CN111457604A - Novel flat-plate solar heat absorber and heat collecting system thereof - Google Patents
Novel flat-plate solar heat absorber and heat collecting system thereof Download PDFInfo
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- CN111457604A CN111457604A CN202010345350.7A CN202010345350A CN111457604A CN 111457604 A CN111457604 A CN 111457604A CN 202010345350 A CN202010345350 A CN 202010345350A CN 111457604 A CN111457604 A CN 111457604A
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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
- F24S10/50—Solar heat collectors using working fluids the working fluids being conveyed between plates
- F24S10/504—Solar heat collectors using working fluids the working fluids being conveyed between plates having conduits formed by paired non-plane plates
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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
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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
- F24S70/10—Details of absorbing elements characterised by the absorbing material
- F24S70/12—Details of absorbing elements characterised by the absorbing material 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
- F24S70/20—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/30—Arrangements for connecting the fluid circuits of solar collectors with each other or with other components, e.g. pipe connections; Fluid distributing means, e.g. headers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/60—Thermal insulation
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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
- F24S2070/62—Heat traps
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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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Abstract
The invention discloses a novel flat plate solar heat absorber, which comprises double-layer heat absorbing plates, a circulating pipe, a collecting pipe and a supporting clamp, wherein the upper layer and the lower layer of the double-layer heat absorbing plates are symmetrical in structure, each layer is provided with at least one special-shaped plate, when the number of the special-shaped plates is larger than one, a plurality of special-shaped plates are arranged side by side, and the supporting clamp is spliced with one another to form a whole; the special-shaped plate is provided with a plurality of grooves which have fixed intervals and are parallel to each other; the upper and lower grooves of the double-layer heat absorbing plate are mutually buckled to form a hollow circular tube; the circulating pipe penetrates into the hollow round pipe and is tightly contacted and fixed with the hollow round pipe; the upper end and the lower end of the circulating pipe are respectively connected with two collecting pipes along the horizontal direction to respectively provide a passage for cold water and hot water to form waterway circulation. The invention also discloses a heat collecting system made of the heat absorbing body. The invention improves the heat collection efficiency, can provide better heat preservation effect, can turn the plate core for continuous use after the sunny side reaches the service life limit, saves the use cost of users and prolongs the service life.
Description
Technical Field
The invention relates to the technical field of solar equipment, in particular to a novel flat plate solar heat absorber and a heat collection system thereof.
Background
The flat solar energy is more and more accepted by consumers as a novel solar energy due to convenient installation and use. At present, the heat collection efficiency of common flat plate solar heat absorbers on the market can reach about 0.95, but the service lives of the flat plate solar heat absorbers are about ten years basically, new products can be bought for replacement after the heat absorbers reach the service life limit, the use cost is high, the assembly process is complex, and the manufacturing cost is high.
