CN102721211A - Medium-temperature solar thermal collector panel - Google Patents
Medium-temperature solar thermal collector panel Download PDFInfo
- Publication number
- CN102721211A CN102721211A CN201210220343XA CN201210220343A CN102721211A CN 102721211 A CN102721211 A CN 102721211A CN 201210220343X A CN201210220343X A CN 201210220343XA CN 201210220343 A CN201210220343 A CN 201210220343A CN 102721211 A CN102721211 A CN 102721211A
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- China
- Prior art keywords
- nickel oxide
- nitrogen
- stainless steel
- steel substrate
- solar thermal
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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
The invention relates to a medium-temperature solar thermal collector panel which comprises a stainless steel substrate. The medium-temperature solar thermal collector panel is characterized in that a nickel nitride infrared resistant reflective film, a nitrogen nickel oxide gradient absorption film and a nickel oxide antireflection film are sequentially arranged on the stainless steel substrate. The solar thermal collector panel coating has low low-temperature emissivity, so the film system is low in heat loss and high in thermal insulation property, the coating has high hardness, high wear resistance and oxidation resistance, and the electrical resistivity is low; and therefore, the solar thermal collector has excellent weather resistance and medium-temperature use performance and is suitable for the condition of the temperature between 300 DEG C and 450 DEG C.
Description
Technical field
The invention belongs to solar thermal collector, more particularly, the present invention relates to a kind of middle temperature solar heat collector thermal-arrest plate.
Background technology
The energy and environment are the world today's two big outstanding social concerns, and in the face of various shortage of energy sources and environmental pollution, the utilization of seeking regenerative resource becomes the main direction of various countries to energy research.Solar energy is a kind of renewable, pollution-free, resource that reserves are abundant; How to make full use of solar energy resources; Key is to improve the capacity usage ratio and the utilization rate of solar thermal collector, and its core technology then is the coating for selective absorption of a kind of high-absorbility of preparation, low-launch-rate, cheapness.Solar energy heat utilization field, current development priority are middle high-temperature heat-gatherings, and operating temperature surpasses 400 ℃ thermal-collecting tube, can be used for the heat generating.
In the middle high-temperature heat-collection pipe, 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.Though the employing concentration structure because problems such as preparation precision and glass deformation exist, can not reach the degree of ideal focusing, the hot spot of along can be compared with the thermal-collecting tube diameter basically.This just makes incident ray and thermal-collecting tube surface angle be distributed in 0 to spend in the gamut of 90 degree.During wide-angle incident, reflectivity is near 100%.Simple calculating show, the absorptance on thermal-arrest surface 90% during less than complete vertical incidence of light.In addition, morning and afternoon, the angle on incident light and thermal-collecting tube surface became bigger during the daylight deflection, and absorptivity further reduces.When the absorptance when vertical incidence reached 0.95, the average absorption ratio had only about 0.8.
Current, the absorptance during the light vertical incidence has been difficult to further raising, and the absorptance when improving the light non-normal incidence will become the committed step that improves the photo-thermal transformation efficiency.
Can know from the heat radiation theory, the absorptance of black matrix or grey body, irrelevant with the incident angle of light.Nature does not exist desirable black matrix or grey body, but the comparable rough surface of size and optical wavelength can be similar to and is regarded as grey body, and the coarse sorbent surface of making near desirable grey body is the key of dealing with problems.
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 a kind of middle temperature solar heat collector thermal-arrest plate, described thermal-arrest plate good weatherability, middle temperature serviceability is good.
To achieve these goals, the present invention has adopted following technical scheme:
Temperature solar heat collector thermal-arrest plate in a kind of comprises stainless steel substrate, it is characterized in that on stainless steel substrate, being provided with successively nickel oxide counter infrared ray reflectance coating, nitrogen nickel oxide gradual change absorbing film and nickel oxide antireflective coating.
Wherein, plated film adopts the reactive magnetron sputtering method, and sputter gas is an argon gas; Reacting gas is high pure nitrogen and oxygen; At first reactive magnetron sputtering cvd nitride nickel counter infrared ray reflectance coating on stainless steel substrate deposits nitrogen nickel oxide absorbing film again, deposits the nickel oxide antireflective coating at last.
Wherein, described nitrogen nickel oxide gradual change absorbing film is the composition graded films, begins from described counter infrared ray reflectance coating wherein that the content of nitrogen reduces gradually till the antireflective coating, and the content of oxygen increases gradually.
Wherein, sputter one deck nickel oxide counter infrared ray reflectance coating on stainless steel substrate, operating pressure 0.2-1.5 Pa, reacting gas nitrogen amount 20-200Sccm.
