CN111271883A - Convertible control fixed slot type concentrating solar photovoltaic photo-thermal integrated system - Google Patents
Convertible control fixed slot type concentrating solar photovoltaic photo-thermal integrated system Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
- F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
- F24S10/74—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the tubular conduits are not fixed to heat absorbing plates and are not touching each other
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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
- F24S23/71—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with parabolic reflective surfaces
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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
- F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
- F24S70/20—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption
- F24S70/25—Coatings made of metallic material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
- F24S70/60—Details of absorbing elements characterised by the structure or construction
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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
- H02S40/40—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
- Y02E10/44—Heat exchange systems
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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
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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
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Abstract
A fixed slot type concentrating solar photovoltaic photo-thermal integrated system capable of being controlled in a switching mode belongs to the field of comprehensive utilization of new energy. The solar photovoltaic solar energy collecting device comprises a fixed groove type light collecting plate, a vacuum tube type solar energy collecting system, a solar photovoltaic power generation system, a controllable electric conversion system and a bracket base. The fixed groove type light gathering plate is of a fixed structure and can reflect and gather sunlight with constantly changing irradiation angles to form a light gathering focal plane. The vacuum tube type solar heat collection system is arranged on a light-gathering focal plane, the front side absorbs direct sunlight, and the back side absorbs reflected gathered sunlight and converts the gathered sunlight into heat. The solar photovoltaic power generation system is arranged at the lower part of the vacuum tube type solar heat collection system, the photovoltaic panel can be integrally moved upwards through remote control, and the position of a light condensation focal plane of the fixed groove type light condensation panel is located behind the shading heat collection system, so that conversion of solar photo-thermal utilization and solar power generation is completed. The system has the advantages of high-efficiency light condensation, photo-thermal photoelectric conversion, low cost, small weight and the like, and can realize high-efficiency comprehensive utilization of solar energy.
Description
The technical field is as follows:
the invention belongs to the field of solar photovoltaic photo-thermal comprehensive utilization, and particularly relates to a fixed-groove type concentrating solar photovoltaic photo-thermal integrated system capable of being controlled in a switching mode.
Background art:
with the environmental problems becoming severe in recent years, solar energy has become a hot spot for global research. Solar radiation energy can be directly converted into heat energy and electric energy, the application directions are mainly photo-thermal and photovoltaic, and solar thermal collectors and photovoltaic power generation systems are applied to daily life of people. The trough type solar heat collector is a main part of a trough type solar photo-thermal system and is used for converting solar energy into heat energy, so that the quality of the performance of the trough type solar heat collector directly influences the overall efficiency and cost of solar heat utilization. The existing vacuum tube type solar heat collector also has obvious defects, the glass vacuum tube is easy to scale and is not easy to discharge, the glass vacuum tube is easy to crack when the temperature difference between the inside and the outside is large, in addition, hot water in the vacuum glass tube cannot be effectively utilized, and the total efficiency of a solar water heating system is reduced. When the solar vacuum tube heat collector is used in summer, the temperature of the solar vacuum tube heat collector is too high, and therefore, the photo-thermal system and equipment are also adversely affected.
The invention content is as follows:
in view of the above defects, the present invention provides a fixed-slot type concentrating solar photovoltaic and photothermal integrated system capable of converting and controlling, which comprises a fixed-slot type concentrating plate, a vacuum tube type solar heat collecting system, a solar photovoltaic power generation system, a controllable electric conversion system and a bracket base.
The technical scheme of the invention is as follows:
the invention discloses a fixed groove type concentrating solar photovoltaic and photothermal integrated system capable of being converted and controlled. The solar heat collection system adopts a fixed and immobile mode and is connected and fixed by a bracket with two ends and a bottom; the vacuum tube type solar heat collecting system is fixed at the position of a focal plane of the groove type light-gathering plate; the front side of the vacuum tube type solar heat collection system absorbs direct sunlight, and the back side absorbs reflected converged sunlight and converts the reflected converged sunlight into heat; the solar photovoltaic system is connected to the support through a chain, and the photovoltaic panel is moved up and down according to a control command.
1. The fixed groove type light gathering plate is of a fixed structure and is welded on the base. The opening of the light-gathering plate faces upwards, and the focal plane forms an included angle of 40-50 degrees with the horizontal plane. The bracket contained in the groove type light-gathering plate is used for supporting the vacuum tube type solar heat collection system and the photovoltaic power generation system.
