CN114094915A - Energy storage type high-temperature photovoltaic and photo-thermal integrated power generation system and method - Google Patents
Energy storage type high-temperature photovoltaic and photo-thermal integrated power generation system and method Download PDFInfo
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- 238000004146 energy storage Methods 0.000 title claims abstract description 19
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- 238000005338 heat storage Methods 0.000 claims description 17
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 10
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
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- 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
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
- F01K25/103—Carbon dioxide
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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
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/30—Arrangements for concentrating solar-rays for solar heat collectors with lenses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/10—Arrangements for storing heat collected by solar heat collectors using latent heat
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/20—Optical components
- H02S40/22—Light-reflecting or light-concentrating means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/44—Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/60—Thermal-PV hybrids
Abstract
The invention relates to an energy storage type high-temperature photovoltaic and photo-thermal integrated power generation system and a method, wherein the system comprises a heat absorption tower, a photo-thermal assembly and a photovoltaic assembly; the photo-thermal component comprises a light gathering system, a high-temperature storage tank, a low-temperature storage tank, a heat exchange system, a turbine system, a generator and a heat absorption cavity; the heat absorption cavity is arranged above the heat absorption tower and comprises a heating surface pipeline and an ultraviolet and visible light reflection film arranged on the surface of the heating surface pipeline; a heat exchange medium is arranged in the heating surface pipeline, and the output end of the heat exchange medium sequentially passes through the high-temperature storage tank, the low-temperature storage tank and a heat release loop of the heat exchange system along the flowing direction and is connected with the input end of the heat exchange medium; a heat absorption loop of the heat exchange system is connected with a turbine system to do work, and the turbine system is coaxially connected with a generator; the photovoltaic module is arranged at the condensation focus of the heat absorption cavity and comprises a high-concentration photovoltaic cell panel arranged along the incident direction of light rays and a spectrum reflection film arranged on the surface of the high-concentration photovoltaic cell panel; the condensing system is used for reflecting the direct radiation of the sun to the heating surface of the heat absorption cavity and the spectral reflection film.
Description
Technical Field
The invention relates to the field of solar power generation, in particular to an energy storage type high-temperature photovoltaic and photo-thermal integrated power generation system and method.
Background
Solar photovoltaic power generation is based on a solar photovoltaic module, converts light energy into electric energy, and is widely applied as a novel renewable energy source. The solar photo-thermal power generation is based on concentrating solar energy as a theoretical basis, solar heat energy is collected by utilizing a large-scale parabolic mirror or dish-shaped mirror, the collected heat energy is stored through a heat-conducting medium, steam is generated through a heat exchange device, the steam pushes a traditional turbine, and then a power generator is driven to generate power. Because the photovoltaic and the photo-thermal use the energy of different wave bands of sunlight, the photovoltaic and the photo-thermal can simultaneously generate electricity by using the same light-gathering system and the light-splitting principle, thereby forming a photovoltaic and photo-thermal integrated power generation system.
The existing high-power concentrating photovoltaic system mainly adopts a disc type system, and because the heat collection capacity of a single disc type high-power concentrating photovoltaic power generation system is limited, the heat utilization capacity is limited, and the large-scale application cannot be realized. And the high-concentration photovoltaic photo-thermal integrated system (HCPVT system) is utilized for waste heat power generation by utilizing a cooling medium, and the HCPVT and organic Rankine cycle low-temperature power generation technology is mainly coupled, namely, the HCPVT-ORC system. However, due to the fact that the temperature of cooling water is low, the power generation efficiency of the HCPVT-ORC system is only 6% -10%, and the improvement of the power generation efficiency of the whole system is limited. Therefore, the conventional high-concentration photovoltaic and photo-thermal integrated system has the limitation that the system can only be circularly coupled with low-temperature power generation, and the photoelectric conversion efficiency of the conventional high-concentration photovoltaic and photo-thermal integrated system is low.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an energy storage type high-temperature photovoltaic and photo-thermal integrated power generation system and method, which are reasonable in design, simple in structure and wide in application range and can effectively improve the photoelectric conversion efficiency.
