CN104697236A - Cooling system and method of airborne heating elements based on evaporative refrigeration - Google Patents
Cooling system and method of airborne heating elements based on evaporative refrigeration Download PDFInfo
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- CN104697236A CN104697236A CN201510074027.XA CN201510074027A CN104697236A CN 104697236 A CN104697236 A CN 104697236A CN 201510074027 A CN201510074027 A CN 201510074027A CN 104697236 A CN104697236 A CN 104697236A
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- regenerator
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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
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/24—Storage receiver heat
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- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a cooling system and method of airborne heating elements based on evaporative refrigeration, and belongs to the field of cooling airborne equipment. The cooling system comprises a spray cooling cycle subsystem of high heat-flow heating elements, an evaporative refrigeration cycle subsystem, and a cold accumulator (5) for connecting the spray cooling cycle subsystem and the evaporative refrigeration cycle subsystem, wherein the spray cooling cycle subsystem of high heat-flow heating elements comprises a buffer tank (6), a circulating pump (7), a filter (8), a flow regulating valve (9), a spray cavity (12) and a bypass valve (13); the evaporative refrigeration cycle subsystem comprises a condenser (1), a heat regenerator (3), an expansion valve (4) and a compressor (14). Through adoption of the cooling system, the rapid heat dissipation of the high heat-flow heating elements can be realized, and the purpose of repeated circular heat dissipation is achieved through the cold accumulator; besides, the cold accumulator is arranged in the middle, the working time intervals of the heating elements and the characteristic of high latent heat of phase-change materials are fully utilized, so that the volume of the equipment of the system is greatly reduced, and the requirements of airborne equipment are satisfied.
Description
Technical field
The present invention relates to a kind of cooling system and method for the airborne heater element based on sweat cooling, belong to airborne equipment cooling field.
Background technology
Along with aircraft mobility, Stealth Fighter, defending performance improve constantly with requiring, high power laser light technology, electronic devices and components height integrated with microminiaturization etc. technology developed rapidly and gradually Successful utilization to multiple field such as materials chemistry, astrosurveillance; Simultaneously high power diode laser succeed in developing and increase the application of high power solid state laser in Aero-Space military field, and to be widely used in the research and development program element of the every laser weapon of the U.S..Thing followed problem is, in high power situation, a large amount of unwanted heats that solid state laser produces at work can reduce the quality power output of laser beam, equipment heating power is brought constantly to raise thus, heat flow density can reach the even thousands of W/cm2 of hundreds of W/cm2, in this case laser medium can be damaged, therefore the heating problem of high power solid state laser becomes the bottleneck that restriction improves its power output further, and how efficiently, reliably the quick heat radiating problem of solution laser instrument and electronic equipment high heat flux is significant.
For high-power electronic component, traditional cooling technology can not meet cooling requirement.Spray cooling based on phase-change heat-exchange cooling has the cooling capacity of high heat flux, and chilling temperature is even, the coefficient of heat transfer is high, can meet the cooling requirement of the high-power electronic components such as laser cooling, high hot-fluid Electronic cooling.For solving the high heat flux cooling problem of military opportunity of combat, technical research and the engineering application of the airborne spray cooling system of opportunity of combat are imperative.
As airborne equipment, not only meet cooling performance demand, also should consider deadweight problem, the lift of aircraft is limited, and aircraft self structure and system are conducted oneself with dignity lighter, and the potential economic benefit brought is larger, even more important for fighter plane.And along with the proposition of many electricity, electric aircraft concept, modernization aircraft, gradually to the future development of Integrated Energy management integration, therefore as airborne equipment, to be inevitable trend to electric power integrated development.Meanwhile, the refrigerating capacity of sweat cooling circulation receives much concern and widely uses in service aircraft.Comprehensive above development trend, and in conjunction with airborne video recorder launch time in practical application is short, heat flow density is high, but this feature that transmission interval is longer, the present invention provides the high and cooling system of small in volume of a kind of cooling effectiveness.
Summary of the invention
The object of this invention is to provide cooling system and the method for the airborne heater element based on sweat cooling that a set of cooling effectiveness is high, the light volume of quality is little, economy is high.
