CN106150629B - A kind of system improving thermopower generation efficiency using phase-change material heat storage function - Google Patents
A kind of system improving thermopower generation efficiency using phase-change material heat storage function Download PDFInfo
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- CN106150629B CN106150629B CN201610505846.XA CN201610505846A CN106150629B CN 106150629 B CN106150629 B CN 106150629B CN 201610505846 A CN201610505846 A CN 201610505846A CN 106150629 B CN106150629 B CN 106150629B
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- 238000005338 heat storage Methods 0.000 title claims abstract description 15
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- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
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- 229930195725 Mannitol Natural products 0.000 description 4
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- 239000007789 gas Substances 0.000 description 4
- 239000000594 mannitol Substances 0.000 description 4
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
- F01N5/025—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat the device being thermoelectric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
-
- 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
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
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- Combustion & Propulsion (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The present invention relates to a kind of systems for improving thermopower generation efficiency using phase-change material heat storage function, comprising: energy storage device, heat-exchange device and thermo-electric device containing phase-change material.Thermo-electric device is to be made of p-type and N-shaped thermoelectric material.The energy storage device containing phase-change material that the heat that can have little time thermo-electric device to convert stores is between thermo-electric device and heat-exchange device.The present invention is conducive to improve the utilization rate of various unstable heat sources, while additionally aiding the power generation stability for keeping thermoelectric heat generation system.The present invention is conducive to hinder the transmitting of heat thermoelectric device cold end, extends the time for keeping certain temperature difference between cold and hot end, improve waste heat utilization due to the presence of heat-insulating heat-preserving material and air barrier.The present invention is different according to heat source totality heat flow, chooses different thermoelectric heat generation system structures, advantageously reduces phase-change material bring interface resistance, makes full use of waste heat, improves conversion efficiency of thermoelectric.
Description
Technical field
The present invention relates to a kind of systems for improving thermopower generation efficiency, and in particular to a kind of to utilize phase-change material heat accumulation function
Can, alleviate the mismatch between heat demand and supply, the system for improving thermoelectric heat generation system efficiency.
Background technique
With being significantly increased of demand for energy, the sharply reduction of fossil energy and environmental problem increasingly sharpen, actively
Seeking new energy and new energy utilization patterns becomes the research hotspot of global concern.In numerous new energy use technologies, heat
Electricity power generation have apparatus structure it is simple, without mechanical transmission component, small in size, long service life, high reliablity, without operating noise,
Advantages of environment protection, the fields such as Waste Heat Reuse receive great attention more than solar energy, waste heat of automotive exhaust gas and the industry, be expected to for
Improve the dirty emission reduction of energy utilization rate, drop, alleviation environmental problem provides a kind of new approach.
Thermoelectric power generation is the pyroelectric effect using thermoelectric material, carries out transporting for energy by carrier (electrons)
Realize the conversion between thermal energy and electric energy.The performance indicator of thermoelectric material generally uses the dimensionless figure of merit (figure of merit)
ZT is described, and ZT is determined by the Seebeck coefficient S of thermoelectric material, conductivityσ, thermal conductivity k and absolute temperature T, expression formula
For ZT=S2σ T/k, wherein S2σ is known as power factor.Currently, the figure of merit of the thermoelectric material commercially used is generally lower,
Cause the efficiency of thermo-electric device far below conventional mechanical cycle efficieny, so that being able to carry out the energy of conversion in the unit time has
Limit.Although the thermoelectric heat generation system structure and material of each mechanism exploitation is had nothing in common with each other at present, its overall structure can be summarized as Fig. 1
Shown in configuration.More than vehicle exhaust or industry the heat sources such as waste heat through collecting system carry out heat collection after, thermoelectric heat generation system
Hot end and cold end are in close contact with the smooth surface of collecting system and cooling system respectively, provide thermo-electric device certain temperature difference.By
In thermoelectric heat generation system extensive commercial at present hot end continuous work temperature generally at 300 DEG C hereinafter, therefore, in thermal-arrest system
Other control systems such as tee tube and solenoid valve are arranged between system and thermoelectric heat generation system.By the switch control of solenoid valve,
The heat flow adjusted into thermoelectric heat generation system heat exchanger causes it with preventing the hot-side temperature of thermoelectric heat generation system excessively high
Permanent damage.Meanwhile waste heat of automotive exhaust gas and other various residual heat resources generally all have following common feature, that is, there is week
Phase property, discontinuity or fluctuation cause heating load unstable.Automobile engine operation conditions, different road conditions and weather, industry
Remaining waste heat, which generates operating condition variation etc., will all will affect thermo-electric device hot end heat flow.If by heat flow maximum value design thermoelectricity hair
Electric system will cause the waste of raw material, thus set generally according to certain weighted average to generating capacity in design
Meter, to reach maximizing the benefits.By taking vehicle exhaust is applied as an example, when the engine is running, waste heat is to thermoelectric heat generation system hot end
It is heated, generates the temperature difference to drive thermoelectric heat generation system to generate electricity；And automobile engine it is out of service when, due to not giving up
Heat, thermoelectric heat generation system stop power generation.Simultaneously as conversion efficiency of thermoelectric is also relatively low, engine generates big when operating
Amount waste heat cannot be totally converted, and extra heat passes through heat flow control system direct emission.Therefore, waste heat of automotive exhaust gas and work
There is apparent mismatch in amateurish waste heat and thermoelectric heat generation system, be not possible to reach the effective use to waste heat.