The invention is realized by the following technical scheme:
an energy storage type high-temperature photovoltaic and photothermal integrated power generation system comprises a heat absorption tower, a photothermal component and a photovoltaic component;
the photo-thermal assembly comprises a light condensation system, a high-temperature storage tank, a low-temperature storage tank, a heat exchange system, a turbine system, a generator and a heat absorption cavity;
the heat absorption cavity is arranged above the heat absorption tower and comprises a heating surface pipeline and an ultraviolet and visible light reflection film arranged on the surface of the heating surface pipeline; a heat exchange medium is arranged in the heating surface pipeline, and the output end of the heat exchange medium sequentially passes through the high-temperature storage tank, the low-temperature storage tank and a heat release loop of the heat exchange system along the flowing direction and is connected with the input end of the heat exchange medium; a heat absorption loop of the heat exchange system is connected with a turbine system to do work, and the turbine system is coaxially connected with a generator;
the photovoltaic module is arranged at a condensation focus of the heat absorption cavity and comprises a high-concentration photovoltaic cell panel arranged along the incident direction of light rays and a spectrum reflection film arranged on the surface of the high-concentration photovoltaic cell panel;
the light condensing system is used for reflecting the direct radiation of the sun to the heating surface of the heat absorption cavity and the spectral reflection film.
Furthermore, the heat absorption cavity adopts a parabolic rotary reflection cavity, the heated surface pipeline consists of one or more groups of tube bundles, and the tube bundles adopt any one of spiral coil pipes, round tube bundles and parallel straight tube bundles.
Further, the heat exchange medium is any one of supercritical carbon dioxide, water, heat transfer oil and molten salt.
Furthermore, the spectral reflection film adopts a convex reflector.
Further, the light condensing system adopts a tower heliostat field or a disc type heat collector array.
Further, the low-temperature storage tank and the high-temperature storage tank adopt any one of heat conduction oil heat storage, low-temperature molten salt heat storage, phase change heat storage and solid heat storage systems.
Further, the turbine system adopts a steam turbine or a supercritical carbon dioxide turbine system.
Furthermore, a cooling system is arranged between the inlet end of the turbine system and the heat exchange system.
An energy storage type high-temperature photovoltaic and photo-thermal integrated power generation method comprises the following steps,
the condensing system reflects the direct radiation of the sun to the heating surface of the heat absorption cavity and the spectral reflection film;
reflected solar radiation mid-infrared rays and far-infrared rays are absorbed by the heat absorption cavity, and ultraviolet rays and visible light are transmitted out after being projected to the high-power concentrating photovoltaic cell panel through the spectral reflection film for power generation;
the heat absorbed by the heat absorption cavity is sent to the high-temperature storage tank through a heat exchange medium, the heat transfer fluid in the high-temperature storage tank transfers the heat to a power generation working medium through a heat exchange system, and the power generation working medium does work in a turbine system to drive a generator to generate power and then is sent out;
and the high-concentration photovoltaic cell panel and the generator generate electricity together.
Further, the light condensing system adjusts the deflection angle according to the radiation angle of the sun.
Compared with the prior art, the invention has the following beneficial technical effects:
the system of the invention separates infrared rays, far infrared rays, ultraviolet rays and visible light in solar direct radiation reflected by a condensing system by placing a photovoltaic component with a spectrum reflection function on a heat absorption tower and utilizing a spectrum reflection film arranged on the surface of a high-power condensing photovoltaic cell panel, the ultraviolet rays and the visible light are projected to the high-power condensing photovoltaic cell panel to generate electricity and then sent out to complete photovoltaic power generation, the infrared rays and the far infrared rays are absorbed by a heat absorption cavity arranged on the heat absorption tower, heat is transferred to a heat transfer fluid in a high-temperature storage tank along a heat release loop through a heat exchange medium and then transferred to a turbine system through the heat absorption loop to drive a generator to generate electricity and then send out to complete photo-thermal power generation, thereby realizing the coupling of high-efficiency photovoltaic power generation and a high-temperature thermal power generation system, realizing the great improvement of photoelectric conversion efficiency on the basis of increasing a small amount of investment, compared with a single high-power condensing photovoltaic power generation system, the photoelectric conversion efficiency can be additionally improved by more than 10%, the whole photoelectric conversion efficiency of the system is more than two times of that of a conventional photo-thermal power generation system, the defect that the conventional high-concentration photovoltaic photo-thermal integrated system can only be circularly coupled with low-temperature power generation is effectively overcome, and the problem of low photoelectric conversion efficiency of the conventional photo-thermal power generation system is also solved.
Furthermore, the heat absorption cavity adopted by the system is a parabolic rotary reflection cavity, and the cavity adopts one or more groups of tube bundles consisting of a spiral coil, a square-shaped tube bundle and a parallel straight tube bundle, so that the solar straight radiation can be effectively collected, and the heat absorption efficiency of the system is improved.
