CN105526730A - Novel two-wheeled high-pressure dewatering air circulation refrigerating system and refrigerating method - Google Patents
Novel two-wheeled high-pressure dewatering air circulation refrigerating system and refrigerating method Download PDFInfo
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- CN105526730A CN105526730A CN201610022864.2A CN201610022864A CN105526730A CN 105526730 A CN105526730 A CN 105526730A CN 201610022864 A CN201610022864 A CN 201610022864A CN 105526730 A CN105526730 A CN 105526730A
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- heat exchanger
- air
- turbine
- heat exchange
- heat pipe
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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
- F25B11/00—Compression machines, plants or systems, using turbines, e.g. gas turbines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
- B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being conditioned
- B64D13/08—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being conditioned the air being heated or cooled
Abstract
The invention relates to a novel two-wheeled high-pressure dewatering air circulation refrigerating system and a refrigerating method and belongs to the technical field of airplane environment control. The novel two-wheeled high-pressure dewatering air circulation refrigerating system is characterized in that a fan (3) and a turbine (8) are located at the two ends of a rotating shaft; engine bleed air serves as supplying air (1) and sequentially passes through the hot side of a primary heat exchanger (2) and the hot side of a secondary heat exchanger (4) and then passes through an evaporation end (11) of a heat pipe exchanger (9) for being connected with an inlet of a water separator (7), a gas outlet of the water separator (7) is connected with an inlet of the turbine (8), and an outlet of the turbine (8) leads to a cockpit and an equipment compartment through a condensation end (10); heat exchanging is conducted between the condensation end (10) and the evaporation end (11), a segregation water outlet of the water separator (7) is lead to a cold side inlet of the secondary heat exchanger (4), and ram air (5) flowing through the cold side of primary heat exchanger (2) and the cold side of the secondary heat exchanger (4) is supplied with suction force by the fan (3). According to the novel two-wheeled high-pressure dewatering air circulation refrigerating system and the refrigerating method, the performance is good, parts are easy to match and flexible in adjusting.
Description
Technical field
The present invention relates to a kind of novel two-wheeled high pressure water separation regenerative air cycle cooling system air circulation refrigeration system and refrigerating method, belong to airplane environment control technical field.
Background technology
As the environmental control system of one of the important airborne equipment of aircraft, aircraft cabin pressure, temperature, humidity, air demand, the isoparametric regulation and control of air quality have been responsible in its effect, the cooling of electronic equipment, engine and wing anti-ice, fuel tank, hydraulic oil container and drinking water supercharging and provide source of the gas etc. for engine start.It mainly comprises bleed, heat/freeze, cockpit pressure regulates, cabin temperature regulates, anti-icing and be the subsystems such as the auxiliary power unit that meets ground environmental Kuznets Curves requirement, wherein air circulation refrigeration system is the part that in plane environmental control system, key technology is the most concentrated, play base support effect, namely the environmental control system of usual narrow sense refers to air circulation refrigeration system.
In order to ensure that plane environmental control system is high-comfort, high reliability and high economy, abroad plane environmental control system is carried out and deeply studied widely, high pressure water separation regenerative air cycle cooling system is due to its more advantage, replacement low pressure dewaters and becomes main flow gradually, successively experienced by T-F(turbine-fan) two-wheeled boost type, T-C(turbine-compressor) two-wheeled boost type, T-C-F(turbine-compressor-fan) stage such as three-wheel boost type and T-T-C-F four-wheel boost type, the environmental control system of current airliner is based on T-C-F three-wheel boost type system, part type is as Boeing777, A380 then have employed the more advanced T-T-C-F(turbine-turbine-compressor-fan of technology) four-wheel boost type system
And for helicopter, baby plane etc. still based on two wheel system, improve the efficiency of system, reducing fuel penalty is its developing direction.
Summary of the invention
The object of this invention is to provide that a kind of performance is good, parts match be simple, two-wheeled (turbofan T-F) the high pressure water separation regenerative air cycle cooling system air circulation refrigeration system of flexible adjustment and refrigerating method.
