CN110068166A - A kind of gas-liquid and fluid-solid coupling phase-change accumulation energy radiator - Google Patents
A kind of gas-liquid and fluid-solid coupling phase-change accumulation energy radiator Download PDFInfo
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- CN110068166A CN110068166A CN201910231574.2A CN201910231574A CN110068166A CN 110068166 A CN110068166 A CN 110068166A CN 201910231574 A CN201910231574 A CN 201910231574A CN 110068166 A CN110068166 A CN 110068166A
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- Prior art keywords
- phase
- accumulation energy
- change accumulation
- change
- heat sink
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Classifications
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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
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
-
- 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
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
- F25B39/028—Evaporators having distributing means
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
-
- 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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
-
- 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
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/026—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat with different heat storage materials not coming into direct contact
-
- 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
- F25B2600/00—Control issues
- F25B2600/05—Refrigerant levels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a kind of gas-liquids and fluid-solid coupling phase-change accumulation energy radiator, include the heat sink module of phase-change accumulation energy and sweat cooling loop module；Module that phase-change accumulation energy is heat sink includes the heat sink unit of N number of phase-change accumulation energy；Sweat cooling loop module includes heat exchanger, first to fourth valve, compressor, condenser, throttle valve, current divider and the one-to-one evaporation element of the heat sink unit of several and phase-change accumulation energy.Phase-change accumulation energy is heat sink, and unit is directly contacted with heat source, among the phase-change material of its embedding corresponding heat sink unit of phase-change accumulation energy of evaporation element.Solid phase change material absorbs heat source net quantity of heat in a very short period of time and is fused into liquid, and then liquid refrigerant absorbs the heat in liquid state phase change material by flow boiling within the intermittent time and is allowed to be frozen into solid-state again in refrigeration cycle evaporator.The present invention can effectively remove the instantaneous super large hot-fluid of airborne high power applications, have many advantages, such as that structure is simple, safe and reliable, radiating efficiency is high.
Description
Technical field
The present invention relates to aircraft environment control technology fields, are related to flow boiling, fusing/solidification and enhanced heat exchange etc. and ask
Topic more particularly to a kind of gas-liquid and fluid-solid coupling phase-change accumulation energy radiator.
Background technique
Continuous with airborne high power applications heat flow density is risen, and needs to use efficient heat dissipation technology to ensure its stabilization
Operation.Although traditional air-cooled and liquid cooling has been widely used as active heat removal technology, but still it is unable to satisfy pulsation hot-fluid item
The radiating requirements of the high power applications of transient heat flow super large under part.
Phase change energy storage technology utilizes the fusing reactive absorption of phase-change material (PCM) as a kind of new type of passive heat dissipation technology
A large amount of latent heat temporarily store heat, play the role of energy snubber, then be dispersed into environment by other radiating modes
In.The technology has many advantages, such as that energy storage density is high, temperature is constant and easy to control.Evaporation circulating cooling technology utilizes refrigerating fluid
Flow boiling absorbs a large amount of latent heat, and the coefficient of performance (COP) is then much higher than single-phase heat dissipation technologys such as air-cooled and liquid coolings.
Above two heat dissipation technology is coupled, first with the pulsation hot-fluid of phase change energy storage technology storage high power applications, then is passed through
Evaporation circulating cooling technology scatters away heat, can effectively solve the heat dissipation problem of airborne high power applications.Presently relevant report is also very
It is few, thus it is necessary to be studied this.
Summary of the invention
The technical problem to be solved by the present invention is to be difficult to effectively go for the current airborne instantaneous super large hot-fluid of high power applications
Except the problem of, propose a kind of gas-liquid and fluid-solid coupling phase-change accumulation energy radiator.
The present invention uses following technical scheme to solve above-mentioned technical problem:
A kind of gas-liquid and fluid-solid coupling phase-change accumulation energy radiator include the heat sink module of phase-change accumulation energy and sweat cooling cyclic module
Block；
The heat sink module of phase-change accumulation energy includes the heat sink unit of N number of phase-change accumulation energy, and the N is the integer more than or equal to 1；
The heat sink unit of phase-change accumulation energy includes shell, phase-change material, pressure sensor, the first thermal resistance and the second thermal resistance；
The shell is that hollow closed cylinder is made of Heat Conduction Material, and lower end surface and the heat source to radiate directly connect
Touching, and the outer wall of lower end surface is equipped with the thermocouple for measuring heat source surface temperature；
The phase-change material is arranged in the intracorporal cavity of shell that there are air layers between the upper wall surface of the cavity；
The pressure sensor, the first thermal resistance, the second thermal resistance be separately positioned on the air layer, phase-change material top,
The lower part of phase-change material is respectively used to measure the pressure of air layer, the temperature on phase-change material top, the temperature of phase-change material lower part
Degree；
The sweat cooling loop module includes heat exchanger, first to fourth valve, compressor, condenser, throttle valve, current divider
With the one-to-one evaporation element of several and described heat sink unit of phase-change accumulation energy；
The current divider includes that an entrance and several and the evaporation element export correspondingly；
The evaporation element includes flowmeter and evaporator；
The evaporator is arranged in the heat sink unit phase-change material of the corresponding phase-change accumulation energy of evaporation element, one end and the flowmeter
One end pipeline be connected, the other end is connected with one end pipeline of second valve；The other end of the flowmeter and evaporation are single
The corresponding current divider outlet conduit of member is connected；
The other end of second valve is connected with one end pipeline of the entrance of compressor, the 4th valve respectively；
The outlet of the compressor, condenser, throttle valve entrance successively pipeline is connected；
The other end of 4th valve, heat exchanger, third valve successively pipeline is connected for one end；
The outlet of the throttle valve is connected with one end pipeline of the other end of the third valve, the first valve respectively；Described
The other end of one valve is connected with the inlet duct of the current divider.
As a kind of gas-liquid of the present invention and the further prioritization scheme of fluid-solid coupling phase-change accumulation energy radiator, the phase transformation
Energy storage heat sink member also includes infrared thermal imager, and the infrared thermal imager is arranged outside shell, for combining the first thermoelectricity
Even, the second thermocouple judges phase-change material fusing in shell or solid-liquid phase interface when solidifying.
As a kind of gas-liquid of the present invention and the further prioritization scheme of fluid-solid coupling phase-change accumulation energy radiator, the shell
It is welded by aluminium.
As a kind of gas-liquid of the present invention and the further prioritization scheme of fluid-solid coupling phase-change accumulation energy radiator, the evaporation
Device uses a helical fin copper pipe or several helical fin copper pipes being sequentially connected by pipeline.
As a kind of gas-liquid of the present invention and the further prioritization scheme of fluid-solid coupling phase-change accumulation energy radiator, N=2.
As a kind of gas-liquid of the present invention and the further prioritization scheme of fluid-solid coupling phase-change accumulation energy radiator, the phase transformation
Equilibrium is mixed with high-melting-point high thermal conductivity coefficient substance in material, to form the higher composite phase-change material of the coefficient of heat transfer, the height
Fusing point high thermal conductivity coefficient substance is using any one in metal nanoparticle, foam metal, carbon fiber, carbon nanotube, graphene
Kind.
The invention adopts the above technical scheme compared with prior art, has following technical effect that
The present invention can quickly absorb the heat of high power applications in a very short period of time and restore initial shape within the intermittent time
State can effectively remove the instantaneous super large hot-fluid of airborne high power applications, have simple, safe and reliable, radiating efficiency height of structure etc. excellent
Point.
Detailed description of the invention
Fig. 1 is a kind of gas-liquid and fluid-solid coupling phase-change accumulation energy radiator schematic diagram；
Fig. 2 is temperature change schematic diagram when phase-change material is melted/solidified；
Fig. 3 is evaporator spiral fin coil partial enlargement diagram.
In figure, 1- shell, 2- chamber, 3- phase-change material, 4- air layer, 5- pressure sensor, the first thermal resistance of 6-, 7-
Two thermal resistances, 8- thermocouple, 9- heat source, 10- infrared thermal imager, 11- compressor, 12- condenser, 13- throttle valve, 14- points
Flow device, 15- flowmeter, 16- evaporator, 17- heat exchanger, the first valve of 18-, the second valve of 19-, 20- third valve, 21- the
Four valves.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing:
The present invention can be embodied in many different forms, and should not be assumed that be limited to the embodiments described herein.On the contrary, providing
These embodiments are thoroughly and complete to make the disclosure, and will give full expression to the scope of the present invention to those skilled in the art.
In the accompanying drawings, for the sake of clarity it is exaggerated component.
