CN102536709B - The radially traveling wave thermoacoustic engine device that a kind of using waste heat from tail gas drives - Google Patents
The radially traveling wave thermoacoustic engine device that a kind of using waste heat from tail gas drives Download PDFInfo
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- CN102536709B CN102536709B CN201210022103.9A CN201210022103A CN102536709B CN 102536709 B CN102536709 B CN 102536709B CN 201210022103 A CN201210022103 A CN 201210022103A CN 102536709 B CN102536709 B CN 102536709B
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- temperature end
- thermoacoustic engine
- regenerator
- tail gas
- waste heat
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The radially traveling wave thermoacoustic engine device that a kind of using waste heat from tail gas drives comprises: exhaust pipe (1), temperature end heat exchanger (2), regenerator (3), primary cooler (4), feedback channel (5), hot buffer channel (6), resonance passage (7) resonant cavity (8). It is characterized in that: described temperature end heat exchanger (2), regenerator (3) and primary cooler (4) radially distribute, and be coaxially arranged with exhaust pipe (1); In temperature end heat exchanger (2), regenerator (3) and primary cooler (4), sound wave driving gas micelle radially vibrates. The present invention changes the design philosophy of traditional plane wave thermoacoustic engine, adopts radial wave design traveling wave thermoacoustic engine, and the contact-making surface of realizing regenerator and heat exchanger is the face of cylinder, increases heat exchange area, improves temperature end heat exchange efficiency. Temperature end heat exchanger (2) directly contacts with exhaust pipe (1), has avoided the connecting pipe in exhaust waste heat recovery device.
Description
Invention field
The present invention relates to a kind of engine device, the radially traveling wave thermoacoustic engine dress that particularly a kind of using waste heat from tail gas drivesPut.
Background technology
Along with the high speed development of global economy, the discharge capacity of automobile, steamer, aircraft, boiler exhaust gas increases day by day. AlthoughVarious combustion apparatus adopt advanced device to strengthen burning, have reduced imperfect combustion amount, and it is reasonable that air-fuel ratio is also tending towards.But, reduce exhaust gas heat loss and become estranged and reclaim the technology of using waste heat from tail gas and still make progress unhappy. Fuel oil in engine, burn produceHeat is removed outside the loss such as cooling water and friction, and 30%～40% the energy of also having an appointment is discharged into greatly with the form of using waste heat from tail gasIn gas, go. The waste heat of tail gas is about 16% left and right of the total amount of burning. Various combustion tail gas have temperature high (500 DEG C withOn), the feature such as pressure is large, flow velocity is fast. In order further to improve the thermal efficiency, reach energy-saving and cost-reducing object, reclaim tail gasWaste heat is also an important energy saving way.
Thermoacoustic engine is to utilize thermoacoustic effect, realizes heat energy and transforms and realize to acoustic energy the sonic generator that sound merit is exported.The mechanism of thermoacoustic engine is to carry out heat exchange by the compression of fluid, expansion, displacement and solid interface. Start with traditionMachine is compared, and thermoacoustic engine is simple in structure, movement-less part, reliability are high, long service life; It adopts nitrogen, heliumThe inert gases such as gas are as working medium, and working medium environmental friendliness is pollution-free; Thermoacoustic engine can utilize industrial waste heat as thermal source,Realize the utilization to low-grade energy, contribute to improve the comprehensive utilization ratio of the energy.