2. The vacuum tube type solar heat collection system is arranged in a south-north manner and forms an included angle of 40-50 degrees with the horizontal plane. Comprises a vacuum tube heat collector, a heat exchange water tube and a compound parabolic condenser (CPC for short). The vacuum tube solar heat collector consists of an outer layer glass tube, an inner layer glass tube and a middle flat plate heat conducting plate. Sunlight is reflected and condensed by the fixed groove type condensing plate, and a focal plane is located on the vacuum tube heat collectors which are arranged side by side. The vacuum tube solar heat collector absorbs the photo-heat of solar energy and then conducts upwards through the middle flat plate heat conducting plate to exchange heat with the circulating medium in the heat exchange water pipe. The CPC is mounted between the vacuum tubes to reflect sunlight between the vacuum tubes to the vacuum tube collector.
3. The fixed groove type solar photovoltaic power generation system and the solar heat collection system are in the same plane and form an included angle of 40-50 degrees with the horizontal plane. The photovoltaic power generation system comprises a solar photovoltaic panel and a heat dissipation system which are integrally fixed on a transmission chain. The heat dissipation system is installed at the back of the photovoltaic panel, and comprises a heat dissipation plate, a heat conduction metal plate and heat dissipation fins, wherein the heat dissipation plate is made of aluminum alloy, and the thickness of the heat dissipation system is 0.1-2 mm.
4. The controllable electric conversion system comprises an electric motor, a chain and a control device. The system is connected with the fixed groove type solar photovoltaic power generation system through a chain and used for remotely controlling the photovoltaic system, the whole photovoltaic panel moves upwards according to a control instruction, the position of the focal plane of the groove type light collecting panel is located behind the shielding vacuum tube, and the position of the photovoltaic and photo-thermal equipment on the focal plane is adjusted, so that the solar power generation and solar heating proportion is accurately adjusted.
The vacuum tube solar heat collector comprises a solar vacuum heat collecting tube and a middle flat plate heat conducting plate;
the solar vacuum heat collecting tube comprises an outer layer glass tube and an inner layer glass tube, the tube openings of the two layers of glass tubes are connected in a sealing mode, and the tubes are vacuumized; the outer surface of the inner glass tube is plated with a metal heat absorption film; the metal heat absorption film is formed by multi-target magnetron sputtering coating, the target is copper, aluminum, titanium, chromium or stainless steel, and the coating thickness is 100-1000 nanometers;
the middle flat plate heat-conducting plate is a copper plate, an aluminum plate, a graphene plate or a flat heat pipe, the thickness of the plate is 2-5 mm, the lower end of the middle flat plate heat-conducting plate is inserted into the solar vacuum heat-collecting tube, and the heat-exchange water pipe is directly connected with the upper end of the middle flat plate heat-conducting plate;
the solar heat collector with the vacuum tube absorbs solar energy and converts the solar energy into heat, the solar energy is upwards conducted through the middle flat plate heat conducting plate arranged in the solar energy vacuum heat collecting tube and exchanges heat with a medium in the heat exchange water pipe, and the heat is circularly taken away by the medium in the heat exchange water pipe.
The invention has the beneficial effects that:
1. the traditional linear light-gathering design is replaced by the focal plane light-gathering design of the fixed groove type light-gathering system, so that the solar photovoltaic photo-thermal utilization efficiency can be improved, the use of traditional sunlight tracking equipment is avoided, and the equipment cost is greatly reduced.
2. Meanwhile, the solar heating and solar power generation comprehensive utilization is realized, the effective utilization rate of solar energy is increased, the photo-thermal utilization and photovoltaic power generation area is reduced through light condensation, the efficiency is improved, and the cost is reduced.
3. In summer, the solar power generation proportion is increased, and the solar heating proportion is reduced, so that the adverse effect of redundant waste heat generated by solar energy and heat on the system is reduced. Through the electric conversion device, the photovoltaic panel is used for shielding the vacuum tube solar heat collector, so that higher illumination radiation intensity is obtained on a focal plane, the power generation efficiency of the photovoltaic panel is greatly improved, and adverse effects caused by overheating of the vacuum tube are avoided.
