CN105222373A - Glass-metal Vacuum Package one dimension follows the tracks of focusing solar heat collector - Google Patents
Glass-metal Vacuum Package one dimension follows the tracks of focusing solar heat collector Download PDFInfo
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- CN105222373A CN105222373A CN201410228665.8A CN201410228665A CN105222373A CN 105222373 A CN105222373 A CN 105222373A CN 201410228665 A CN201410228665 A CN 201410228665A CN 105222373 A CN105222373 A CN 105222373A
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- Prior art keywords
- heat
- thermal
- heat collector
- arrest pipeline
- pipeline
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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
- Y02E10/44—Heat exchange systems
Abstract
The present invention relates to solar light-heat power-generation technical field, disclose a kind of glass-metal Vacuum Package one dimension and follow the tracks of focusing solar heat collector.This glass-metal Vacuum Package one dimension is followed the tracks of focusing solar heat collector and is comprised: housing, and described housing is transparent; Thermal-arrest pipeline, described thermal-arrest pipeline is arranged in described enclosure interior parallel to each other, and mutual parallel connection is connected with female pipe, is set to vacuum between housing and thermal-arrest pipeline; Heat absorbing fins, described heat absorbing fins is close to the heat-absorbing chamber of surface as heat collector of thermal-arrest pipeline, and this heat absorbing fins is the ripple type mated with thermal-arrest pipeline, and this heat absorbing fins surface is laid with coating for selective absorption.There is good freezing tolerance, higher thermal-arrest heat transfer effect, longer service life and lower cost of manufacture.
Description
Technical field
The present invention relates to solar light-heat power-generation system, particularly a kind of glass-metal Vacuum Package one dimension follows the tracks of focusing solar heat collector.
Background technology
The energy is social development, the basis of human progress.Along with industrial expansion goes from strength to strength and human wants expanding day, Energy situation day is becoming tight, and green energy resource is considered to the approach fundamentally solving mankind's energy demand.
Wherein solar energy is because of its " reserves " unlimitedness, distribution generality, the feature of clean and economy and be considered to one of the most potential new forms of energy.The feature of solar light-heat power-generation is good with electrical network suitability, and photoelectric conversion rate is high, and environmental protection is adjustable, thus becomes the important development direction of Solar use.
The key of solar light-heat power-generation is by gathering of solar energy, produce the temperature needed for generating and energy, thus the heat collector part of solar light-heat power-generation system becomes the key of whole system, and it directly affects the economy of light thermoelectric conversion efficiency and cost of electricity-generating.
Existing solar hot water heat collector has various structures, generally can be divided into plate-type collector, vacuum heat collection pipe and heat pipe vacuum hot collector.Plate-type collector cost performance is higher, heat absorption heat exchange interface place is relatively mild, Energy distribution is more even, there is not focus in whole interface, overall heat exchange is comparatively even, and service life is longer, and therefore plate-type collector occupies consequence in solar energy optical-thermal field, but plate-type collector anti-freezing property is poor, is unsuitable for northern area and uses.Vacuum heat collection pipe can be low temperature resistant-30 DEG C, but the breakage rate of glass pipe fitting is higher, and low temperature usefulness is poor, and the vacuum heat collection pipe of direct current mode has the danger of booster in summer.Heat pipe vacuum hot collector usefulness is better, but there is the danger that glass tube easily splits equally, therefore, not yet occurs a kind of universality, the solar thermal collector that cost performance is higher at present.
Summary of the invention
A kind of novel glass-metal Vacuum Package one dimension is the object of the present invention is to provide to follow the tracks of focusing solar heat collector.There is good freezing tolerance, higher thermal-arrest heat transfer effect, longer service life and lower cost of manufacture.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of glass-metal Vacuum Package one dimension and follow the tracks of focusing solar heat collector, and comprising: housing, described housing is transparent; Thermal-arrest pipeline, described thermal-arrest pipeline is arranged in described enclosure interior parallel to each other, and mutual parallel connection is connected with female pipe, is set to vacuum between housing and thermal-arrest pipeline; Heat absorbing fins, described heat absorbing fins is close to the heat-absorbing chamber of surface as heat collector of thermal-arrest pipeline, and this heat absorbing fins is the ripple type mated with thermal-arrest pipeline, and this heat absorbing fins surface is laid with coating for selective absorption.
