CN108645062B - A kind of solar energy heating film - Google Patents
A kind of solar energy heating film Download PDFInfo
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- CN108645062B CN108645062B CN201810349984.2A CN201810349984A CN108645062B CN 108645062 B CN108645062 B CN 108645062B CN 201810349984 A CN201810349984 A CN 201810349984A CN 108645062 B CN108645062 B CN 108645062B
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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
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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
- 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
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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
-
- 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 film stacked gradually in substrate, first medium antireflection layer Al2O3Film, the first metal absorption layer W film, second medium antireflection layer Al2O3Film, the second metal absorption layer W film and third medium antireflection layer Al2O3Film；This solar energy heating film provided by the invention is by Al2O3Film and W film 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 collection 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 band, for 2500nm above band reflectivity up to 95% or more, while efficient absorption solar energy, also reduce heat emission bring energy loss.
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 technique
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
With the development of demand and technology, the application range of solar energy heating film applies (100 from cryogenic applications (≤100 DEG C) to medium temperature
DEG C~400 DEG C) and (> 400 DEG C) development of high temperature application, 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 material
Pass through Al and N2Reactive magnetron sputtering obtains, and passes through N in control chamber2Concentration obtain 4 kinds of different Al-AlN composite woods
The thickness of the bed of material, top layer is adjustable, realizes the adjusting to color with this, and the thickness of remainder layer is fixed, and 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 control is used
It sputters in stainless steel base and is successively coated with W, WAlN, WAlON and Al2O3Totally 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.
Summary of the invention
Extremely a little less in aiming at the above defects or improvement requirements of 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 film stacked gradually in substrate, first medium antireflection layer Al2O3Film, the first metal absorption layer
W film, second medium antireflection layer Al2O3Film, the second metal absorption layer W film and third medium antireflection layer Al2O3Film.
Preferably, above-mentioned solar energy heating film, infrared reflecting layer W film thickness are 60nm~150nm；So that solar energy collection
Hotting mask reaches 90% or more for the reflectivity of mid and far infrared wave band, reduces heat radiation bring energy loss, 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 band, so that collection hotting mask keeps good absorption characteristic.
Preferably, above-mentioned solar energy heating film, the first metal absorption layer W film thickness is 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 band, so that collection hotting mask keeps good absorption characteristic.
Preferably, above-mentioned solar energy heating film, the second metal absorption layer W film thickness 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 film, in infrared reflecting layer and the first gold medal
Belong to and carry out repeatedly round-trip reflection between absorbed layer W film, is gradually absorbed by the first metal absorption layer W film.
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 band, 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 to adjust the skin color of collection hotting mask and bring it about variation, 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 film 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 wave
Section absorptivity reach 94% or more, for 2500nm above band reflectivity up to 95% or more, in efficient absorption solar energy
While, heat emission bring energy loss is reduced as much as possible.
Detailed description of the invention
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 appended drawing reference is used to denote the same element or structure, in which: A-Al2O3Film, B-W
Film, C- substrate.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention 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
Not constituting a conflict with each other 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 the infrared reflecting layer, first medium antireflection layer, the first metal absorption layer, the second medium antireflection layer, second that stack gradually
Metal absorption layer and third medium antireflection layer.
Embodiment provide high temperature resistant colour developing solar energy heating film with a thickness of 243nm~446nm, including medium antireflective
Layer uses Al2O3Film, metal absorption layer are translucent W film, and infrared reflecting layer is thicker W film.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 thickness is 60nm, first medium antireflective
Layer Al2O3Film thickness is 90nm, and the first metal absorption layer W film thickness is 13nm, second medium antireflection layer Al2O3Film thickness is
60nm, the second metal absorption layer W film thickness 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 thickness is 77nm, first medium antireflection layer
Al2O3Film thickness is 100nm, and the first metal absorption layer W film thickness is 13nm, second medium antireflection layer Al2O3Film thickness is
78nm, the second metal absorption layer W film thickness 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 thickness is 95nm, first medium antireflective
Layer Al2O3Film thickness is 92nm, and the first metal absorption layer W film thickness is 15nm, second medium antireflection layer Al2O3Film thickness is
80nm, the second metal absorption layer W film thickness 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 thickness is 112nm, first medium antireflective
Layer Al2O3Film thickness is 50nm, and the first metal absorption layer W film thickness is 8nm, second medium antireflection layer Al2O3Film thickness is
60nm, the second metal absorption layer W film thickness 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 thickness is 130nm, first medium antireflective
Layer Al2O3Film thickness is 80nm, and the first metal absorption layer W film thickness is 12nm, second medium antireflection layer Al2O3Film thickness is
60nm, the second metal absorption layer W film thickness 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 thickness is 150nm, first medium anti-reflection
Penetrate a layer Al2O3Film thickness is 88nm, and the first metal absorption layer W film thickness is 8nm, second medium antireflection layer Al2O3Film thickness is
60nm, the second metal absorption layer W film thickness 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 resistant to high temperature while being able to achieve 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 using Al2O3With two kinds of materials of W
It can complete to prepare, it is only necessary to which the thickness for changing some of them film layer can realize adjusting to color, and structure is simple, is
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, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention 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 film, first medium antireflection layer Al2O3Film, the first metal absorption layer W film, second medium antireflection layer Al2O3Film, the second gold medal
Belong to absorbed layer W film and third medium antireflection layer Al2O3Film；
The solar energy heating film is by adjusting its first medium antireflection layer, second medium antireflection layer, the first Metal absorption
Layer, the second metal absorption layer and infrared reflecting layer thickness adjust its skin color.
2. solar energy heating film as described in claim 1, which is characterized in that the infrared reflecting layer W film thickness 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
With a thickness of 50nm~100nm.
4. solar energy heating film as claimed in claim 3, which is characterized in that the first metal absorption layer W film thickness is 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 thickness is 5nm
~6nm, to absorb ultraviolet, visible light and near infrared band energy；After remaining energy passes through the second metal absorption layer W film, In
Round-trip reflection is carried out repeatedly between infrared reflecting layer and the first metal absorption layer W film, is gradually inhaled by the first metal absorption layer W film
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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| 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 |
| CN103388917A (en) * | 2013-07-10 | 2013-11-13 | 山东大学（威海） | Solar selective absorbing coating and preparation method thereof |
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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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| DE2709239C3 (en) * | 1977-03-03 | 1980-07-24 | Eltreva Ag, Aesch (Schweiz) | Process for the production of a selectively solar thermal energy absorbing coating on a metal substrate |
| US5112693A (en) * | 1988-10-03 | 1992-05-12 | Ppg Industries, Inc. | Low reflectance, highly saturated colored coating for monolithic glazing |
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2018
- 2018-04-18 CN CN201810349984.2A patent/CN108645062B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104279779A (en) * | 2013-07-04 | 2015-01-14 | 北京有色金属研究总院 | Metal nitride solar spectrum selective absorption coating |
| CN103388917A (en) * | 2013-07-10 | 2013-11-13 | 山东大学（威海） | Solar selective absorbing coating and preparation method thereof |
| CN104005003A (en) * | 2014-05-28 | 2014-08-27 | 北京天瑞星光热技术有限公司 | High temperature and salt spray resistance solar energy selective absorbing coating in atmosphere and preparation method of coating |
| 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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