Wherein, sputter nitrogen nickel oxide absorbing film on the counter infrared ray reflectance coating, operating pressure 0.2-0.8Pa, reacting gas nitrogen, 1: 1 ~ 1:10 of nitrogen oxygen volume ratio, gas flow 60-150Sccm.
Wherein, sputtering sedimentation nickel oxide antireflective coating on nitrogen nickel oxide absorbing film, operating pressure 0.2-0.8Pa, reacting gas amount of oxygen 30-200Sccm.
Thermal-arrest plate coating of the present invention has lower low temperature emissivity; Therefore this film cording has lower heat waste; Good heat insulating, while coating high rigidity, wear-resisting and non-oxidizability material, and also resistivity is low; Therefore the weatherability of heat collector of the present invention and middle temperature serviceability are excellent, are suitable at 300-450 ℃.
The specific embodiment
Temperature solar heat collector thermal-arrest plate comprises stainless steel substrate in of the present invention, is provided with one deck nickel oxide counter infrared ray reflectance coating, nitrogen nickel oxide gradual change absorbing film and nickel oxide antireflective coating on it successively.
Preparation technology is following:
Sputtering sedimentation nickel oxide counter infrared ray reflectance coating on stainless steel substrate, operating pressure 0.2-1.5 Pa, reacting gas nitrogen amount 20-200Sccm; Sputter nitrogen nickel oxide gradual change absorbing film on the counter infrared ray reflectance coating, operating pressure 0.2-0.8Pa, reacting gas nitrogen and oxygen, 1: 1 ~ 1:10 of nitrogen oxygen volume ratio, gas flow 60-150Sccm; Sputtering sedimentation nickel oxide antireflective coating on nitrogen nickel oxide gradual change absorbing film, operating pressure 0.2-0.8Pa, reacting gas amount of oxygen 30-200Sccm.
Claims (3)
1. temperature solar heat collector thermal-arrest plate in a kind comprises stainless steel substrate, it is characterized in that on stainless steel substrate, being provided with successively nickel oxide counter infrared ray reflectance coating, nitrogen nickel oxide gradual change absorbing film and nickel oxide antireflective coating.
2. the described heat collector thermal-arrest of claim 1 plate; It is characterized in that described film adopts the reactive magnetron sputtering method; Sputter gas is an argon gas, and reacting gas is high pure nitrogen and oxygen, at first reactive magnetron sputtering cvd nitride nickel counter infrared ray reflectance coating on stainless steel substrate; Deposit nitrogen nickel oxide absorbing film again, deposit the nickel oxide antireflective coating at last.
3. the described heat collector thermal-arrest of claim 1 plate is characterized in that described nitrogen nickel oxide gradual change absorbing film is the composition graded films, begins from described counter infrared ray reflectance coating wherein that the content of nitrogen reduces gradually till the antireflective coating, and the content of oxygen increases gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210220343XA CN102721211A (en) | 2012-06-29 | 2012-06-29 | Medium-temperature solar thermal collector panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210220343XA CN102721211A (en) | 2012-06-29 | 2012-06-29 | Medium-temperature solar thermal collector panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102721211A true CN102721211A (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210220343XA Pending CN102721211A (en) | 2012-06-29 | 2012-06-29 | Medium-temperature solar thermal collector panel |
Country Status (1)
| Country | Link |
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| CN (1) | CN102721211A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4098956A (en) * | 1976-08-11 | 1978-07-04 | The United States Of America As Represented By The Secretary Of The Interior | Spectrally selective solar absorbers |
| CN1584445A (en) * | 2003-08-20 | 2005-02-23 | 中国科学院广州能源研究所 | NiCrOxNy solar spectrum selective absorbing thin-membrane and preparing method thereof |
| CN101886847A (en) * | 2009-05-11 | 2010-11-17 | 范天方 | Medium-high temperature solar thermal collector tube |
| CN102062485A (en) * | 2010-11-19 | 2011-05-18 | 山东帅克新能源有限公司 | Heat collection plate of solar energy flat plate collector and film plating method for heat collection plate |
-
2012
- 2012-06-29 CN CN201210220343XA patent/CN102721211A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4098956A (en) * | 1976-08-11 | 1978-07-04 | The United States Of America As Represented By The Secretary Of The Interior | Spectrally selective solar absorbers |
| CN1584445A (en) * | 2003-08-20 | 2005-02-23 | 中国科学院广州能源研究所 | NiCrOxNy solar spectrum selective absorbing thin-membrane and preparing method thereof |
| CN101886847A (en) * | 2009-05-11 | 2010-11-17 | 范天方 | Medium-high temperature solar thermal collector tube |
| CN102062485A (en) * | 2010-11-19 | 2011-05-18 | 山东帅克新能源有限公司 | Heat collection plate of solar energy flat plate collector and film plating method for heat collection plate |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121010 |