CN105790638A - Multi-stage efficient coupling high temperature sensible heat-latent heat phase change energy storage thermoelectric power generation device - Google Patents
Multi-stage efficient coupling high temperature sensible heat-latent heat phase change energy storage thermoelectric power generation device Download PDFInfo
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- CN105790638A CN105790638A CN201610168017.7A CN201610168017A CN105790638A CN 105790638 A CN105790638 A CN 105790638A CN 201610168017 A CN201610168017 A CN 201610168017A CN 105790638 A CN105790638 A CN 105790638A
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- 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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
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Abstract
The invention discloses a multi-stage efficient coupling high temperature sensible heat-latent heat phase change energy storage thermoelectric power generation device, composed of a plurality of energy storage power generation units serially connected in a two-dimensional or three-dimensional space via connection tubes, wherein the energy storage power generation unit is formed by mutually and efficiently coupling an energy storage support body with thermoelectric batteries packaged on the outer side of the energy storage support body. Inorganic salt composite phase change heat energy storage material is filled and sealed in the phase change energy storage cabin of the inorganic salt/ceramic-based high temperature composite phase change energy storage support body, and the thermoelectric batteries are sealed between the inorganic salt/ceramic-based high temperature composite phase change energy storage support body and cooling fins. The inorganic salt/ceramic-based high temperature composite phase change energy storage support body is the inorganic salt composite phase change material infiltrated by a cellular ceramic-based support body. The system can efficiently recover waste heat in high temperature exhaust gas such as boiler exhaust gas and automobile exhaust gas, thus the utilization rate of fuel is improved, and emission of the harmful gas is reduced. The device can be widely applied to recovering the waste heat of high temperature industrial exhaust gas, automobile exhaust gas and the like.
Description
Technical field
The present invention relates to one and the heat energy of high-temp waste gas (boiler vapour, vehicle exhaust etc.) is converted into electric energy
Generation technology, i.e. multi-stage, efficient coupling high temperature sensible heat-latent heat phase-change accumulation energy temperature difference electricity generation device.
Background technology
21 century, human society is faced with the big crisis of global three: energy shortage, environmental pollution and life
State is destroyed, and increases year by year in particular with Global Auto recoverable amount so that transportation becomes energy resource consumption
Rich and influential family, energy resource consumption total amount accounts for about the 10% of whole society's energy resource consumption total amount.Along with the development of urbanization,
Energy demand will grow with each passing day.How to improve energy utilization rate, tap a new source of energy and would is that 21 century is complete
The theme of ball.Thermoelectric generation utilizes Seebeck (SeeBeck) effect, and heat energy is directly changed into electricity
The remarkable advantages such as energy, has simple in construction, it is not necessary to safeguard, movement-less part, environmental friendliness.Owing to being subject to
The restriction of material behavior, the generating efficiency ratio of thermoelectric cell is relatively low.The new and effective energy utilizes the TRT to be
Improve the main method of generating efficiency.Phase-change energy-storage composite material is a kind of hot functional composite material, it is possible to will
It is internal that energy is stored at it with the form of latent heat of phase change, it is achieved energy conversion between different space-time positions.
Phase-change material also becomes the external using energy source of recent year and material science aspect developmental research is the most active
Field.Inorganic salt/ceramic-base composite heat storage material belongs to the many empty dielectric materials of caking property, at energy field
In have important effect.Progress of Salt/Ceramic Composite Energy Storage Materials carries in the application of industry storage heater
For theoretical foundation.The latent heat of phase change utilizing phase-change material realizes storage and the utilization of energy, is favorably improved energy
Effect and exploitation regenerative resource.Efficient by inorganic salts ceramic base composite phase-change energy storage material and thermoelectric cell
Coupling, the present invention proposes the multistage coupling high temperature sensible heat-latent heat phase-change accumulation energy thermo-electric generation of a kind of new structure
Device.
