlayer of the heat dissipation panel 2, one end of the liquid pipeline is connected with the gas pipeline 2, and the other end of the liquid pipeline is connected with the liquid storage tank 7;
the sleeve-type heat regenerator 3 is arranged at the outlet of the steam cavity 4 and comprises an outer pipe 301, an inner pipe 303 and a convection heat exchange annular space 302; the outer pipe 301 is a condensate reflux side, the inner pipe 303 is a steam inlet and outlet pipe side, and low-temperature condensate carries out convection heat exchange with outlet steam through the convection heat exchange annular space 302 and is used for reducing the supercooling degree of the reflux to prevent the reflux from freezing.
In this embodiment, the tooth-shaped structure 102 can be a triangular structure, a rectangular structure, a trapezoidal structure, or the like, which can form a closed steam channel 103 with the inner surface of the composite double-layer capillary wick 104.
In this embodiment, the number of openings of the gas line 5 connected to the upper portion of the vapor chamber 4 is the same as the number of openings of the liquid line 6 connected to the lower portion of the liquid storage tank 7, and each pair of openings corresponds to one heat dissipation panel 2 unit.
In this embodiment, the arrangement of the openings of the gas line 5 on the upper part of the steam chamber 4 and the openings of the liquid line 6 on the lower part of the liquid storage tank 7 adopts two-by-two crisscross symmetrical arrangement so that the flow of the gas line openings is balanced, and uniform heat dissipation is realized.
In this embodiment, the heat dissipation panel 2 is a sandwich structure, the upper and lower layers are heat dissipation plate layers 201, and the middle layer is a honeycomb core 203, a thermal grease 202, a gas line 5 and a liquid line 6. If the space radiation heat dissipation application is oriented, the heat dissipation plate layer 201 is made of an aluminum alloy skin, and the outer surface of the heat dissipation plate layer is coated with a high-emissivity thermal control coating; if the ocean convection cooling application is oriented, the heat dissipation plate layer 201 is made of a stainless steel skin, and a rough anti-rust coating is coated on the outer surface of the heat dissipation plate layer; the inner surface of the radiating plate layer 201 is connected with the honeycomb core 203 and is adhered to a gas-liquid pipeline through the heat-conducting silicone grease 202.
In this embodiment, the number of the heat dissipation panels 2 is determined according to the heat dissipation power, the working temperature of the loop heat pipe, and the ambient temperature.
In this embodiment, the heat transfer working medium is water or ammonia; the gas line 5 and the liquid line 6 are smooth stainless steel thin tubes to reduce the flow resistance of the tube wall and improve the thermal conductivity.
In this embodiment, the composite dual-layer wick 104 is formed by combining an outer layer wire mesh wick and an inner layer sintered metal powder wick. The outer-layer wire mesh capillary core is formed by rolling a metal fiber mesh, the capillary pore diameter is large, the permeability is high, the liquid heat transfer working medium in the outer-layer liquid channel can quickly permeate into the liquid absorption core, the inner-layer sintered metal powder capillary core is formed by pressing and sintering metal powder, so that the porosity is small, the suction effect is strong, and the liquid working medium is sucked to a meniscus position in contact with the gear structure 102 by larger capillary force to be evaporated to generate phase change.
The working principle of the embodiment is as follows:
the annular evaporator shell wall 101 is attached to the heating surface of the device, the heat emitted by the device acts on the heating surface of the evaporator shell wall 101, and the heat is conducted to the gear structure 102 through the evaporator shell wall 101. The liquid working medium at the meniscus of the gear structure 102 and the composite double-layer capillary core 103 is heated and evaporated, and the generated steam is collected to the steam cavity 4 through the steam channel 102. The steam is buffered in the steam chamber 4 and then flows through the heat dissipation panel 2 through the gas line 5, and then the steam releases latent heat of vaporization to the heat dissipation panel 2 for condensation, and the heat dissipation panel 2 discharges heat to the environment through radiation or convection. Due to the capillary suction effect of the composite double-layer capillary core 104 in the annular evaporator 1, the condensate is sucked and reflows through the liquid pipeline, the condensate flows through the double-pipe type heat regenerator 3 to the liquid storage tank 7 in the reflowing process, the condensate in the liquid storage tank 7 is continuously supplemented and flows to the liquid channel 105 of the annular evaporator, and therefore the closed circulation of evaporation-condensation phase change heat transfer is realized.
The technical solutions of the present invention are fully described above, it should be noted that the specific embodiments of the present invention are not limited by the above description, and all technical solutions formed by equivalent or equivalent changes in structure, method, or function according to the spirit of the present invention by those skilled in the art are within the scope of the present invention.