Chinese patent application CN 209197174U discloses a flat solar panel core, including thermal-arrest diaphragm, medium runner, cold medium inlet connecting pipe and heat medium outlet connecting pipe respectively with the entry and the exit linkage of medium runner, the medium runner is the copper pipe, be provided with the semicircular groove that is used for inlaying the medium runner on the thermal-arrest diaphragm, the notch of semicircular groove sets up with the sunlight irradiation direction back of the body mutually, the axial of semicircular groove sets up with the long limit direction syntropy of thermal-arrest diaphragm, be provided with wavy thermal-arrest cambered surface on the thermal-arrest diaphragm, the cambered surface of thermal-arrest cambered surface sets up with the cambered surface syntropy of semicircular groove, the axial of thermal-arrest cambered surface sets up with the axial syntropy of semicircular groove, the thermal-arrest cambered surface sets up along the direction that the medium flows. According to the flat plate type solar panel core provided by the invention, the semi-circular groove is added to the traditional flat plate type heat collecting membrane plate, so that the contact area between the medium flow passage and the heat collecting membrane plate is increased, the heat conduction efficiency is improved, meanwhile, the wave-shaped heat collecting cambered surface of the heat collecting membrane plate is added, the heat collecting area is increased, the heat collecting efficiency is improved, and the heat collecting effect is ensured. According to the invention, the medium flow channel is fixed in the semicircular groove of the heat collection membrane plate, and the wave-shaped heat collection cambered surface is arranged on the heat collection membrane plate to improve the heat collection efficiency, but the heat collection cambered surface can cause the manufacturing cost to be greatly increased during the specific manufacturing, the industrial production process is complicated, and the problem that the service life of the existing solar energy is not ideal in practical use can not be overcome.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a novel flat-plate solar heat absorber and a heat collecting system thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a novel flat plate solar heat absorber comprises double-layer heat absorbing plates, a circulating pipe, a collecting pipe and a supporting clamp, wherein the upper layer and the lower layer of the double-layer heat absorbing plates are symmetrical in structure, each layer is provided with at least one special-shaped plate, when the number of the special-shaped plates is larger than one, a plurality of special-shaped plates are arranged side by side and are spliced with each other by the supporting clamp to form a whole; the special-shaped plate is provided with a plurality of grooves which have fixed intervals and are parallel to each other; the upper and lower grooves of the double-layer heat absorbing plate are mutually buckled to form a hollow circular tube; the inner diameter of the hollow circular pipe is consistent with the outer diameter of the circular pipe; the circulating pipe penetrates into the hollow round pipe and is tightly contacted and fixed with the hollow round pipe, and the heat absorbed by the heat absorbing plate can be transmitted into the circulating pipe as much as possible by tightly attaching the hollow round pipe and the circulating pipe to form an integral high-efficiency pipe plate heat transfer structure; the upper end and the lower end of the circulating pipe are respectively connected with two collecting pipes along the horizontal direction, one end of each collecting pipe is provided with a plug, the other end of each collecting pipe is connected with a pipeline connected with the heat preservation water tank, the middle of each collecting pipe of the large heat absorbing body formed by the plurality of special-shaped plates is hermetically connected through a collecting pipe joint, and the collecting pipe joint is a threaded movable joint and respectively provides a passage for cold water and hot water so as to form water path circulation in the whole heat absorbing body.
The special-shaped plate is a metal plate coated with a black coating, a pure black or inorganic or organic nonmetal plate coated with a black coating.
The metal plate coated with the black coating is a stainless steel plate or an aluminum alloy plate coated with the black coating, the thickness of a stainless steel plate substrate can be as low as 0.5mm, the thickness of an aluminum alloy plate substrate can be as low as 0.8mm, and the thickness of the black coating can be as low as 0.1 mm.
The pure black or black coating-coated inorganic or organic non-metal plate is a pure black toughened glass plate, a black coating-coated toughened glass plate, a pure black high-strength ceramic plate, a black coating-coated high-strength ceramic plate, a pure black organic temperature-resistant glass plate or a black coating-coated organic temperature-resistant glass plate, the thickness of the toughened glass plate substrate can be as low as 1mm, the thickness of the high-strength ceramic plate can be as low as 2mm, the thickness of the organic temperature-resistant glass plate substrate can be as low as 0.5mm, and the thickness of the black coating can be as low as 0.1 mm.
The sunlight absorptivity of the pure black toughened glass plate, the pure black high-strength ceramic plate, the pure black organic temperature-resistant glass plate and the coating black coating is more than or equal to 0.95, and the radiance is less than or equal to 0.1.
The pure black toughened glass plate is manufactured by adding a black coloring agent and a flatting agent into toughened glass.
The pure black high-strength ceramic plate is prepared from clay powder, a black coloring agent and aluminum powder in a mass ratio of 20-30: 40-50: 20-30, and dry pressing and firing by using a ceramic dry pressing machine.
The pure black organic temperature-resistant glass plate is manufactured by adding black coloring agent and delustering agent into organic temperature-resistant glass.
