CN106368916A - Annular serial enhanced waste-heat power generation device and method based on thermoacoustic effect - Google Patents
Annular serial enhanced waste-heat power generation device and method based on thermoacoustic effect Download PDFInfo
- Publication number
- CN106368916A CN106368916A CN201610937532.7A CN201610937532A CN106368916A CN 106368916 A CN106368916 A CN 106368916A CN 201610937532 A CN201610937532 A CN 201610937532A CN 106368916 A CN106368916 A CN 106368916A
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- Prior art keywords
- heat recovery
- waste heat
- heat
- power generation
- acoustic
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/002—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using the energy of vibration of fluid columns
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses an annular serial enhanced waste-heat power generation device and method based on the thermoacoustic effect. The annular serial enhanced waste-heat power generation device based on the thermoacoustic effect comprises a waste heat recovery tube and a heat-sound-electricity converter. The heat-sound-electricity converter is composed of a plurality of converting units. Each converting unit is composed of a speed-up tube, a regenerator and an acoustic-electric generator. The bottom of the waste heat recovery tube is arranged on a heat source, heat flow passes through the waste heat recovery tube, the density of the heat flow is increased under the effect of contraction of the tube, and internal working media of the heat-sound-electricity converter are heated accordingly; and the working media move after being heated and contract in the speed-up tube, the speed is increased, the energy density is increased, heat-sound converting occurs in the regenerator, sound waves are generated, and the sound waves emitted by the regenerator drive the acoustic-electric generator to generate electric energy. According to the annular serial enhanced waste-heat power generation device, the requirement for the waste heat quality is low, the converting efficiency is high, motion parts do not exist, the structure is compact, the performance is stable, adopted materials are economic, the machining difficulty is low, and the cost is low; and the annular serial enhanced waste-heat power generation device and method based on the thermoacoustic effect are suitable for all types of waste heat recovery occasions, and application and popularization are easy.
Description
Technical field
The present invention relates to the Waste Heat Recovery technical field based on thermoacoustic effect；A kind of specifically related to ring based on thermoacoustic effect
Shape serial strengthens waste heat recovery power generation and method.
Background technology
Global energy supply in, using the Fossil fuels such as oil, natural gas, coal burning come pushing generator generate electricity or
The traditional energy supply that person pushes directly on internal combustion engine generation power is still major part therein in today；Fossil fuel utilizes
Exemplary situations such as steam power plant, car combustion engine etc., all only some can be converted into needed for us the energy that fuel contains
The electric energy wanted or mechanical energy, and sizable part energy be dissipated in the form of the heat in transformation process around ring
In border；Such energy dissipation one side reduces the utilization rate of Fossil fuel, and accelerate Fossil fuel exhausts speed and combustion
The discharge of pollutant in material use, this is undoubtedly pendulum complete in fossil energy increasingly exhausted today being on the rise with environmental problem
A difficult problem in face of the mankind.Solar energy, as a kind of novel energy, is increasingly subject to people's attention, but current solar energy
During volt generates electricity, photovoltaic cell heating remains a thorny problem, and photovoltaic cell heating has seriously undermined photoelectric transformation efficiency, fall
Low capacity usage ratio and energy density.
In above-mentioned occasion, the heat of dissipation is also the energy, but its hot quality low it is difficult to effectively utilizes.Scientific and technical people
Member is devoted to the Waste Heat Recovery problem of steam power plant, internal combustion engine etc. for a long time always it is proposed that certain methods, such as utilizes used heat
Heated, carried out used heat turbocharging or using used heat promotion turbine generation etc. using waste heat of internal combustion engine.These technology
Improve capacity usage ratio to a certain extent, but still face problems.For example utilize used heat heating can only play in winter
Effect, used heat turbocharging is difficult to mate with the full working scope of electromotor, needs accumulator process auxiliary drive, used heat turbine generation
Then exhaust back pressure may be improved, electromotor is had a negative impact.
Content of the invention
In order to overcome the shortcoming of above-mentioned prior art, it is an object of the invention to provide a kind of ring-type based on thermoacoustic effect
Serial strengthens waste heat recovery power generation and method, and this device is low to used heat quality requirements, and the temperature difference is from hundreds of degrees Celsius to as little as
70 degrees Celsius all can efficient recovery；Heat recovery efficiency is high, and the thermal efficiency can big more than 40%；Range is wide, can be applicable to thermoelectricity
The various fields such as factory, automobile engine, dynamic power machine internal combustion engine, photovoltaic array, used heat is converted to electric energy, can be supplied to multiple electric power
Demand；Structure is simple, movement-less part, and device stability is good, long service life, suitable large-scale promotion application.