Claims (7)
1. An annular evaporator loop heat pipe radiator for a cold end of a Stirling heat engine is characterized by comprising an annular evaporator, a steam cavity, a gas pipeline, a liquid storage tank, a heat dissipation panel and a sleeve type heat regenerator;
the annular evaporator is of a circular cylindrical structure, wherein the wall of the evaporator shell, a tooth-shaped structure, a steam channel, a composite double-layer capillary core and a liquid channel are sequentially arranged from the inner diameter to the outer diameter, and the inner side of the wall of the evaporator shell is tightly attached to the annular surface of the cold end of the Stirling heat engine and used for leading out the heat of the cold end of the Stirling heat engine and transmitting the heat to a working medium in the evaporator to generate phase change; the steam channel is a thin groove channel formed by a tooth-shaped structure on the outer side of the shell wall of the evaporator and the inner surface of the composite double-layer capillary core; the outer side surface of the composite double-layer capillary core is connected with the liquid channel, wherein the liquid absorption core material with higher porosity is in contact with the liquid channel; one end of the liquid channel is communicated with the liquid storage tank; the steam cavity is of a closed circular channel structure with uniform thickness, an opening at the upper part is connected with the gas pipeline, and the lower part is communicated with the steam channel; one part of the gas pipeline is arranged in the interlayer of the radiating panel, one end of the gas pipeline is connected with the steam cavity, and the other end of the gas pipeline is connected with the liquid pipeline; one part of the liquid pipeline is arranged in the interlayer of the radiating panel, one end of the liquid pipeline is connected with the gas pipeline, and the other end of the liquid pipeline is connected with the liquid storage tank; the sleeve-type heat regenerator is arranged at the outlet of the steam cavity and comprises an outer pipe, an inner pipe and a convection heat exchange annular space; the outer pipe is a condensate reflux side, the inner pipe is a steam inlet and outlet pipe side, and low-temperature condensate carries out convective heat exchange with outlet steam through a convective heat exchange annular space and is used for reducing the supercooling degree of the reflux to prevent the reflux from freezing.
2. An annular evaporator loop heat pipe radiator for a cold end of a stirling engine as claimed in claim 1 wherein the castellated structure is triangular, rectangular or trapezoidal; and a structure capable of forming a closed steam channel with the inner surface of the composite double-layer capillary core.
3. An annular evaporator loop heat pipe radiator for a cold end of a stirling engine, as claimed in claim 1, wherein the number of openings of the vapor chamber upper connecting gas line is the same as the number of openings of the liquid storage tank lower connecting liquid line, each pair of openings corresponding to a respective one of the heat sink panel units.
4. An annular evaporator loop heat pipe radiator for a cold end of a stirling engine as claimed in claim 1 wherein the arrangement of the gas line opening at the upper part of the vapor chamber and the liquid line opening at the lower part of the liquid storage tank is in a criss-cross symmetrical arrangement two by two so that the flow of each gas-liquid pipe orifice is balanced and uniform heat dissipation is achieved.
5. An annular evaporator loop heat pipe radiator for a cold end of a stirling engine as claimed in claim 1 wherein the radiator panel is of a sandwich type construction, the upper and lower layers being layers of radiator plates, the intermediate layer being a honeycomb core, thermally conductive silicone grease, a gas line and a liquid line.
6. A loop evaporator heat pipe radiator for a cold end of a stirling engine as claimed in claim 1 wherein the number of heat sink panel units is determined in accordance with the heat dissipation power, the operating temperature of the loop heat pipes and the ambient temperature.
7. A loop heater loop heat pipe radiator for a cold end of a stirling engine as claimed in claim 1 wherein the working fluid is water or ammonia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210066060.8A CN114440679B (en) | 2022-01-20 | 2022-01-20 | Annular evaporator loop heat pipe radiator for cold end of Stirling heat engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210066060.8A CN114440679B (en) | 2022-01-20 | 2022-01-20 | Annular evaporator loop heat pipe radiator for cold end of Stirling heat engine |
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| Publication Number | Publication Date |
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| CN114440679A CN114440679A (en) | 2022-05-06 |
| CN114440679B true CN114440679B (en) | 2022-12-13 |
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| CN202210066060.8A Active CN114440679B (en) | 2022-01-20 | 2022-01-20 | Annular evaporator loop heat pipe radiator for cold end of Stirling heat engine |
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| CN208398694U (en) * | 2018-01-30 | 2019-01-18 | 中国科学院理化技术研究所 | low-temperature loop heat pipe |
| CN109458864A (en) * | 2018-10-26 | 2019-03-12 | 西安交通大学 | A kind of capillary pump loop heat pipe having external space ability to work and working method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017037921A1 (en) * | 2015-09-03 | 2017-03-09 | 富士通株式会社 | Loop heat pipe, manufacturing method for same, and electronic device |
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2022
- 2022-01-20 CN CN202210066060.8A patent/CN114440679B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782189A (en) * | 2017-09-27 | 2018-03-09 | 北京空间飞行器总体设计部 | Resistance to malleation, high-power flat evaporator and its processing method and the flat board loop circuit heat pipe based on the evaporator |
| CN108286911A (en) * | 2018-01-30 | 2018-07-17 | 中国科学院理化技术研究所 | Low-temperature loop heat pipe |
| CN207881541U (en) * | 2018-01-30 | 2018-09-18 | 中国科学院理化技术研究所 | Loop heat pipe with auxiliary infusion pipeline |
| CN208398694U (en) * | 2018-01-30 | 2019-01-18 | 中国科学院理化技术研究所 | low-temperature loop heat pipe |
| CN108458614A (en) * | 2018-04-13 | 2018-08-28 | 中国科学院理化技术研究所 | Loop heat pipe |
| CN208075642U (en) * | 2018-04-13 | 2018-11-09 | 中国科学院理化技术研究所 | Compact antigravity return circuit heat pipe |
| CN109458864A (en) * | 2018-10-26 | 2019-03-12 | 西安交通大学 | A kind of capillary pump loop heat pipe having external space ability to work and working method |
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| Publication number | Publication date |
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| CN114440679A (en) | 2022-05-06 |
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