At present, most research work is all that thermoacoustic engine is positioned in plane wave resonator. In this structureUsing waste heat from tail gas drives in thermoacoustic engine, and the contact-making surface of regenerator and heat exchanger is plane, and need to increase pipeline will simultaneouslyTail gas imports in temperature end heat exchanger, greatly reduces heat exchange efficiency. Swift has simply considered the cylindrical humorous of model radiallyThe hot sound heat engine of standing wave of device of shaking, and developed wave equation. Arnott has derived pressure and acoustic resistance in the storehouse of radial wavePressure in anti-differential equation of first order and open resonatron, heat exchanger and the transfer equation of impedance. Lightfoot developmentStanding Wave Thermoacoustic Engine radially, and carried out experimental study. But, because standing wave machine is based on irreversible thermo-contact, itsSonic heat changing efficiency is low. 1979, Ceperley proposed Traveling-wave Thermoacoustic Heat Engine, the gas in such heat engine regeneratorMicelle can be realized reversible Sonic heat changing in theory, and Sonic heat changing efficiency is higher. 1999, U.S. LosAlamos groundThe traveling wave thermoacoustic engine of system is taking helium as working medium, and resonatron length is 3.74m, and system resonance frequency is 86Hz, is addingEnter in the situation of heat 3kW, obtain 1.2 system pressure ratio, to resonatron output sound merit 710W, the thermal efficiency reaches 0.3,Relatively Carnot's cycle efficiency is 41%, completely can with internal combustion engine 0.25-0.40 and traditional piston type Stirling engine0.2-0.38 compares favourably. Its achievement in research is delivered on " Nature ", and at home and abroad academia and industrial quarters cause extensive passNote. This has also greatly inspired the research enthusiasm of various countries thermoacoustics person to travelling-wave type thermoacoustic engine. In recent years, based on rowThe thermoacoustic engine research of ripple mode of operation has obtained great attention.
For this reason, the present invention is directed to using waste heat from tail gas utilization, proposed radially traveling wave thermoacoustic engine device.
Summary of the invention
The radially traveling wave thermoacoustic engine that the object of the present invention is to provide a kind of using waste heat from tail gas to drive, according to hot sound theory,In conjunction with the energy-conserving and environment-protective theory of using waste heat from tail gas recovery, change the design philosophy of traditional plane wave thermoacoustic engine, adopt footpathTo ripple design traveling wave thermoacoustic engine, realize the cylinder heat exchange surface of regenerator and heat exchanger, increase heat exchange area. HighTemperature tail gas directly acts on regenerator temperature end and drives thermoacoustic engine, effectively avoids the company in present stage waste-heat recovery deviceTake over road, improve heat exchange efficiency.
Technical scheme of the present invention is as follows:
The radially traveling wave thermoacoustic engine device that a kind of using waste heat from tail gas drives comprises: exhaust pipe (1), temperature end heat exchanger(2), regenerator (3), primary cooler (4), feedback channel (5), hot buffer channel (6), resonance passage (7)Resonant cavity (8). It is characterized in that: described temperature end heat exchanger (2), regenerator (3) and primary cooler (4)Radially distribute, and be coaxially arranged with exhaust pipe (1); At temperature end heat exchanger (2), regenerator (3) and mainIn cooler (4), the vibration of sound wave driving gas micelle, its orientation of oscillation is radially.
In described regenerator (3), all ecto-entads radially of thermograde direction harmony merit direction of transfer, described temperature ladderDegree direction refers to point to temperature end by low-temperature end.
Described regenerator (3) is the face of cylinder with the contact surface of temperature end heat exchanger (2) and primary cooler (4), increasesLarge heat exchange area, improves heat exchange efficiency.
Described temperature end heat exchanger (2) directly contacts with exhaust pipe (1), and contact surface is the face of cylinder, increases heat exchangeArea, improves temperature end heat exchange efficiency, has avoided the connecting pipe in exhaust waste heat recovery device simultaneously.
In the radially traveling wave thermoacoustic engine device that using waste heat from tail gas of the present invention drives, also further comprise described in being installed onDirect current suppressor (9) in feedback channel (5).
Described direct current suppressor (9) can be metallic elastic film, organic elastomer film or jet pump; Described organic elastomerFilm is the flexible sheet that silica gel, rubber or polyester plastics are made; Described metallic elastic film be spring steel, beryllium-bronze orThe flexible sheet that stainless steel is made.
