CN108645062A - A kind of solar energy heating film - Google Patents
A kind of solar energy heating film Download PDFInfo
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- CN108645062A CN108645062A CN201810349984.2A CN201810349984A CN108645062A CN 108645062 A CN108645062 A CN 108645062A CN 201810349984 A CN201810349984 A CN 201810349984A CN 108645062 A CN108645062 A CN 108645062A
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- film
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- energy heating
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Classifications
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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
- F24S70/30—Auxiliary coatings, e.g. anti-reflective coatings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention belongs to solar energy heating technical field of membrane, disclose a kind of solar energy heating film, including substrate, and are covered in the infrared reflecting layer W films stacked gradually in substrate, first medium antireflection layer Al2O3Film, the first metal absorption layer W films, second medium antireflection layer Al2O3Film, the second metal absorption layer W films and third medium antireflection layer Al2O3Film；This solar energy heating film provided by the invention is by Al2O3Film and W films are alternately stacked, since the wavelength of constructive interference is larger by the thickness effect of each layer of film, it only needs the thickness for changing wherein a few layer films that can realize the adjusting to collecting hotting mask skin color, can show including the multiple colors such as blue, green, yellow green, yellow, purple and pink；And the collection hotting mask reaches 94% or more to the absorptivity of 300nm~2500nm solar energy collection medium wave bands, for 2500nm band above reflectivity up to 95% or more, while efficient absorption solar energy, also reduce the energy loss that heat emission is brought.
Description
Technical field
The invention belongs to solar energy heating technical field of membrane, more particularly, to a kind of high temperature resistant, can show a variety of face
The collection hotting mask of color, efficient absorption solar energy.
Background technology
Solar energy heating film is a kind of multilayer in ultraviolet, visible light and near-infrared with high-absorbility and antiradar reflectivity
Film may be implemented the higher absorption to solar energy, while can reduce heat radiation, reduce energy loss.As solar heat is answered
(100 are applied from cryogenic applications (≤100 DEG C) to medium temperature with the application range of the development of demand and technology, solar energy heating film
DEG C~400 DEG C) and high temperature application (>400 DEG C) development, to meet the requirement of every field, to the resistance to of solar energy heating film
High temperature requirement is also gradually increased；Compared to monochromatic solar thermal collector, the application demand of colored solar heat collector is more, needs
In the case where not influencing thermal-arrest film properties, the adjustability of collection hotting mask color is realized.
Prior art discloses for example Al-AlN composite materials, W/WAlN/WAlON/Al2O3Multilayer film, medium/metal are more
The solar energy heating membrane system of the Color tunables such as the layer adjustable sunlight heat absorber coatings of structural color.Wherein Al-AlN composite materials
Pass through Al and N2Reactive magnetron sputtering obtains, by controlling N in chamber2Concentration obtain 4 kinds of different Al-AlN composite woods
The thickness of the bed of material, top layer is adjustable, realizes that the adjusting to color, the thickness of remainder layer are fixed with this, the collection hotting mask is in certain face
Absorptivity under color only has 85%.W/WAlN/WAlON/Al2O3Multilayer film is with W, Al and Al2O3For target, DC/RF magnetic controls are used
It sputters in stainless steel base and is coated with W, WAlN, WAlON and Al successively2O3Totally 4 layer film, the absorbing film average absorption ratio is higher,
But the color that can be realized is few；The sunlight heat absorber coatings of medium/metal multilayered structure Color tunable, such as using multiple material
Cu、Ti、Ag、Cr、AlN、Al2O3、SiO2Etc. compositions medium/metal plural layers, multiple color, but the absorption may be implemented
Material used in film is more, and performance is unknown under its high temperature.
Invention content
Extremely a little less in disadvantages described above or Improvement requirement for the prior art, the present invention provides a kind of solar energy collection
Hotting mask its object is to realize the adjustability of multiple color while meeting high temperature resistant demand, and improves collection hotting mask to the sun
The absorptivity of energy.
To achieve the above object, according to one aspect of the present invention, a kind of solar energy heating film, including substrate are provided,
And it is covered in the infrared reflecting layer W films stacked gradually in substrate, first medium antireflection layer Al2O3Film, the first metal absorption layer
W films, second medium antireflection layer Al2O3Film, the second metal absorption layer W films and third medium antireflection layer Al2O3Film.