In order to achieve the above object, the technical scheme that the present invention takes is:
A kind of ring-type serial based on thermoacoustic effect strengthens waste heat recovery power generation, includes Waste Heat Recovery pipe 1 and is placed in
Heat-the acoustic-electric converter 2 at Waste Heat Recovery pipe 1 top；Described Waste Heat Recovery pipe 1 is shaped as contracting nozzle or Laval nozzle,
Its bottom is open or closed, and top is closing or semiclosed；Described heat-acoustic-electric converter 2 is multiple converting units 3
The serial loop constituting, next converting unit 3 inlet side is accessed in each converting unit 3 outlet side, and internal working medium is pressure
Contracting air or compressed nitrogen.
Described converting unit 3 is made up of the velocity hooster 4 being sequentially connected, regenerator 5 harmony electric generator 6, velocity hooster 4 bottom
Portion and Waste Heat Recovery pipe 1 top contact.
Described velocity hooster 4 is shaped as contracting nozzle or Laval nozzle, and material is steel, pottery, plastics or glass.
Described regenerator 5 is Multilayer Structure 5-1, thin Pipe bundle structure 5-2 or multi-layer sheet and tubule bundle integrated structure 5-
3, material is steel, pottery, plastics or glass.
Described acoustic-electric electromotor 6 is made up of multiple fan-like pattern electric motor units 7, and fan-like pattern electric motor units 7 are piezoelectric membrane,
Material is mono-crystalline piezoelectric materials, piezoelectric ceramics or organic piezoelectric materials.
The material of described Waste Heat Recovery pipe 1 is steel, pottery, plastics or glass.
The quantity of described converting unit 3 is four.
A kind of described ring-type serial based on thermoacoustic effect strengthens the electricity-generating method of waste heat recovery power generation, by used heat
Recovery tube 1 bottom is placed at thermal source, and hot-fluid passes through Waste Heat Recovery pipe 1, and due to this pipe astriction, heat flow density is increased,
And heating heat-acoustic-electric converter 2 internal working medium, working medium is heated movement, volume contraction in velocity hooster 4, and speed increases, energy
Density increases, and then at regenerator 5, Sonic heat changing occurs, and produces traveling wave sound wave, the sound wave driving sound being sent by regenerator 5
Electric generator 6 produces electric energy；This device heats the complete loops that heat-acoustic-electric converter 2 is that multiple converting units 3 are constituted, internal
Working medium produces constant wave vibration at work, promotes acoustic-electric electromotor by the sound wave that regenerator 5 cold end sends in each converting unit 3
Enter the velocity hooster 4 of the next converting unit 3 being connected with this converting unit 3 after 6, improve in velocity hooster 4 working medium density and
Energy density；This device jet pipe form Waste Heat Recovery pipe 1, the heat-acoustic-electric converter 2 in serial loop and being designed with of velocity hooster 4
Effect improves the conversion efficiency of whole waste heat recovery power generation.
Advantages of the present invention is as follows:
(1) this device makes full use of the energy density castering action of used heat collecting pipe 1 and velocity hooster 4, will to used heat quality
Ask low, all can efficient recovery with the used heat from hundreds of degrees Celsius to as little as 70 degrees Celsius for the circumstance of temperature difference.
(2) the serial loop heat-acoustic-electric converter 2 of this device effectively improves heat recovery efficiency, the thermal efficiency up to
More than 40%.
(3) this device range is wide, can be applicable to steam power plant, automobile engine, dynamic power machine internal combustion engine, photovoltaic array
Deng various field, used heat is converted to electric energy, can be supplied to multiple electricity needs.
(4) this apparatus structure is simple, movement-less part, and device stability is good, long service life, and suitable large-scale promotion should
With.
Brief description
Fig. 1 is apparatus of the present invention structural representation.
Fig. 2 is apparatus of the present invention structure schematic top plan view.
Fig. 3 is converting unit schematic diagram.
Fig. 4 is regenerator structure schematic diagram, and wherein Fig. 4 a is Multilayer Structure, and wherein Fig. 4 b is thin Pipe bundle structure, wherein
Fig. 4 c is multi-layer sheet and tubule bundle integrated structure.
Fig. 5 is acoustic-electric electromotor schematic diagram.
Fig. 6 is acoustic-electric generator operation schematic diagram.
Fig. 7 is this device application schematic diagram.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in detail.
With reference to Fig. 1, this device is made up of two big parts, and one is Waste Heat Recovery pipe 1, and two are mounted in Waste Heat Recovery pipe 1 pushes up
Portion's heat-acoustic-electric converter 2.The bottom of Waste Heat Recovery pipe 1 can be for open or closed to be suitable for different application scenarios:
Used heat predominantly to streamed when, using the open used heat collecting pipe in bottom, more can effectively collect heat；Used heat is mainly hot spoke
When penetrating form, using the used heat collecting pipe of bottom lock, more can effectively collect heat.Waste Heat Recovery pipe 1 top be semiclosed or
Closing form, to adapt to different application scenarios and bottom form.