The black coating is prepared from thermosetting water-based resin, a black coloring agent, a flatting agent and a diluent according to a mass ratio of 45-50: 30-35: 3-5: 10-15, and mixing, spraying and curing.
The black colorant is one or a mixture of more of copper oxide, manganese dioxide, ferroferric oxide, ferrous oxide, chromium oxide, titanium oxide, cobaltosic oxide, nickelous trioxide or manganous manganic oxide.
The circulating pipe is an aluminum alloy pipe, a copper alloy pipe or a stainless steel pipe.
The materials used in the invention are all the existing materials, for example, the type JONCRY L HPD671 thermosetting water-based resin manufactured by German Basff company can be used as the thermosetting water-based resin, the type L EE-B flatting agent manufactured by Suzhou na engineering materials GmbH can be used as the flatting agent, and the used thinner is the common thinner in the chemical field and is not described again.
The double-layer heat absorbing plate made of the materials can effectively improve the heat collection efficiency of a solar heat absorbing body in actual use, and can provide a better heat preservation effect.
A novel flat plate solar heat collecting system comprises a solar heat absorber, a heat insulating material and a toughened glass plate, wherein the outer edge of the solar heat absorber is sealed and fixed through a frame, a collecting pipe of the solar heat absorber is communicated with a heat insulating water tank through a circulating water pump, a layer of heat insulating material is laid on the lower side of the solar heat absorber, and the heat insulating material is tightly fixed on the lower side surface of a double-layer heat absorbing plate through a supporting clamp; the upper side of the solar heat absorber is covered with a layer of toughened glass plate, and the toughened glass plate is fixed on the upper side of the support clamp through high-strength glass cement.
The heat insulation material is a polyurethane material, a glass wool material, an aerogel felt or a rubber material. The problem that the pipeline bursts due to the fact that the internal water is frozen and frozen in cold weather can be avoided, and the fact that the temperature of the water in the collecting pipe is lowered due to too low ambient temperature can be avoided after the water in the collecting pipe is heated.
When the heat collection system works, water in the heat preservation water tank is pumped into the heat absorption body circulating pipe through the lower collecting pipe by the circulating water pump, and then is conveyed back to the heat preservation water tank through the upper collecting pipe to form a circulating system together with the heat preservation water tank. The heat collecting system absorbs solar energy through the heat absorbing body and transfers heat to water in the circulating pipe, and the circulation is repeated in such a way, so that the water temperature in the heat-insulating water tank is gradually increased.
The invention has the beneficial effects that: compared with the common flat plate solar heat absorber in the market at present, the novel flat plate solar heat absorber and the heat collection system thereof provided by the invention have the advantages that the heat absorber has higher heat collection efficiency through the grooves of the double-layer heat absorber plates and the nested circulating tube structure; the double-layer heat absorption plate is symmetrically designed in structure, so that the service life is doubled, and the use cost of a user is saved; the supporting clamp has the function of supporting the toughened glass, so that the supporting frame is replaced, the material consumption of the supporting frame is greatly reduced, and the construction cost is reduced.
Drawings
Fig. 1 is a top view of the novel flat panel solar absorber of the present invention;
FIG. 2 is a schematic illustration of the alignment of a double-layer absorber plate and a support clip according to the present invention;
FIG. 3 is a cross-sectional view of a two layer absorber plate of the present invention;
FIG. 4 is a cross-sectional view of the circulation tube of the present invention;
FIG. 5 is a cross-sectional view A-A of FIG. 1;
wherein, 1, double-layer heat absorbing plate; 2. a circulation pipe; 3. a header; 31. a collector joint; 32. a collecting pipe plug; 4. a support clip; 5. tempering the glass plate; 6. a thermal insulation material; 11. and (4) a groove.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are for understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined in the claims, and are not essential to the art, and any structural modifications, changes in proportions, or adjustments in size, which do not affect the efficacy and attainment of the same are intended to fall within the scope of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Example 1.