Furthermore, the system of the invention ensures the heat transfer effect, is safe and reliable and improves the economic feasibility by using any one of supercritical carbon dioxide, water, heat transfer oil or low-temperature molten salt as a heat exchange medium.
Furthermore, the system adopts the convex reflector as the spectrum reflecting film, has good reflecting effect, can effectively ensure light separation and improve the conversion efficiency of the system.
Furthermore, the system takes a tower-type heliostat mirror field or a disc-type heat collector array as a light condensing system, and can condense the solar straight radiation to the maximum extent, thereby improving the conversion efficiency of the photovoltaic module and the photo-thermal module.
Furthermore, the system adopts any one of heat-conducting oil heat storage, low-temperature molten salt heat storage, phase change heat storage or solid heat storage systems as the low-temperature storage tank and the high-temperature storage tank, so that the system has the advantages of good heat storage effect, economy, reliability, safety, feasibility and small heat loss.
Furthermore, the system adopts any one of a steam turbine or a supercritical carbon dioxide turbine system as a turbine system, and is efficient, economic, safe and effective.
Furthermore, the cooling system is arranged between the turbine system and the heat exchange system, so that the reliability of the whole system in the photoelectric conversion process can be further ensured, and the overall safety and the conversion efficiency are improved.
Drawings
Fig. 1 is a schematic structural diagram of the system according to the embodiment of the present invention.
In the figure: 1. the solar photovoltaic solar energy heat collection system comprises a heat absorption cavity, 2 a light condensation system, 3 a high-concentration photovoltaic cell panel, 4 a spectral reflection film, 5 a low-temperature storage tank, 6 a high-temperature storage tank, 7 a heat exchange system, 8 a turbine system, 9 a cooling system, 10 a generator, 11 a heat absorption tower and 12 a heat exchange medium.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
Example one
The invention discloses an energy storage type high-temperature photovoltaic and photo-thermal integrated power generation system, which comprises a heat absorption cavity 1, a light condensation system 2, a high-power light condensation photovoltaic cell panel 3, a spectrum reflection film 4, a low-temperature storage tank 5, a high-temperature storage tank 6, a heat exchange system 7, a turbine system 8, a cooling system 9, a power generator 10, a heat absorption tower 11 and a heat exchange medium 12, wherein the heat absorption cavity is formed in the heat absorption tower; the heat absorption cavity 1, the light condensation system 2, the low-temperature storage tank 5, the high-temperature storage tank 6, the heat exchange system 7, the turbine system 8 and the generator 10 are photo-thermal components, and the high-power light condensation photovoltaic cell panel 3 and the spectral reflection film 4 are photovoltaic components;
the heat absorption cavity 1, the high-concentration photovoltaic cell panel 3 and the spectrum splitting reflecting film 4 jointly form a receiver for focusing light beams, and the receiver is placed on the heat absorption tower 11; the heat absorption cavity 1 adopts a parabolic rotary reflection cavity structure, the cavity is composed of one or more groups of tube bundles, and the tube bundles can adopt any one of spiral coil pipes, zigzag tube bundles and parallel straight tube bundles; the heat absorption cavity 1 comprises a heating surface pipeline and an ultraviolet-visible light reflection film, the ultraviolet-visible light reflection film is arranged on the surface of the heating surface pipeline, and a heat exchange medium 12 is arranged inside the heating surface pipeline; the heat exchange medium 12 can be supercritical carbon dioxide, water, heat conduction oil or low-temperature molten salt, and the flowing directions of the heat exchange medium are a high-temperature storage tank 6, a low-temperature storage tank 5 and a heat exchange system 7; the spectral reflection film 4 adopts a convex reflector;
the heat exchange system 7 comprises a heat release loop and a heat absorption loop; the heat absorption loop is connected with a turbine system 8; the heat release loop is connected with the input end of the heat exchange medium 12, and the heat absorption loop connected with the output end of the heat exchange medium 12 forms a heat transfer loop;
the high-power concentrating photovoltaic cell panel 3 is arranged at the focus of the heat absorption cavity 1, the inner surface of the high-power concentrating photovoltaic cell panel is provided with a spectral reflection film 4, and the spectral reflection film 4 is a convex reflector and can transmit ultraviolet rays and visible light and reflect infrared rays and far infrared rays;
the low-temperature storage tank 5 and the high-temperature storage tank 6 can adopt heat-conducting oil heat storage, low-temperature molten salt heat storage, phase-change heat storage or solid heat storage types;
the turbine system 8 can adopt a steam turbine or a supercritical carbon dioxide turbine system, is coaxially connected with a generator 10, and is provided with a cooling system 9 at an inlet end;
the light condensing system 2 consists of hundreds to tens of thousands of heliostats and reflects the direct radiation of the sun to the heating surface of the heat absorption cavity 1 and the spectrum splitting reflecting film 4 through different deflection angles; the light-gathering system 2 can be a tower heliostat mirror field or a dish collector array.
