CN201706749U - Solar collector with composite metal-SiO2 metal ceramic selective absorption coating - Google Patents
Solar collector with composite metal-SiO2 metal ceramic selective absorption coating Download PDFInfo
- Publication number
- CN201706749U CN201706749U CN2010202377067U CN201020237706U CN201706749U CN 201706749 U CN201706749 U CN 201706749U CN 2010202377067 U CN2010202377067 U CN 2010202377067U CN 201020237706 U CN201020237706 U CN 201020237706U CN 201706749 U CN201706749 U CN 201706749U
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- metal
- solar
- selective absorption
- sio2
- sio
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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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- Other Surface Treatments For Metallic Materials (AREA)
Abstract
A solar collector with a composite metal-SiO2 metal ceramic selective absorption coating belongs to the field of solar application. A solar selective absorption coating of the solar collector with the composite metal-SiO2 metal ceramic selective absorption coating comprises a composite metal reflective layer, a metal-ceramic co-sedimentation metal ceramic layer and a SiO2 ceramic antireflection layer. In a solar grooved power-generating collector, the solar selective absorption coating adopts high-melting metal Mo as a reflective layer, Mo-SiO2 co-sedimentation mixture as a solar absorption layer and SiO2 as the antireflection layer, wherein, the absorption rate reaches 93 per cent above, with high heat conversion efficiency the solar selective absorption coating can be used above 500 DEG C. The metal reflective layer is composed of a plurality of metal films. The solar absorption layer is the same as the SiO2 antireflection layer. The absorption rate is improved 3 per cent or so. The heat efficiency of the solar collector is improved.
Description
Technical field
The utility model relates to a kind of composition metal-SiO
2Cermet coating for selective absorption solar energy heat collection pipe belongs to the Application of Solar Energy field.
Background technology
At present, the solar energy optical-thermal thermal-collecting tube is by the stainless steel tube of coating, bellows, silicon boron glass pipe is formed, wherein bellows welds with stainless steel tube and silicon boron glass pipe respectively, vacuumizes between stainless steel tube and silicon boron glass pipe, prevents the heat convection current conduction loss that absorbs.Solar light focusing is radiated on the stainless steel tube by glass tube on thermal-collecting tube, has solar selectively absorbing coating to be converted to heat energy.Therefore, solar selectively absorbing coating is the core of solar energy heat collection pipe, and absorptivity is high more, and the solar heat conversion efficiency is high more.The solar energy heat collection pipe of Solel company and Schott company production at present adopts Mo-Al
2O
3The cermet coating for selective absorption, 400 ℃ of operating temperatures, and the result of research shows employing Mo-SiO at present
2The cermet performance is better.
Summary of the invention
The utility model provides a kind of composition metal-SiO
2Cermet coating for selective absorption solar energy heat collection pipe.This solar energy heat collection pipe should adopt the laminated film of refractory metal such as magnetically controlled sputter method deposition Mo, W and other metal as the reflecting layer, with the absorptivity of stainless adhesion and coating further raising is arranged, adopt rf magnetron sputtering codeposition metal M o and SiO
2Solar absorbing layer, radio-frequency sputtering deposition SiO
2Antireflection layer.
The technical scheme that the utility model adopted is: a kind of composition metal-SiO
2Cermet coating for selective absorption solar energy heat collection pipe, it mainly comprises a stainless steel tube.Be with an outer glass pipe in the outside of described stainless steel tube, be connected to the two ends of stainless steel tube at the two ends of outer glass pipe successively through interior ring, bellows and outer shroud; Be provided with one deck high-conversion rate rete on the surface of described stainless steel tube.
Described outer shroud and stainless steel tube and bellows weld together; Ring and bellows and outer glass pipe also weld together in described.
Described rete comprises composition metal reflecting layer, the SiO that is made up of multiple metallic film
2Absorbed layer and SiO
2Antireflection layer.
The beneficial effects of the utility model are: this composition metal-SiO
2The solar selectively absorbing coating of cermet coating for selective absorption solar energy heat collection pipe is by metallic reflector, metal-ceramic common deposited cermet coating and SiO
2The pottery antireflection layer is formed.In the thermal-collecting tube of solar groove type generating, solar selectively absorbing coating adopts refractory metal Mo as the reflecting layer, Mo-SiO
2Codeposition admixture is as solar absorbing layer, SiO
2As antireflection layer, absorptivity reaches more than 93%, can have high thermal conversion efficiency using more than 500 ℃.Metallic reflector adopts multiple metallic film to form solar absorbing layer and SiO
2Identical, absorptivity can improve about 3%.Improve the thermal efficiency of thermal-collecting tube.