With reference to Fig. 2 and Fig. 3, the heat-acoustic-electric converter 2 being arranged on Waste Heat Recovery pipe 1 top is 4 converting units 3 head and the tail
The complete loops of the composition that connects.Each converting unit 3 is made up of velocity hooster 4, regenerator 5 harmony electric generator 6.Each conversion is single
Velocity hooster 4 bottom of unit 3 and Waste Heat Recovery pipe 1 top contact, the working medium in velocity hooster 4 is added by the hot-fluid in Waste Heat Recovery pipe 1
Heat, flows to regenerator 5 by the speed-raising effect of velocity hooster 4, Sonic heat changing occurs herein, the sound wave that regenerator 5 produces promotes
Acoustic-electric electromotor 6 produces electric energy.Working medium is in entirely heat-acoustic-electric converter 2 with constant wave vibration transmission energy.
With reference to Fig. 4, regenerator 5 is Multilayer Structure 5-1, thin Pipe bundle structure 5-2 or multi-layer sheet and tubule binding closes knot
Structure 5-3.
With reference to Fig. 5 and Fig. 6, acoustic-electric electromotor 6 is made up of fan-like pattern electric motor units 7.Fan-like pattern electric motor units 7 are piezoresistive material
Material thin film, during by acoustic wave action, fan-like pattern electric motor units 7 occur bending and deformation, and its upper and lower surface produces xenogenesis electric charge respectively,
Thus forming electric potential difference between top and bottom, can externally transmit electricity.
With reference to Fig. 7, the basic application mode of this device drives this device to produce multiple power supplies output for used heat thermal source, by electricity
Source control device carries out electrical management distribution, thus driving load work.
Operation principle of the present invention is:
Operation principle of the present invention is divided into two parts, first thermoacoustic effect, and it two is acoustic-electric conversion.Thermoacoustic effect principle is
Compressible fluid medium expands when being heated and displacement, with the solid wall of heat exchanger, heat effect occurs, thus producing vibration
Sound wave, it is the direct conversion of heat energy and orderly acoustic energy, that is, realize heat energy to the conversion of mechanical energy.In the present invention, acoustic-electric is changed is
Drive piezoelectric membrane deformation using acoustic energy, the piezoelectric effect using piezoelectric membrane produces electric energy, realize mechanical energy turning to electric energy
Change.
Claims (8)
1. a kind of ring-type serial based on thermoacoustic effect strengthen waste heat recovery power generation it is characterised in that: include Waste Heat Recovery
Pipe (1) and the heat-acoustic-electric converter (2) being placed in Waste Heat Recovery pipe (1) top；Described Waste Heat Recovery pipe (1) is shaped as restraining
Jet pipe or Laval nozzle, its bottom is open or closed, and top is closing or semiclosed；Described heat-acoustic-electric converter
(2) the serial loop constituting for multiple converting units (3), next converting unit entrance is accessed in each converting unit outlet side
Side, internal working medium is compressed air or compressed nitrogen.
2. a kind of ring-type serial based on thermoacoustic effect according to claims 1 strengthens waste heat recovery power generation, its
It is characterised by: described converting unit (3) is made up of the velocity hooster (4) being sequentially connected, regenerator (5) harmony electric generator (6),
Velocity hooster (4) bottom and Waste Heat Recovery pipe (1) top contact.
3. a kind of ring-type serial based on thermoacoustic effect according to claims 2 strengthens waste heat recovery power generation, its
It is characterised by: described velocity hooster (4) is shaped as contracting nozzle or Laval nozzle, material is steel, pottery, plastics or glass
Glass.
4. a kind of ring-type serial based on thermoacoustic effect according to claims 2 strengthens waste heat recovery power generation, its
It is characterised by: described regenerator (5) is Multilayer Structure (5-1), thin Pipe bundle structure (5-2) or multi-layer sheet and tubule binding is closed
Structure (5-3), material is steel, pottery, plastics or glass.
5. the converting unit according to claims 2 (3) it is characterised in that: described acoustic-electric electromotor (6) is by multiple fans
Face shape electric motor units (7) constitute, fan-like pattern electric motor units (7) be piezoelectric membrane, material be mono-crystalline piezoelectric materials, piezoelectric ceramics or
Organic piezoelectric materials.
6. a kind of ring-type serial based on thermoacoustic effect according to claim 1 strengthens waste heat recovery power generation, and it is special
Levy and be: the material of described Waste Heat Recovery pipe (1) is steel, pottery, plastics or glass.
