CN201852338U - Solar heat collecting tube with intermediate and high temperature selective absorption composite coating - Google Patents
Solar heat collecting tube with intermediate and high temperature selective absorption composite coating Download PDFInfo
- Publication number
- CN201852338U CN201852338U CN201020614342XU CN201020614342U CN201852338U CN 201852338 U CN201852338 U CN 201852338U CN 201020614342X U CN201020614342X U CN 201020614342XU CN 201020614342 U CN201020614342 U CN 201020614342U CN 201852338 U CN201852338 U CN 201852338U
- Authority
- CN
- China
- Prior art keywords
- coating
- solar
- composite coating
- heat collecting
- collecting tube
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
- F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
-
- 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
-
- 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
- Y02E10/44—Heat exchange systems
Abstract
The utility model relates to a solar heat collecting tube with an intermediate and high temperature selective absorption composite coating, which belongs to the technical field of solar heat utilization. The solar heat collecting tube consists of a substrate and a solar selective absorption coating coated on the substrate, and is characterized in that the solar selective absorption coating consists of a TiO2/PbS composite coating. The coating of the heat collecting tube has excellent characteristic of selectively absorbing solar spectrums and has good thermal stability, the full color absorption rate on the solar spectrums is greater than or equal to 96%, the total emission rate is less than or equal to 10%, and the maximum temperature resistance is greater than 350 DEG C. The coating has the performances of good temperature resistance, corrosion resistance and wear resistance, a long service life and a self-cleaning function. The solar heat collecting tube can be used under the intermediate and high temperature, which is conducive to broadening the application scope and field of solar heat collecting tubes and the energy is saved.
Description
Technical field
The utility model belongs to the solar energy utilization technique field, and characteristics relate to the structural design of the solar energy heat collection pipe with middle high temperature coating for selective absorption of sunlight spectrum.
Background technology
Existing solar energy heat collection pipe with solar selectively absorbing coating can divide two kinds of low temperature and high temperature.The solar energy heat collection pipe of domestic a large amount of production practicalities at present all belongs to low form, and its coating structure is formed with the magnetically controlled sputter method sputter by reflecting layer, absorbed layer and antireflection layer.This combination rete has good selective absorption to solar spectrum, but because the single-particle of a large amount of aluminium that evenly exists in the composite membrane is tending towards focusing under higher temperature, make the composite film variable color, destroyed the photo-thermal conversion performance, so the high-temperature stability of thermal-collecting tube is relatively poor.Can not be used in the utilization of solar energy high temperature.
The development of the heat utilization of solar energy, broken the situation that single in the past low temperature utilizes, the middle high temperature utilization of solar energy has become the direction of solar thermal utilization development, middle high temperature solar coating not only requires to have selectivity preferably, and requires directly to contact, have with external environment better weather.The red high temperature coating of present solar energy has following several: black chrome coating is adapted at using under the hot conditions, also has better weather and corrosion resistance simultaneously.But existing black chromium process need be in high electric current close (15-2000A/dm3) and low temperature (＜250C, operation down, poorly conductive because of solution, can produce a large amount of Joule heats during production, thus need cooling just can keep ordinary production, thereby improved cost.And there is problem of environmental pollution in electroplating black chromium, and investment is bigger; Black bore, the corrosion-resistant of black nickel, pitch-dark material heat emission is than high, heat loss is big, infrared emittance can not be very low, and thickness is relatively poor and be difficult to cleaning with matrix bond; Stainless steel one carbon/selective copper absorbing film has good optical performance, a=0.92-0.94, e=0.07-0.08.But it is wear-resisting and decay resistance is relatively poor.And the solar energy absorbing coating that uses at present mostly is black, and color is single, and is not attractive in appearance, lacks ornamentally, can not make solar water heater and building harmonious on tone, more should not be used as the heat absorbing coating of solar energy housing.Therefore, no matter from function and economic angle, all there is inferior position more or less in various coating materials.And a lot of coating character variation under high-temperature operation have been brought certain difficulty to solar thermal utilization.
The utility model content
The purpose of this utility model is for overcoming the existing technical deficiency of high-temperature selective absorber coatings thermal-collecting tube in the solar energy that has, design a kind of novel solar energy heat collection pipe, select a kind of solar selectively absorbing coating by TiO with middle high-temperature selective composite coating for absorbing
2The new structure that/PbS composite coating is formed.Coating of the present utility model has the selection absorption characteristic to the solar spectrum excellence, can under middle hot conditions, use, Heat stability is good is higher to the solar spectrum absorptivity.
The solar energy heat collection pipe with middle high-temperature selective composite coating for absorbing of the utility model design reaches the solar selectively absorbing coating that sprays by matrix and forms on this matrix, it is characterized in that this solar selectively absorbing coating is by TiO
2/ PbS composite coating is formed.
Described TiO
2/ PbS composite coating is the translucent TiO of or graininess crystal grain layer and coating bar-shaped by PbS
2Rete is formed.
Described TiO
2/ PbS composite coating adopts sol-gel process to be coated on the matrix.Reduced the complexity of equipment in the production process, more helped the large-scale production of product and reduce cost.
Described TiO
2PbS crystal grain layer in the/PbS composite coating is the carbon-nitrogen doped PbS rete of annealing.Coating heat endurance and photocatalytic activity have been improved.
The beneficial effects of the utility model mainly show: coating of the present utility model has the selection absorption characteristic to the solar spectrum excellence, can use under middle hot conditions, and Heat stability is good is to panchromatic absorptivity 〉=96% of solar spectrum; Total emissivity≤10%; High-temperature resistant is greater than 350 degree.Coating has good temperature tolerance, corrosion resistance and wearability performance, long service life and has self-cleaning function.