Preferably, above-mentioned solar energy heating film, infrared reflecting layer W film thicknesses are 60nm~150nm；Make solar energy collection
Hotting mask reaches 90% or more for the reflectivity of mid and far infrared wave band, reduces the energy loss that heat radiation is brought, and to it is ultraviolet, can
Light-exposed and near-infrared absorptivity reaches 90% or more.
Preferably, above-mentioned solar energy heating film, first medium antireflection layer Al2O3Film thickness is 50nm~100nm, is had
Effect reduces the reflectivity in 300nm~2500nm wave bands so that collection hotting mask keeps good absorption characteristic.
Preferably, above-mentioned solar energy heating film, the first metal absorption layer W film thicknesses are 8nm~15nm, to increase thermal-arrest
Absorption of the film to ultraviolet, visible light and near infrared band energy.
Preferably, above-mentioned solar energy heating film, second medium antireflection layer Al2O3Film thickness is 60nm~80nm, to subtract
The small reflectivity in 300nm~2500nm wave bands so that collection hotting mask keeps good absorption characteristic.
Preferably, above-mentioned solar energy heating film, the second metal absorption layer W film thicknesses be 5nm~6nm, with absorb it is ultraviolet,
Visible light and near infrared band energy；After remaining energy passes through the second metal absorption layer W films, in infrared reflecting layer and the first gold medal
Progress is repeatedly reflected back and forth between belonging to absorbed layer W films, is gradually absorbed by the first metal absorption layer W films.
Preferably, above-mentioned solar energy heating film, third medium antireflection layer Al2O3Film thickness is 60nm~95nm, to have
Effect reduces the reflectivity in 300nm~2500nm wave bands so that collection hotting mask keeps good absorption characteristic.
Above-mentioned solar energy heating film provided by the invention, can be by changing medium antireflection layer, metal absorption layer and gold
Belong to the thickness in reflecting layer and bring it about variation to adjust the skin color of collection hotting mask, shows such as blue, green, yellow green, Huang
Color, purple or pink etc..
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect：
(1) solar energy heating film provided by the invention, by Al2O3Film and W films are alternately stacked, due to constructive interference
Wavelength is larger by the thickness effect of each layer of film, therefore only needs the thickness for changing wherein a few layer films that can realize to table
The adjusting of layer color can be showed including the multiple colors such as blue, green, yellow green, yellow, purple and pink；
(2) solar energy heating film provided by the invention, measured data show to 300nm~2500nm solar energy collection medium waves
Section absorptivity reach 94% or more, for 2500nm band above reflectivity up to 95% or more, in efficient absorption solar energy
While, the energy loss that heat emission is brought is reduced as much as possible.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment of solar energy heating film provided by the invention.
Fig. 2 is a kind of reflection spectrogram for blue solar energy heating film that the embodiment of the present invention 1 provides；
Fig. 3 is a kind of reflection spectrogram for green solar collection hotting mask that the embodiment of the present invention 2 provides；
Fig. 4 is a kind of reflection spectrogram for yellow green solar energy heating film that the embodiment of the present invention 3 provides；
Fig. 5 is a kind of reflection spectrogram for yellow solar energy heating film that the embodiment of the present invention 4 provides；
Fig. 6 is a kind of reflection spectrogram for purple solar energy heating film that the embodiment of the present invention 5 provides；
Fig. 7 is a kind of reflection spectrogram for pink solar energy heating film that the embodiment of the present invention 6 provides；
In all the appended drawings, identical reference numeral is used for indicating identical element or structure, wherein：A-Al2O3Film, B-W
Film, C- substrates.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
It does not constitute a conflict with each other and can be combined with each other.
The structure of the embodiment of solar energy heating film provided by the invention referring to Fig.1, including substrate, and be covered in substrate
On stack gradually infrared reflecting layer, first medium antireflection layer, the first metal absorption layer, second medium antireflection layer, second
Metal absorption layer and third medium antireflection layer.