4. The solar photovoltaic and photo-thermal integrated solar energy generation system can realize solar photovoltaic and photo-thermal integrated design, greatly increase solar light-gathering energy and reduce the use amount of photovoltaic and photo-thermal equipment through the fixed groove type light-gathering equipment, thereby more efficiently utilizing solar energy for heating and power generation. Simultaneously through the position of conversion controlgear adjustment photovoltaic and light and heat system at spotlight focal plane, and then the distribution proportion of accurate adjustment solar energy power generation and solar energy heating, fixed slot type spotlight ware can save the sunlight and track transmission equipment in addition, reduces equipment cost by a wide margin, has very strong popularization prospect.
Drawings
FIG. 1-1 is a schematic view of a controllable fixed-slot solar photovoltaic-thermal integrated system
FIG. 1-2 is a schematic view of condensing light to form a focal plane
1. Fixed groove type light gathering plate 2, heat exchange water pipe 3, vacuum tube type solar heat collector 4, photovoltaic plate 5, conversion electric system 6, support 7, compound parabolic light collector 8, focal plane (virtual) 9, outer layer glass tube 10, inner layer glass tube 11, middle heat conducting metal plate 12, vacuum tube rubber plug 13, radiating fin 14, photovoltaic plate 15, heat conducting metal plate 16, conversion transmission chain 17 and controllable motor
FIG. 2 is a controllable fixed slot type solar photovoltaic photo-thermal integrated system (top view)
FIG. 3 is a partial cross-sectional view of the system
Fig. 4 is a schematic structural diagram of the present invention.
Fig. 5 is a partial schematic view of the structure of the present invention.
31. Solar vacuum heat collecting pipes; 32. a middle flat plate heat-conducting plate; 33. a heat storage water tank; 34. a support; 35. an outer layer glass tube; 36. an inner layer glass tube; 37. a water inlet; 38. a water outlet; 39. rubber plug 40, heat preservation, 41 energy storage water tank inner bag.
Detailed Description
The technical scheme of the invention is as follows:
the system comprises a fixed vacuum tube type solar heat collection system, a groove type light gathering plate, a solar photovoltaic power generation system, a controllable electric conversion system and a bracket base. The solar heat collection system adopts a fixed and immobile mode and is connected and fixed by a bracket with two ends and a bottom; the vacuum tube type solar heat collecting system is fixed at the position of a focal plane of the groove type light-gathering plate; the solar photovoltaic system is connected to the support through a chain, and the photovoltaic panel is moved up and down according to a control command.
The vacuum tube type solar heat collection system is arranged in a south-north manner and forms an included angle of 40-50 degrees with the horizontal plane. Comprises a vacuum tube solar heat collector, a heat exchange water pipe 2 and a compound parabolic concentrator (CPC for short) 7;
the vacuum tube solar heat collector comprises an outer layer glass tube 9, an inner layer glass tube 10 and a middle flat plate heat conducting plate 11;
the outer layer glass tube 9 and the inner layer glass tube 10 are connected with the tube openings of the two layers of glass tubes in a sealing manner, and the tube openings are vacuumized; the outer surface of the inner glass tube is plated with a metal heat absorption film; the metal heat absorption film is formed by multi-target magnetron sputtering coating, the target is copper, aluminum, titanium, chromium or stainless steel, and the coating thickness is 100-1000 nanometers;
the middle flat plate heat-conducting plate is a copper plate, an aluminum plate, a graphene plate or a flat plate heat pipe, the thickness of the plate is 2-5 mm, the lower end of the middle flat plate heat-conducting plate is inserted into the solar vacuum heat-collecting tube (the width of the middle flat plate heat-conducting plate is smaller than the diameter of the inner layer glass tube, and the insertion length is smaller than the length of the inner layer glass tube 10), and the heat-exchange water pipe 2 is connected with the upper end of the middle flat plate heat-conducting plate;
the fixed groove type light gathering plate is of a fixed structure and is welded on the base. The opening of the light-gathering plate faces upwards, and the focal plane forms an included angle of 40-50 degrees with the horizontal plane. The bracket contained in the fixed groove type light-gathering plate is used for supporting the vacuum tube type solar heat collection system and the photovoltaic power generation system.