As shown in fig. 1-4, the novel flat plate solar heat absorber comprises a double-layer heat absorbing plate 1, a circulating pipe 2, a collecting pipe 3 and a supporting clamp 4, wherein the upper layer and the lower layer of the double-layer heat absorbing plate 1 are symmetrical in structure, each layer is provided with at least one special-shaped plate, when the number of the special-shaped plates is larger than one, a plurality of special-shaped plates are arranged side by side and are spliced by the supporting clamp 4 to form a whole. The special-shaped plate is a metal plate coated with a black coating, a pure black or inorganic or organic nonmetal plate coated with a black coating.
The metal plate coated with the black coating is a stainless steel plate or an aluminum alloy plate coated with the black coating, the thickness of a stainless steel plate substrate can be as low as 0.5mm, the thickness of an aluminum alloy plate substrate can be as low as 0.8mm, and the thickness of the black coating can be as low as 0.1 mm.
The pure black or black coating-coated inorganic or organic non-metal plate is a pure black toughened glass plate, a black coating-coated toughened glass plate, a pure black high-strength ceramic plate, a black coating-coated high-strength ceramic plate, a pure black organic temperature-resistant glass plate or a black coating-coated organic temperature-resistant glass plate, the thickness of the toughened glass plate substrate can be as low as 1mm, the thickness of the high-strength ceramic plate can be as low as 2mm, the thickness of the organic temperature-resistant glass plate substrate can be as low as 0.5mm, and the thickness of the black coating can be as low as 0.1 mm.
The sunlight absorptivity of the pure black toughened glass plate, the pure black high-strength ceramic plate, the pure black organic temperature-resistant glass plate and the coating black coating is more than or equal to 0.95, and the radiance is less than or equal to 0.1. The pure black toughened glass plate is made by adding black coloring agent and flatting agent into toughened glass.
The pure black high-strength ceramic plate is prepared from clay powder, a black coloring agent and aluminum powder in a mass ratio of 20-30: 40-50: 20-30, and dry pressing and firing by using a ceramic dry pressing machine. The pure black organic temperature-resistant glass plate is manufactured by adding black coloring agent and delustering agent into organic temperature-resistant glass.
The black coating is prepared from thermosetting water-based resin, a black coloring agent, a flatting agent and a diluent according to a mass ratio of 45-50: 30-35: 3-5: 10-15, and mixing, spraying and curing. The black colorant is one or more of copper oxide, manganese dioxide, ferroferric oxide, ferrous oxide, chromium oxide, titanium oxide, cobaltosic oxide, nickelous trioxide or manganous manganic oxide.
The special-shaped plate is provided with a plurality of grooves 11 which have fixed intervals and are parallel to each other; the upper and lower grooves 11 of the double-layer heat absorbing plate 1 are respectively in one-to-one correspondence, and each pair of grooves 11 form a hollow cylinder; the circulating pipe 2 is tightly nested in the hollow cylinder and fixed through the cylindrical cavity, the step of welding and fixing can be reduced in the manufacturing process, the manufacturing cost is reduced, the circulating pipe 2 and the groove 11 are tightly attached to form a pipe plate heat transfer structure, and the heat absorbed by the double-layer heat absorbing plate 1 can be transferred into the circulating pipe 2 as much as possible, so that the liquid in the pipe is rapidly heated, and the heat collecting efficiency of the heat absorbing body is improved.
The circulating pipe 2 is an aluminum alloy pipe, a copper alloy pipe or a stainless steel pipe. The upper end and the lower end of the circulating pipe 2 are respectively connected with a collecting pipe 3 along the horizontal direction, the two ends of the collecting pipe 3 are respectively provided with a collecting pipe plug 32, the middle of the collecting pipe 3 is provided with a collecting pipe joint 31, and the collecting pipe joints 31 are connected in a threaded sealing manner and respectively provide a passage for cold water and hot water, so that the whole heat absorbing body forms complete water path circulation.