Description of drawings
Fig. 1 is a kind of composition metal-SiO
2Cermet coating for selective absorption solar energy heat collection pipe structure chart.
Among the figure: 1, stainless steel tube, 1a, outer shroud, 2, the high-conversion rate rete, 3, outer glass pipe, 3a, interior ring, 4, bellows.
The specific embodiment
Fig. 1 shows a kind of composition metal-SiO
2Cermet coating for selective absorption solar energy heating tubular construction.Among the figure, composition metal-SiO
2Cermet coating for selective absorption solar energy heat collection pipe mainly comprises a stainless steel tube 1, be with an outer glass pipe 3 in the outside of stainless steel tube 1, be connected to the two ends of stainless steel tube 1 at the two ends of outer glass pipe 3 successively through interior ring 3a, bellows 4 and outer shroud 1a; Be provided with one deck high-conversion rate rete 2 on the surface of stainless steel tube 1.Outer shroud 1a and stainless steel tube 1 and bellows 4 weld together; Interior ring 3a and bellows 4 also weld together, and stick with glue with outer glass pipe 3 to connect together.
The principle that composition metal on this solar energy heat collection pipe or metallic compound are selected:
1, with stainless steel and refractory metal Mo, W has good lattice matching, obtains good stress coupling in high temperature use and temperature changing process.
2, the composition metal reflecting layer of Zu Chenging has good optical property, improves between sunlight wavelength-2-300nm-1200nm to have low reflectivity, has high reflectance more than wavelength 1200nm.
3, result of calculation for example: composition metal Au-Mo-SiO
2Coating, the visible-range absorptivity is greater than 97%, and infrared reflectivity is greater than 97%.
4, adopt magnetically controlled DC sputtering sputtering sedimentation Mo, magnetically controlled DC sputtering metal A u, direct current and rf magnetron sputtering codeposition metal M o and SiO
2Be solar absorbing layer, radio-frequency sputtering deposition SiO
2Antireflection layer.
Claims (3)
1. composition metal-SiO
2Cermet coating for selective absorption solar energy heat collection pipe, it mainly comprises a stainless steel tube (1), it is characterized in that: be with an outer glass pipe (3) in the outside of described stainless steel tube (1), be connected to the two ends of stainless steel tube (1) at the two ends of outer glass pipe (3) successively through interior ring (3a), bellows (4) and outer shroud (1a); Be provided with one deck high-conversion rate rete (2) on the surface of described stainless steel tube (1).
2. according to the described composition metal-SiO of claim 1
2Cermet coating for selective absorption solar energy heat collection pipe is characterized in that: described outer shroud (1a) welds together with stainless steel tube (1) and bellows (4); Ring (3a) also welds together with bellows (4) and outer glass pipe (3) in described.
3. according to the described composition metal-SiO of claim 1
2Cermet coating for selective absorption solar energy heat collection pipe is characterized in that: described rete (2) comprises composition metal reflecting layer, the SiO that is made up of multiple metallic film
2Absorbed layer and SiO
2Antireflection layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202377067U CN201706749U (en) | 2010-06-19 | 2010-06-19 | Solar collector with composite metal-SiO2 metal ceramic selective absorption coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202377067U CN201706749U (en) | 2010-06-19 | 2010-06-19 | Solar collector with composite metal-SiO2 metal ceramic selective absorption coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201706749U true CN201706749U (en) | 2011-01-12 |
Family
ID=43443909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202377067U Expired - Fee Related CN201706749U (en) | 2010-06-19 | 2010-06-19 | Solar collector with composite metal-SiO2 metal ceramic selective absorption coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201706749U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075828A (en) * | 2013-01-31 | 2013-05-01 | 卢孟磊 | Silicon dioxide (SiO2) aerogel trough-type solar heat-collecting tube and preparation method thereof |
| WO2014090063A1 (en) * | 2012-12-14 | 2014-06-19 | 南京旭城新能源技术有限公司 | High-temperature-resistant high-strength sealing film structure between glass tube and metal piece |
-
2010
- 2010-06-19 CN CN2010202377067U patent/CN201706749U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014090063A1 (en) * | 2012-12-14 | 2014-06-19 | 南京旭城新能源技术有限公司 | High-temperature-resistant high-strength sealing film structure between glass tube and metal piece |
| CN103075828A (en) * | 2013-01-31 | 2013-05-01 | 卢孟磊 | Silicon dioxide (SiO2) aerogel trough-type solar heat-collecting tube and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20130619 |