Native system comprises high hot-fluid heater element misting cooling cycle subsystem and sweat cooling cycle subsystem; Also comprise and connect above-mentioned two subsystems and the regenerator of interior filling phase change medium.The misting cooling cycle subsystem wherein cooling high hot-fluid heater element comprises: surge tank, circulating pump, filter, flow control valve, spraying chamber, by-passing valve; Spraying comprises cooling jet and heater element in chamber; The outlet of spraying chamber is divided into two-way, one tunnel is connected with by-passing valve first end, another road is connected with regenerator first limit entrance, the outlet of regenerator first limit is in parallel with by-passing valve second end after surge tank, circulating pump successively, is connected successively after parallel connection after filter, flow control valve with cooling jet again.Wherein sweat cooling cycle subsystem comprises: condenser, regenerator, expansion valve, compressor; Compressor outlet successively through the hot limit of condenser, the hot limit of regenerator and expansion valve, be connected with regenerator Second Edge entrance, the outlet of regenerator Second Edge is connected with regenerator cold limit entrance, and regenerator cold limit outlet is connected with suction port of compressor, and ram-air is connected with condenser cold limit entrance.
The cooling means of the cooling system of the above-described airborne heater element based on sweat cooling, it is characterized in that: the high temperature refrigerating medium of chamber outlet of spraying in misting cooling cycle subsystem enters regenerator and solid phase change material heat exchange, absorb the cold of phase-change material become low temperature refrigerating medium and send into cooling jet after being pressurizeed by circulating pump, the particle that cooling jet is atomized into minute diameter forces to be sprayed onto the surface of heater element, absorb the heat of heater element, this system realizes the quick cooling to heater element, the solid phase change material of filling in regenerator in this process liquefies because absorbing the heat of high temperature refrigerating medium.Enter the condenser air setting that is stamped from the high temperature and high pressure gaseous refrigerant of compressor outlet in sweat cooling cycle subsystem and become liquid refrigerant, again through regenerator cross cold after, become the cold-producing medium of low-temp low-pressure through expansion valve reducing pressure by regulating flow, it is solid-state that last low-temperature refrigerant makes it be condensed into through regenerator and liquid state phase change material heat exchange.For making full use of the remaining cold that regenerator outlet cold-producing medium carries, cold-producing medium being passed into the cold limit of regenerator as low-temperature receiver, entering compressor compresses from the gaseous refrigerant with certain degree of superheat of regenerator cold limit outlet, thus complete circulation.
In actual applications, short, the caloric value time interval that is large, that the launch launch time of laser weapon is long, and spray cooling system has heat exchange is rapid, heat flow density is high feature, just in time meet the heat exchange demand of laser weapon.In the misting cooling circulatory system, refrigerating medium is injected into after heater element Surface absorption heat through nozzle, phase-change material that is rapid and regenerator carries out heat exchange, utilize the latent heat of liquefaction of phase-change material, high temperature refrigerating medium is cooled fast, realize the discharging cold course of regenerator, because phase-change material latent heat of phase change is large, although laser weapon heating power is large, but its working time is shorter, phase-change material use amount is less; After misting cooling process terminates, utilize the low-temperature refrigerant of expansion valve outlet that phase-change material is come back to solid-state, realize the process of cool of regenerator, the time interval of launching due to laser weapon is long, the power of cold-producing medium and phase change material heat exchanger greatly reduces, thus realizes the object reducing heat exchanger volume.The circulation of comprehensive utilization sweat cooling, the latent heat of phase-change material and the feature of spraying system operation range, middle regenerator substantially reduces system bulk and deadweight, meets airborne equipment demand.
Accompanying drawing explanation
Fig. 1 is the cooling system of the airborne heater element based on sweat cooling;
Label title in Fig. 1: 1 condenser, 2 ram-air mouths, 3 regenerators, 4 expansion valves, 5 regenerators, 6 surge tanks, 7 circulating pumps, 8 filters, 9 flow control valves, 10 cooling jets, 11 heater elements, 12 spraying chambeies, 13 by-passing valves, 14 compressors;
Detailed description of the invention
As shown in Figure 1, a kind of airborne high hot-fluid heater element cooling system in conjunction with electric power of the present invention, comprises condenser 1, ram-air mouth 2, regenerator 3, expansion valve 4, regenerator 5, surge tank 6, circulating pump 7, filter 8, flow control valve 9, cooling jet 10, heater element 11, spraying chamber 12, by-passing valve 13, compressor 14.