A kind of two-wheeled high pressure water separation regenerative air cycle cooling system air circulation refrigeration system, is characterized in that: comprise primary heat exchanger, fan, secondary heat exchanger, ram-air, separator, turbine, heat exchange of heat pipe; Wherein heat exchange of heat pipe comprises condensation end and evaporation ends; Fan and turbine are positioned at the two ends of rotating shaft; Engine bleed is connected with the hot limit entrance of primary heat exchanger as air feed, the hot limit outlet of primary heat exchanger is connected with the hot limit entrance of secondary heat exchanger, the hot limit outlet of secondary heat exchanger is connected with separator entrance through the evaporation ends of heat exchange of heat pipe, the gas vent of separator is connected with the entrance of turbine, and the outlet of turbine leads to passenger cabin and equipment compartment through condensation end; Heat exchange between condensation end and evaporation ends; The fractional condensation water out of separator is incorporated into porch, secondary heat exchanger cold limit; The ram-air flowing through the cold limit of primary heat exchanger and the cold limit of secondary heat exchanger provides suction force by fan.
Described two-wheeled high pressure water separation regenerative air cycle cooling system air circulation refrigeration system, is characterized in that: condensation end and the evaporation ends of above-mentioned heat exchange of heat pipe are connected to form integrated thermal by single tube.
Described two-wheeled high pressure water separation regenerative air cycle cooling system air circulation refrigeration system, is characterized in that: the condensation end of above-mentioned heat exchange of heat pipe and evaporation ends are connected to form separate heat pipe by two-tube; Add driving pump at the connecting fluid pipe of separate heat pipe to make it liquid phase working fluid pump into evaporation ends.Because separate heat pipe mainly drives liquid refrigerant circulation in heat pipe by field force difference, for making up possible being short of power, can install driving pump in liquid pipe additional increases power.
The refrigerating method of described two-wheeled high pressure water separation regenerative air cycle cooling system air circulation refrigeration system, it is characterized in that comprising following process: engine bleed as air feed after the hot limit of primary heat exchanger tentatively cools, cool further through the hot limit of secondary heat exchanger again, then lowered the temperature by the evaporation ends of heat exchange of heat pipe, cooled pressure-air enters after separator carries out turnout reason, dry, saturated pressure-air enters turbine expansion acting, temperature declines, the low-temp low-pressure air of turbine outlet has through the condensation end temperature of heat exchange of heat pipe and raises more by a small margin, transport to passenger cabin and equipment compartment, as being supplied to cabin air, flow through the ram-air on the cold limit of primary heat exchanger and the cold limit of secondary heat exchanger, provide suction force by fan, simultaneously the fractional condensation water of separator is incorporated into porch, secondary heat exchanger cold limit and mixes to improve heat exchange efficiency with ram-air.
The present invention is compared with existing T-F two-wheeled boost type environmental control system: existing system carrys out injection fraction by the additional injector of the air at turbine outlet place, this air-flow cools the air before entering turbine by condenser and dewaters, because injection air-flow needs higher pressure head, turbine outlet pressure is improved, expansion ratio of turbine has larger reduction, system effectiveness reduces, and it forms complexity and poor efficiency.New system is dewatered by heat exchange of heat pipe evaporation ends, overcomes above-mentioned shortcoming, and structure is simply efficient.Because heat pipe has minimum heat transfer resistance, the extended surface augmentation of heat transfer of air side can be carried out, reduce heat exchanger volume, and be an enclosed construction, oozing of having stopped may to exist between cold fluid and hot fluid is mixed, because high pressure water separation regenerative air cycle cooling system has higher efficiency, dew-point temperature can be made lower than 0 DEG C, the air themperature of turbine outlet is had larger reduction, close to even lower than 0 DEG C, thus can increase refrigerating capacity; Efficiently solve the low pressure outlet cold air existed that dewaters simultaneously and carry the series of problems that causes of liquefaction water secretly: as the comfort level of personnel, the short circuit etc. of instrument and equipment.In a word, air circulation system and phase transformation evaporation heat transfer organically combine by new system, have increased substantially the intensive of system and efficiency.For aircraft, namely decrease fuel penalty, increase the flying quality of aircraft.