The system has the working principle that the heat absorption cavity 1 absorbs infrared rays and far infrared rays in solar direct radiation reflected by the light condensation system 2, and the spectral reflection film 4 projects ultraviolet rays and visible light in the solar direct radiation reflected by the light condensation system 2 to the high-power light-condensation photovoltaic cell panel 3 to generate electricity and send out the electricity; the heat absorption cavity 1 absorbs heat and then sends the heat to the high-temperature storage tank 6 through the heat exchange medium 12, heat transfer fluid in the high-temperature storage tank 6 transfers the heat to a power generation working medium through the heat exchange system 7, the power generation working medium works in the turbine system 8 to drive the generator 10 to generate power, and a coupling system for generating power by the high-concentration photovoltaic cell panel 3 and the generator 10 together is formed.
Based on the system, the invention also provides an energy storage type high-temperature photovoltaic and photothermal integrated power generation method, which comprises the following steps,
the condensing system 2 reflects the direct radiation of the sun to the heating surface of the heat absorption cavity 1 and the spectral reflection film 4;
reflected solar radiation mid-infrared rays and far-infrared rays are absorbed by the heat absorption cavity 1, and ultraviolet rays and visible light are transmitted out after being projected to the high-power concentrating photovoltaic cell panel 3 through the spectral reflection film 4 to generate electricity;
the heat absorbed by the heat absorption cavity 1 is sent into the high-temperature storage tank 6 through the heat exchange medium 12, the heat transfer fluid in the high-temperature storage tank 6 transfers the heat to the power generation working medium through the heat exchange system 7, and the power generation working medium does work in the turbine system 8 to drive the power generator 10 to generate power and then is sent out;
and the high-concentration photovoltaic cell panel 3 and the generator 10 generate power together.
Wherein, the light-gathering system 2 adjusts the deflection angle according to the radiation angle of the sun.
In the embodiment, the total installation machine is 50MW, the light gathering system 2 adopts a tower mirror field, the heat exchange medium 12 in the heat absorption cavity 1 adopts heat conduction oil, the inlet temperature is 290 ℃, the outlet temperature is 393 ℃, the cutoff wavelength of the spectral reflection film 4 is 900nm, the optical efficiency at the design point is 80%, the overflow loss is 10%, the efficiency of the high-power light gathering photovoltaic module 3 is 28%, the overall thermal efficiency of the receiver is 50%, the thermoelectric conversion efficiency is 33%, and the other losses are 0.96 in total, and the comprehensive photoelectric efficiency of the system is 30.75%.
Example two
In the embodiment, the total installation machine is 1MW, the light gathering system 2 adopts a disc type reflector, the heat exchange medium 12 in the heat absorption cavity 1 adopts heat conduction oil, the inlet temperature is 290 ℃, the outlet temperature is 393 ℃, the cut-off wavelength of a spectral reflection film is 900nm, the optical efficiency of a design point is 85%, the efficiency of a high-power light gathering photovoltaic module is 28%, the overall thermal efficiency of a receiver is 50%, the thermoelectric conversion efficiency is 33%, and other losses are 0.96 in total, so that the comprehensive photoelectric efficiency of the system is 36.3%.
EXAMPLE III
In the embodiment, the total installation machine is 5MW, the light gathering system 2 adopts a disc type reflector array, the heat exchange medium 12 in the heat absorption cavity 1 adopts supercritical carbon dioxide, the inlet temperature is 290 ℃, the outlet temperature is 393 ℃, the cut-off wavelength of a spectral reflection film is 900nm, the optical efficiency of a design point is 85%, the efficiency of a high-power light gathering photovoltaic module is 28%, the overall thermal efficiency of a receiver is 50%, the thermoelectric conversion efficiency is 40%, and other losses are 0.96 in total, and the comprehensive photoelectric efficiency of the system is 39.2%.