Misting cooling process specific implementation process is as follows: low temperature refrigerating medium is by sending into cooling jet 10 after circulating pump 7 supercharging, and atomization becomes micron-sized drop, and forced jet takes away amount of heat to the surface of heater element 11.Without in Boiling Fuel Injection Spray cooling, heat transfer mechanism based on forced convertion and liquid film evaporation, and enters in phase transformation misting cooling, and nucleate boiling and secondary nucleation then play and more significantly act on.Misting cooling can take away amount of heat at low-temperature surface temperature, and has good heat exchange property, the uniform advantage such as cooling wall temperature, less working medium demand.High temperature refrigerating medium after heat exchange, by regenerator 5 and solid phase change material heat exchange, utilizes the latent heat of liquefaction of phase-change material, realizes the discharging cold course of regenerator 5.Cooled low temperature refrigerating medium is sent into nozzle through circulating pump 7 and is circulated.Wherein buffer 6 is to prevent the change of refrigerating medium flow from impacting the high hot-fluid heater element misting cooling circulatory system, and by-passing valve 13 is in order to prevent flow excessive, and hydrops in spraying chamber 12, makes this circulatory system normally run.
The process of cool of regenerator 6 is as follows: the high-pressure gaseous refrigerant exported from compressor 14, the cold-producing medium of high-pressure liquid is condensed into by condenser 1, again after regenerator 3 is excessively cold, the cold-producing medium of low-temp low-pressure is become through expansion valve 4 reducing pressure by regulating flow, and make it get back to phase transformation initial point with the liquid state phase change material heat exchange in regenerator 5, achieve the cold-storage of regenerator 6, the remaining cold of cold-producing medium is exported for making full use of regenerator 6, cold-producing medium is passed into the cold limit of regenerator 3 as low-temperature receiver, enter compressor 14 from the gaseous refrigerant with certain degree of superheat of regenerator 3 cold limit outlet to compress, thus complete circulation.Consider that aircraft low-temperature receiver is limited, the low-temperature receiver in condenser 1 adopts ram-air.
The theoretical formulation that native system is implemented is as follows:
Q＝K
1A
1ΔT
1·t
1＝K
2A
2ΔT
2·t
2＝K
3A
3ΔT
3·t
3
In above formula, Q---heater element 14 gross calorific power, J;
K
1---the heat transfer coefficient on the misting cooling surface of heater element 11, W/ (m
2dEG C);
K
2---the heat transfer coefficient of refrigerating medium and regenerator 5 heat exchange, W/ (m
2dEG C);
K
3---the heat transfer coefficient of cold-producing medium and regenerator 5 heat exchange, W/ (m
2dEG C);
A
1---heater element 11 surface area ， ㎡;
A
2---the heat transfer area ， ㎡ of refrigerating medium and regenerator 5 heat exchange;
A
3---the heat transfer area ， ㎡ of cold-producing medium and regenerator 5 heat exchange;
Δ T
1---cooling jet 10 exports the heat transfer temperature difference on refrigerating medium and heater element 11 surface, DEG C;
Δ T
2---the heat transfer temperature difference of refrigerating medium and regenerator 5 heat exchange, DEG C;
Δ T
3---the heat transfer temperature difference of cold-producing medium and regenerator 5 heat exchange, DEG C;
T
1---misting cooling injecting time, s;
T
2---the working time of refrigerating medium and regenerator 5 heat exchange, s;
T
3---the working time of cold-producing medium and regenerator 5 heat exchange, s.
For the misting cooling circulatory system, time t
1=t
2, temperature difference T
1with Δ T
2differ limited, heater element surface area A
1be generally cm
2magnitude, the heat transfer area A of refrigerating medium and regenerator heat exchange
2m can be expanded to
2magnitude, the Coefficient K of misting cooling
1be generally several ten thousand, keep the balance of equation like this, K
2reach about tens can meet the demands, for misting cooling circulation system design provides feasibility in theory.For evaporation circulating system, due to the Coefficient K of cold-producing medium and regenerator heat exchange
3lower, but the temperature difference of cold-producing medium and phase-change material is comparatively large, and have long period interval feature after laser weapon transmitting can be made full use of, greatly reduce the power of cold-producing medium and phase change material heat exchanger, thus realize the object reducing heat exchanger volume.In addition because phase-change material often has larger latent heat of phase change, although laser weapon heating power is large, its working time is shorter, and phase-change material use amount is but very little.The present invention greatly reduces system equipment volume by the middle regenerator structure being filled with phase-change material, meets airborne equipment requirement.