In the radially traveling wave thermoacoustic engine device that using waste heat from tail gas of the present invention drives, also further comprise described in being installed onSupplementary cooler (10) in hot buffer channel (6).
In the radially traveling wave thermoacoustic engine device that using waste heat from tail gas of the present invention drives, use nitrogen, helium, carbon dioxide,The mist of one or more gas compositions in argon gas or hydrogen is as working media.
Compared with prior art, its key technology exists the radially traveling wave thermoacoustic engine device that using waste heat from tail gas of the present invention drivesIn:
According to hot sound theory, the energy-conserving and environment-protective theory reclaiming in conjunction with using waste heat from tail gas, changes traditional plane wave thermoacoustic engineDesign philosophy, adopt radial wave design to realize traveling wave thermoacoustic engine. The radial row ripple that using waste heat from tail gas of the present invention drivesIn thermoacoustic engine device, temperature end heat exchanger (2), regenerator (3) and primary cooler (4) radially distribute, andBe coaxially arranged with exhaust pipe (1); In temperature end heat exchanger (2), regenerator (3) and primary cooler (4),The vibration of sound wave driving gas micelle, its orientation of oscillation radially.
The radially traveling wave thermoacoustic engine device that using waste heat from tail gas of the present invention drives possesses following advantage: described regenerator (3)Be the face of cylinder with the contact surface of temperature end heat exchanger (2) and primary cooler (4), increase heat exchange area, raising is changedThe thermal efficiency; Temperature end heat exchanger (2) directly contacts with exhaust pipe (1), and contact surface is the face of cylinder, increases heat exchangeArea, improves temperature end heat exchange efficiency, has avoided the connecting pipe in exhaust waste heat recovery device simultaneously.
Brief description of the drawings
Fig. 1 is the structural representation of the radially traveling wave thermoacoustic engine device of using waste heat from tail gas driving of the present invention;
Fig. 2 is the structure cutaway view of the radially traveling wave thermoacoustic engine device of using waste heat from tail gas driving of the present invention.
Fig. 3 is the embodiment of the present invention 1 structural representation;
Fig. 4 is the embodiment of the present invention 2 structural representations;
In figure: 1-exhaust pipe, 2-temperature end heat exchanger, 3-regenerator, 4-primary cooler, 5-feedback channel,The hot buffer channel of 6-, 7-resonance passage, 8-resonator, 9-direct current suppressor, 10-supplementary cooler.
Detailed description of the invention
Further describe the present invention below in conjunction with drawings and Examples:
Embodiment 1
As shown in Figure 3, it comprises the structure of the present embodiment: exhaust pipe 1, temperature end heat exchanger 2, regenerator 3, main coldBut device 4, feedback channel 5, hot buffer channel 6, resonance passage 7, resonator 8, direct current suppressor 9 and supplementary cooler 10.It is characterized in that: described temperature end heat exchanger 2, regenerator 3 and primary cooler 4 radially distribute, and be with exhaust pipe 1Coaxially arranged; In temperature end heat exchanger 2, regenerator 3 and primary cooler 4, the vibration of sound wave driving gas micelle, its vibrationDirection radially.
In the present embodiment, in regenerator 3, all ecto-entads radially of thermograde direction harmony merit direction of transfer, described temperatureDegree gradient direction refers to point to temperature end by low-temperature end.
In the present embodiment, regenerator 3 is the face of cylinder with the contact surface of temperature end heat exchanger 2 and primary cooler 4, increasesLarge heat exchange area, improves heat exchange efficiency.
In the present embodiment, temperature end heat exchanger 2 directly contacts with exhaust pipe 1, and contact surface is the face of cylinder, and increase is changedHot side is long-pending, improves temperature end heat exchange efficiency, has avoided the connecting pipe in exhaust waste heat recovery device simultaneously.
In the present embodiment, direct current suppressor 9 is jet pump.
In the present embodiment, use helium as working media.