Accompanying drawing explanation
Fig. 1 is two-wheeled high pressure water separation regenerative air cycle cooling system air circulation refrigeration system schematic diagram;
Label title in Fig. 1: 1. air feed, 2. primary heat exchanger, 3. fan, 4. secondary heat exchanger, 5. ram-air, 6. spray water, 7. separator, 8. turbine, 9. heat exchange of heat pipe, 10. condensation end, 11. evaporation ends, 12. are supplied to passenger cabin gas.
Detailed description of the invention
According to Fig. 1, two-wheeled high pressure water separation regenerative air cycle cooling system air circulation refrigeration system of the present invention, mainly comprises air feed 1, primary heat exchanger 2, fan 3, secondary heat exchanger 4, ram-air 5, and water spray 6, separator 7, turbine 8, heat exchange of heat pipe 9, is supplied to passenger cabin gas 12.Also comprise condensation end 10 and the evaporation ends 11 of composition heat exchange of heat pipe 9.Heat exchange of heat pipe 9 comprises condensation end 10 and evaporation ends 11, and condensation end 10 is completed by phase transformation with the heat transmission of evaporation ends 11, and heat transfer coefficient is very big, and heat transfer temperature difference is minimum, can ignore.Condensation end 10 according to actual conditions flexible arrangement, can be made of one formula or separate heat pipe with the heat transfer path of evaporation ends 11.
Because heat pipe is by phase-change heat transfer, integrally, only show as evaporation ends and condensation end, its inner loop drives by capillary force or field force, sometimes there is no clear and definite import and export
The above; be only the detailed description of the invention in the present invention; but protection scope of the present invention is not limited thereto; any people being familiar with this technology is in the technical scope disclosed by the present invention; the conversion or replacement expected can be understood; all should be encompassed in and of the present inventionly comprise within scope, therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (4)
1. a two-wheeled high pressure water separation regenerative air cycle cooling system air circulation refrigeration system, is characterized in that:
Comprise primary heat exchanger (2), fan (3), secondary heat exchanger (4), ram-air (5), separator (7), turbine (8), heat exchange of heat pipe (9); Wherein heat exchange of heat pipe (9) comprises condensation end (10) and evaporation ends (11); Fan (3) and turbine (8) are positioned at the two ends of rotating shaft;
Engine bleed is connected with the hot limit entrance of primary heat exchanger (2) as air feed (1), the hot limit outlet of primary heat exchanger (2) is connected with the hot limit entrance of secondary heat exchanger (4), the evaporation ends (11) of hot limit outlet through heat exchange of heat pipe (9) of secondary heat exchanger (4) is connected with separator (7) entrance, the gas vent of separator (7) is connected with the entrance of turbine (8), and the outlet of turbine (8) leads to passenger cabin and equipment compartment through condensation end (10); Heat exchange between condensation end (10) and evaporation ends (11);
The fractional condensation water out of separator (7) is incorporated into porch, secondary heat exchanger (4) cold limit;
The ram-air (5) flowing through primary heat exchanger (2) cold limit and secondary heat exchanger (4) cold limit provides suction force by fan (3).
2. two-wheeled high pressure water separation regenerative air cycle cooling system air circulation refrigeration system according to claim 1, is characterized in that:
Condensation end (10) and the evaporation ends (11) of above-mentioned heat exchange of heat pipe (9) are connected to form integrated thermal by single tube.
3. two-wheeled high pressure water separation regenerative air cycle cooling system air circulation refrigeration system according to claim 1, is characterized in that:
Condensation end (10) and the evaporation ends (11) of above-mentioned heat exchange of heat pipe (9) are connected to form separate heat pipe by two-tube; Add driving pump at the connecting fluid pipe of separate heat pipe to make it liquid phase working fluid to be pumped into evaporation ends (11).
