CN102734966A - Tank type solar intermediate temperature selective absorption coating - Google Patents
Tank type solar intermediate temperature selective absorption coating Download PDFInfo
- Publication number
- CN102734966A CN102734966A CN2012102204998A CN201210220499A CN102734966A CN 102734966 A CN102734966 A CN 102734966A CN 2012102204998 A CN2012102204998 A CN 2012102204998A CN 201210220499 A CN201210220499 A CN 201210220499A CN 102734966 A CN102734966 A CN 102734966A
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- layer
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- type solar
- intermediate temperature
- tank type
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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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- 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
- F24S70/225—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption for spectrally selective absorption
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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
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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)
- Spectroscopy & Molecular Physics (AREA)
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Abstract
The invention relates to a tank type solar intermediate temperature selective absorption coating, which comprises an infrared reflecting layer, a first absorption layer, a second absorption layer and an antireflection layer sequentially from a substrate to the surface. According to the tank type solar intermediate temperature selective absorption coating, raw materials serving as the coating are conventional materials, are wide in application range, high in formability and low in cost and can be processed into cylindrical target materials, so that the utilization rate of the target materials is improved obviously, and the operation cost can be reduced further. The tank type solar intermediate temperature selective absorption coating is suitable for solar heat collection tubes which operate at intermediate temperature.
Description
Technical field
The present invention relates to warm power field in the groove type solar, be specifically related to a kind of in solar selectively absorbing coating in the warm thermal-collecting tube.
Background technology
Solar energy thermal-power-generating is an important technology approach that large-scale develops and utilizes solar energy; Tower, slot type, dish formula system are arranged at present; Wherein more with slot type and tower system commercial application; Particularly trough type solar power generation is unique in the world up to now mature technology through commercialized running in 20 years, and its cost is far below photovoltaic generation.The energy-storage system of slot light collection heat generating system can be realized operation in 24 hours, and along with the increase of scale, cost of electricity-generating also has very strong competitiveness.At present, development priority is middle temperature thermal-arrest, and operating temperature surpasses 400 ℃ thermal-collecting tube, can be used for the heat generating.In in the warm thermal-collecting tube, generally adopt the high power concentrator technology, the optically focused ratio can be up to 80.The photo-thermal transformation efficiency is a key index, and often the raising of one percentage point all is a strain after.
For solar selectively absorbing coating at present after deliberation with film systems such as the SS-C/SS (stainless steel) that has been widely used black chromium, anode oxidation coloration Ni-Al2O3 and has had a composition gradual change characteristic and Al-N/Al, but these coatings are applicable to that 200 ℃ of thermal-collecting tubes with interior plate type heat collecting device are surperficial.But under mesophilic condition, obviously raise because its infrared emittance rises with temperature, cause the heat collector heat loss obviously to rise, the thermal efficiency significantly descends.For the middle temperature utilization of solar energy, especially middle temperature is utilized, and needs a kind of absorptivity height, low, the Heat stability is good of emissivity, and the easy coating for selective absorption of technology.
Summary of the invention
In order to solve the above-mentioned technical problem that exists in the prior art; The object of the present invention is to provide temperature selection absorber coatings in a kind of groove type solar; When thermal-collecting tube was worked under 350-450 ℃ of temperature environment, coating was high to the absorptivity of solar spectrum, low, the good thermal stability of emissivity of middle temperature black body radiation.
In order to solve the problems of the technologies described above, the present invention realizes through following technical scheme:
Temperature is selected absorber coatings in a kind of groove type solar, from the matrix to the surface, is followed successively by infrared reflecting layer, first absorbed layer, second absorbed layer and antireflection layer, and said infrared reflecting layer is made up of the Ti film, and thickness is 20-120nm; First absorbed layer is the Ti+TiNi film, and thickness is 50-75nm, and wherein the content of TiNi is 20-35wt%; Second absorbed layer is the Ti+TiNi film, and thickness is 75-125nm, and wherein the content of TiNi is 35-50wt%; Said antireflection layer is TiO
2Film, thickness are 25-75nm.