In addition, the latent heat energy storage based on phase-change material has energy storage density high, can be stored in stationary temperature and
The features such as discharging thermal energy is usually used in alleviating mismatch of the energy supply and demand both sides on time, intensity and place, in the benefit of solar energy
With, " peak load shifting " of electric power, the recycling of gas waste heat and waste heat, industry has with fields such as civil buildings and air conditioner energy savings
Broad application prospect is the research hotspot within the scope of our times.Thermal energy storage technology based on energy storage material is expected to solve
Mismatch between heat demand and supply.
Summary of the invention
In view of the above-mentioned problems, utilizing phase-change material heat storage function the main purpose of the present invention is to provide a kind of, alleviate heat
Mismatch between amount demand and supply, the system for improving thermoelectric heat generation system efficiency.
The present invention is to solve above-mentioned technical problem by following technical proposals: a kind of to utilize phase-change material heat storage function
The system for improving thermopower generation efficiency, the system for improving thermopower generation efficiency using phase-change material heat storage function includes: to contain
Energy storage device, heat-exchange device and the thermo-electric device of phase-change material, the heat that thermo-electric device can be had little time to conversion store
The energy storage device containing phase-change material come is between thermo-electric device and heat-exchange device.
In a specific embodiment of the present invention, the thermo-electric device is made of p-type and N-shaped thermoelectric material.
In a specific embodiment of the present invention, the system also includes cold source heat exchanger, the energy storage device containing phase-change material
It is mounted between heat-exchange device and thermo-electric device, thermo-electric device is mounted on energy storage device and cold source heat exchanger containing phase-change material
Between.
In a specific embodiment of the present invention, the system also includes cold source heat exchanger, the hot end of thermo-electric device and heat are handed over
Changing device connects, the energy storage device containing phase-change material in the hot end of thermo-electric device near hotter side electrode, containing phase-change material
It is isolated between energy storage device and the hot end of thermo-electric device with layer of insulation material.
In a specific embodiment of the present invention, heat insulating material is used between the thermo-electric device surrounding and thermo-electric device thermoelectric arm
Material package.
In a specific embodiment of the present invention, the thermo-electric device interior insulating material is close to thermo-electric device cold end 1/6-
Air barrier is placed at 1/2.
In a specific embodiment of the present invention, the thermo-electric device interior insulating material is at thermo-electric device cold end 1/3
Place air barrier.
In a specific embodiment of the present invention, the phase-change material includes inorganic phase-change material, metal or alloy class phase
Become material, organic phase-change material, composite phase-change material, modified phase-change material.
In a specific embodiment of the present invention, the inorganic phase-change material has crystalline hydrate salt, in molten salts
One or more of mixtures；The organic phase-change material is the mixture of one or more of paraffin or acetic acid.
The positive effect of the present invention is that: it is provided by the invention to improve thermoelectric power generation using phase-change material heat storage function
The system of efficiency utilizes phase-change material energy storage, is conducive to the utilization rate for improving various unstable heat sources, while additionally aiding holding
The power generation stability of thermoelectric heat generation system.
The present invention is conducive to hinder heat thermoelectric device cold end due to the presence of heat-insulating heat-preserving material and air barrier
Transmitting makes to continue to keep the temperature difference between cold and hot end, improves waste heat utilization.
The present invention is different according to heat source totality heat flow, chooses different thermo-electric device structures.Advantageously reduce phase-change material
Bring interface resistance makes full use of waste heat, improves conversion efficiency of thermoelectric.
The hot interface material with high-termal conductivity is used between present invention structure containing phase-change material energy storage, thermo-electric device and heat exchanger
Material, establishes effective thermal conduction path, plays the effect of heat exchanger fully.