The double-layer heat absorbing plate 1 made of the material effectively reduces the whole weight of the heat absorbing body, is convenient for installation personnel to carry out installation operation, and can effectively improve the heat collection efficiency of the solar heat absorber in actual use, the double-layer heat absorbing plate 1 is symmetrically designed, any surface can face the sun upwards, the traditional heat absorbing plate needs to be integrally replaced after the aging reaches the service life limit, however, the upper and lower surfaces of the double-layer heat absorbing plate 1 are designed to be symmetrical in structure, and when the sunward surface reaches the service life limit, the supporting clamp 4 can be detached, the upper surface and the lower surface of the double-layer heat absorbing plate 1 are turned over, the heat absorbing plate which can not be used continuously is replaced below the heat absorbing body, then the supporting clamp 4 is used for fixing the double-layer heat absorbing plate 1, therefore, the service life of the heat absorber can be prolonged by one time, the use cost of a user is effectively reduced, the practical use value is high, and the concept of energy conservation and environmental protection is met.
Example 2.
As shown in fig. 5, the novel flat plate solar heat collecting system comprises a solar heat absorber, a tempered glass plate 5 and a heat insulating material 6. The solar heat absorber comprises a double-layer heat absorbing plate 1, a circulating pipe 2, a collecting pipe 3 and a supporting clamp 4, wherein the double-layer heat absorbing plate 1 is formed by splicing a plurality of special-shaped plates, the special-shaped plates are arranged in parallel front and back, left and right and connected through the supporting clamp 4. The outer edge of the solar heat absorbing body is sealed and fixed through a frame, and a collecting pipe of the solar heat absorbing body is communicated with the heat preservation water tank through a circulating water pump. The special-shaped plate is a metal plate coated with a black coating, a pure black or inorganic or organic nonmetal plate coated with a black coating. The metal plate coated with the black coating is a stainless steel plate or an aluminum alloy plate coated with the black coating, the thickness of a stainless steel plate substrate can be as low as 0.5mm, the thickness of an aluminum alloy plate substrate can be as low as 0.8mm, and the thickness of the black coating can be as low as 0.1 mm.
The pure black or black coating-coated inorganic or organic non-metal plate is a pure black toughened glass plate, a black coating-coated toughened glass plate, a pure black high-strength ceramic plate, a black coating-coated high-strength ceramic plate, a pure black organic temperature-resistant glass plate or a black coating-coated organic temperature-resistant glass plate, the thickness of the toughened glass plate substrate can be as low as 1mm, the thickness of the high-strength ceramic plate can be as low as 2mm, the thickness of the organic temperature-resistant glass plate substrate can be as low as 0.5mm, and the thickness of the black coating can be as low as 0.1 mm.
The sunlight absorptivity of the pure black toughened glass plate, the pure black high-strength ceramic plate, the pure black organic temperature-resistant glass plate and the coating black coating is more than or equal to 0.95, and the radiance is less than or equal to 0.1. The pure black toughened glass plate is made by adding black coloring agent and flatting agent into toughened glass.
The pure black high-strength ceramic plate is prepared from clay powder, a black coloring agent and aluminum powder in a mass ratio of 20-30: 40-50: 20-30, and dry pressing and firing by using a ceramic dry pressing machine. The pure black organic temperature-resistant glass plate is manufactured by adding black coloring agent and delustering agent into organic temperature-resistant glass.
The black coating is prepared from thermosetting water-based resin, a black coloring agent, a flatting agent and a diluent according to a mass ratio of 45-50: 30-35: 3-5: 10-15, and mixing, spraying and curing. The black colorant is one or more of copper oxide, manganese dioxide, ferroferric oxide, ferrous oxide, chromium oxide, titanium oxide, cobaltosic oxide, nickelous trioxide or manganous manganic oxide.