Wherein, the thickness of said infrared reflecting layer is 30-90 nm.
Wherein, the thickness of said first absorbed layer is 50-70 nm.
Wherein, the thickness of said second absorbed layer is 100-125 nm.
Wherein, the thickness of said first absorbed layer and second absorbed layer and be said antireflection layer 2-3 doubly.
Compared with prior art, the present invention has the following advantages: coating for selective absorption provided by the present invention mixes two absorbed layer and alloy antireflection layers of interfering of forming by infrared metallic reflection Ti layer, Ti and TiNi and forms.Have good middle temperature stability, be applicable to 300-450 ℃ mesophilic range.Simultaneously,, utilize the interference effect of film and the sink effect that optical trap comes enhancement coating, make rete have the high absorptivity of solar spectrum, the advantage of infrared spectrum low-launch-rate owing to adopted two interference absorbent layer structures.In addition, the raw material that coating of the present invention is selected are conventional material, and range of application is wider, and processability is good, can be processed into the column target, significantly improves target utilization, and price is also cheaper simultaneously, can further reduce job costs.The solar energy heat collection pipe of warm operating temperature in being applicable to.
The specific embodiment
Below in conjunction with the specific embodiment the present invention is done further detailed explanation.
Temperature selects absorber coatings to comprise four tunics in the groove type solar of the present invention, from the matrix to the surface, is followed successively by infrared reflecting layer, first absorbed layer, second absorbed layer and antireflection layer, and said infrared reflecting layer is made up of the Ti film, and thickness is 20-120nm; First absorbed layer is the Ti+TiNi film, and thickness is 50-75nm, and wherein the content of TiNi is 20-35wt%; Second absorbed layer is the Ti+TiNi film, and thickness is 75-125nm, and wherein the content of TiNi is 35-50wt%; Said antireflection layer is TiO
2Film, thickness are 25-75nm.
Temperature is selected absorber coatings in the groove type solar of the present invention, and can adopt following method preparation: it may further comprise the steps:
Preliminary treatment is carried out in substrate
Earlier to carrying out preliminary treatment in the stainless steel-based end; With the polishing of stainless steel-based basal surface, ultrasonic waves for cleaning 10-20 min in alcohol respectively then, and then with deionized water ultrasonic waves for cleaning 5-10 min; Then dry processing, magnetron sputtering is carried out at the stainless steel-based end after will drying then; Earlier vacuum chamber is evacuated to 10
-The 3 Pa orders of magnitude charge into Ar gas as sputtering atmosphere, and the adjustment sputtering pressure cleans 20-30min with ion gun to substrate to 1-3 Pa.
Deposition ground floor infrared reflecting layer on matrix
Select the Ti target of purity 99.99% for use, after having cleaned substrate, open the Ti target power supply.Adopt magnetically controlled DC sputtering, adjustment dc source voltage is 350-450 V; The preparation coating layer thickness is 20-120nm, and this layer has high reflection characteristic to infrared band spectrum.
On infrared reflecting layer, deposit absorbed layer
Selecting purity for use is 99.99% TiNi target and above-mentioned Ti target, adopts the cosputtering mode to form first absorbed layer; Increase the power of sputtering target film, prepare the second subgrade Ti-TiNi film.
On second layer absorbed layer, deposit antireflection layer
The deposition antireflection layer is TiO
2Film.
Although the inventor has done comparatively detailed elaboration to technical scheme of the present invention and has enumerated; Be to be understood that; For one of ordinary skill in the art; According to disclosed content, the foregoing description made to revise and/or change or adopt the replacement scheme that is equal to be conspicuous, it all can not break away from the present invention and require the scope protected.