Summary of the invention
The invention aims to make up the deficiencies in the prior art, it is provided that the multi-stage, efficient of a kind of new structure
Coupling high temperature sensible heat-latent heat phase-change accumulation energy temperature difference electricity generation device, this system can recycle high temperature efficiently and give up
Waste heat in gas (boiler waste gas, vehicle exhaust) generates electricity, and improves the utilization rate of fuel, and reduces
The exhaust method of pernicious gas.
In order to reach the purpose of the present invention, technical scheme is as follows:
A kind of multi-stage, efficient coupling high temperature sensible heat-latent heat phase-change accumulation energy temperature difference electricity generation device, it is characterised in that:
Concatenated and form by connecting tube in two dimension or three dimensions by a plurality of energy storing and electricity generating monomers, described energy storage
Generating monomer is by energy storage supporter and is packaged in the mutually efficiently coupling of the thermoelectric cell outside described energy storage supporter
It is combined into.Energy storing and electricity generating monomer can pass through U-tube connector at two and three dimensions according to required direction and quantity
Carry out tandem multi-stage coupling systems in space and dress up large-scale TRT.Energy storage supporter is inorganic salt/ceramic-base
High temperature composite phase change energy-storing supporter.
Further: described energy storage supporter has inner arc surface and exterior arc surface, described inner arc surface and cylindrical
Connect between cambered surface and have collecting plate, inside energy storage supporter, by inner arc surface, exterior arc surface and collecting plate
Defining several sector channels, a described sector channel part is exhaust steam passage, part loading energy storage material
Material forms fan-shaped phase-change accumulation energy storehouse, and exhaust steam passage and fan-shaped phase-change accumulation energy storehouse are arranged alternately.
Further: along the radial direction of energy storage supporter, to be additionally provided with use in the outside of each exhaust steam passage
In the second phase-change accumulation energy storehouse of loading energy storage material, described second phase-change accumulation energy storehouse and fan-shaped phase-change accumulation energy storehouse depend on
Secondary gang up.Mutually gang up between each energy storage storehouse, Temperature Distribution can be made evenly.
Preferably, described energy storage material is inorganic salts composite phase-change energy storage material.Inorganic salts height temperature composite phase change
Full energy storage storehouse filled by material, can increase the heat storage capacity of system, be combined for inorganic salt/ceramic-base high temperature simultaneously
Phase transformation supporter provides the inorganic salts high temperature composite phase-change material of infiltration.
Preferably, the cross section of described energy storage supporter is polygon, and the outer surface of each side is provided with one
For encapsulating and fix the cell package groove of thermoelectric cell, the surface of described thermoelectric cell is provided with fin.
Further: described thermoelectric cell comprises ceramic support sheet that two panels is parallel to each other and is positioned at two pieces of potteries
P-type semiconductor between porcelain support chip and N-type semiconductor, P-type semiconductor and N-type semiconductor are alternately arranged
Being connected in series, one of ceramic support sheet is thermoelectric cell hot junction, and described thermoelectric cell hot junction is propped up with energy storage
Support body contacts；Another block ceramic support sheet is the cold end of thermoelectric cell, and the cold end of described thermoelectric cell is with fin even
Connecing, ceramic support sheet is provided with the fixed groove for fixing P-type semiconductor and N-type semiconductor, p-type half
Being connected by baffle between conductor and N-type semiconductor, thermoelectric cell also includes exit, described exit
It is linked with external circuit.
Preferably, described thermoelectric cell both sides scribble heat conductive silica gel, and the gap between two pieces of ceramic support sheets is filled out
There is insulating heat insulating material.
Preferably, the surface of described collecting plate both sides being equipped with arc groove, the degree of depth of arc groove is less than
Arc groove in the half of collecting plate thickness, and collecting plate both side surface shifts to install.
Preferably, described energy storage material is inorganic salts composite phase-change energy storage material, and described high temperature composite phase change stores up
The phase transition temperature of energy material is 500-650 DEG C.
Preferably, the material of described P-type semiconductor and N-type semiconductor is thermoelectric material, described thermoelectric material
For AgSbTe2-GeTe solid solution.
Preferably, in described exhaust steam passage, the temperature of high-temp waste gas is 500-700 DEG C.