The special-shaped plate is provided with a plurality of grooves 11, the grooves 11 are buckled up and down to form a hollow cylinder, the inner diameter of the hollow cylinder is consistent with the outer diameter of the circulating pipe 2, the circulating pipe 2 is fixed inside, and the upper end and the lower end of the circulating pipe 2 are respectively connected with a collecting pipe 3 along the horizontal direction; a layer of heat insulation material 6 is laid on the lower side of the solar heat absorber, and the heat insulation material 6 is a polyurethane material, a glass wool material, an aerogel felt or a rubber material. The heat insulation material 6 is tightly fixed on the lower side surface of the double-layer heat absorption plate through the supporting clamp, the problem that the pipeline bursts due to the fact that the internal water is frozen and frozen in cold weather can be solved by adding the layer of heat insulation material 6, and the problem that the temperature of the water in the collecting pipe is reduced due to the fact that the environmental temperature is too low after the water in the collecting pipe is heated can be avoided; the upper side of the solar heat absorber is covered with a layer of toughened glass plate 5, and the toughened glass plate 5 is fixed on the upper side of the support clamp 4 through high-strength glass cement.
When the heat collection system works, water in the heat preservation water tank is pumped into the heat absorption body circulating pipe through the lower collecting pipe by the circulating water pump, and then is conveyed back to the heat preservation water tank through the upper collecting pipe to form a circulating system together with the heat preservation water tank. The heat collecting system absorbs solar energy through the heat absorbing body and transfers heat to water in the circulating pipe, and the circulation is repeated in such a way, so that the water temperature in the heat-insulating water tank is gradually increased.
Compared with the common flat plate solar energy in the market at present, the novel flat plate solar energy heat collecting system provided by the invention has the advantages that the heat absorbing body has higher heat collecting efficiency through the grooves of the double-layer heat absorbing plates and the nested circulating pipe structure; the double-layer heat absorption plate is symmetrically designed in structure, so that the service life is doubled, and the use cost of a user is saved; the supporting clamp 4 has the function of supporting toughened glass, so that a supporting frame is replaced, the material consumption of the supporting frame is greatly reduced, and the construction cost is reduced.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. A novel flat plate solar heat absorber comprises double-layer heat absorbing plates, a circulating pipe, a collecting pipe and a supporting clamp, and is characterized in that the upper layer and the lower layer of the double-layer heat absorbing plates are symmetrical in structure, each layer is provided with at least one special-shaped plate, when the number of the special-shaped plates is larger than one, a plurality of special-shaped plates are arranged side by side, and the supporting clamp is spliced with one another to form a whole; the special-shaped plate is provided with a plurality of grooves which have fixed intervals and are parallel to each other; the upper and lower grooves of the double-layer heat absorbing plate are mutually buckled to form a hollow circular tube; the circulating pipe penetrates into the hollow circular pipe and is tightly contacted and fixed with the hollow circular pipe; the upper end and the lower end of the circulating pipe are respectively connected with two collecting pipes along the horizontal direction to respectively provide a passage for cold water and hot water, so that a waterway circulation is formed in the whole heat absorbing body.
2. The novel flat panel solar absorber according to claim 1 wherein the grooves of the double absorber plate are positioned in a one-to-one correspondence, each pair of grooves engaging each other to form a hollow tube.
3. The novel flat panel solar absorber according to claim 2, wherein the hollow circular tube has an inner diameter corresponding to the outer diameter of the circulation tube, and the hollow circular tube and the circulation tube are tightly nested and fixed.
4. The novel flat panel solar absorber according to claim 1 wherein said manifold has manifold plugs at each end and a manifold connector in the middle, said manifold connectors being sealed by threads.
5. The novel flat panel solar absorber according to claim 1, wherein said shaped sheet is a black coated metal sheet, a pure black or black coated inorganic or organic non-metallic sheet.
