CN107634697A - A kind of " pyrolysis coupling " photovoltaic heat chemistry utilization system - Google Patents
A kind of " pyrolysis coupling " photovoltaic heat chemistry utilization system Download PDFInfo
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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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
- 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
- Y02E60/30—Hydrogen technology
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Abstract
Present disclose provides a kind of " pyrolysis coupling " photovoltaic heat chemistry utilization system, including：Thermal chemical reaction device, the beam condensing unit set gradually along light path, frequency divider and photovoltaic comprehensive waste-heat utilizing device；Beam condensing unit is used to sunshine converging to the frequency divider；Frequency divider is used to sunshine is divided into the first light beam and the second light beam according to the difference of sunlight wavelength；Photovoltaic comprehensive waste-heat utilizing device is used to the first light beam being converted into electric energy and heat energy；Thermal chemical reaction device is used to carry out thermal chemical reaction using the second light beam, generates thermal chemical reaction product.
Description
Technical field
This disclosure relates to technical field of solar utilization technique, more particularly to a kind of " pyrolysis coupling " photovoltaic heat chemistry comprehensive utilization system
System.
Background technology
Energy and environment problem is increasingly serious, efficiently, cleans the exploitation with regenerative resource and utilizes extremely urgent.As
One of essential reproducible energy, solar energy have that total amount is huge, widely distributed and free of contamination advantage, therefore Solar use skill
Art is more and more paid attention to.
The mainstream technology of Solar use is solar-photovoltaic technology and solar energy techniques.For photovoltaic skill
Art, its operation principle is limited to, full spectrum solar energy can not be completely converted into electric energy.The solar-energy photo-voltaic cell of volume production at present
Generating efficiency is 20% or so, it means that about 80% solar energy is converted into low temperature heat energy and wasted into environment by it；This
Outer photovoltaic system, which also exists, energizes the shortcomings that unstable, it is difficult to adjusts its power according to user's request.For solar energy optical-thermal skill
Art, optical and thermal conversion process are strong irreversible procedure, the sun of the process General Loss more than 50%, subsequent thermal-work(is transformed
The irreversibility further loss of journey remainder can use can, the above two aspect reason cause the Solar use of the technology to imitate
Rate is typically 20% or so.
Photovoltaic and photothermal comprehensive utilization technique can obtain higher solar energy on the basis of existing photovoltaic technology, photothermal technique
Utilization ratio.Photovoltaic and photothermal comprehensive utilization technique can be divided into " thermal coupling " and " pyrolysis coupling " two classes." thermal coupling " photovoltaic and photothermal
Comprehensive utilization technique is that the photovoltaic cell waste heat that electric energy can not be converted in photovoltaic cell is used as into heat engine or the heat of thermo-electric device
Source is to produce electric energy.In such technology, because the temperature of heat utilization part of heat energy is the operating temperature of photovoltaic cell, therefore
Heat generating temperature is restricted so that the relatively single solar utilization technique improved efficiency of the technology Solar use efficiency is relatively low.
In " pyrolysis coupling " photovoltaic and photothermal comprehensive utilization technique, according to photovoltaic, photo-thermal two parts to the response characteristic of spectrum, by sunshine
It is divided into two parts, wherein photon energy is utilized higher than the spectra part of photovoltaic cell band gap via photovoltaic cell, its remaining part
Divide and then carry out direct heat utilization via photothermal conversion device；This mode can avoid that the useless long wave sunshine of photovoltaic will be thrown
Photovoltaic cell surface is incident upon, is converted into photovoltaic cell low temperature exhaust heat.
But in existing " pyrolysis coupling " photovoltaic and photothermal comprehensive utilization technique, photo-thermal portion of energy is via Rankine heat engine, Si Te
The heat engines such as woods heat engine are utilized, and utilization ratio is limited by Carnot efficiency so that Solar use is less efficient；Solar energy
Can not long-time storage, system capacity output can not meet customer charge or easily power network is impacted；The technical products are
Electric energy or heat energy, product form is relatively simple, and technological adaptability is poor.
During the disclosure is realized, it is found by the applicant that following technological deficiency be present in above-mentioned prior art：
(1) in " thermal coupling " photovoltaic and photothermal comprehensive utilization technique, because photovoltaic cell running temperature is relatively low, heat utilization temperature by
To limitation, so as to which heat utilization income is smaller, the relatively single solar utilization technique of its Solar use efficiency improves few；
(2) in " pyrolysis coupling " photovoltaic and photothermal comprehensive utilization technique, solar thermal energy directly utilizes via thermodynamic cycle, efficiency by
Limited to Carnot efficiency, income is relatively low；
(3) in " pyrolysis coupling " photovoltaic and photothermal comprehensive utilization technique, solar energy is difficult to long-time storage, therefore is faced with energy supply
The problem of unstable, customer charge can not be met or easily power network is impacted.