Thermoelectric cell both sides all scribble heat conductive silica gel, and cell panel contact surface is heated evenly, and increase cell panel with
The capacity of heat transmission of Cooling and Heat Source, make the hot junction of thermoelectric cell and energy storage supporter and cold end and fin it
Between be in close contact.
High-temp waste gas passage also directly contacts with thermal source.Collecting plate is connected group with interior-outer two arc surfaces respectively
Become close passage.Sector channel is alternately arranged according to exhaust steam passage-sector phase-change accumulation energy storehouse, fan-shaped phase transformation storage
Can directly contact with high-temp waste gas by storehouse collecting plate.The circular groove 7 of setting is had dislocation in collecting plate both side surface,
The most described collecting plate is corrugated, had both added the contact area of thermal-arrest substrate and high-temp waste gas, and had also ensured that
The intensity of housing.
Inorganic salt/ceramic-base high temperature composite phase change energy-storing supporter is the inorganic of many empty ceramic base supporter infiltrations
Salt composite phase-change material skeleton, due to capillary tension effect, does not flows in being retained in matrix after inorganic salts fusing
Out.Inorganic salt/ceramic-base high temperature composite phase change energy-storing supporter, both make use of the sensible heat of ceramic material to store up
Can, take full advantage of again the high hidden heat energy storage of inorganic salts composite phase-change material, the energy in high-temp waste gas is high
Effect recycles.
Thermoelectric material in thermoelectric cell may select filled-type drill with ferrule ore deposit structure C oSb3 based compound thermoelectricity material
Material, hoof lead (PbTe) base high-temperature thermoelectric material (600 DEG C) etc..The thermal source of thermoelectric cell is carried by energy storage device
Confession, low-temperature receiver is air.
The inorganic salts composite phase-change energy storage material that the present invention uses is high-temperature fusion salt phase-changing energy storage material:
Ni/Li2CO3, Na2CO3, K2CO3, BaCO3, NaNO3, Na2SO4 contour temperature composite phase change material, root
Compound preparation different composite phase-changing energy storage material is carried out according to different demands.Phase-change material is sealed in the second phase transformation
In energy storage storehouse and fan-shaped phase-change accumulation energy storehouse.Inorganic salt/ceramic-base composite phase-change energy storage material is in high temperature environments
Long-term work, in ceramic capillary, the inorganic salts of infiltration have part volatilization, and this fall can reduce the storage of composite
Can efficiency.The inorganic salts phase-change material stored in second phase-change accumulation energy storehouse and fan-shaped phase-change accumulation energy storehouse can be constantly
The inorganic salts phase-change material needed for infiltration is provided for ceramic base supporter.
The present invention utilizes the temperature difference between high-temp waste gas and the external world, is sent out by high-temperature phase-change energy storage material and the temperature difference
Power technology, is converted into electric energy by high-temp waste gas.When high-temp waste gas is by exhaust steam passage, collecting plate can absorb
Heat energy in high-temp waste gas, transfers heat to the composite phase-change material that is encapsulated in energy storage storehouse and brings it about
Phase transformation carries out accumulation of heat.The hot junction of thermoelectric cell is added H/C end by high-temperature tail gas and forms thermo-electric generation.Work as thermal source
Along with the reduction of temperature when cutting off, heat-storing material can undergo phase transition, and discharges its heat energy stored and makes thermoelectric cell
Hot junction and cold end continue to produce thermo-electric generation.U-shaped connecting pipe device makes high temperature waste hot preferably by energy storage device
Absorb, be also convenient for assembly and disassembly.
The present invention has the advantages such as efficient, stable, practical, convenient, can be widely used for hot industry waste gas,
The recovery profit of the used heat such as vehicle exhaust, the effective utilization rate improving fuel, reduces the discharge of pernicious gas.