7. a kind of ring-type serial based on thermoacoustic effect according to claim 1 strengthens waste heat recovery power generation, and it is special
Levy and be: the quantity of described converting unit (3) is four.
8. a kind of ring-type serial based on thermoacoustic effect described in claim 2 strengthens the generating side of waste heat recovery power generation
Method it is characterised in that: Waste Heat Recovery pipe (1) bottom is placed at thermal source, hot-fluid pass through Waste Heat Recovery pipe (1), due to this pipe receive
Hold back effect, heat flow density is increased, and heat heat-acoustic-electric converter (2) internal working medium, working medium is heated movement, in velocity hooster
(4) volume contraction in, speed increases, and energy density increases, and then at regenerator (5) place, Sonic heat changing occurs, and produces traveling wave
Sound wave, drives acoustic-electric electromotor (6) to produce electric energy by the sound wave that regenerator (5) sends；This device heats heat-acoustic-electric converter
(2) complete loops constituting for multiple converting units (3), internal working medium produces constant wave vibration at work, each converting unit
(3) sound wave promotion acoustic-electric electromotor (6) being sent by regenerator (5) cold end in is entered under being connected with this converting unit (3) afterwards
The velocity hooster (4) of one converting unit (3), improves working medium density and energy density in velocity hooster (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610937532.7A CN106368916A (en) | 2016-11-01 | 2016-11-01 | Annular serial enhanced waste-heat power generation device and method based on thermoacoustic effect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610937532.7A CN106368916A (en) | 2016-11-01 | 2016-11-01 | Annular serial enhanced waste-heat power generation device and method based on thermoacoustic effect |
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| CN106368916A true CN106368916A (en) | 2017-02-01 |
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| CN201610937532.7A Pending CN106368916A (en) | 2016-11-01 | 2016-11-01 | Annular serial enhanced waste-heat power generation device and method based on thermoacoustic effect |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339915A (en) * | 2018-12-07 | 2019-02-15 | 哈尔滨工程大学 | A kind of engine tail gas waste-heat power generator |
| CN109441638A (en) * | 2018-11-12 | 2019-03-08 | 陈铭通 | Aeroengine Altitude Test-bench energy absorption and conversion equipment |
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| CN1137630A (en) * | 1995-06-05 | 1996-12-11 | 中国科学院低温技术实验中心 | Heat driven thermoacoustic refrigerator without motion component |
| CN101539125A (en) * | 2008-03-18 | 2009-09-23 | 深圳市中科力函热声技术工程研究中心有限公司 | Solar thermoacoustic rotary power generator |
| EP2534357A2 (en) * | 2010-02-10 | 2012-12-19 | Hekyom | Thermoacoustic machine having an electric feedback loop |
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| CN104912690A (en) * | 2015-04-10 | 2015-09-16 | 中国科学院理化技术研究所 | Acoustic resonance multistage travelling-wave thermoacoustic engine coupled piezoelectric ceramic power generation system |
| CN105391345A (en) * | 2015-12-30 | 2016-03-09 | 南京理工大学 | Fluid power sound source excitation method of piezoelectric generator |
| WO2016091900A1 (en) * | 2014-12-08 | 2016-06-16 | Stichting Energieonderzoek Centrum Nederland | Thermo-acoustic heat pump |
| CN105698430A (en) * | 2016-02-03 | 2016-06-22 | 同济大学 | Thermoacoustic refrigerating system and application thereof |
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2016
- 2016-11-01 CN CN201610937532.7A patent/CN106368916A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1137630A (en) * | 1995-06-05 | 1996-12-11 | 中国科学院低温技术实验中心 | Heat driven thermoacoustic refrigerator without motion component |
| CN101539125A (en) * | 2008-03-18 | 2009-09-23 | 深圳市中科力函热声技术工程研究中心有限公司 | Solar thermoacoustic rotary power generator |
| EP2534357A2 (en) * | 2010-02-10 | 2012-12-19 | Hekyom | Thermoacoustic machine having an electric feedback loop |
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| CN104912690A (en) * | 2015-04-10 | 2015-09-16 | 中国科学院理化技术研究所 | Acoustic resonance multistage travelling-wave thermoacoustic engine coupled piezoelectric ceramic power generation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441638A (en) * | 2018-11-12 | 2019-03-08 | 陈铭通 | Aeroengine Altitude Test-bench energy absorption and conversion equipment |
| CN109339915A (en) * | 2018-12-07 | 2019-02-15 | 哈尔滨工程大学 | A kind of engine tail gas waste-heat power generator |
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Application publication date: 20170201 |