Preferably, described thermal-arrest pipeline is metal tube.
Preferably, described thermal-arrest pipeline is parallel to collecting tray, is connected with female pipe by reducer union.
Preferably, described thermal-arrest pipeline parallel equidistant described enclosure interior is arranged in.
Preferably, described housing is Pyrex.
Preferably, described housing is cylindrical or elliptical cylinder-shape.
Preferably, described hull outside wall coating anti-reflection film.
Preferably, described housing is vacuumized by vacuum pumping mouth.
Preferably, the pipeline of described hull outside is incubated by parcel insulation material or employing vacuum heat-preserving tube.
Preferably, evaporable and nonevaporable getter is filled and presented in described housing to maintain the vacuum of vacuum chamber.
Embodiment of the present invention compared with prior art, the main distinction and effect thereof are: many thermal-collecting tubes of parallel connection combine with the heat absorbing fins being positioned at heat collection tube, light trapping is provided with to the solar spectrum injected, improves the thermal-arrest heat exchange efficiency of heat collector.Corrugated heat absorbing fins increases and contact area between thermal-collecting tube, makes heat-transfer surface uniformity of temperature profile, and owing to adopting corrugated plating heat-absorbing structure, the hot target of equivalent radiated power area ratio tradition single tube of comb heat collector is low, considerably reduces black body radiation heat loss.Parallel connection pipeline flow resistance is little, can solve the little problem of temperature rise by circulating-heating, reduces system pipeline thermal losses and systemic circulation pump power consumption, thus improves the thermal-arrest heat exchange efficiency of solar thermal collector, also simplify manufacturing process and heat preservation method.Vacuum cavity makes better heat preservation, makes heat collector possess better freezing tolerance, solves glass tube vacuum encapsulation problem, extends the service life of heat collector.
Accompanying drawing explanation
Fig. 1 is the structural representation of the glass-metal Vacuum Package one dimension tracking focusing solar heat collector of the embodiment of the present invention;
Fig. 2 is that the section of the glass-metal Vacuum Package one dimension tracking focusing solar heat collector of the embodiment of the present invention faces structural representation;
Fig. 3 is the cross sectional side view of the glass-metal Vacuum Package one dimension tracking focusing solar heat collector of the embodiment of the present invention;
Fig. 4 is that the glass-metal Vacuum Package one dimension of the embodiment of the present invention follows the tracks of focusing solar heat collector corrugated board structures front view.
Fig. 5 is that the glass-metal Vacuum Package one dimension of the embodiment of the present invention follows the tracks of focusing solar heat collector corrugated board structures side view.
Detailed description of the invention
In the following description, many ins and outs are proposed in order to make reader understand the application better.But, persons of ordinary skill in the art may appreciate that even without these ins and outs with based on the many variations of following embodiment and amendment, also can realize each claim of the application technical scheme required for protection.
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiments of the present invention are described in further detail.In figure, same or analogous component uses the same reference numerals to represent.