Accompanying drawing explanation
Fig. 1 is the structure of multi-stage, efficient of the present invention coupling high temperature sensible heat-latent heat phase-change accumulation energy temperature difference electricity generation device
Schematic diagram；
Fig. 2 is the structural representation that energy storing and electricity generating monomer interconnects；
Fig. 3 is the structural representation of energy storing and electricity generating monomer in Fig. 2；
Fig. 4 is the structural representation of energy storage supporter in Fig. 3；
The cross section structure schematic diagram of Fig. 5 Fig. 4；
Fig. 6 is the structural representation of connecting tube；
Fig. 7 is the structural representation of thermoelectric cell.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described, but protection scope of the present invention is not only limited to
In embodiment.
As shown in Fig. 1-Fig. 7, a kind of multi-stage, efficient coupling high temperature sensible heat-latent heat phase-change accumulation energy thermo-electric generation dress
Put, a plurality of energy storing and electricity generating monomers 4 concatenated in two dimension or three dimensions by connecting tube 16 and form,
Described connecting tube 16 is U-tube.The both ends of energy storage bill monomer 4 are provided with connection boss 27, connect convex
Platform 27 is provided with supporter connecting screw hole 15, and the end of connecting tube is provided with connecting tube connecting screw hole 17, connects
Pipe connecting screw hole 17 and supporter connecting screw hole 15 one_to_one corresponding, U-shaped connecting tube is by screwing in supporter even
Connect the screw 18 in screw 15 to connect with being connected boss 27.Energy storing and electricity generating monomer 4 can be according to required direction
In two and three dimensions space, carry out tandem multi-stage coupling systems with quantity by U-tube connector and dress up large-scale
Electric installation.Described energy storing and electricity generating monomer 4 is by energy storage supporter 1 and is packaged in outside described energy storage supporter 1
Thermoelectric cell 2 mutual efficient coupling composition.Energy storage supporter 1 is inorganic salt/ceramic-base high temperature compound phase
Becoming energy storage supporter, have supporter shell 11 outside it, energy storage supporter 1 cross section is polygon, this reality
Executing example is regular hexagon.
Energy storage supporter 1 has inner arc surface 28 and exterior arc surface 29, described inner arc surface 28 and external arc
Connect between face 29 and have collecting plate 30, inside energy storage supporter 1, by inner arc surface 28, exterior arc surface
29 and collecting plate 30 define several Guan Bi sector channel, a described sector channel part be waste gas lead to
Road 10, a part load energy storage material 12 and form fan-shaped phase-change accumulation energy storehouse 9, and exhaust steam passage 10 and fan
Shape phase-change accumulation energy storehouse 9 is arranged alternately.Along the radial direction of energy storage supporter 1, at each exhaust steam passage 10
Outside be additionally provided with the second phase-change accumulation energy storehouse 8 for loading energy storage material 12, described second phase-change accumulation energy
Storehouse 8 and fan-shaped phase-change accumulation energy storehouse 9 are ganged up successively by feed bin interface channel 14.Described energy storage material 12 is
Inorganic salts composite phase-change energy storage material, phase transition temperature is 500-650 DEG C, and the present embodiment is Ni/Li2CO3.Useless
In gas passage 10, the temperature of high-temp waste gas is 500-700 DEG C.
The outer surface of each side of energy storage supporter 1 is provided with one for encapsulating and fix thermoelectric cell 2
Cell package groove 5, cell package groove 5 is actually provided on supporter shell 11, thermoelectric cell
Surface is provided with fin 3, and thermoelectric cell 2 is sealed by screw 6 and is fixed on cell package by fin 3
In groove 5.
Described thermoelectric cell 2 comprises ceramic support sheet that two panels is parallel to each other and is positioned at two pieces of ceramic support
P-type semiconductor 22 between sheet and N-type semiconductor 21, P-type semiconductor 22 and N-type semiconductor 21 are handed over
Being connected in series for arrangement, one of ceramic support sheet is thermoelectric cell hot junction 19, described thermoelectric cell hot junction
19 contact with energy storage supporter 1；Another block ceramic support sheet is the cold end of thermoelectric cell 25, described thermoelectric
Chi Leng end 25 is connected with fin 3, and ceramic support sheet is provided with for fixing P-type semiconductor 22 and N-type
The fixed groove 24 of semiconductor 21, by baffle 20 between P-type semiconductor 22 and N-type semiconductor 21
Connecting, thermoelectric cell 2 also includes that exit 23, exit 23 are linked with external circuit.