6. The novel flat plate solar absorber according to claim 5, wherein the black coating coated metal plate is a black coating coated stainless steel plate or aluminum alloy plate, and the black coating is prepared from a thermosetting water-based resin, a black coloring agent, a matting agent and a diluent in a mass ratio of 45-50: 30-35: 3-5: 10-15, wherein the black colorant is one or more of copper oxide, manganese dioxide, ferroferric oxide, ferrous oxide, chromium oxide, titanium oxide, cobaltosic oxide, nickelous trioxide or manganous manganic oxide.
7. The novel flat panel solar absorber according to claim 5, wherein the inorganic or organic non-metallic plate of pure black or coated with black coating is a pure black toughened glass plate, a toughened glass plate coated with black coating, a pure black high-strength ceramic plate, a high-strength ceramic plate coated with black coating, a pure black organic temperature-resistant glass plate or an organic temperature-resistant glass plate coated with black coating, the pure black toughened glass plate is made by adding black colorant and matting agent into toughened glass, and the pure black high-strength ceramic plate is made from clay powder, black colorant and aluminum powder according to the mass ratio of 20-30: 40-50: 20-30, and firing the mixture by adopting a ceramic dry press, wherein the pure black organic temperature-resistant glass plate is prepared by adding a black coloring agent and a delustering agent into organic temperature-resistant glass, and the black coating is prepared by mixing a thermosetting water-based resin, a black coloring agent, a delustering agent and a diluent in a mass ratio of 45-50: 30-35: 3-5: 10-15, wherein the black colorant is one or more of copper oxide, manganese dioxide, ferroferric oxide, ferrous oxide, chromium oxide, titanium oxide, cobaltosic oxide, nickelous trioxide or manganous manganic oxide.
8. The novel flat panel solar absorber according to claim 1, wherein said circulation tube is an aluminum alloy tube, a copper alloy tube or a stainless steel tube.
9. A novel flat plate solar heat collecting system comprises a solar heat absorbing body, a heat insulating material and a toughened glass plate and is characterized in that the outer edge of the solar heat absorbing body is sealed and fixed through a frame, a collecting pipe of the solar heat absorbing body is communicated with a heat insulating water tank through a circulating water pump, a layer of heat insulating material is laid on the lower side of the solar heat absorbing body, and the heat insulating material is tightly fixed on the lower side surface of a double-layer heat absorbing plate through a supporting clamp; the upper side of the solar heat absorber is covered with a layer of toughened glass plate, and the toughened glass plate is fixed on the upper side of the support clamp through high-strength glass cement.
10. The new flat panel solar collector system as claimed in claim 9 wherein said insulation material is a polyurethane material, a glass wool material, an aerogel blanket or a rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010345350.7A CN111457604A (en) | 2020-04-27 | 2020-04-27 | Novel flat-plate solar heat absorber and heat collecting system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010345350.7A CN111457604A (en) | 2020-04-27 | 2020-04-27 | Novel flat-plate solar heat absorber and heat collecting system thereof |
Publications (1)
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| CN202792651U (en) * | 2012-09-12 | 2013-03-13 | 深圳市鹏桑普太阳能股份有限公司 | Solar thermal collector plate core |
| CN207865728U (en) * | 2017-11-29 | 2018-09-14 | 山东省科学院新材料研究所 | A kind of trough solar collecting system |
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| US4122833A (en) * | 1977-02-03 | 1978-10-31 | Lovelace Alan M Acting Adminis | Non-tracking solar energy collector system |
| CN101644489A (en) * | 2008-08-08 | 2010-02-10 | 深圳市顺达太阳能有限公司 | Novel solar collector plate core and manufacturing process thereof |
| CN201680617U (en) * | 2010-01-31 | 2010-12-22 | 姚德龙 | Copper-free stainless steel flat-panel solar energy super heat conduction heat collector |
| CN201852314U (en) * | 2010-09-21 | 2011-06-01 | 台州弘日光科太阳能科技有限公司 | Parallel-connection heat collection superconducting flat plate solar collector |
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| CN207865728U (en) * | 2017-11-29 | 2018-09-14 | 山东省科学院新材料研究所 | A kind of trough solar collecting system |
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