Sunlight is reflected and condensed by the fixed groove type condensing plate, and a focal plane is located on the vacuum tube heat collectors which are arranged side by side. The vacuum tube solar heat collector absorbs the photo-heat of solar energy and then conducts upwards through the middle flat plate heat conducting plate to exchange heat with the circulating medium in the heat exchange water pipe. The CPC7 is installed between the evacuated collector tubes to reflect sunlight between the evacuated collector tubes to the evacuated collector tube.
The solar photovoltaic power generation system and the solar heat collection system are in the same plane and form an included angle of 40-50 degrees with the horizontal plane. The photovoltaic power generation system comprises a solar photovoltaic panel and a heat dissipation system which are integrally fixed on a transmission chain. The heat dissipation system is installed at the back of the photovoltaic panel, and comprises a heat conduction metal plate and heat dissipation fins, wherein the heat conduction metal plate and the heat dissipation fins are made of aluminum alloy, and the thickness of the heat dissipation system is 0.1-2 mm.
The controllable electric conversion system comprises an electric motor, a chain and a control device. The system is connected with the fixed groove type solar photovoltaic power generation system through a chain and used for remotely controlling the photovoltaic system, the whole photovoltaic panel moves upwards according to a control instruction, the position of the focal plane of the groove type light collecting panel is located behind the shielding vacuum tube, and the position of the photovoltaic and photo-thermal equipment on the focal plane is adjusted, so that the solar power generation and solar heating proportion is accurately adjusted.
The vacuum tube solar heat collector comprises a solar vacuum heat collecting tube 31 and an intermediate flat plate heat conducting plate 32;
the solar vacuum heat collecting tube comprises an outer layer glass tube 35 and an inner layer glass tube 36, the tube openings of the two layers of glass tubes are connected in a sealing mode, and the tubes are vacuumized; the outer surface of the inner glass tube is plated with a metal heat absorption film; the metal heat absorption film is formed by multi-target magnetron sputtering coating, the target is copper, aluminum, titanium, chromium or stainless steel, and the coating thickness is 100-1000 nanometers;
the middle flat plate heat-conducting plate is a copper plate, an aluminum plate, a graphene plate or a flat plate heat pipe, the thickness of the plate is 2-5 mm, the lower end of the middle flat plate heat-conducting plate is inserted into a solar vacuum heat-collecting tube (the width of the middle flat plate heat-conducting plate is smaller than the diameter of the inner layer glass tube, and the insertion length is smaller than the length of the inner layer glass tube 36), the heat storage water tank is connected with the upper end of the middle flat plate heat-conducting plate, and the heat storage water tank 33 is provided;
the invention has the beneficial effects that:
1. the traditional linear light-gathering design is replaced by the focal plane light-gathering design of the fixed groove type light-gathering system, so that the solar photovoltaic photo-thermal utilization efficiency can be improved, the use of traditional sunlight tracking equipment is avoided, and the equipment cost is greatly reduced.
2. Meanwhile, the solar heating and solar power generation comprehensive utilization is realized, the effective utilization rate of solar energy is increased, the photo-thermal utilization and photovoltaic power generation area is reduced through light condensation, the efficiency is improved, and the cost is reduced.
3. In summer, the solar power generation proportion is increased, and the solar heating proportion is reduced, so that the adverse effect of redundant waste heat generated by solar energy and heat on the system is reduced. Through the electric conversion device, the photovoltaic panel is used for shielding the vacuum tube solar heat collector, so that more illumination radiation intensity is obtained on a focal plane, the power generation efficiency of the photovoltaic panel is greatly improved, and the adverse effect caused by overheating of the vacuum tube is avoided.
4. The solar photovoltaic and photo-thermal integrated solar energy generation system can realize solar photovoltaic and photo-thermal integrated design, greatly increase solar light-gathering energy and reduce the use amount of photovoltaic and photo-thermal equipment through the fixed groove type light-gathering equipment, thereby more efficiently utilizing solar energy for heating and power generation. Simultaneously through the position of conversion controlgear adjustment photovoltaic and light and heat system at spotlight focal plane, and then the distribution proportion of accurate adjustment solar energy power generation and solar energy heating, fixed slot type spotlight ware can save the sunlight and track transmission equipment in addition, reduces equipment cost by a wide margin, has very strong popularization prospect.