Example four
In the embodiment, the total installation machine is 50MW, the light gathering system 2 adopts a tower mirror field, the heat exchange medium 12 in the heat absorption cavity 1 adopts supercritical carbon dioxide, the inlet temperature is 290 ℃, the outlet temperature is 530 ℃, the cut-off wavelength of the spectral reflection film 4 is 900nm, the optical efficiency of a design point is 80%, the overflow loss is 10%, the efficiency of the high-power light gathering photovoltaic module 3 is 28%, the overall thermal efficiency of the receiver is 50%, the thermoelectric conversion efficiency is 46%, and the total loss of other parts is 0.96%, and the comprehensive photoelectric efficiency of the system is 35.25%.
Claims (10)
1. An energy storage type high-temperature photovoltaic and photothermal integrated power generation system is characterized by comprising a heat absorption tower (11), a photothermal component and a photovoltaic component;
the photo-thermal component comprises a light condensation system (2), a high-temperature storage tank (6), a low-temperature storage tank (5), a heat exchange system (7), a turbine system (8), a generator (10) and a heat absorption cavity (1);
the heat absorption cavity (1) is arranged above the heat absorption tower (11) and comprises a heating surface pipeline and an ultraviolet and visible light reflection film arranged on the surface of the heating surface pipeline; a heat exchange medium (12) is arranged in the heating surface pipeline, and the output end of the heat exchange medium (12) sequentially passes through a heat release loop of the high-temperature storage tank (6), the low-temperature storage tank (5) and the heat exchange system (7) in the flow direction and is connected with the input end of the heat exchange medium (12); a heat absorption loop of the heat exchange system (7) is connected with a turbine system (8) to do work, and the turbine system (8) is coaxially connected with a generator (10);
the photovoltaic module is arranged at a condensation focus of the heat absorption cavity (1), and comprises a high-concentration photovoltaic cell panel (3) arranged along the incident direction of light rays and a spectrum-splitting reflecting film (4) arranged on the surface of the high-concentration photovoltaic cell panel (3);
the light condensing system (2) is used for reflecting the direct radiation of the sun to the heating surface of the heat absorption cavity (1) and the spectrum reflection film (4).
2. The energy storage type high-temperature photovoltaic and photothermal integrated power generation system according to claim 1, wherein the heat absorption cavity (1) is a parabolic rotary reflection cavity, and the heated surface pipeline is composed of one or more groups of tube bundles, and the tube bundles are any one of spiral coils, loop-shaped tube bundles and parallel straight tube bundles.
3. The energy storage type high-temperature photovoltaic and photothermal integrated power generation system according to claim 1, wherein the heat exchange medium (12) is any one of supercritical carbon dioxide, water, heat transfer oil and molten salt.
4. The energy storage type high-temperature photovoltaic and photothermal integrated power generation system according to claim 1, wherein the spectral reflection film (4) is a convex mirror.
5. The energy storage type high-temperature photovoltaic and photothermal integrated power generation system according to claim 1, wherein the light concentration system (2) is a tower heliostat field or a dish collector array.
6. The energy storage type high-temperature photovoltaic and photothermal integrated power generation system according to claim 1, wherein the low-temperature storage tank (5) and the high-temperature storage tank (6) adopt any one of heat transfer oil heat storage, low-temperature molten salt heat storage, phase change heat storage and solid heat storage systems.
7. The energy storage type high-temperature photovoltaic and photothermal integrated power generation system according to claim 1, wherein the turbine system (8) is a steam turbine or a supercritical carbon dioxide turbine system.
8. The energy storage type high-temperature photovoltaic and photothermal integrated power generation system according to claim 1, wherein a cooling system (9) is further arranged between the inlet end of the turbine system (8) and the heat exchange system (7).
9. An energy storage type high-temperature photovoltaic and photothermal integrated power generation method, based on the system of any one of claims 1 to 8, comprising,
the light condensing system (2) reflects the direct radiation of the sun to the heating surface of the heat absorption cavity (1) and the spectral reflection film (4);
reflected solar radiation mid-infrared rays and far-infrared rays are absorbed by the heat absorption cavity (1), and ultraviolet rays and visible light rays are projected to the high-concentration photovoltaic cell panel (3) through the spectral reflection film (4) to generate electricity and then are sent out;
the heat absorbed by the heat absorption cavity (1) is sent to the high-temperature storage tank (6) through the heat exchange medium (12), the heat transfer fluid in the high-temperature storage tank (6) transfers the heat to the power generation working medium through the heat exchange system (7), and the power generation working medium works in the turbine system (8) to drive the power generator (10) to generate power and then is sent out;
the high-concentration photovoltaic cell panel (3) and the generator (10) generate electricity together.