4. the refrigerating method of two-wheeled high pressure water separation regenerative air cycle cooling system air circulation refrigeration system according to claim 1, is characterized in that comprising following process:
Engine bleed as air feed (1) after primary heat exchanger (2) hot limit tentatively cools, cool further through secondary heat exchanger (4) hot limit again, then lowered the temperature by the evaporation ends (11) of heat exchange of heat pipe (9), cooled pressure-air enters after separator (7) carries out turnout reason, dry, saturated pressure-air enters turbine (8) expansion work, temperature declines, condensation end (10) temperature of the low-temp low-pressure air that turbine (8) exports through heat exchange of heat pipe (9) has and raises more by a small margin, transport to passenger cabin and equipment compartment, as being supplied to cabin air (12),
Flow through the ram-air (5) on primary heat exchanger (2) cold limit and secondary heat exchanger (4) cold limit, provide suction force by fan (3);
Simultaneously the fractional condensation water of separator (7) is incorporated into porch, secondary heat exchanger (4) cold limit and mixes to improve heat exchange efficiency with ram-air.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610022864.2A CN105526730B (en) | 2016-01-14 | 2016-01-14 | New two-wheeled high pressure water separation regenerative air cycle cooling system air circulation refrigeration system and refrigerating method |
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| CN201610022864.2A CN105526730B (en) | 2016-01-14 | 2016-01-14 | New two-wheeled high pressure water separation regenerative air cycle cooling system air circulation refrigeration system and refrigerating method |
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| CN105526730A true CN105526730A (en) | 2016-04-27 |
| CN105526730B CN105526730B (en) | 2018-05-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115817829A (en) * | 2022-11-24 | 2023-03-21 | 南京航空航天大学 | Water-drop-shaped heat pipe hypersonic aircraft precooling device |
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| JP2000318695A (en) * | 1999-05-11 | 2000-11-21 | Shimadzu Corp | Air conditioner for aircraft |
| GB2355520A (en) * | 1999-07-30 | 2001-04-25 | Liebherr Aerospace Gmbh | Air-conditioning system for airplane cabins |
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| JP2004314654A (en) * | 2003-04-10 | 2004-11-11 | Shimadzu Corp | Air conditioning system for aircraft |
| CN203186578U (en) * | 2013-02-27 | 2013-09-11 | 中国航空工业集团公司西安飞机设计研究所 | Combined two-wheel type air refrigerating device |
| CN104443394A (en) * | 2014-10-31 | 2015-03-25 | 北京航空航天大学 | Novel airplane environment control system with organic Rankine cycle applied |
| CN205536647U (en) * | 2016-01-14 | 2016-08-31 | 南京航空航天大学 | Novel two -wheeled high pressure dewatering air cycle refrigerating system |
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2016
- 2016-01-14 CN CN201610022864.2A patent/CN105526730B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000318695A (en) * | 1999-05-11 | 2000-11-21 | Shimadzu Corp | Air conditioner for aircraft |
| GB2355520A (en) * | 1999-07-30 | 2001-04-25 | Liebherr Aerospace Gmbh | Air-conditioning system for airplane cabins |
| WO2002012062A1 (en) * | 2000-08-04 | 2002-02-14 | Hamilton Sundstrand Corporation | Environmental control system utilizing two air cycle machines |
| JP2004314654A (en) * | 2003-04-10 | 2004-11-11 | Shimadzu Corp | Air conditioning system for aircraft |
| CN203186578U (en) * | 2013-02-27 | 2013-09-11 | 中国航空工业集团公司西安飞机设计研究所 | Combined two-wheel type air refrigerating device |
| CN104443394A (en) * | 2014-10-31 | 2015-03-25 | 北京航空航天大学 | Novel airplane environment control system with organic Rankine cycle applied |
| CN205536647U (en) * | 2016-01-14 | 2016-08-31 | 南京航空航天大学 | Novel two -wheeled high pressure dewatering air cycle refrigerating system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115817829A (en) * | 2022-11-24 | 2023-03-21 | 南京航空航天大学 | Water-drop-shaped heat pipe hypersonic aircraft precooling device |
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