See Fig. 1, Fig. 2 and Fig. 3, for this glass-metal Vacuum Package one dimension follows the tracks of the structural representation of focusing solar heat collector.This glass-metal Vacuum Package one dimension is followed the tracks of focusing solar heat collector and is comprised: many thermal-arrest pipelines 1 in parallel, between thermal-arrest pipeline 1 in parallel, equidistant parallel is arranged, the heat absorbing fins 2 of slot type heat-absorbing chamber is provided as at the sensitive surface of solar thermal collector, this heat absorbing fins 2 is close to the surface of pipeline 1, and undulate, the parallel slot type cavity of Wavelike finned formation, makes light enter rear formation light trapping, thus reaches better heat transfer effect.Heat absorbing fins 2 surface coating coating for selective absorption 3, for absorbing solar visible light spectrum, reflects infrared light.Housing 4, housing 4 adopts Pyrex to form cylindrical or elliptical cylinder-shape, and this surface of shell is coated with anti-reflection film 5, and anti-reflection film 5, for reducing the loss of surface of shell sunshine, increases the projectile energy of sunshine.Reducing connector 7, many pipelines 1 are parallel to collecting tray 6, are connected with female pipe 8 by reducer union 7.Vacuum pumping mouth 9, housing 4 is vacuumized by vacuum pumping mouth 9, and vacuum has lower gas conduction loss, enhances the photo-thermal efficiency of heat collector.
See Fig. 2, for this glass-metal Vacuum Package one dimension follows the tracks of the cross-sectional view of focusing solar heat collector.This parallel connection thermal-arrest pipeline 1 arranges with the tubule that n diameter is d, substitutes the monotube gathering heat pipe that tradition (the hot target of slot type) diameter is D=nd, and adopts metal-high boron glass vacuum sealing technique to realize vacuum high-temperature.
First, when total flow is identical, flow velocity improves n doubly, and coefficient of heat transfer h is:
If definition u is the flow velocity of the hot target of single tube, the single tube coefficient of heat transfer (h
i d) and the hot coefficient (h of comb
i d) ratio be:
Visible, when flow velocity is identical, the hot target of oil film Temperature Difference Ratio single tube low (1/n) of the hot target of comb
0.2=1.37 times (establishing n=5), the low n of flow is doubly; Pipeline caliber can significantly reduce, thus considerably reduces system pipeline thermal losses and systemic circulation pump power consumption.
In addition, owing to have employed corrugated plating heat-absorbing structure, the hot target of equivalent radiated power area ratio tradition single tube of the hot target of comb is low about 3 times, considerably reduces black body radiation heat loss.When focusing is than when little, this advantage of the hot target of comb is especially obvious on the impact of system effectiveness.
Although its vacuum insulating glass structure brings extra boundary reflection light loss (introducing glass tube with vacuum transmitance), but bring two large incomes: 1) because vacuum condition allows to adopt selective absorbing plated film, 2) forced convection and Natural Heat Convection loss is reduced, improve the heat stability of system, and be easy to safeguard.
Further, the present invention adopts coating for selective absorption to greatly reduce radiation, forced convection and free convection heat loss.Under vacuum condition, absorb plated film and can maintain a long-term stability harmless, thus improve the durability of system.
See Fig. 4 and Fig. 5, for this glass-metal Vacuum Package one dimension follows the tracks of the structural representation of focusing solar heat collector heat absorbing fins.The heat absorbing fins 2 of this glass-metal Vacuum Package one dimension tracking focusing solar heat collector embodiment is close to the surface of thermal-arrest pipeline 1, and undulate, the parallel little cavity of Wavelike finned formation, makes light enter rear formation light trapping, thus reaches better heat transfer effect.Heat absorbing fins 2 surface coating coating for selective absorption 3, for absorbing solar visible light, reflects infrared light, improves the photo-thermal efficiency of heat collector further.
In addition, outside the female pipe 8 of heat collector two ends turnover stream, insulation material can be wrapped up, also can sheathed vacuum heat-preserving sleeve pipe insulation.