Embodiment 2
As shown in Figure 3, it comprises the structure of the present embodiment: exhaust pipe 1, temperature end heat exchanger 2, regenerator 3, main coldBut device 4, feedback channel 5, hot buffer channel 6, resonance passage 7 resonant cavity 8. It is characterized in that: described temperature end heat exchangeDevice 2, regenerator 3 and primary cooler 4 radially distribute, and are coaxially arranged with exhaust pipe 1; Temperature end heat exchanger 2,In regenerator 3 and primary cooler 4, the vibration of sound wave driving gas micelle, its orientation of oscillation is radially.
In the present embodiment, in regenerator 3, all ecto-entads radially of thermograde direction harmony merit direction of transfer, described temperatureDegree gradient direction refers to point to temperature end by low-temperature end.
In the present embodiment, regenerator 3 is the face of cylinder with the contact surface of temperature end heat exchanger 2 and primary cooler 4, increasesLarge heat exchange area, improves heat exchange efficiency.
In the present embodiment, temperature end heat exchanger 2 directly contacts with exhaust pipe 1, and contact surface is the face of cylinder, and increase is changedHot side is long-pending, improves temperature end heat exchange efficiency, has avoided the connecting pipe in exhaust waste heat recovery device simultaneously.
In the present embodiment, use argon gas to account for 60% argon gas and helium mix gas as working media.
Claims (8)
1. the radially traveling wave thermoacoustic engine device that using waste heat from tail gas drives, comprising: exhaust pipe (1), temperature endHeat exchanger (2), regenerator (3), primary cooler (4), feedback channel (5), hot buffer channel (6), resonancePassage (7) resonant cavity (8); It is characterized in that: described temperature end heat exchanger (2), regenerator (3), main coldBut device (4), feedback channel (5) and hot buffer channel (6) are connected to form sound wave loop successively; Described resonance passage (7)One end is connected with feedback channel (5) and hot buffer channel (6) in described sound wave loop simultaneously, described resonance passage(7) other end is connected with resonator (8) and forms resonance branch road; Described temperature end heat exchanger (2), regenerator (3)With primary cooler (4) is along the radial distribution of exhaust pipe, and be coaxially arranged with exhaust pipe (1); Change in temperature endIn hot device (2), regenerator (3) and primary cooler (4), the vibration of sound wave driving gas micelle, its orientation of oscillation is along footpathTo direction; Described radial finger is along exhaust pipe cross section radial direction, with axially vertical direction, described axial finger and tailThe direction of feed channel central axes; Realize the Cylindrical Surfaces Contact of heat exchange element, when not affecting exhaust emissions, increasedHeat exchange area; High-temperature tail gas directly heats temperature end heat exchanger and drives thermoacoustic engine, avoids complicated connecting pipe, letterWhen changing system architecture, improve heat exchange efficiency.
2. the radially traveling wave thermoacoustic engine device that using waste heat from tail gas according to claim 1 drives, is characterized in that:In described regenerator (3), all ecto-entads radially of thermograde direction harmony merit direction of transfer, described thermogradeDirection refers to point to temperature end by low-temperature end.
3. the radially traveling wave thermoacoustic engine device that using waste heat from tail gas according to claim 1 drives, is characterized in that:Described regenerator (3) is the face of cylinder with the contact surface of temperature end heat exchanger (2) and primary cooler (4), and increase is changedHot side is long-pending, improves heat exchange efficiency.
4. the radially traveling wave thermoacoustic engine device that using waste heat from tail gas according to claim 1 drives, is characterized in that:Described temperature end heat exchanger (2) directly contacts with exhaust pipe (1), and contact surface is the face of cylinder, increases heat exchange area,Improve temperature end heat exchange efficiency, avoided the connecting pipe in exhaust waste heat recovery device simultaneously.
5. the radially traveling wave thermoacoustic engine device that using waste heat from tail gas according to claim 1 drives, is characterized in that:Also further comprise the direct current suppressor (9) being installed in described feedback channel (5).