The thickness for the high temperature resistant colour developing solar energy heating film that embodiment provides is 243nm~446nm, including medium antireflective
Layer uses Al2O3Film, metal absorption layer are translucent W films, and infrared reflecting layer is thicker W films.Infrared reflecting layer, first are situated between
Matter antireflection layer, the first metal absorption layer, second medium antireflection layer, the second metal absorption layer and third medium antireflection layer
Thickness range is followed successively by 60nm~150nm, 50nm~100nm, 8nm~15nm, 60nm~80nm, 5nm~6nm, and 60nm~
95nm。
Further explaination is done below in conjunction with specific embodiment：
Embodiment 1：
The blue solar energy heating film that embodiment 1 provides, including substrate, and stacked gradually from bottom to top in substrate
Infrared reflecting layer, first medium antireflection layer, the first metal absorption layer, second medium antireflection layer, the second metal absorption layer with
And third medium antireflection layer, overall thickness 288.5nm, wherein infrared reflecting layer W film thicknesses are 60nm, first medium antireflective
Layer Al2O3Film thickness is 90nm, and the first metal absorption layer W film thicknesses are 13nm, second medium antireflection layer Al2O3Film thickness is
60nm, the second metal absorption layer W film thicknesses are 5.5nm, third medium antireflection layer Al2O3Film thickness is 60nm.
Fig. 2 show the reflectance spectrum of the blue solar energy heating film of the embodiment of the present invention 1, the sun of the solar energy heating film
Energy absorptivity is 0.95, thermal emissivity 0.04.
Embodiment 2：
Embodiment 2 is a kind of green solar collection hotting mask, including substrate, and is stacked gradually from bottom to top in substrate
Infrared reflecting layer, first medium antireflection layer, the first metal absorption layer, second medium antireflection layer, the second metal absorption layer with
And third medium antireflection layer, overall thickness 357nm, wherein infrared reflecting layer W film thicknesses are 77nm, first medium antireflection layer
Al2O3Film thickness is 100nm, and the first metal absorption layer W film thicknesses are 13nm, second medium antireflection layer Al2O3Film thickness is
78nm, the second metal absorption layer W film thicknesses are 6nm, third medium antireflection layer Al2O3Film thickness is 83nm.
Fig. 3 show the reflectance spectrum of the embodiment of the present invention 2, and the solar absorptance of the solar energy heating film is 0.95, heat
Emissivity is 0.05.
Embodiment 3：
Embodiment 3 is a kind of yellow green solar energy heating film, including substrate, and is stacked gradually from bottom to top in substrate
Infrared reflecting layer, first medium antireflection layer, the first metal absorption layer, second medium antireflection layer, the second metal absorption layer
And third medium antireflection layer, overall thickness 382nm, wherein infrared reflecting layer W film thicknesses are 95nm, first medium antireflective
Layer Al2O3Film thickness is 92nm, and the first metal absorption layer W film thicknesses are 15nm, second medium antireflection layer Al2O3Film thickness is
80nm, the second metal absorption layer W film thicknesses are 5nm, third medium antireflection layer Al2O3Film thickness is 95nm.
Fig. 4 show the reflectance spectrum of the embodiment of the present invention 3, and the solar absorptance of the solar energy heating film is 0.94, heat
Emissivity is 0.05.
Embodiment 4：
Embodiment 4 is a kind of yellow solar energy heating film, including substrate, and is stacked gradually from bottom to top in substrate
Infrared reflecting layer, first medium antireflection layer, the first metal absorption layer, second medium antireflection layer, the second metal absorption layer with
And third medium antireflection layer, overall thickness 296nm, wherein infrared reflecting layer W film thicknesses are 112nm, first medium antireflective
Layer Al2O3Film thickness is 50nm, and the first metal absorption layer W film thicknesses are 8nm, second medium antireflection layer Al2O3Film thickness is
60nm, the second metal absorption layer W film thicknesses are 6nm, third medium antireflection layer Al2O3Film thickness is 60nm.
Fig. 5 show the reflectance spectrum of the embodiment of the present invention 4, and the solar absorptance of the solar energy heating film is 0.95, heat
Emissivity is 0.04.
Embodiment 5：
Embodiment 5 is a kind of purple solar energy heating film, including substrate, and is stacked gradually from bottom to top in substrate
Infrared reflecting layer, first medium antireflection layer, the first metal absorption layer, second medium antireflection layer, the second metal absorption layer with
And third medium antireflection layer, overall thickness 348nm, wherein infrared reflecting layer W film thicknesses are 130nm, first medium antireflective
Layer Al2O3Film thickness is 80nm, and the first metal absorption layer W film thicknesses are 12nm, second medium antireflection layer Al2O3Film thickness is
60nm, the second metal absorption layer W film thicknesses are 6nm, third medium antireflection layer Al2O3Film thickness is 60nm.