Claims (2)
1. The utility model provides a fixed slot type spotlight type solar photovoltaic light and heat integration system of convertible control which characterized in that: the system comprises a fixed groove type light gathering plate, a vacuum tube type solar heat collecting system, a solar photovoltaic power generation system, a controllable electric conversion system and a bracket base;
the vacuum tube type solar heat collection system adopts a fixed mode and is connected and fixed by a bracket with two ends and a bottom; the vacuum tube type solar heat collecting system is fixed at the position of a focal plane of the groove type light-gathering plate; the front side of the vacuum tube type solar heat collection system absorbs direct sunlight, and the back side absorbs reflected converged sunlight and converts the reflected converged sunlight into heat;
1) the fixed groove type light gathering plate is of a fixed structure and is welded on the base; the opening of the light-gathering plate is upward, and the focal plane and the horizontal plane form an included angle of 40-50 degrees;
2) the vacuum tube type solar heat collection system comprises a vacuum tube heat collector, a heat exchange water tube and a compound parabolic condenser CPC; sunlight is reflected and condensed by a fixed groove type condensing plate, and a focal plane is positioned on vacuum tube heat collectors which are arranged side by side; the vacuum tube solar heat collector absorbs the photo-heat of solar energy and then conducts upwards through the middle flat plate heat conducting plate to exchange heat with a circulating medium in the heat exchange water pipe; the compound parabolic condenser CPC is arranged between the vacuum tubes and reflects sunlight between the vacuum tubes to the vacuum tube heat collector;
3) the solar photovoltaic power generation system and the vacuum tube type solar heat collection system are in the same plane and form an included angle of 40-50 degrees with the horizontal plane; the solar photovoltaic power generation system comprises a solar photovoltaic panel and a heat dissipation system, and is integrally fixed on the transmission chain; the solar photovoltaic power generation system is connected to the bracket by a chain and enables the photovoltaic panel to move up and down according to a control instruction;
4) the controllable electric conversion system comprises a motor, a chain and a control device; the controllable electric conversion system is connected with the solar photovoltaic power generation system through a chain and used for remotely controlling the photovoltaic system, the photovoltaic panel moves upwards according to a control instruction, the position of the focal plane of the fixed groove type collecting plate is located behind the shielding vacuum tube, and the position of the photovoltaic and photo-thermal equipment on the focal plane is adjusted, so that the solar power generation and solar heating proportion is adjusted.
2. The switchably controllable fixed-channel concentrating solar PV/photothermal integrated system according to claim 1, wherein: the vacuum tube solar heat collector comprises a solar vacuum heat collecting tube and a middle flat plate heat conducting plate;
the solar vacuum heat collecting tube comprises an outer layer glass tube and an inner layer glass tube, the tube openings of the two layers of glass tubes are connected in a sealing mode, and the tubes are vacuumized; the outer surface of the inner glass tube is plated with a metal heat absorption film; the metal heat absorption film is formed by multi-target magnetron sputtering coating, the target is copper, aluminum, titanium, chromium or stainless steel, and the coating thickness is 100-1000 nanometers;
the middle flat plate heat-conducting plate is a copper plate, an aluminum plate, a graphene plate or a flat heat pipe, the thickness of the plate is 2-5 mm, the lower end of the middle flat plate heat-conducting plate is inserted into the solar vacuum heat-collecting tube, and the heat-exchange water pipe is directly connected with the upper end of the middle flat plate heat-conducting plate;
the solar heat collector with the vacuum tube absorbs solar energy and converts the solar energy into heat, the solar energy is upwards conducted through the middle flat plate heat conducting plate arranged in the solar energy vacuum heat collecting tube and exchanges heat with a medium in the heat exchange water pipe, and the heat is circularly taken away by the medium in the heat exchange water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010110058.7A CN111271883A (en) | 2020-02-23 | 2020-02-23 | Convertible control fixed slot type concentrating solar photovoltaic photo-thermal integrated system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010110058.7A CN111271883A (en) | 2020-02-23 | 2020-02-23 | Convertible control fixed slot type concentrating solar photovoltaic photo-thermal integrated system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114440471A (en) * | 2020-11-05 | 2022-05-06 | 广西大学 | Photovoltaic solar water heater integrated device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114440471A (en) * | 2020-11-05 | 2022-05-06 | 广西大学 | Photovoltaic solar water heater integrated device |
| CN114440471B (en) * | 2020-11-05 | 2023-12-05 | 广西大学 | Photovoltaic solar water heater integrated device |
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