Description of drawings
Fig. 1 is a high-temperature solar thermal-collecting tube example structure schematic diagram in the utility model.
Fig. 2 is for adopting the structural profile schematic diagram of the utility model coating.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.
As shown in Figure 1, a kind of solar energy heat collection pipe with middle high-temperature selective composite coating for absorbing is by forming as the glass inner tube 1 of coated substrate and glass outer tube 3 and solar selectively absorbing coating 2.
As shown in Figure 2, described solar selectively absorbing coating 2 is translucent TiO of or graininess crystal grain layer 21 and coating bar-shaped by PbS
2Rete 22 constitutes.
Present embodiment adopts sol-gel method craft that solar selectively absorbing coating 2 is coated on the glass inner tube 1 as coated substrate; Be evacuated 4 between glass inner tube 1 and the glass outer tube 3.
After the solar energy heat collection pipe with middle high-temperature selective composite coating for absorbing of above-mentioned structure tested, the result showed that the solar selectively assimilation effect of this solar energy heat collection pipe is: to panchromatic absorptivity 〉=96% of solar spectrum; Total emissivity≤10%; High-temperature resistant is greater than 350 degree.
Claims (4)
1. the solar energy heat collection pipe with middle high-temperature selective composite coating for absorbing reaches the solar selectively absorbing coating that sprays by matrix and forms on this matrix, it is characterized in that this solar selectively absorbing coating is by TiO
2/ PbS composite coating is formed.
2. the solar energy heat collection pipe with middle high-temperature selective composite coating for absorbing according to claim 1 is characterized in that, described TiO
2/ PbS composite coating is the translucent TiO of or graininess crystal grain layer and coating bar-shaped by PbS
2Rete is formed.
3. the solar energy heat collection pipe with middle high-temperature selective composite coating for absorbing according to claim 1 is characterized in that, described TiO
2/ PbS composite coating adopts sol-gel process to be coated on the matrix.
4. the solar energy heat collection pipe with middle high-temperature selective composite coating for absorbing according to claim 1 is characterized in that, described TiO
2PbS crystal grain layer in the/PbS composite coating is the carbon-nitrogen doped PbS rete of annealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020614342XU CN201852338U (en) | 2010-11-19 | 2010-11-19 | Solar heat collecting tube with intermediate and high temperature selective absorption composite coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020614342XU CN201852338U (en) | 2010-11-19 | 2010-11-19 | Solar heat collecting tube with intermediate and high temperature selective absorption composite coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201852338U true CN201852338U (en) | 2011-06-01 |
Family
ID=44094729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020614342XU Expired - Fee Related CN201852338U (en) | 2010-11-19 | 2010-11-19 | Solar heat collecting tube with intermediate and high temperature selective absorption composite coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201852338U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014045241A2 (en) | 2012-09-20 | 2014-03-27 | Ecole Polytechnique Federale De Lausanne (Epfl) | Method for hardening a coating of a solar collector element, and elements produced by means of said method |
-
2010
- 2010-11-19 CN CN201020614342XU patent/CN201852338U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014045241A2 (en) | 2012-09-20 | 2014-03-27 | Ecole Polytechnique Federale De Lausanne (Epfl) | Method for hardening a coating of a solar collector element, and elements produced by means of said method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200968738Y (en) | Middle- and high-temperature solar thermal-collecting tube | |
| CN103029374A (en) | Medium-high temperature solar photothermal selective absorbing coating | |
| CN201047681Y (en) | Solar water heater high-efficiency vacuum thermal-collecting tube | |
| CN101886848A (en) | Solar spectrum selective absorbing film and preparation method thereof | |
| CN205403213U (en) | Novel solar energy decalescence films | |
| CN201852338U (en) | Solar heat collecting tube with intermediate and high temperature selective absorption composite coating | |
| CN201273736Y (en) | Solar energy heat collecting tube | |
| CN104006549A (en) | Flat plate heat collector with vein-shaped runners | |
| CN202083144U (en) | Solar spectrum selective absorbing thin film | |
| CN202141821U (en) | Medium/high-temperature selective solar energy absorption coating | |
| CN105568238A (en) | Preparation method for film system provided with solar selective absorption thin film | |
| CN204678708U (en) | Stainless steel corrugated type solar heat collector | |
| CN202119152U (en) | Coating having solar energy selective absorption property | |
| CN201844601U (en) | Solar heat collection tube | |
| CN202281395U (en) | Solar energy air heat collector | |
| CN201311113Y (en) | Solar heat collecting plate core | |
| CN102721208A (en) | Heat collecting plate of solar heat collector | |
| CN201866965U (en) | Solar heat collection panel core with medium/high-temperature selectively absorbing composite coating | |
| CN202066240U (en) | Coating structure of vacuum heat collecting pipe | |
| CN207347660U (en) | A kind of coating structure of new type solar energy absorption film | |
| CN203249419U (en) | Solar energy selective absorption film system suitable for being utilized by intermediate and high temperature heat | |
| CN202452723U (en) | Metallurgical slag-sprayed solar thermal collector | |
| CN102734965A (en) | Coating of medium-high-temperature solar heat collecting pipe | |
| CN201795612U (en) | Multifunctional flat-plate solar collector | |
| CN201170668Y (en) | All-glass vacuum sun heat-collection tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing Jiasheng Century Technology Co.,Ltd. Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20131119 |