Detailed description of the invention
The configuration schematic diagram of the common thermoelectric heat generation system of Fig. 1.
Fig. 2-1 is in the present invention containing one of phase-change material difference thermoelectric heat generation system structural schematic diagram.
Fig. 2-2 is to contain phase-change material difference thermoelectric heat generation system second structural representation in the present invention.
Fig. 3 is thermo-electric device voltage and time chart when heat flow is smaller in the present invention.
Fig. 4 is thermo-electric device voltage and time chart when heat flow is larger in the present invention.
Specific embodiment
Present pre-ferred embodiments are provided with reference to the accompanying drawing, in order to explain the technical scheme of the invention in detail.
Fig. 2-1 is containing one of phase-change material difference thermoelectric heat generation system structural schematic diagram in the present invention, and Fig. 2-2 is this hair
Contain phase-change material difference thermoelectric heat generation system second structural representation in bright.It is as shown in Figs. 1-2: provided by the invention to utilize phase
Become the system that material heat storage function improves thermopower generation efficiency, comprising: energy storage device 1,2 and of heat-exchange device containing phase-change material
Thermo-electric device 3, the energy storage device 1 containing phase-change material that the heat that thermo-electric device 3 has little time conversion is stored are handed over by near-thermal
Changing device 2.Thermo-electric device 3 in the present invention is the thermo-electric device being made of p-type and N-shaped thermoelectric material.
It is larger and smaller point of heat flow according to heat flow containing phase-change material difference thermoelectric heat generation system structure in the present invention
It is two kinds, when heat flow is larger, selects the electricity generation system of Fig. 2-1, when heat flow is smaller, selects the electricity generation system of Fig. 2-2.
The electricity generation system of Fig. 2-1 further includes cold source heat exchanger 4, and the energy storage device 1 containing phase-change material is mounted on heat exchange dress
It sets between 2 and thermo-electric device 3, thermo-electric device 3 is mounted between the energy storage device 1 containing phase-change material and cold source heat exchanger 4.
The electricity generation system of Fig. 2-2 further includes cold source heat exchanger 4, the hot end of thermo-electric device 3 and 2 (heat exchange of heat-exchange device
Device 2 is hot end heat exchanger) connect, the energy storage device 1 containing phase-change material is attached close to hotter side electrode in the hot end of thermo-electric device 3
Closely, it is isolated between the energy storage device 1 containing phase-change material and the hot end of thermo-electric device 3 with layer of insulation material 5；Thermo-electric device surrounding
And it is wrapped up between thermo-electric device thermoelectric arm with heat-insulating material；Thermo-electric device interior insulating material is close to thermo-electric device cold end 1/
Air barrier 6 is placed at 6-1/2 place, generally selects thermo-electric device interior insulating material close to thermo-electric device in specific implement
Air barrier 6 is placed at cold end 1/3.
Selected phase-change material includes but is not limited to that inorganic phase-change material is main in energy storage device 1 containing phase-change material
There are crystalline hydrate salt, molten salts, metal or alloy class etc.；Organic phase-change material mainly include paraffin, acetic acid and other
The mixture of one or more of organic matter；All kinds of composite phase-change materials；Modified all kinds of phase-change materials etc..
Increase thermal energy energy storage in thermoelectric heat generation system in the present invention and deposit structure, thermo-electric device hot end and hot end heat exchanger it
Between or thermo-electric device in close to hot end position increase the energy storing structure containing phase-change material.Phase-change material has in certain temperature model
Enclose the interior ability for changing its physical state.By taking solid-liquid phase change as an example, when being heated to fusion temperature, just generate from solid-state to liquid
The phase transformation of state, during fusing, phase-change material absorbs and stores a large amount of latent heat；When phase-change material is cooling, the heat of storage
Amount will be dispersed into environment within the scope of certain temperature, be carried out from liquid to solid reverse transformation.Physical state becomes
When change, the temperature of material itself almost remains unchanged before phase transformation is completed, and forms a wide temperature platform, but absorb or discharge
Latent heat it is but quite big.Using phase-change material heat storage function, the heat flow heat that thermo-electric device has little time conversion when larger is stored up
Store away, heat flow it is smaller or disappear when release for thermo-electric device generate electricity, reach and remaining waste heat made full use of.
In the present invention in Thermoelectric Generator design air separation layer, in the design air near the thermo-electric device cold end
Separation layer increases thermal resistance of the heat from hot end on cold end transmission path, heat is hindered to transmit to cold end.Not according to hot end heat source
Congeniality, relative position between change air barrier, radiator, phase-change material and heat exchanger, coordinates phase-change material layers width,
Air barrier width and height, heat-barrier material, phase-change material component, Heat Conduction Material and thermo-electric device are joined with respect to thermal coefficient etc.