Although by referring to some of the preferred embodiment of the invention, to invention has been diagram and describing, but those of ordinary skill in the art should be understood that and can do various change to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (10)
1. glass-metal Vacuum Package one dimension follows the tracks of a focusing solar heat collector, it is characterized in that, comprising:
Housing, described housing is transparent;
Thermal-arrest pipeline, described thermal-arrest pipeline is arranged in described enclosure interior parallel to each other, and mutual parallel connection is connected with female pipe, is set to vacuum between housing and thermal-arrest pipeline;
Heat absorbing fins, described heat absorbing fins is close to the heat-absorbing chamber of surface as heat collector of thermal-arrest pipeline, and this heat absorbing fins is the ripple type mated with thermal-arrest pipeline, and this heat absorbing fins surface is laid with coating for selective absorption.
2. heat collector according to claim 1, is characterized in that, described thermal-arrest pipeline is metal tube.
3. heat collector according to claim 1, is characterized in that, described thermal-arrest pipeline is parallel to collecting tray, is connected with female pipe by reducer union.
4. heat collector according to claim 1, is characterized in that, is arranged in described enclosure interior to described thermal-arrest pipeline parallel equidistant.
5. heat collector according to claim 1, is characterized in that, described housing is Pyrex.
6. heat collector according to claim 1, is characterized in that, described housing is cylindrical or elliptical cylinder-shape.
7. thermal-collecting tube according to claim 1, is characterized in that, described hull outside wall coating anti-reflection film.
8. heat collector according to claim 1, is characterized in that, is vacuumized by described housing by vacuum pumping mouth.
9. heat collector according to claim 1, is characterized in that, the pipeline of described hull outside is by parcel insulation material or adopt vacuum heat-preserving tube to be incubated.
10. heat collector according to claim 1, is characterized in that, fills and presents evaporable and nonevaporable getter to maintain the vacuum of vacuum chamber in described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228665.8A CN105222373A (en) | 2014-05-27 | 2014-05-27 | Glass-metal Vacuum Package one dimension follows the tracks of focusing solar heat collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228665.8A CN105222373A (en) | 2014-05-27 | 2014-05-27 | Glass-metal Vacuum Package one dimension follows the tracks of focusing solar heat collector |
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| Publication Number | Publication Date |
|---|---|
| CN105222373A true CN105222373A (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410228665.8A Pending CN105222373A (en) | 2014-05-27 | 2014-05-27 | Glass-metal Vacuum Package one dimension follows the tracks of focusing solar heat collector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907872A (en) * | 2017-04-17 | 2017-06-30 | 安徽晶润新能源有限公司 | Solar energy vacuum heat collecting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100199970A1 (en) * | 2009-02-12 | 2010-08-12 | William Joseph Blomberg | Trough heat collector element insulator |
| CN202813843U (en) * | 2012-08-31 | 2013-03-20 | 益科博能源科技（上海）有限公司 | Parallel-multi-tube type vacuum heat collecting tube |
| CN103673325A (en) * | 2012-08-31 | 2014-03-26 | 益科博能源科技（上海）有限公司 | Plate type multi-tube solar thermal collector |
| CN203880975U (en) * | 2014-05-27 | 2014-10-15 | 益科博能源科技（上海）有限公司 | Glass-metal vacuum packaging one-dimensional tracking focusing solar thermal collector |
-
2014
- 2014-05-27 CN CN201410228665.8A patent/CN105222373A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100199970A1 (en) * | 2009-02-12 | 2010-08-12 | William Joseph Blomberg | Trough heat collector element insulator |
| CN202813843U (en) * | 2012-08-31 | 2013-03-20 | 益科博能源科技（上海）有限公司 | Parallel-multi-tube type vacuum heat collecting tube |
| CN103673325A (en) * | 2012-08-31 | 2014-03-26 | 益科博能源科技（上海）有限公司 | Plate type multi-tube solar thermal collector |
| CN203880975U (en) * | 2014-05-27 | 2014-10-15 | 益科博能源科技（上海）有限公司 | Glass-metal vacuum packaging one-dimensional tracking focusing solar thermal collector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907872A (en) * | 2017-04-17 | 2017-06-30 | 安徽晶润新能源有限公司 | Solar energy vacuum heat collecting device |
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