(4) in " pyrolysis coupling " photovoltaic and photothermal comprehensive utilization technique, the product form of output is relatively simple, technological adaptability compared with
Difference.
Disclosure
(1) technical problems to be solved
Present disclose provides a kind of " pyrolysis coupling " photovoltaic heat chemistry utilization system, to solve above-mentioned skill at least in part
Art problem.
(2) technical scheme
Present disclose provides a kind of " pyrolysis coupling " photovoltaic heat chemistry utilization system, including：Thermal chemical reaction device, edge
Beam condensing unit, frequency divider and the photovoltaic-comprehensive waste-heat utilizing device that light path is set gradually；The beam condensing unit is used for
Sunshine is converged into the frequency divider；The frequency divider is used to sunshine is divided into the according to the different of sunlight wavelength
One light beam and the second light beam；Photovoltaic-the comprehensive waste-heat utilizing device is used to the first light beam being converted into electric energy and heat
Energy；The thermal chemical reaction device is used to carry out thermal chemical reaction using the second light beam, generates thermal chemical reaction product.
In some embodiments of the present disclosure, in addition to：Chemical generated device；The thermal chemical reaction product is passed through chemistry
TRT is to produce electric energy.
In some embodiments of the present disclosure, in addition to：Chemical storage tanks；Thermal chemical reaction product is first stored in chemical storage
Tank, then chemical generated device is passed through to produce electric energy.
In some embodiments of the present disclosure, the speed that the thermal chemical reaction product is passed through chemical generated device is adjustable
Section.
In some embodiments of the present disclosure, the photovoltaic-comprehensive waste-heat utilizing device includes：Photovoltaic
Battery and photovoltaic cell residual heat using device, the solar-energy photo-voltaic cell is towards frequency divider；Solar-energy photo-voltaic cell produces
Electric energy and heat energy, electric energy externally export as system product, and photovoltaic cell residual heat using device is anti-using heat energy preheating heat chemistry
The reactant answered.
In some embodiments of the present disclosure, the photon energy of first light beam is higher than the spectrum of photovoltaic cell band gap,
The photon energy of second light beam is less than the spectrum of photovoltaic cell band gap.
In some embodiments of the present disclosure, the beam condensing unit is tower beam condensing unit, point focusing Fresnel optically focused
Device or composite parabolic beam condensing unit.
In some embodiments of the present disclosure, the frequency divider is using frequency dividing film.
In some embodiments of the present disclosure, the thermal chemical reaction is methanol decomposition reaction, dimethyl ether cracking reaction, first
Alcohol steam reforming reaction, dimethyl ether-steam reforming reaction, ethanol steam reforming reaction, methane-steam reforming,
Methane reforming with carbon dioxide, water decomposition reaction or carbon dioxide decomposition reaction.
In some embodiments of the present disclosure, the quantity of the beam condensing unit is one or more；Frequency divider is at least
One group, at least one frequency divider for including setting gradually along light path per set of division device, it produces the first light beam all the way, each
Frequency divider produces the second light beam all the way；The light beam of one or more beam condensing unit convergences is received per set of division device；Solar energy
Photovoltaic-comprehensive waste-heat utilizing device is one or more, and each photovoltaic-comprehensive waste-heat utilizing device receives a branch of or more
The light beam of beam first；Thermal chemical reaction device is one or more, and each thermal chemical reaction device receives a branch of or light of multi beam second
Beam.
(3) beneficial effect
It can be seen from the above technical proposal that " pyrolysis coupling " the photovoltaic heat chemistry utilization system of the disclosure is with as follows
Technique effect：
(1) by the way that different spectrum are distributed to the device that can efficiently utilize corresponding spectrum, avoid spectrum mismatch and bring
The sunLoss, relative to " thermal coupling " photovoltaic and photothermal utilization system, specifically avoid can not utilize photovoltaic cell
Spectrum through photoelectric conversion be low temperature heat energy, but it is higher that via thermal chemical reaction device the partial spectrum is converted into temperature
Heat energy, avoid spectrum and mismatch the available loss of energy brought, be advantageous to the raising of Solar use efficiency；
(2) more low-grade solar thermal energy is converted into more high-grade chemical energy through chemical reaction, improves solar thermal energy
Grade, the partial heat energy is directly utilized through heat engine relative to " pyrolysis coupling " photovoltaic and photothermal utilization system, can be with
Obtain higher solar energyEfficiency；
(3) product storage of thermal chemical reaction is in chemical storage tanks, it is possible to achieve long-time energy storage so that system is provided with
To the vital energy-storage function of solar utilization technique；
(4) speed of chemical generated device is passed through by the chemical product adjusted in chemical storage tanks, chemical hair can be adjusted
The generated output of electric installation, it can be made complementary with photovoltaic power so that system generated output is stable, raising energizes quality, keeps away
Exempt from the impact to user, power network, can also meet that user bears according to the generated output of user's request regulation chemical generated device
Lotus；
(5) output products of system can be electric energy, heat energy or chemical energy, and the product of system is more abundant, and system adapts to
Property enhancing.