Thermoelectric cell 2 both sides scribble heat conductive silica gel, and cell panel contact surface is heated evenly, and increase cell panel with
The capacity of heat transmission of Cooling and Heat Source, makes hot junction and energy storage supporter 1, cold end and the fin 3 of thermoelectric cell 2
It is in close contact.Gap between two pieces of ceramic support sheets is filled with insulating heat insulating material, improves heat insulation effect,
Heat is avoided to scatter and disappear.
Being equipped with arc groove 7 on the surface of described collecting plate 30 both sides, the degree of depth of arc groove is less than thermal-arrest
Arc groove 7 in the half of plate thickness, and collecting plate 30 both side surface shifts to install.In this enforcement
In example, the degree of depth of arc groove, i.e. radius are just the half of collecting plate thickness, and therefore the circular arc of both sides is recessed
Groove must shift to install.
Thermoelectric material in thermoelectric cell may select filled-type drill with ferrule ore deposit structure C oSb3 based compound thermoelectricity material
Material, hoof lead (PbTe) base high-temperature thermoelectric material (600 DEG C) etc..The thermal source of thermoelectric cell is carried by energy storage device
Confession, low-temperature receiver is air.In the present embodiment, the thermoelectricity that P-type semiconductor 22 and N-type semiconductor 21 use
Material is AgSbTe2-GeTe solid solution.
Last it is noted that above example only in order to the present invention is described and and unrestricted described in the invention
Technical scheme, therefore, although this specification with reference to each above-mentioned embodiment to present invention has been in detail
Thin explanation, but, it will be understood by those within the art that, still the present invention can be repaiied
Changing or equivalent, and all are without departing from the technical scheme of the spirit and scope of the present invention and improvement thereof, it is equal
Should contain in scope of the presently claimed invention.
Claims (10)
1. multi-stage, efficient coupling high temperature sensible heat-latent heat phase-change accumulation energy temperature difference electricity generation device, it is characterised in that:
Concatenated and form by connecting tube in two dimension or three dimensions by a plurality of energy storing and electricity generating monomers (4), described
Energy storing and electricity generating monomer (4) is by energy storage supporter (1) and is packaged in the thermoelectric outside described energy storage supporter
Pond (2) mutually efficient coupling composition.
Multi-stage, efficient the most according to claim 1 coupling high temperature sensible heat-latent heat phase-change accumulation energy thermo-electric generation
Device, it is characterised in that: described energy storage supporter has inner arc surface (28) and exterior arc surface (29), institute
State to connect between inner arc surface and exterior arc surface and have collecting plate (30), inside energy storage supporter, by Inner arc
Face, exterior arc surface and collecting plate define several sector channels, and a described sector channel part is that waste gas leads to
Road (10), a part load energy storage material and form fan-shaped phase-change accumulation energy storehouse (9), and exhaust steam passage and sector
Phase-change accumulation energy storehouse is arranged alternately.
Multi-stage, efficient the most according to claim 2 coupling high temperature sensible heat-latent heat phase-change accumulation energy thermo-electric generation
Device, it is characterised in that: along the radial direction of energy storage supporter, outside each exhaust steam passage (10)
Side is additionally provided with the second phase-change accumulation energy storehouse (8) for loading energy storage material, described second phase-change accumulation energy storehouse (8)
Gang up successively with fan-shaped phase-change accumulation energy storehouse (9).
Multi-stage, efficient the most according to claim 1 coupling high temperature sensible heat-latent heat phase-change accumulation energy thermo-electric generation
Device, it is characterised in that: the cross section of described energy storage supporter is polygon, and the outer surface of each side is arranged
Have one for the cell package groove (5) encapsulating and fixing thermoelectric cell, the surface of described thermoelectric cell sets
There is fin (3).