Claims (2)
1. based on a cooling system for the airborne heater element of sweat cooling, it is characterized in that: native system comprises high hot-fluid heater element misting cooling cycle subsystem and sweat cooling cycle subsystem; Also comprise and connect above-mentioned two subsystems and the regenerator (5) of interior filling phase change medium;
Wherein high hot-fluid heater element misting cooling cycle subsystem comprises: surge tank (6), circulating pump (7), filter (8), flow control valve (9), spraying chamber (12), by-passing valve (13); Cooling jet (10) and heater element (11) is comprised in spraying chamber (12); Spraying chamber (12) outlet is divided into two-way, one tunnel is connected with by-passing valve (13) first end, another road is connected with regenerator (5) first limit entrance, the outlet of regenerator (5) first limit is in parallel with by-passing valve (13) second end after surge tank (6), circulating pump (7) successively, is connected successively after parallel connection after filter (8), flow control valve (9) with cooling jet (10) again;
Wherein sweat cooling cycle subsystem comprises: condenser (1), regenerator (3), expansion valve (4), compressor (14); Compressor (14) outlet successively through the hot limit of condenser (1), the hot limit of regenerator (3) and expansion valve (4), be connected with regenerator (5) Second Edge entrance, the outlet of regenerator (5) Second Edge is connected with regenerator (3) cold limit entrance, regenerator (3) cold limit outlet is connected with compressor (14) entrance, and ram-air is connected with condenser (1) cold limit entrance.
2. utilize the cooling means of the cooling system of the airborne heater element based on sweat cooling described in claim 1, it is characterized in that: the high temperature refrigerating medium that chamber (12) of spraying in misting cooling cycle subsystem exports enters regenerator (5) and solid phase change material heat exchange, the cold absorbing phase-change material becomes low temperature refrigerating medium and sends into cooling jet (10) by after circulating pump (7) pressurization, the particle that cooling jet (10) is atomized into minute diameter forces to be sprayed onto the surface of heater element (11), absorb the heat of heater element, this system realizes the quick cooling to heater element, the solid phase change material of filling in regenerator (5) in this process liquefies because absorbing the heat of high temperature refrigerating medium,
The high temperature and high pressure gaseous refrigerant exported from compressor (14) in sweat cooling cycle subsystem enters the condenser air setting that is stamped and becomes liquid refrigerant, again after regenerator (3) is excessively cold, become the cold-producing medium of low-temp low-pressure through expansion valve (4) reducing pressure by regulating flow, it is solid-state that last low-temperature refrigerant makes it be condensed into through regenerator (5) and liquid state phase change material heat exchange;
For making full use of the remaining cold that regenerator outlet cold-producing medium carries, cold-producing medium is passed into the cold limit of regenerator (3) as low-temperature receiver, enter compressor (14) compression from the gaseous refrigerant with certain degree of superheat of regenerator (3) cold limit outlet, thus complete circulation.
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| CN201510074027.XA CN104697236A (en) | 2015-02-11 | 2015-02-11 | Cooling system and method of airborne heating elements based on evaporative refrigeration |
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| CN201510074027.XA CN104697236A (en) | 2015-02-11 | 2015-02-11 | Cooling system and method of airborne heating elements based on evaporative refrigeration |
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| CN104697236A true CN104697236A (en) | 2015-06-10 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016909A (en) * | 2016-05-31 | 2016-10-12 | 中国航空工业集团公司西安飞机设计研究所 | Rapid cooling system for cold accumulation type airborne equipment |
| CN106091743A (en) * | 2016-07-28 | 2016-11-09 | 江苏科技大学 | A kind of airborne high heat flux surface cooling system and method |
| CN106642855A (en) * | 2016-11-16 | 2017-05-10 | 南京航空航天大学 | Airborne evaporation cycle refrigeration comprehensive heat management system and method and application thereof |
| CN106941100A (en) * | 2016-01-04 | 2017-07-11 | 中兴通讯股份有限公司 | A kind of economic benefits and social benefits cooling system |