Brief description of the drawings
Fig. 1 is " pyrolysis coupling " photovoltaic heat chemistry utilization system structural representation of the embodiment of the present disclosure；
Fig. 2 is another structural representation of " pyrolysis coupling " photovoltaic heat chemistry utilization system of the embodiment of the present disclosure；
Fig. 3 is the another structural representation of " pyrolysis coupling " photovoltaic heat chemistry utilization system of the embodiment of the present disclosure.
Embodiment
Below in conjunction with the accompanying drawing in embodiment and embodiment, the technical scheme in the embodiment of the present disclosure is carried out it is clear,
Complete description.Obviously, described embodiment is only disclosure part of the embodiment, rather than whole embodiments.Base
Embodiment in the disclosure, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belong to the scope of disclosure protection.
The embodiment of the present disclosure provides a kind of " pyrolysis coupling " photovoltaic heat chemistry utilization system, and it includes：Along light path according to
The Fresnel Lenses formula beam condensing unit 1 of secondary setting, divide film 2 and photovoltaic-comprehensive waste-heat utilizing device 3 and thermalization
Learn reaction unit 4, chemical storage tanks 5 and chemical generated device 6.
Sunshine can be divided into two beams by frequency dividing film 2 according to the difference of sunlight wavelength.Photovoltaic-residual heat integrative profit
Include solar-energy photo-voltaic cell 3a and photovoltaic cell residual heat using device 3b, solar-energy photo-voltaic cell 3a towards frequency dividing with device 3
Film 2.
The photovoltaic heat chemistry utilization system of the present embodiment, Fresnel Lenses formula beam condensing unit 1 converge to sunshine
Film 2 is divided, sunshine is divided into two beams by frequency dividing film 2 according to the difference of sunlight wavelength：First light beam and the second light beam, wherein,
The photon energy of first light beam is higher than the spectrum of photovoltaic cell band gap, and the photon energy of the second light beam is less than photovoltaic cell band gap
Spectrum.
First light beam is distributed to the surface of photovoltaic-comprehensive waste-heat utilizing device 3, i.e. solar-energy photo-voltaic cell 3a's
Surface, it is converted into electric energy and heat energy.Electric energy externally exports as system product, and heat energy is through photovoltaic cell residual heat using device 3b
Utilize, externally exported as system product or the reactant for preheating heat chemical reaction equipment 4.
Second light beam distributes to thermal chemical reaction device 4 and is converted into heat energy, drives thermal chemical reaction.Thermal chemical reaction
Reactant, it is preheated through photovoltaic cell residual heat using device 3b first, and it is anti-to carry out heat chemistry subsequently into thermal chemical reaction device 4
Should.The product of thermal chemical reaction enters and is stored in chemical storage tanks 5, and is passed through chemical generated device 6 as needed to produce
Meet the electric energy of user's request, wherein, the speed that is passed through that the product of chemical generated device is passed through by chemical storage tanks can adjust.
As can be seen here, " pyrolysis coupling " photovoltaic heat chemistry utilization system of the disclosure, by by different spectrum distribute to
Can be efficiently using the device of corresponding spectrum, the loss of energy can be used by avoiding the sun that spectrum mismatch is brought, relative to " thermal coupling "
Photovoltaic and photothermal utilization system, specifically avoid the unserviceable solar spectrum of photovoltaic cell through photovoltaic conversion is Low Temperature Thermal
Can, but the partial spectrum is converted into the higher heat energy of temperature via thermal chemical reaction device, avoid spectrum and mismatch band
The available loss of energy come, be advantageous to the raising of Solar use efficiency；More low-grade solar thermal energy through chemical reaction be converted to compared with
High-grade chemical energy, the grade of solar thermal energy is improved, relative to " pyrolysis coupling " photovoltaic and photothermal utilization system to the portion
Divide heat energy directly to be utilized through heat engine, higher Solar use efficiency can be obtained；The product storage of thermal chemical reaction in
In chemical storage tanks, it is possible to achieve long-time energy storage so that system is provided with to the vital energy-storage function of Solar use；It is logical
The speed that the chemical product in chemical storage tanks is passed through chemical generated device is overregulated, the generating work(of chemical generated device can be adjusted
Rate, it can be made complementary with photovoltaic power so that system generated output is stable, raising energizes quality, avoids to user, power network
Impact, the generated output of chemical generated device can also be adjusted according to user's request to meet customer charge；System product can
Think electric energy, heat energy or chemical energy, the product of system is more abundant, system suitability enhancing.