Number improves heat recovery rate and conversion efficiency of thermoelectric.
The present invention selects different thermo-electric device structures according to thermo-electric device heat source difference, and waste heat heat source is different, heat flow and
Its thermal capacity has biggish difference.Such as the waste heat of the generations such as steel-making or waste incineration, heat flow is larger more to be concentrated；
And the generations such as vehicle exhaust, electronic component heat flow it is smaller and disperse.It is selected respectively as shown in Figure 2 according to heat flow difference
Different thermo-electric device structures, be conducive to further increase thermo-electric device waste heat utilization.When heat flow is larger, Fig. 2-is chosen
Thermoelectric heat generation system structure shown in 1.Heat source provides heat and reaches thermo-electric device hot end after phase-change material, although this structure exists
Phase-change material bring thermal resistance and its shape between heat source and thermo-electric device hot end are increased between heat source and thermo-electric device hot end
At interface resistance, but phase-change accumulation energy structure can arbitrarily increase volume, be conducive to large capacity thermal energy storage.When heat flow compared with
Hour, choose thermoelectric heat generation system structure shown in Fig. 2-2.This structure advantageously reduces thermal resistance, heat exchanging when heat flow is larger
Device heating is allowed to temperature raising, since the thermal resistance in heat exchanger and thermo-electric device hot end is less than the heat between heat exchanger and phase-change material
Resistance, thus heat arrives first at hot end, driving thermo-electric device power generation；And extra heat is further transferred to phase-change material storage
It deposits.Due to the presence of heat-insulating heat-preserving material and air barrier when heat flow is smaller or disappears, heat thermoelectric device is hindered
The transmitting of part cold end makes to continue to keep the temperature difference, driving thermo-electric device power generation between cold and hot end.But due to empty inside thermo-electric device
Between it is limited, be only applicable to the smaller operating condition of overall heat flow.
Thermal interfacial material is dosed in the present invention between phase-change material and thermo-electric device, structure containing phase-change material energy storage, thermoelectricity
There are imperceptible rough gaps between device hot and cold side and heat exchanger, if they are directly mounted together, it
Between real contact area there was only the 10% of heat exchanger base area, remaining is the air gap.Because air thermal conductivity compared with
It is low, it is the non-conductor of heat, the thermal contact resistance that will lead between thermo-electric device and heat exchanger is very big, seriously hinders the biography of heat
It leads, ultimately causes the inefficiency of heat exchanger.These gaps are filled using the thermal interfacial material with high-termal conductivity, are excluded wherein
Air, effective thermal conduction path is established between thermo-electric device and heat exchanger, thermal contact resistance can be greatly lowered, makes to exchange heat
The effect of device is fully played.The thermal interfacial material of selection includes thermally conductive viscose glue, elastic heat conducting cloth, thermally conductive gel, phase transformation
Type heat-conducting glue, heat-conducting cream and thermal conductive belt etc..
The hot physical property such as phase-change material phase transition temperature, thermal coefficient, latent heat of phase change and the close phase of its constituent in the present invention
It closes；Furthermore exist centainly between the phase transition temperature and thermoelectric material ZT maximum temperature and conversion efficiency of thermoelectric of phase-change material
Relevance.Therefore it needs to comprehensively consider the hot physical property such as phase-change material latent heat of phase change, thermal coefficient and heat exchanger heat accumulation and conducts heat it
Between relationship, regulate and control phase-change material hot property and its coupling between thermo-electric device, improve thermoelectric heat generation system thermodynamics effect
Rate.According to different heat source situations, different phase-change material systems is chosen.Phase-change material system includes inorganic phase-change material master
There are crystalline hydrate salt, molten salts, metal or alloy class etc.；Organic phase-change material mainly include paraffin, acetic acid and its
His organic matter and all kinds of composite phase-change materials.
Fig. 3 is thermo-electric device voltage and time chart when heat flow is smaller in the present invention.Fig. 4 is heat flow in the present invention
Thermo-electric device voltage and time chart when larger.Here is two specific implementation example of Fig. 3 and Fig. 4 effect:
Embodiment one:
When the smaller waste heat operating condition of the heat flows such as vehicle exhaust, manufacture and design thermoelectric heat generation system according to structure shown in Fig. 2-2
Structure tests single p-type Bi using mannitol as phase-changing energy storage material2Te3The voltage of thermoelectricity leg is in identical hot and cold side temperature
In the case of voltage change over time, timing time starting point for thermoelectric heat generation system hot end stop heat flow being provided when (such as Fig. 3 institute
Show).When no added phase-change material, stop provide heat flow simultaneously thermo-electric device voltage begin to decline, and be added to mannitol this
After one phase-change material, voltage begins to decline time relatively stopping offer heat flow and delays 250 seconds, and adds in entire temperature-fall period
Mannitol device is consistently greater than the device of material without phase-change.Mannitol is added as phase-change material, adds somewhat to heat
Electrical part output voltage.