10. The energy storage type high-temperature photovoltaic and photothermal integrated power generation method according to claim 9, wherein the deflection angle of the light condensing system (2) is adjusted according to the radiation angle of the sun.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115096006A (en) * | 2022-07-06 | 2022-09-23 | 华东交通大学 | Material dehumidifying and drying system and method based on solar spectrum frequency division |
| WO2023093040A1 (en) * | 2021-11-25 | 2023-06-01 | 西安热工研究院有限公司 | Energy storage type high-temperature photovoltaic and photothermal integrated power generation system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014889A (en) * | 2016-06-17 | 2016-10-12 | 西安交通大学 | Tower type solar photo-thermal and photovoltaic combined power generating system |
| US20180041158A1 (en) * | 2015-02-15 | 2018-02-08 | Institute Of Engineering Thermophysics Chinese Academy Of Sciences | Photovoltaic-Photothermal Reaction Complementary Full-Spectrum Solar Utilization System |
| CN108444117A (en) * | 2018-05-17 | 2018-08-24 | 山东建筑大学 | A kind of device and method of solar energy hot-cast socket and the composite heat supply of accumulation of energy |
| US20180358923A1 (en) * | 2015-07-29 | 2018-12-13 | Bolymedia Holding Co. Ltd. | Enclosed solar energy utilization device and system |
| CN208567166U (en) * | 2018-06-27 | 2019-03-01 | 甘肃光热发电有限公司 | A kind of photo-thermal power generation solar collecting device |
| CN214499328U (en) * | 2021-01-29 | 2021-10-26 | 中国能源建设集团规划设计有限公司 | Power generation system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010083285A1 (en) * | 2009-01-15 | 2010-07-22 | Sunlight Power, Inc. | Ground-based, integrated volumetric receiver-storage system for concentrated solar power |
| CN107026609A (en) * | 2017-05-03 | 2017-08-08 | 杭州凌萤科技有限公司 | Camber reflection condensing solar opto-electronic photo-thermal spectral utilizes device |
| CN111271882A (en) * | 2020-02-04 | 2020-06-12 | 华北电力大学 | Long-life spectrum light splitting and light condensing integrated photovoltaic thermal module, system and method |
| CN114094915B (en) * | 2021-11-25 | 2024-01-23 | 西安热工研究院有限公司 | Energy storage type high-temperature photovoltaic and photo-thermal integrated power generation system and method |
-
2021
- 2021-11-25 CN CN202111417539.3A patent/CN114094915B/en active Active
-
2022
- 2022-06-28 WO PCT/CN2022/102086 patent/WO2023093040A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180041158A1 (en) * | 2015-02-15 | 2018-02-08 | Institute Of Engineering Thermophysics Chinese Academy Of Sciences | Photovoltaic-Photothermal Reaction Complementary Full-Spectrum Solar Utilization System |
| US20180358923A1 (en) * | 2015-07-29 | 2018-12-13 | Bolymedia Holding Co. Ltd. | Enclosed solar energy utilization device and system |
| CN106014889A (en) * | 2016-06-17 | 2016-10-12 | 西安交通大学 | Tower type solar photo-thermal and photovoltaic combined power generating system |
| CN108444117A (en) * | 2018-05-17 | 2018-08-24 | 山东建筑大学 | A kind of device and method of solar energy hot-cast socket and the composite heat supply of accumulation of energy |
| CN208567166U (en) * | 2018-06-27 | 2019-03-01 | 甘肃光热发电有限公司 | A kind of photo-thermal power generation solar collecting device |
| CN214499328U (en) * | 2021-01-29 | 2021-10-26 | 中国能源建设集团规划设计有限公司 | Power generation system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023093040A1 (en) * | 2021-11-25 | 2023-06-01 | 西安热工研究院有限公司 | Energy storage type high-temperature photovoltaic and photothermal integrated power generation system and method |
| CN115096006A (en) * | 2022-07-06 | 2022-09-23 | 华东交通大学 | Material dehumidifying and drying system and method based on solar spectrum frequency division |
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