Fig. 6 show the reflectance spectrum of the embodiment of the present invention 5, and the solar absorptance of the solar energy heating film is 0.95, heat
Emissivity is 0.04.
Embodiment 6：
Embodiment 6 is a kind of pink solar energy heating film, including substrate, and is stacked gradually from bottom to top in substrate
Infrared reflecting layer, first medium antireflection layer, the first metal absorption layer, second medium antireflection layer, the second metal absorption layer
And third medium antireflection layer, overall thickness 372nm, wherein infrared reflecting layer W film thicknesses are 150nm, first medium anti-reflection
Penetrate a layer Al2O3Film thickness is 88nm, and the first metal absorption layer W film thicknesses are 8nm, second medium antireflection layer Al2O3Film thickness is
60nm, the second metal absorption layer W film thicknesses are 6nm, third medium antireflection layer Al2O3Film thickness is 60nm.
Fig. 7 show the reflectance spectrum of the embodiment of the present invention 6, and the solar absorptance of the solar energy heating film is 0.94, heat
Emissivity is 0.05.
Solar energy heating film provided by the invention is meeting heat safe while can realize the adjustable of multiple color again, and
There is higher absorption efficiency for solar energy, there is lower thermal radiation loss.And it only needs to use Al2O3With two kinds of materials of W
It can complete to prepare, it is only necessary to which adjusting to color can be realized by changing the thickness of some of which film layer, simple in structure, be
The solar energy heating film that a kind of preparation process is simple, selection is few, function admirable, practicability are high.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all within the spirits and principles of the present invention made by all any modification, equivalent and improvement etc., should all include
Within protection scope of the present invention.
Claims (7)
1. a kind of solar energy heating film, which is characterized in that including substrate, and be covered in the infrared external reflection stacked gradually in substrate
Layer W films, first medium antireflection layer Al2O3Film, the first metal absorption layer W films, second medium antireflection layer Al2O3Film, the second gold medal
Belong to absorbed layer W films and third medium antireflection layer Al2O3Film.
2. solar energy heating film as described in claim 1, which is characterized in that the infrared reflecting layer W film thicknesses be 60nm~
150nm。
3. solar energy heating film as claimed in claim 1 or 2, which is characterized in that the first medium antireflection layer Al2O3Film
Thickness is 50nm~100nm.
4. solar energy heating film as claimed in claim 3, which is characterized in that the first metal absorption layer W film thicknesses are 8nm
~15nm, to increase absorption of the collection hotting mask to ultraviolet, visible light and near infrared band energy.
5. solar energy heating film as claimed in claim 4, which is characterized in that the second medium antireflection layer Al2O3Film thickness
For 60nm~80nm.
6. solar energy heating film as claimed in claim 5, which is characterized in that the second metal absorption layer W film thicknesses are 5nm
~6nm, to absorb ultraviolet, visible light and near infrared band energy；After remaining energy passes through the second metal absorption layer W films,
Round-trip reflection is carried out repeatedly between infrared reflecting layer and the first metal absorption layer W films, is gradually inhaled by the first metal absorption layer W films
It receives.
7. solar energy heating film as claimed in claim 6, which is characterized in that the third medium antireflection layer Al2O3Film thickness
For 60nm~95nm.
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| CN106052171A (en) * | 2016-06-21 | 2016-10-26 | 华中科技大学 | Selective absorption film |
| CN106468483A (en) * | 2015-08-17 | 2017-03-01 | 北京有色金属研究总院 | A kind of new stacked structure photothermal deformation coating |
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2018
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|---|---|---|---|---|
| US4206248A (en) * | 1977-03-03 | 1980-06-03 | Eltreva Ag | Process for depositing a selected coating having dual layers |
| CN1041579A (en) * | 1988-10-03 | 1990-04-25 | Ppg工业公司 | The coating of the low reflectivity of monolithic glazing, high color saturation |
| CN101445331A (en) * | 2008-12-22 | 2009-06-03 | 清华大学 | Solar selective absorption coating and preparation method thereof |
| CN103148621A (en) * | 2013-03-06 | 2013-06-12 | 中山大学 | Absorbing film of solar flat plate collector |
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