CN1210237A - Selective solar energy absorbing coating - Google Patents
Selective solar energy absorbing coating Download PDFInfo
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- CN1210237A CN1210237A CN 97113400 CN97113400A CN1210237A CN 1210237 A CN1210237 A CN 1210237A CN 97113400 CN97113400 CN 97113400 CN 97113400 A CN97113400 A CN 97113400A CN 1210237 A CN1210237 A CN 1210237A
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- Prior art keywords
- coating
- absorbing coating
- layer
- solar energy
- absorbed layer
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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
Abstract
A high-selectivity solar sucking coating for vacuum tube features that its buttom layer is deposited silver mirror layer, the sucking layer uses 0.4-0.8 microns band in which solar energy is collected, that is, 1.543-3.084 eV, the metal, alloy, or semiconductor match with the solar energy better is used as colouring agent, and a filming substance is used. Its advantages are high absorptivity and low reflectivity.
Description
The present invention relates to known solar spectral selective absorbing coating.
Known spectral selective absorbing coating is with US Patent No 4.339.484, though technology such as Chinese patent CN85100142A and CN93110184.0 are all good, all adopt the preparation of vacuum sputtering technology jointly, equipment needs great amount of investment, production cycle is long, be difficult for being consistent from renaturation, then there is more pollution in chemical electric degree, also is not easy control from renaturation.The present invention is directed to above-mentioned weak point, improve, technology is oversimplified, the technology height maturation, the production cycle is shorter.
The objective of the invention is to propose the coating that a kind of bottom is the silver layer absorbent layer structure, and coating for selective absorption of sunlight spectrum based on this, technology is convenient, and the technology height maturation is with short production cycle.
The object of the present invention is achieved like this, adopt known silver mirror reaction principle silver coating on glass basis, form silver mirror, in infra-red range quite high reflectivity is arranged, it is good low-emissivity material, and on silver layer, spraying one deck absorber coatings, the chromogen of absorber coatings can adopt organic carbon black to join and silica; Use the F6331 iron oxide black; FeMnCuO, also available Fe powder is made chromogen, has very high selectivity, and the film forming matter of absorber coatings can be selected Ludox for use; Can select the silicone resin of acrylic resin modification for use; Also can select for use polyamine fat cold coating etc. to make film forming matter, all have very high absorptivity.
Coating solar-energy absorptivity a=0.94 to 0.958 of the present invention, e＜0.06[100 ℃]
Further specify the present invention below in conjunction with accompanying drawing, embodiment heat-sink shell coating structure of the present invention is not limited to this example.
Fig. 1 is the front elevational schematic of glass heat-collecting vacuum tube.
Fig. 2 is the profile of Fig. 1 along A-A.
Embodiment: referring to accompanying drawing 1, [1] is outer glass pipe, [2] be coating for selective absorption, [3] be inner glass tube, [4] be vacuum layer, [5] be the support that getter is arranged, further specify referring to accompanying drawing 2, [2] are coating for selective absorption of the present invention again, promptly in matrix material glass [3], adopt chemical silver mirror reaction plating one deck silver layer [21] on the outer surface of the inner glass tube of vacuum heat collection pipe [3], dry, take advantage of the heat absorbing coating [22] of 0.02 to 0.05 millimeter of thermal spraying one deck, heat absorbing coating [22] is selected chromium carbide or Fe powder for use, film forming matter is the polyurethane resin lacquer, Ludox, heat absorbing coating and silver mirror layer form coating for selective absorption of the present invention [2], after measured, the absorptivity a=0.94 of the wrong coating for selective absorption of the sunshine of present embodiment, emissivity e＜0.06.
The present invention adopts the Fe powder to make colour former, and film forming matter is selected Ludox for use, is coated in behind the silver mirror surface absorptivity a=0.94. emissivity e＜0.05 after measured.
The present invention is applicable to and adopts the heat-absorbing paint of multiple performance excellent absorption rate a＞0.92 to be coated on the silver mirror layer, forms the present invention and endeavours to improve absorptivity, reduces the purpose of emissivity.
Coating densification of the present invention, Stability Analysis of Structures, technology is convenient, adopts technique known to be combined to form compound coating for selective absorption, and it is also low that its hot property and the coating for selective absorption of vacuum sputtering are compared emissivity.
Claims (3)
1, a kind of solar selectively absorbing coating of vacuum heat collection pipe, it is by bottom, absorbed layer constitutes, wherein bottom be silver layer in glass tube exterior surface, absorbed layer is chromium carbide or Fe powder coating, it is characterized in that bottom is a silver layer.
2, according to the solar selectively absorbing coating of claims 1 described a kind of vacuum heat collection pipe, the colour former that it is characterized in that absorbed layer is chromium carbide or iron black Fe powder.
3, want the solar selectively absorbing coating of 1 and 2 described a kind of vacuum heat collection pipes according to right, the film forming matter that it is characterized in that absorbed layer is Ludox or polyurethane resin or silicone resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97113400 CN1210237A (en) | 1997-09-02 | 1997-09-02 | Selective solar energy absorbing coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97113400 CN1210237A (en) | 1997-09-02 | 1997-09-02 | Selective solar energy absorbing coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1210237A true CN1210237A (en) | 1999-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97113400 Pending CN1210237A (en) | 1997-09-02 | 1997-09-02 | Selective solar energy absorbing coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1210237A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103756559A (en) * | 2013-12-31 | 2014-04-30 | 广西宾阳县荣良新材料科技有限公司 | Solar energy heat absorbing coating of vacuum pipe |
| CN104487785A (en) * | 2012-10-26 | 2015-04-01 | 株式会社丰田自动织机 | Heat conversion member and heat conversion laminate |
| 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 |
| CN106555177A (en) * | 2015-09-29 | 2017-04-05 | 淄博环能海臣环保技术服务有限公司 | One kind thermally decomposes to generate high temperature resistant selective absorbing functional membrane |
| CN107940770A (en) * | 2017-10-25 | 2018-04-20 | 汪涛 | Vacuum glass heat collection tube for solar water heater and preparation method thereof |
| CN109945532A (en) * | 2019-01-14 | 2019-06-28 | 山东满歌润电热电器有限公司 | A kind of solar energy black film pipe and black film having excellent heat absorption heat exchange function |
-
1997
- 1997-09-02 CN CN 97113400 patent/CN1210237A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104487785A (en) * | 2012-10-26 | 2015-04-01 | 株式会社丰田自动织机 | Heat conversion member and heat conversion laminate |
| CN103756559A (en) * | 2013-12-31 | 2014-04-30 | 广西宾阳县荣良新材料科技有限公司 | Solar energy heat absorbing coating of vacuum pipe |
| 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 |
| CN106555177A (en) * | 2015-09-29 | 2017-04-05 | 淄博环能海臣环保技术服务有限公司 | One kind thermally decomposes to generate high temperature resistant selective absorbing functional membrane |
| CN107940770A (en) * | 2017-10-25 | 2018-04-20 | 汪涛 | Vacuum glass heat collection tube for solar water heater and preparation method thereof |
| CN109945532A (en) * | 2019-01-14 | 2019-06-28 | 山东满歌润电热电器有限公司 | A kind of solar energy black film pipe and black film having excellent heat absorption heat exchange function |
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| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |