CN202141821U - Medium/high-temperature selective solar energy absorption coating - Google Patents
Medium/high-temperature selective solar energy absorption coating Download PDFInfo
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- CN202141821U CN202141821U CN2011202930100U CN201120293010U CN202141821U CN 202141821 U CN202141821 U CN 202141821U CN 2011202930100 U CN2011202930100 U CN 2011202930100U CN 201120293010 U CN201120293010 U CN 201120293010U CN 202141821 U CN202141821 U CN 202141821U
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Abstract
The utility model discloses a medium/high-temperature selective solar energy absorption coating with a three-layer structure, comprising an infrared reflective layer, an absorption layer and an antireflective layer. The infrared reflective layer is an aluminum metal film. The absorption layer is composed of four sub layers, wherein the first sub layer is deposited on the infrared reflective layer and has a thickness of 100-160 nm, the second sub layer is deposited on the first sub layer and has a thickness of 70-140 nm, the third sub layer is deposited on the second sub layer and has a thickness of 100-160 nm, and the fourth sub layer is deposited on the third sub layer and has a thickness of 70-140 nm. The antireflective layer is an NbN layer. The solar energy absorption coating of the utility model is prepared by the magnetic-control auxiliary multi-arc ion plating deposition technology, with a thickness of 500-100 nm and with a surface roughness of 50-500 nm.
Description
Technical field
The utility model belongs to solar energy optical-thermal trans-utilization field, refers more particularly to the lip-deep solar selectively absorbing coating of a kind of solar energy heat collection pipe.
Background technology
Along with the development of solar energy heat utilization technology, particularly in the application of middle high temperature (200～500 ℃), realize in the solar energy heat collector that the solar selectively absorbing coating of photo-thermal conversion seems particularly important.Solar selectively absorbing coating; Be meant and can the light (be part that solar radiant energy mainly concentrate) of visible light near infrared range be absorbed as far as possible; And partly reflection as far as possible of mid and far infrared, such coating can absorb sun power efficiently and be converted into heat energy, reduces thermal radiation loss simultaneously.
Most solar selectively absorbing coating mainly is metal-dielectric composite; Extremely successful in cryogenic applications (≤100 ℃); But when middle high temperature is used, inevitably high-heating radiation loss serious situation such as poor heat stability, composition diffusion, coating shedding often appears, simultaneously.How to prepare ability hot operation, good thermal stability ability, the solar selectively absorbing coating that has high-absorbility and low thermal emissivity simultaneously is the great research focus of current solar energy heat utilization.
Solar energy absorbing coating in middle high-temperature applications has bigger research and development at present, on the heat collector of middle high temperature focus type, all obtains to use like material systems such as Ni-SiO2, Al2O3/Co-Al2O3/Ni, Mo-Al2O3, SS-ALN/SS.Above-mentioned coating adopts magnetron sputtering technique to realize composition gradual change sandwich construction basically or interferes multi-layer film structure; Improved absorptivity to a certain extent; But thermal stability problems still deposits; Under the hot operation state (400～500 ℃), thermal emissivity is bigger, causes the working heat radiation loss excessive simultaneously.Coating adopts the magnetron sputtering technique preparation, and rate of sedimentation is lower, and technology is also complicated, and cost is higher.
Summary of the invention
The purpose of the utility model provides a kind of middle high temperature solar energy selective absorption coating, solves the above-mentioned prior art difficult point of mentioning.The utility model is worked under middle hot environment, and the coating thermal stability is good, realizes high-absorbility and antiradar reflectivity characteristics.
Be to realize above-mentioned purpose, the technical scheme that the utility model adopts does, a kind of in high temperature solar energy selective absorption coating, this absorber coatings thickness is at 500～1000nm, the coating surface roughness is at 50～500nm; It is made up of a main body, an infrared reflecting layer, an absorption layer and an antireflection layer; Wherein, described solar selectively absorbing coating is deposited on the main body outside surface, is infrared reflecting layer, absorption layer and antireflection layer successively from main body; Described infrared reflecting layer is an aluminium film; Described absorption layer is made up of four subgrades, and its first subgrade is deposited on the infrared reflecting layer, and thickness is at 100～160nm; This second subgrade is deposited on first subgrade again, and thickness is at 70～140nm; This Sanya is deposited upon on second subgrade again, and thickness is at 100-160nm; The 4th subgrade is deposited on the 3rd subgrade again, and thickness is at 70～140nm; Described antireflection layer is the NbN layer, and thickness is at 80～150nm.
The beneficial effect of the utility model does, provide a kind of in high temperature solar energy selective absorption coating, coating is through the control of surfaceness, surperficial suedeization makes incident light on rough surface, realize repeatedly reflecting and absorbing, the enhancement coating absorptivity.The utility model adopts the auxiliary multi-arc ion coating deposition technique of magnetic control, has shortened the production cycle, reduces production costs.
Description of drawings
Fig. 1 is each layer structural drawing of the utility model coating.
Embodiment
Please with reference to shown in Figure 1, a kind of in high temperature solar energy selective absorption coating, it constitutes 8 by a main body 1, an infrared reflecting layer 2, an absorption layer 3 and an antireflection layer; Wherein, this main body 1 is a stainless thermal-collecting tube; This infrared reflecting layer 2 is covered on the outside surface of this main body 1 again, and it adopts the outside surface surface deposition layer of aluminum metal film of magnetically controlled sputter method in main body 1, and thickness is at 100-200nm; This absorption layer 3 is covered on the above-mentioned infrared reflecting layer 2 again, and it adopts magnetic control and multi-arc ion coating cosputtering deposition and gets, and it is made up of one first subgrade 4, one second subgrade 5, one the 3rd subgrade 6 and 7 four subgrades of one the 4th subgrade; Wherein this first subgrade 4 is deposited on this infrared reflecting layer, and its thickness is at 100～160nm; Second subgrade 5 is deposited on this first subgrade 4, and its thickness is at 70～140nm; The 3rd subgrade 6 is deposited on this second subgrade 5, and its thickness is at 100-160nm; The 4th subgrade 7 is deposited on the 3rd subgrade 6, and its thickness is at 70～140nm; On this absorption layer 3, adopt multi-arc ion coating deposition techniques NbN antireflection layer 8 again, thickness is at 80～150nm.
This tests the auxiliary multi-arc ion coating deposition technique of novel employing magnetic control, and through different arc powers and working gas flow control, coating presents different rough surfaces, and the coating surface roughness of above-mentioned technological parameter preparation is at 50-500nm.
Through above-mentioned embodiment, the purpose of the utility model is by in full force and effect having reached.The personage who is familiar with this skill should be understood that the utility model includes but not limited to the content of describing in accompanying drawing and the top embodiment.Anyly do not depart from the function of the utility model and the modification of structural principle all will be included in the scope of claims.
Claims (1)
1. high temperature solar energy selective absorption coating in a kind is characterized in that this absorber coatings thickness is at 500～1000nm, and the coating surface roughness is at 50～500nm; It is made up of a main body, an infrared reflecting layer, an absorption layer and an antireflection layer; Wherein, described solar selectively absorbing coating is deposited on the main body outside surface, is infrared reflecting layer, absorption layer and antireflection layer successively from main body; Described infrared reflecting layer is an aluminium film; Described absorption layer is made up of four subgrades, and its first subgrade is deposited on the infrared reflecting layer, and thickness is at 100～160nm; This second subgrade is deposited on first subgrade again, and thickness is at 70～140nm; This Sanya is deposited upon on second subgrade again, and thickness is at 100-160nm; The 4th subgrade is deposited on the 3rd subgrade again, and thickness is at 70～140nm; Described antireflection layer is the NbN layer, and thickness is at 80～150nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202930100U CN202141821U (en) | 2011-04-26 | 2011-08-04 | Medium/high-temperature selective solar energy absorption coating |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120126500 | 2011-04-26 | ||
| CN201120126500.1 | 2011-04-26 | ||
| CN2011202930100U CN202141821U (en) | 2011-04-26 | 2011-08-04 | Medium/high-temperature selective solar energy absorption coating |
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| CN202141821U true CN202141821U (en) | 2012-02-08 |
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| CN2011202930100U Expired - Fee Related CN202141821U (en) | 2011-04-26 | 2011-08-04 | Medium/high-temperature selective solar energy absorption coating |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538261A (en) * | 2012-03-19 | 2012-07-04 | 山东力诺新材料有限公司 | High-temperature solar photo-thermal conversion functional coating |
| CN102706018A (en) * | 2012-06-06 | 2012-10-03 | 中国科学院广州能源研究所 | Solar energy medium/high temperature selective absorption coating |
| CN106091444A (en) * | 2016-06-06 | 2016-11-09 | 南宁可煜能源科技有限公司 | A kind of coating for selective absorption of sunlight spectrum |
| CN110337602A (en) * | 2017-02-14 | 2019-10-15 | 古河电气工业株式会社 | Semiconductor laser module |
-
2011
- 2011-08-04 CN CN2011202930100U patent/CN202141821U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538261A (en) * | 2012-03-19 | 2012-07-04 | 山东力诺新材料有限公司 | High-temperature solar photo-thermal conversion functional coating |
| CN102706018A (en) * | 2012-06-06 | 2012-10-03 | 中国科学院广州能源研究所 | Solar energy medium/high temperature selective absorption coating |
| CN106091444A (en) * | 2016-06-06 | 2016-11-09 | 南宁可煜能源科技有限公司 | A kind of coating for selective absorption of sunlight spectrum |
| CN110337602A (en) * | 2017-02-14 | 2019-10-15 | 古河电气工业株式会社 | Semiconductor laser module |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Han Peigang Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Han Peigang Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20180804 |