The invention discloses a kind of gas-liquid and fluid-solid coupling phase-change accumulation energy radiator, comprising the heat sink module of phase-change accumulation energy and
Sweat cooling loop module；
The heat sink module of phase-change accumulation energy includes the heat sink unit of N number of phase-change accumulation energy, and the N is the integer more than or equal to 1；
The heat sink unit of phase-change accumulation energy includes shell, phase-change material, pressure sensor, the first thermocouple and the second thermocouple；
The shell is that hollow closed cylinder is made of Heat Conduction Material, and lower end surface and the heat source to radiate directly connect
Touching, and the outer wall of lower end surface is equipped with the thermal resistance for measuring heat source surface temperature；
The phase-change material is arranged in the intracorporal cavity of shell that there are air layers between the upper wall surface of the cavity；
The pressure sensor, the first thermocouple, the second thermocouple be separately positioned on the air layer, phase-change material top,
The lower part of phase-change material is respectively used to measure the pressure of air layer, the temperature on phase-change material top, the temperature of phase-change material lower part
Degree；
The sweat cooling loop module includes heat exchanger, first to fourth valve, compressor, condenser, throttle valve, current divider
With the one-to-one evaporation element of several and described heat sink unit of phase-change accumulation energy；
The current divider includes that an entrance and several and the evaporation element export correspondingly；
The evaporation element includes flowmeter and evaporator；The evaporator setting is heat sink in the corresponding phase-change accumulation energy of evaporation element
In unit phase-change material, one end is connected with one end pipeline of the flowmeter, one end pipeline of the other end and second valve
It is connected；The other end of flowmeter current divider outlet conduit corresponding with evaporation element is connected；
The other end of second valve is connected with one end pipeline of the entrance of compressor, the 4th valve respectively；
The outlet of the compressor, condenser, throttle valve entrance successively pipeline is connected；
The other end of 4th valve, heat exchanger, third valve successively pipeline is connected for one end；
The outlet of the throttle valve is connected with one end pipeline of the other end of the third valve, the first valve respectively；Described
The other end of one valve is connected with the inlet duct of the current divider.
The heat sink unit of phase-change accumulation energy also includes infrared thermal imager, and the infrared thermal imager is arranged outside shell,
For combining the first thermocouple, the second thermocouple to judge phase-change material fusing in shell or solid-liquid phase interface when solidifying.
The shell is welded by aluminium, and the evaporator is using a helical fin copper pipe or several passes through pipeline
The helical fin copper pipe being sequentially connected.
Schematic diagram when being N=2 in Fig. 1, is illustrated below with N=2:
Solid phase change material absorbs heat source net quantity of heat in a very short period of time and is fused into liquid, is then embedded in phase-change material
Liquid refrigerant in sweat cooling circulating evaporator is absorbed in liquid state phase change material within the intermittent time by flow boiling
Heat simultaneously is allowed to be frozen into solid-state again.
Unfilled phase-change material in the chamber of two heat sink unit housings of phase-change accumulation energy and there are appropriate air layers；Evaporation
Device uses helical fin copper pipe.Phase-change material temperature is monitored by the first thermal resistance, the second thermal resistance in chamber, fusing/solidification
When solid-liquid phase interface by the first thermal resistance, the second thermal resistance combination infrared thermal imager determine；Cavity indoor pressure is then passed by pressure
Sensor measures, pressure do not answer it is excessively high, in order to avoid influence structural reliability.In addition, heat source surface temperature is measured by thermocouple point contact,
Judge heat dissipation effect.
Sweat cooling circulation mainly includes compressor, condenser, throttle valve, evaporator, heat exchanger, wherein evaporator access
It is coupled with phase-change material, heat exchanger access also may make up independent cooling circulation.Evaporator access is connect with heat exchanger path in parallel,
Evaporator access is only connected to when normal work, and performance detection is only connected to heat exchanger access with when adjusting.Low-pressure steam passes through pressure
Contracting machine becomes high steam, then becomes highly pressurised liquid through condenser, then become low pressure liquid through throttle valve, finally by evaporator
Heat is absorbed from phase-change material to become low-pressure steam or become low-pressure steam from ambient enviroment absorption heat by heat exchanger.
In addition, evaporator access includes two branches, the flow of each branch is controlled according to heat source surface temperature by current divider and by flowing
Meter measures, which is particularly suitable for the non-uniform situation of heat source two sides heat flux distribution.
Phase-change material fusion temperature should belong to the temperature range of heat source normal work, and the coefficient of heat transfer can be selected more in phase-change material
High composite phase-change material: balanced in phase-change material high-melting-point high thermal conductivity coefficient substance can be mixed, to form the coefficient of heat transfer
Higher composite phase-change material, the high-melting-point high thermal conductivity coefficient substance using metal nanoparticle, foam metal, carbon fiber,
Any one in carbon nanotube, graphene.As shown in Fig. 2, the temperature change according to phase-change material infers fusing/solidified
Journey, and determine that the fusing time of phase-change material is tm2-tm1, setting time ts2-ts1, fusing/setting temperature is Tpc。
As shown in figure 3, evaporator uses helical fin copper pipe, its heat exchange between phase-change material can be enhanced.