Multi-stage, efficient the most according to claim 4 coupling high temperature sensible heat-latent heat phase-change accumulation energy thermo-electric generation
Device, it is characterised in that: described thermoelectric cell comprises ceramic support sheet that two panels is parallel to each other and is positioned at
P-type semiconductor (22) between two pieces of ceramic support sheets and N-type semiconductor (21), P-type semiconductor (22)
Alternately arranged with N-type semiconductor (21) being connected in series, one of ceramic support sheet is thermoelectric cell hot junction
(19), described thermoelectric cell hot junction contacts with energy storage supporter；Another block ceramic support sheet is that thermoelectric cell is cold
End (25), the cold end of described thermoelectric cell is connected with fin, and ceramic support sheet is provided with for fixing p-type half
The fixed groove (24) of conductor (22) and N-type semiconductor (21), P-type semiconductor (22) and N-type half
Between conductor (21) by baffle (20) connect, thermoelectric cell also includes exit (23), described in draw
Go out end to be linked with external circuit.
Multi-stage, efficient the most according to claim 5 coupling high temperature sensible heat-latent heat phase-change accumulation energy thermo-electric generation
Device, it is characterised in that: described thermoelectric cell both sides scribble heat conductive silica gel, between two pieces of ceramic support sheets
Gap is filled with insulating heat insulating material.
Multi-stage, efficient the most according to claim 2 coupling high temperature sensible heat-latent heat phase-change accumulation energy thermo-electric generation
Device, it is characterised in that: it is equipped with arc groove (7), arc groove on the surface of described collecting plate both sides
The degree of depth less than the half of collecting plate thickness, and the arc groove in collecting plate both side surface shifts to install.
8. couple high temperature sensible heat-latent heat phase-change accumulation energy temperature difference according to the multi-stage, efficient described in Claims 2 or 3
TRT, it is characterised in that: described energy storage material is inorganic salts composite phase-change energy storage material, described high temperature
The phase transition temperature of composite phase-change energy storage material is 500-650 DEG C.
Multi-stage, efficient the most according to claim 5 coupling high temperature sensible heat-latent heat phase-change accumulation energy thermo-electric generation
Device, it is characterised in that: the material of described P-type semiconductor (22) and N-type semiconductor (21) is thermoelectricity
Material, described thermoelectric material is AgSbTe2-GeTe solid solution.
Multi-stage, efficient the most according to claim 5 coupling high temperature sensible heat-latent heat phase-change accumulation energy thermo-electric generation
Device, it is characterised in that: in described exhaust steam passage (10), the temperature of high-temp waste gas is 500-700 DEG C.
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| CN106253751A (en) * | 2016-08-09 | 2016-12-21 | 浙江科技学院 | Biomass fuel thermal generator |
| CN108832848A (en) * | 2018-07-18 | 2018-11-16 | 武汉理工大学 | A kind of portable miniaturization thermoelectric generator |
| CN110112958A (en) * | 2019-05-24 | 2019-08-09 | 西安交通大学 | The bionical fin-type residual heat of tail gas of automobile cascaded power generating system of phase transformation coupling |
| CN111917337A (en) * | 2020-06-29 | 2020-11-10 | 天津商业大学 | Thermoelectric power generation device utilizing thermochemical reaction |
| CN111917336A (en) * | 2020-06-29 | 2020-11-10 | 天津商业大学 | Thermoelectric material semiconductor characteristic-based non-uniform reinforced fin thermoelectric generator |
| CN112600463A (en) * | 2020-12-05 | 2021-04-02 | 西安交通大学 | Heat collection power generation module with bulk phase structure |
| WO2022095008A1 (en) * | 2020-11-09 | 2022-05-12 | 常州机电职业技术学院 | Waste heat recycling device for automobile exhaust system and recycling method |
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| CN108832848A (en) * | 2018-07-18 | 2018-11-16 | 武汉理工大学 | A kind of portable miniaturization thermoelectric generator |
| CN110112958A (en) * | 2019-05-24 | 2019-08-09 | 西安交通大学 | The bionical fin-type residual heat of tail gas of automobile cascaded power generating system of phase transformation coupling |
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| WO2022095008A1 (en) * | 2020-11-09 | 2022-05-12 | 常州机电职业技术学院 | Waste heat recycling device for automobile exhaust system and recycling method |
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