" pyrolysis coupling " photovoltaic heat chemistry utilization system of another embodiment of the disclosure, with upper embodiment difference
It is, it does not have energy-storage function, i.e. system does not include chemical storage tanks 5, and thermal chemical reaction device 4 is directly connected to Chemically generation dress
6 are put, the product of thermal chemical reaction device 4 can be passed directly into chemical generated device 6 by thermal chemical reaction device 4.Further, also
Chemical generated device 6 can not included, the product of thermal chemical reaction device 4 directly externally exports as system product.
In the above-described embodiments, Fresnel Lenses formula beam condensing unit 1 can use tower beam condensing unit, composite parabolic optically focused
The geometry such as device beam condensing unit is replaced.Dividing film 2 can also use other kinds of frequency divider to replace.Thermal chemical reaction fills
Putting the thermal chemical reaction in 4 can be but be not limited to：Methanol decomposition reaction, dimethyl ether cracking reaction, methanol steam reforming are anti-
Should, dimethyl ether-steam reforming reaction, ethanol steam reforming reaction, methane-steam reforming, methane and carbon dioxide weight
Whole reaction, water decomposition reaction, carbon dioxide decomposition reaction.Chemical generated device 6 can be but be not limited to internal combustion engine TRT,
Gas turbine generating set, fuel cell power generating system.
The disclosure is described simply by two examples above, but the technical scheme of the disclosure is not limited to this.
Specifically, beam condensing unit quantity can be multiple.It can also be multiple to divide film 2, and specifically, system can include multigroup
Film is divided, at least one frequency dividing film for including setting gradually along light path per set of division film, it produces the first light beam all the way, Mei Yifen
Frequency film produces the second light beam all the way.The light beam of 1 beam condensing unit convergence can be received per set of division film, can also be received multiple poly-
The light beam of electro-optical device convergence.Photovoltaic-comprehensive waste-heat utilizing device 3 can also be with thermal chemical reaction device 4 accordingly
It is multiple, to receive corresponding first light beam and the second light beam.Each of which photovoltaic-comprehensive waste-heat utilizing device 3 can connect
The a branch of or light beam of multi beam first is received, each thermal chemical reaction device 4 can receive a branch of or light beam of multi beam second.
As shown in Fig. 2 system includes 1 Fresnel Lenses formula beam condensing unit, 2 frequency dividing films, 2,1 photovoltaics-remaining
Hot comprehensive utilization device 3 and 2 thermal chemical reaction devices 4.Sunshine is divided into two beams by the first frequency dividing film, wherein a branch of by first
Thermal chemical reaction device 4 is received, and another beam is further divided into two beams by the second frequency dividing film, respectively by photovoltaic-residual heat integrative profit
Received with device 3 and the second thermal chemical reaction device 4.As shown in figure 3, relative to Fig. 2, system also includes another group of 1 phenanthrene
Nie Er lens types beam condensing unit, 2 frequency dividing films 2 and 1 photovoltaic-comprehensive waste-heat utilizing device 3.It is similar with Fig. 2, it is another
Sunshine is also divided into two beams by the first frequency dividing film of group, wherein a branch of also received by the first thermal chemical reaction device 4, the group second
Another beam is further divided into two beams by frequency dividing film, respectively by the heat chemistry of photovoltaic-comprehensive waste-heat utilizing device 3 and second of the group
Reaction unit 4 receives.
So far, the present embodiment is described in detail combined accompanying drawing.According to above description, those skilled in the art
There should be clear understanding to the disclosure.