Those skilled in the art can understand that unless otherwise defined, all terms used herein (including skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Also
It should be understood that those terms such as defined in the general dictionary should be understood that have in the context of the prior art
The consistent meaning of meaning will not be explained in an idealized or overly formal meaning and unless defined as here.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not limited to this hair the foregoing is merely a specific embodiment of the invention
Bright, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention
Protection scope within.
Claims (6)
1. a kind of gas-liquid and fluid-solid coupling phase-change accumulation energy radiator, which is characterized in that include the heat sink module of phase-change accumulation energy and steaming
Send out refrigeration cycle module；
The heat sink module of phase-change accumulation energy includes the heat sink unit of N number of phase-change accumulation energy, and the N is the integer more than or equal to 1；
The heat sink unit of phase-change accumulation energy includes shell, phase-change material, pressure sensor, the first thermal resistance and the second thermal resistance；
The shell is that hollow closed cylinder is made of Heat Conduction Material, and lower end surface and the heat source to radiate directly connect
Touching, and the outer wall of lower end surface is equipped with the thermocouple for measuring heat source surface temperature；
The phase-change material is arranged in the intracorporal cavity of shell that there are air layers between the upper wall surface of the cavity；
The pressure sensor, the first thermal resistance, the second thermal resistance be separately positioned on the air layer, phase-change material top,
The lower part of phase-change material is respectively used to measure the pressure of air layer, the temperature on phase-change material top, the temperature of phase-change material lower part
Degree；
The sweat cooling loop module includes heat exchanger, first to fourth valve, compressor, condenser, throttle valve, current divider
With the one-to-one evaporation element of several and described heat sink unit of phase-change accumulation energy；
The current divider includes that an entrance and several and the evaporation element export correspondingly；
The evaporation element includes flowmeter and evaporator；
The evaporator is arranged in the heat sink unit phase-change material of the corresponding phase-change accumulation energy of evaporation element, one end and the flowmeter
One end pipeline be connected, the other end is connected with one end pipeline of second valve；The other end of the flowmeter and evaporation are single
The corresponding current divider outlet conduit of member is connected；
The other end of second valve is connected with one end pipeline of the entrance of compressor, the 4th valve respectively；
The outlet of the compressor, condenser, throttle valve entrance successively pipeline is connected；
The other end of 4th valve, heat exchanger, third valve successively pipeline is connected for one end；
The outlet of the throttle valve is connected with one end pipeline of the other end of the third valve, the first valve respectively；Described
The other end of one valve is connected with the inlet duct of the current divider.
2. gas-liquid according to claim 1 and fluid-solid coupling phase-change accumulation energy radiator, which is characterized in that the phase transformation storage
Can heat sink member also include infrared thermal imager, the infrared thermal imager is arranged outside shell, in conjunction with the first thermocouple,
Second thermocouple judges phase-change material fusing in shell or solid-liquid phase interface when solidifying.
3. gas-liquid according to claim 1 and fluid-solid coupling phase-change accumulation energy radiator, which is characterized in that the shell by
Aluminium is welded.
4. gas-liquid according to claim 1 and fluid-solid coupling phase-change accumulation energy radiator, which is characterized in that the evaporator
Using a helical fin copper pipe or several helical fin copper pipes being sequentially connected by pipeline.
5. gas-liquid according to claim 1 and fluid-solid coupling phase-change accumulation energy radiator, which is characterized in that N=2.
6. gas-liquid according to claim 1 and fluid-solid coupling phase-change accumulation energy radiator, which is characterized in that the phase transformation material
Equilibrium is mixed with high-melting-point high thermal conductivity coefficient substance in expecting, to form the higher composite phase-change material of the coefficient of heat transfer, the Gao Rong
Point high thermal conductivity coefficient substance is using any one in metal nanoparticle, foam metal, carbon fiber, carbon nanotube, graphene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910231574.2A CN110068166A (en) | 2019-03-26 | 2019-03-26 | A kind of gas-liquid and fluid-solid coupling phase-change accumulation energy radiator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910231574.2A CN110068166A (en) | 2019-03-26 | 2019-03-26 | A kind of gas-liquid and fluid-solid coupling phase-change accumulation energy radiator |
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Family
ID=67366569
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117042420A (en) * | 2023-10-09 | 2023-11-10 | 北京航空航天大学 | Electronic equipment heat dissipation system and method with sugar alcohol type PCM energy storage unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117042420A (en) * | 2023-10-09 | 2023-11-10 | 北京航空航天大学 | Electronic equipment heat dissipation system and method with sugar alcohol type PCM energy storage unit |
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Application publication date: 20190730 |