6. the radially traveling wave thermoacoustic engine device that using waste heat from tail gas according to claim 5 drives, is characterized in that:Described direct current suppressor (9) can be metallic elastic film, organic elastomer film or jet pump; Described organic elastomer film isThe flexible sheet that silica gel, rubber or polyester plastics are made; Described metallic elastic film is spring steel, beryllium-bronze or stainlessThe flexible sheet that steel is done.
7. the radially traveling wave thermoacoustic engine device that using waste heat from tail gas according to claim 1 drives, is characterized in that:Also further comprise the supplementary cooler (10) being installed in described hot buffer channel (6).
8. the radially traveling wave thermoacoustic engine device that using waste heat from tail gas according to claim 1 drives, is characterized in that:Use the mist of one or more gas compositions in nitrogen, helium, carbon dioxide, argon gas or hydrogen as workMake medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210022103.9A CN102536709B (en) | 2012-02-01 | 2012-02-01 | The radially traveling wave thermoacoustic engine device that a kind of using waste heat from tail gas drives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210022103.9A CN102536709B (en) | 2012-02-01 | 2012-02-01 | The radially traveling wave thermoacoustic engine device that a kind of using waste heat from tail gas drives |
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| Publication Number | Publication Date |
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| CN102536709A CN102536709A (en) | 2012-07-04 |
| CN102536709B true CN102536709B (en) | 2016-05-18 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1592816A (en) * | 2001-11-26 | 2005-03-09 | 国际壳牌研究有限公司 | Thermoacoustic electric power generator |
| FR2890413A1 (en) * | 2005-09-06 | 2007-03-09 | Renault Sas | Thermoacoustic device for internal combustion engine, has emission unit with gas conduit in which external sound waves travel when engine operates, and transmission unit transmitting sound waves inside resonator |
| CN200955474Y (en) * | 2006-09-05 | 2007-10-03 | 浙江大学 | Thermoacoustic engine adopting heat-pipe heat-conducting drive |
| CN101608847A (en) * | 2008-06-18 | 2009-12-23 | 深圳市中科力函热声技术工程研究中心有限公司 | The thermoacoustic refrigeration system that using waste heat from tail gas of internal combustion engine drives |
| CN201703227U (en) * | 2010-05-17 | 2011-01-12 | 苏州赛尔科凌空调有限公司 | Thermoacoustic refrigeration device of automobile |
-
2012
- 2012-02-01 CN CN201210022103.9A patent/CN102536709B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1592816A (en) * | 2001-11-26 | 2005-03-09 | 国际壳牌研究有限公司 | Thermoacoustic electric power generator |
| FR2890413A1 (en) * | 2005-09-06 | 2007-03-09 | Renault Sas | Thermoacoustic device for internal combustion engine, has emission unit with gas conduit in which external sound waves travel when engine operates, and transmission unit transmitting sound waves inside resonator |
| CN200955474Y (en) * | 2006-09-05 | 2007-10-03 | 浙江大学 | Thermoacoustic engine adopting heat-pipe heat-conducting drive |
| CN101608847A (en) * | 2008-06-18 | 2009-12-23 | 深圳市中科力函热声技术工程研究中心有限公司 | The thermoacoustic refrigeration system that using waste heat from tail gas of internal combustion engine drives |
| CN201703227U (en) * | 2010-05-17 | 2011-01-12 | 苏州赛尔科凌空调有限公司 | Thermoacoustic refrigeration device of automobile |
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| CN102536709A (en) | 2012-07-04 |
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Inventor after: Kang Huifang Inventor after: Xing Lele Inventor after: Wang Rui Inventor before: Kang Huifang Inventor before: Xing Lele |
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Free format text: CORRECT: INVENTOR; FROM: KANG HUIFANG XING LELE TO: KANG HUIFANG XING LELE WANG RUI |
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