| CN107152890A (en) * | 2017-04-18 | 2017-09-12 | 南京航空航天大学 | A kind of modularization composite high-energy weapon cooling system and its control method |
| CN107172865A (en) * | 2017-06-29 | 2017-09-15 | 南京工业大学 | Airborne high-heat-flux equipment thermal management system using spray cooling and adsorption refrigeration |
| CN108132275A (en) * | 2016-12-01 | 2018-06-08 | 南京工业大学 | Closed spray cooling experiment system suitable for multiple cooling media |
| CN108168140A (en) * | 2018-02-07 | 2018-06-15 | 南京工业大学 | Airborne spray cooling system using radiation plate to cool circulating water |
| CN108362025A (en) * | 2018-03-27 | 2018-08-03 | 南京工业大学 | Airborne spray cooling system using phase-change material to cool spray medium and micro-channel heat exchanger to prevent failure |
| CN108834378A (en) * | 2018-07-30 | 2018-11-16 | 南京工业大学 | Airborne spray cooling system using ram air and evaporative refrigeration cycle cooling circulating water |
| CN109449730A (en) * | 2018-10-09 | 2019-03-08 | 湖北航天技术研究院总体设计所 | Cold storage heat management device applied to high power laser equipment |
| CN109682412A (en) * | 2019-01-16 | 2019-04-26 | 南京航空航天大学 | Cold nebulization cooling experiment device and method |
| CN109911226A (en) * | 2017-12-12 | 2019-06-21 | 海鹰航空通用装备有限责任公司 | A kind of adaptive temperature-controlling system |
| CN111511164A (en) * | 2020-03-30 | 2020-08-07 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Spray cooling phase change heat sink integrated evaporation cooling device |
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| CN106941100A (en) * | 2016-01-04 | 2017-07-11 | 中兴通讯股份有限公司 | A kind of economic benefits and social benefits cooling system |
| CN106941100B (en) * | 2016-01-04 | 2020-04-28 | 中兴通讯股份有限公司 | Double-effect cooling system |
| CN106016909A (en) * | 2016-05-31 | 2016-10-12 | 中国航空工业集团公司西安飞机设计研究所 | Rapid cooling system for cold accumulation type airborne equipment |
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| CN106091743A (en) * | 2016-07-28 | 2016-11-09 | 江苏科技大学 | A kind of airborne high heat flux surface cooling system and method |
| CN106642855A (en) * | 2016-11-16 | 2017-05-10 | 南京航空航天大学 | Airborne evaporation cycle refrigeration comprehensive heat management system and method and application thereof |
| CN108132275A (en) * | 2016-12-01 | 2018-06-08 | 南京工业大学 | Closed spray cooling experiment system suitable for multiple cooling media |
| CN107152890A (en) * | 2017-04-18 | 2017-09-12 | 南京航空航天大学 | A kind of modularization composite high-energy weapon cooling system and its control method |
| CN107172865A (en) * | 2017-06-29 | 2017-09-15 | 南京工业大学 | Airborne high-heat-flux equipment thermal management system using spray cooling and adsorption refrigeration |
| CN109911226B (en) * | 2017-12-12 | 2021-02-05 | 海鹰航空通用装备有限责任公司 | Self-adaptive temperature control system |
| CN109911226A (en) * | 2017-12-12 | 2019-06-21 | 海鹰航空通用装备有限责任公司 | A kind of adaptive temperature-controlling system |
| CN108168140A (en) * | 2018-02-07 | 2018-06-15 | 南京工业大学 | Airborne spray cooling system using radiation plate to cool circulating water |
| CN108362025A (en) * | 2018-03-27 | 2018-08-03 | 南京工业大学 | Airborne spray cooling system using phase-change material to cool spray medium and micro-channel heat exchanger to prevent failure |
| CN108362025B (en) * | 2018-03-27 | 2023-10-31 | 南京工业大学 | Airborne spray cooling system using phase change material to cool spray medium and micro-channel heat exchanger to prevent failure |
| CN108834378A (en) * | 2018-07-30 | 2018-11-16 | 南京工业大学 | Airborne spray cooling system using ram air and evaporative refrigeration cycle cooling circulating water |
| CN109449730A (en) * | 2018-10-09 | 2019-03-08 | 湖北航天技术研究院总体设计所 | Cold storage heat management device applied to high power laser equipment |
| CN109682412A (en) * | 2019-01-16 | 2019-04-26 | 南京航空航天大学 | Cold nebulization cooling experiment device and method |
| CN109682412B (en) * | 2019-01-16 | 2023-11-07 | 南京航空航天大学 | Using method of low-temperature spray cooling experimental device |
| CN111511164A (en) * | 2020-03-30 | 2020-08-07 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Spray cooling phase change heat sink integrated evaporation cooling device |
| CN111511164B (en) * | 2020-03-30 | 2023-05-05 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Spray cooling phase-change heat sink integrated evaporative cooling device |
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