Embodiment 1
Temperature selects absorber coatings to comprise four tunics in the groove type solar of the present invention, from the matrix to the surface, is followed successively by infrared reflecting layer, first absorbed layer, second absorbed layer and antireflection layer, and said infrared reflecting layer is made up of the Ti film, and thickness is 20-120nm; First absorbed layer is the Ti+TiNi film, and thickness is 50-75nm, and wherein the content of TiNi is 20-35wt%; Second absorbed layer is the Ti+TiNi film, and thickness is 75-125nm, and wherein the content of TiNi is 35-50wt%; Said antireflection layer is TiO
2Film, thickness are 25-75nm.The performance of the solar selectively absorbing coating of the present invention's preparation is following: after 1 hour, the coating absorptivity is 90%-92% to the coating process 400 ℃ of vacuum annealings.
Claims (5)
1. temperature is selected absorber coatings in the groove type solar, from the matrix to the surface, is followed successively by infrared reflecting layer, first absorbed layer, second absorbed layer and antireflection layer, and said infrared reflecting layer is made up of the Ti film, and thickness is 20-120nm; First absorbed layer is the Ti+TiNi film, and thickness is 50-75nm, and wherein the content of TiNi is 20-35wt%; Second absorbed layer is the Ti+TiNi film, and thickness is 75-125nm, and wherein the content of TiNi is 35-50wt%; Said antireflection layer is TiO
2Film, thickness are 25-75nm.
2. the described absorber coatings of claim 1, the thickness that it is characterized in that said infrared reflecting layer is 30-90 nm.
3. the described absorber coatings of claim 1, the thickness that it is characterized in that first absorbed layer is 50-70 nm.
4. the described absorber coatings of claim 1, the thickness that it is characterized in that said second absorbed layer is 100-125 nm.
5. the described absorber coatings of claim 1, it is characterized in that said first absorbed layer and second absorbed layer thickness and for the 2-3 of said antireflection layer doubly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102204998A CN102734966A (en) | 2012-06-29 | 2012-06-29 | Tank type solar intermediate temperature selective absorption coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102204998A CN102734966A (en) | 2012-06-29 | 2012-06-29 | Tank type solar intermediate temperature selective absorption coating |
Publications (1)
| Publication Number | Publication Date |
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| CN102734966A true CN102734966A (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012102204998A Pending CN102734966A (en) | 2012-06-29 | 2012-06-29 | Tank type solar intermediate temperature selective absorption coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052171A (en) * | 2016-06-21 | 2016-10-26 | 华中科技大学 | Selective absorption film |
| CN107523827A (en) * | 2017-08-17 | 2017-12-29 | 南京理工大学连云港研究院 | A kind of high temperature solar energy selective composite coating for absorbing and preparation method thereof |
| CN108645061B (en) * | 2018-03-15 | 2020-07-28 | 兰州交大常州研究院有限公司 | Multilayer composite solar spectrum selective absorption coating and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1144277A (en) * | 1995-08-25 | 1997-03-05 | 东芝图格莱株式会社 | Plate-crystalline tungsten carbide-containing hard alloy, composition for forming plate-crystalline tungsten carbide and process for preparing said hard alloy |
| CN101806508A (en) * | 2010-02-26 | 2010-08-18 | 北京天瑞星真空技术开发有限公司 | High temperature solar energy selective absorption coating and preparation method thereof |
-
2012
- 2012-06-29 CN CN2012102204998A patent/CN102734966A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1144277A (en) * | 1995-08-25 | 1997-03-05 | 东芝图格莱株式会社 | Plate-crystalline tungsten carbide-containing hard alloy, composition for forming plate-crystalline tungsten carbide and process for preparing said hard alloy |
| CN101806508A (en) * | 2010-02-26 | 2010-08-18 | 北京天瑞星真空技术开发有限公司 | High temperature solar energy selective absorption coating and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052171A (en) * | 2016-06-21 | 2016-10-26 | 华中科技大学 | Selective absorption film |
| CN107523827A (en) * | 2017-08-17 | 2017-12-29 | 南京理工大学连云港研究院 | A kind of high temperature solar energy selective composite coating for absorbing and preparation method thereof |
| CN108645061B (en) * | 2018-03-15 | 2020-07-28 | 兰州交大常州研究院有限公司 | Multilayer composite solar spectrum selective absorption coating and preparation method thereof |
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Application publication date: 20121017 |