CN102721210A - Heat collecting plate of solar heat collecting device - Google Patents
Heat collecting plate of solar heat collecting device Download PDFInfo
- Publication number
- CN102721210A CN102721210A CN2012102203406A CN201210220340A CN102721210A CN 102721210 A CN102721210 A CN 102721210A CN 2012102203406 A CN2012102203406 A CN 2012102203406A CN 201210220340 A CN201210220340 A CN 201210220340A CN 102721210 A CN102721210 A CN 102721210A
- Authority
- CN
- China
- Prior art keywords
- heat collecting
- stainless steel
- plate
- infrared ray
- aluminum oxynitride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 12
- 239000010935 stainless steel Substances 0.000 claims abstract description 12
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 14
- 239000006117 anti-reflective coating Substances 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 229910017083 AlN Inorganic materials 0.000 claims description 5
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 238000001755 magnetron sputter deposition Methods 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000011247 coating layer Substances 0.000 abstract 2
- 230000003064 anti-oxidating effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Physical Vapour Deposition (AREA)
Abstract
The invention relates to a heat collecting plate of a solar heat collecting device. The heat collecting plate comprises a stainless steel base plate and is characterized in that an aluminum nitride anti-infrared reflecting film, an aluminum oxynitride gradually-changing absorbing film and an aluminum nitride antireflection film are sequentially arranged on the stainless steel base plate. A coating layer of the stainless steel base plate has low low-temperature emitting rate, so that a film system has low heat loss and good heat-preserving performance. In addition, the coating layer is made of a high-hardness abrasion-resisting anti-oxidizing material and has low resistivity, so that the weather resistance and the intermediate-temperature using performance of the heat collecting device are excellent, and the heat collecting plate is suitable for being used at the temperature of 300-450 DEG C.
Description
Technical field
The invention belongs to solar thermal collector, more particularly, the present invention relates to a kind of solar thermal 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 solar thermal 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:
A kind of solar thermal collector thermal-arrest plate comprises stainless steel substrate, it is characterized in that on stainless steel substrate, being provided with successively aluminium nitride counter infrared ray reflectance coating, aluminum oxynitride gradual change absorbing film and aluminium 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 deposit aluminum nitride counter infrared ray reflectance coating on stainless steel substrate deposits the aluminum oxynitride absorbing film again, last deposition of aluminium oxide antireflective coating.
Wherein, described aluminum oxynitride 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 aluminium nitride counter infrared ray reflectance coating on stainless steel substrate, operating pressure 0.2-1.5 Pa, reacting gas nitrogen amount 20-200Sccm.
Wherein, sputter aluminum oxynitride 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.
Wherein, sputtering sedimentation aluminium oxide antireflective coating on the aluminum oxynitride 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
Solar thermal collector thermal-arrest plate of the present invention comprises stainless steel substrate, is provided with one deck aluminium nitride counter infrared ray reflectance coating, aluminum oxynitride gradual change absorbing film and aluminium oxide antireflective coating on it successively.
Preparation technology is following:
Sputtering sedimentation aluminium nitride counter infrared ray reflectance coating on stainless steel substrate, operating pressure 0.2-1.5 Pa, reacting gas nitrogen amount 20-200Sccm; Sputter aluminum oxynitride gradual change 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; Sputtering sedimentation aluminium oxide antireflective coating on aluminum oxynitride gradual change absorbing film, operating pressure 0.2-0.8Pa, reacting gas amount of oxygen 30-200Sccm.
Claims (3)
1. a solar thermal collector thermal-arrest plate comprises stainless steel substrate, it is characterized in that on stainless steel substrate, being provided with successively aluminium nitride counter infrared ray reflectance coating, aluminum oxynitride gradual change absorbing film and aluminium 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 deposit aluminum nitride counter infrared ray reflectance coating on stainless steel substrate; Deposit the aluminum oxynitride absorbing film again, last deposition of aluminium oxide antireflective coating.
3. the described heat collector thermal-arrest of claim 1 plate is characterized in that described aluminum oxynitride 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 |
|---|---|---|---|
| CN2012102203406A CN102721210A (en) | 2012-06-29 | 2012-06-29 | Heat collecting plate of solar heat collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102203406A CN102721210A (en) | 2012-06-29 | 2012-06-29 | Heat collecting plate of solar heat collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102721210A true CN102721210A (en) | 2012-10-10 |
Family
ID=46947039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102203406A Pending CN102721210A (en) | 2012-06-29 | 2012-06-29 | Heat collecting plate of solar heat collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102721210A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868260A (en) * | 2012-12-13 | 2014-06-18 | 郑金祥 | film forming method of solar heat collector |
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 |
| CN1056159A (en) * | 1991-06-18 | 1991-11-13 | 北京市太阳能研究所 | Solar selective absorbing film and preparation |
| CN101793437A (en) * | 2009-12-31 | 2010-08-04 | 沈阳百乐真空技术有限公司 | Multi-purpose solar spectrum selective absorbing coating and preparation method thereof |
| 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 CN2012102203406A patent/CN102721210A/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 |
| CN1056159A (en) * | 1991-06-18 | 1991-11-13 | 北京市太阳能研究所 | Solar selective absorbing film and preparation |
| CN101793437A (en) * | 2009-12-31 | 2010-08-04 | 沈阳百乐真空技术有限公司 | Multi-purpose solar spectrum selective absorbing coating and preparation method thereof |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868260A (en) * | 2012-12-13 | 2014-06-18 | 郑金祥 | film forming method of solar heat collector |
| CN103868260B (en) * | 2012-12-13 | 2016-04-06 | 郑金祥 | Thin Film Forming Method for Solar Thermal Collector |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121010 |