Embodiment two:
Temperature of waste heat is higher, manufactures and designs thermoelectric heat generation system structure according to structure shown in Fig. 2-1 when heat flow is larger, adopts
Li is prepared with the method by static melting2CO3-Na2CO3-K2CO3Fused salt mixt is as phase-changing energy storage material, phase transition temperature
395 DEG C or so, test two couples of Bi2Te3Manufactured thermo-electric device voltage voltage under identical hot and cold side temperature conditions becomes at any time
Change, timing time starting point is when thermoelectric heat generation system hot end starts to provide heat flow (as shown in Figure 4).In order to guarantee phase-change material
Can abundant phase transformation, thermoelectric heat generation system hot end when reaching 500 DEG C (1000s or so), heat preservation 3000s or so starts to stop heat
Heat flow is held to provide.When not adding phase-change material, stop providing heat flow while thermo-electric device voltage is begun to decline, and adds
When inorganic salts are as phase-change material, until 5100s or so voltage is just begun to decline, generating dutation extends 1100s or so.Simultaneously
In entire temperature-fall period, device of voltage of the inorganic salts as phase-change material when consistently greater than without adding phase-change material is added
Part.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention, the claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of system for improving thermopower generation efficiency using phase-change material heat storage function, it is characterised in that: described to utilize phase transformation
The system that material heat storage function improves thermopower generation efficiency includes: energy storage device, heat-exchange device and thermoelectricity containing phase-change material
Device, the energy storage device containing phase-change material that the heat that can have little time thermo-electric device to convert stores are located at thermo-electric device
Between heat-exchange device；
The thermo-electric device is made of p-type and N-shaped thermoelectric material；
The system also includes cold source heat exchanger, the energy storage device containing phase-change material be mounted on heat-exchange device and thermo-electric device it
Between, thermo-electric device is mounted between the energy storage device containing phase-change material and cold source heat exchanger；Or the system also includes cold sources to change
The hot end of hot device, thermo-electric device connects with heat-exchange device, and the energy storage device containing phase-change material is close in the hot end of thermo-electric device
Near hotter side electrode, it is isolated between energy storage device and the hot end of thermo-electric device containing phase-change material with layer of insulation material；
The thermo-electric device interior insulating material places air barrier at thermo-electric device cold end 1/6-1/2.
2. the system according to claim 1 for improving thermopower generation efficiency using phase-change material heat storage function, feature exist
In: it is wrapped up between the thermo-electric device surrounding and thermo-electric device thermoelectric arm with heat-insulating material.
3. the system according to claim 1 for improving thermopower generation efficiency using phase-change material heat storage function, feature exist
In: the thermo-electric device interior insulating material places air barrier at thermo-electric device cold end 1/3.
4. the system according to claim 1 for improving thermopower generation efficiency using phase-change material heat storage function, feature exist
In: the phase-change material is inorganic phase-change material, metal or alloy class phase transformation material, organic phase-change material, composite phase-change
One of material, modified phase-change material.
5. the system according to claim 4 for improving thermopower generation efficiency using phase-change material heat storage function, feature exist
In: the inorganic phase-change material is the mixture of one or more of crystalline hydrate salt, molten salts；The organic
Phase-change material is the mixture of one or more of paraffin or acetic acid.
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| CN109842323A (en) * | 2017-11-27 | 2019-06-04 | 四川大学 | A kind of device of waste gas residual heat power generation |
| CN109379875A (en) * | 2018-09-10 | 2019-02-22 | 天津大学 | Miniature temperature control structural unit |
| CN109931135A (en) * | 2019-03-25 | 2019-06-25 | 哈尔滨工程大学 | A kind of exhaust heat of internal combustion engine gradient utilization system |
| CN110501831B (en) * | 2019-08-14 | 2021-01-15 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN111917335B (en) * | 2020-06-29 | 2021-10-08 | 天津商业大学 | Non-uniform flow velocity composite thermoelectric generator based on thermoelectric material temperature dependency |
| CN112491300A (en) * | 2020-12-03 | 2021-03-12 | 中国航天空气动力技术研究院 | Passive continuous power supply device for on-orbit spacecraft |
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