It should be noted that in accompanying drawing or specification text, the implementation that does not illustrate or describe is affiliated technology
Form known to a person of ordinary skill in the art, is not described in detail in field.In addition, above-mentioned definition to each element and not only limiting
Various concrete structures, shape or the mode mentioned in embodiment, those of ordinary skill in the art can be carried out simply more to it
Change or replace, such as：
(1) direction term mentioned in embodiment, such as " on ", " under ", "front", "rear", "left", "right" etc., only it is ginseng
The direction of accompanying drawing is examined, is not used for limiting the protection domain of the disclosure；
(2) consideration that above-described embodiment can be based on design and reliability, the collocation that is mixed with each other uses or and other embodiment
Mix and match uses, i.e., the technical characteristic in different embodiments can freely form more embodiments.
Particular embodiments described above, the purpose, technical scheme and beneficial effect of the disclosure are carried out further in detail
Describe in detail bright, should be understood that the specific embodiment that the foregoing is only the disclosure, be not limited to the disclosure, it is all
Within the spirit and principle of the disclosure, any modification, equivalent substitution and improvements done etc., the guarantor of the disclosure should be included in
Within the scope of shield.
Claims (10)
1. a kind of " pyrolysis coupling " photovoltaic heat chemistry utilization system, including：Thermal chemical reaction device, set gradually along light path
Beam condensing unit, frequency divider and photovoltaic-comprehensive waste-heat utilizing device；
The beam condensing unit is used to sunshine converging to the frequency divider；
The frequency divider is used to sunshine is divided into the first light beam and the second light beam according to the difference of sunlight wavelength；
Photovoltaic-the comprehensive waste-heat utilizing device is used to the first light beam being converted into electric energy and heat energy；
The thermal chemical reaction device is used to carry out thermal chemical reaction using the second light beam, generates thermal chemical reaction product.
2. " pyrolysis coupling " photovoltaic heat chemistry utilization system as claimed in claim 1, in addition to：Chemical generated device；Institute
State thermal chemical reaction product and be passed through chemical generated device to produce electric energy.
3. " pyrolysis coupling " photovoltaic heat chemistry utilization system as claimed in claim 2, in addition to：Chemical storage tanks；Heat chemistry
Reaction product is first stored in chemical storage tanks, then is passed through chemical generated device to produce electric energy.
4. " pyrolysis coupling " photovoltaic heat chemistry utilization system as claimed in claim 3, the thermal chemical reaction product are passed through
The speed of chemical generated device can adjust.
5. " pyrolysis coupling " photovoltaic heat chemistry utilization system as claimed in claim 1, the photovoltaic-residual heat integrative
Included using device：Solar-energy photo-voltaic cell and photovoltaic cell residual heat using device, the solar-energy photo-voltaic cell is towards frequency dividing
Device；
Solar-energy photo-voltaic cell produces electric energy and heat energy, electric energy externally export as system product, photovoltaic cell UTILIZATION OF VESIDUAL HEAT IN dress
Put the reactant using heat energy preheating thermal chemical reaction.
6. " pyrolysis coupling " photovoltaic heat chemistry utilization system as claimed in claim 1, the photon energy of first light beam
Higher than the spectrum of photovoltaic cell band gap, the photon energy of the second light beam is less than the spectrum of photovoltaic cell band gap.
7. " pyrolysis coupling " photovoltaic heat chemistry utilization system as claimed in claim 1, the beam condensing unit is tower optically focused
Device, point focusing Fresnel beam condensing unit or composite parabolic formula beam condensing unit.
8. " pyrolysis coupling " photovoltaic heat chemistry utilization system as claimed in claim 1, the frequency divider is using frequency dividing film.
9. " pyrolysis coupling " photovoltaic heat chemistry utilization system as claimed in claim 1, the thermal chemical reaction are split for methanol
Solve reaction, the reaction of dimethyl ether cracking reaction, methanol steam reforming, dimethyl ether-steam reforming reaction, ethanol steam reforming
Reaction, methane-steam reforming, methane reforming with carbon dioxide, water decomposition reaction or carbon dioxide decomposition reaction.
10. " pyrolysis coupling " photovoltaic heat chemistry utilization system as claimed in claim 1, the quantity of the beam condensing unit is one
It is individual or multiple；
Frequency divider is at least one set, and at least one frequency divider for including setting gradually along light path per set of division device, it is produced
Raw first light beam all the way, each frequency divider produce the second light beam all the way；One or more optically focused dresses are received per set of division device
Put the light beam of convergence；
Photovoltaic-comprehensive waste-heat utilizing device is one or more, and each photovoltaic-comprehensive waste-heat utilizing device connects
Receive a branch of or light beam of multi beam first；
Thermal chemical reaction device is one or more, and each thermal chemical reaction device receives a branch of or light beam of multi beam second.
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