CN101344330A - Light concentration type full glass solar heat collection pipe - Google Patents
Light concentration type full glass solar heat collection pipe Download PDFInfo
- Publication number
- CN101344330A CN101344330A CNA2008101962770A CN200810196277A CN101344330A CN 101344330 A CN101344330 A CN 101344330A CN A2008101962770 A CNA2008101962770 A CN A2008101962770A CN 200810196277 A CN200810196277 A CN 200810196277A CN 101344330 A CN101344330 A CN 101344330A
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- glass tube
- glass
- solar heat
- heat collection
- type full
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
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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
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Abstract
The invention discloses a condensing all-glass solar energy heat collecting tube and relates to a solar energy light-heat conversion element which belongs to the structure technical field of the heat collecting tubes. The condensing all-glass solar energy heat collecting tube of the invention comprises an inner glass tube and an outer glass tube which are mutually packaged at one end, vacuum pumping is carried out between the inner and the outer glass tubes, a heat absorbing film is arranged on the outer surface of the inner glass tube, a reflection part is arranged between the inner and the outer glass tubes, and the condensing all-glass solar energy heat collecting tube is characterized in that the outer diameter of the inner glass tube is one sixth to one half of the outer diameter of the outer glass tube, and the inner glass tube is eccentric to the outer glass tube for arrangement. As the arrangement, the inner glass tube of the invention can be made smaller relative to the diameter of the outer glass tube, thereby being conductive to the timely output of heat energy, improving thermal efficiency, having the advantages of high thermal efficiency, simple process, low cost and no ash accumulation on reflective boards, etc., and being widely applied to solar heating and cooling, seawater desalination and other related fields.
Description
Technical field
The present invention relates to a kind of solar energy thermal conversion element---the technical field of structures of thermal-collecting tube.
Background technology
All-glass vacuum thermal-collecting tube has two kinds of versions, and first on behalf of inside and outside layer glass pipe that an end is sealed mutually, between vacuumize, two glass tube arranged concentric are provided with absorption film at the outer surface of inner glass tube.In order to contact with light to greatest extent, the interior glass appearance surface area of this product needs to strengthen as far as possible.Its defective is: because the heat transfer medium of inner glass tube internal memory is more, can not in time heat be conducted, heat utilization efficiency be not high.Second assembles surface to inner glass tube on behalf of the light that has adopted optically focused reflectance coating or light gathering baffle-board to reflect on the basis of first generation product, can make the inner glass tube than minor diameter, tries hard to improve heat conduction efficiency.But,, thereby limited the application of solar energy optical-thermal conversion in each field so the conduction efficiency of second generation product does not improve too much than first generation product because existing interior outer glass pipe or arranged concentric can not be made littler inner glass tube.
Summary of the invention
The object of the invention is to design a kind of light concentration type full glass solar heat collection pipe that can reach higher heat conduction efficiency by littler glass tube.
The present invention includes the inside and outside glass tube that an end is sealed mutually, vacuumize between the inside and outside glass tube, outer surface at inner glass tube is provided with absorption film, between inside and outside glass tube, reflecting element is set, the external diameter that it is characterized in that inner glass tube is 1/6～1/2 of an outer glass pipe internal diameter, and inner glass tube is eccentric in outer glass pipe and arranges.
The present invention uses nonimaging optically focused, need not to follow the tracks of the sun and can realize spotlight effect.In order to ensure preferable spotlight effect, the external diameter of inner glass tube of the present invention is not less than 1/6 of outer glass pipe external diameter.For reach bigger optically focused than and reduce heat transfer medium in the inner glass tube, obtain higher output temperature, heat transfer rate and heat transfer efficiency, the external diameter of inner glass tube of the present invention is not more than 1/2 of outer glass pipe external diameter.In order to realize preferable spotlight effect, inner glass tube of the present invention is eccentric in outer glass pipe and arranges.
Because above setting, inner glass tube of the present invention can make littler with respect to the caliber of outer glass pipe, be beneficial to timely output heat energy, improve the thermal efficiency, have high temperature, efficient, technology is simple, cost is low, reflector multiple advantages such as dust stratification not, can be widely used in the association areas such as solar energy hot, refrigeration, desalinization.
Preferable technical scheme is: the external diameter of described inner glass tube is 1/3 of an outer glass pipe internal diameter, and existing preferable spotlight effect has bigger optically focused ratio and less heat transfer medium again, obtains higher output temperature, heat transfer rate and heat transfer efficiency.
In actual production, described inner glass tube is made up of welding section and transformation segment, and described welding Duan Yiduan connects transformation segment, and the welding section other end connects outer glass pipe.
For economical with materials, described welding section and transformation segment are isometrical, and transformation segment is eccentric in the welding section and arranges.
Processing for convenience, described welding section external diameter also can be greater than transformation segment, and transformation segment is eccentric in the welding section and arranges.
In order to improve the light-receiving rate, reflecting element of the present invention is a reflecting plate.
The reflecting surface of the cross section of described reflecting plate is ω shape.
For fear of thermal contact conductance, the minimum range between the crosspoint, center of described ω shape and the outer surface of inner glass tube is 1～10mm.
For maximum land productivity light source, realize preferable spotlight effect, ω shape of the present invention is two circle involutes of basic circle for the outer surface with inner glass tube, or the double-paraboloid line, or the inboard is parabola, or is made up of three sections different parabolas for two circle involutes, the outside.
In addition, produce for convenience, install, reflecting element of the present invention also can be the reflectance coating at the inner surface of glass outer tube.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the left lateral view of Fig. 1.
Fig. 3 is the A-A sectional drawing of Fig. 1.
Fig. 4 is an another kind of structural representation of the present invention.
Fig. 5 is the left lateral view of Fig. 4.
Fig. 6 is the B-B sectional drawing of Fig. 4.
Fig. 7 is the another kind of B-B sectional drawing of Fig. 4.
Fig. 8 is a kind of structural representation of reflecting plate.
Fig. 9 is second kind of structural representation of reflecting plate.
Figure 10 is the third structural representation of reflecting plate.
Figure 11 is the 4th a kind of structural representation of reflecting plate.
The specific embodiment
As shown in Figure 1, 2, 3, the present invention mainly is made up of inner glass tube 1, outer glass pipe 2, reflecting plate 3, inner glass tube 1 outer surface is provided with absorption film, inner glass tube 1 is divided into welding section 1-1 and transformation segment 1-2, welding section 1-1 and transformation segment 1-2 are isometrical, transformation segment 1-2 is eccentric in welding section 1-1 and arranges, the end of welding section 1-1 connects transformation segment 1-2, the other end sealing-in outer glass pipe 2 of welding section 1-1, vacuumize between the inside and outside glass tube 1,2, and make the transformation segment 1-2 of inner glass tube 1 be eccentric in outer glass pipe 2 layouts.
The external diameter of inner glass tube is 1/6～1/2 of an outer glass pipe internal diameter, is 1/3 among the figure.
The reflecting surface that cross section is set between inside and outside glass tube 1,3 is the reflecting plate 3 of ω shape, and the minimum range σ between the crosspoint, center of ω shape and the outer surface of inner glass tube is 1～10mm.
Shown in Fig. 4,5,6, the present invention mainly is made up of inner glass tube 1, outer glass pipe 2, reflecting plate 3, inner glass tube 1 outer surface is provided with absorption film, inner glass tube 1 is divided into welding section 1-1 and transformation segment 1-2, the diameter of welding section 1-1 is less than transformation segment 1-2, transformation segment 1-2 is eccentric in welding section 1-1 and arranges, the end of welding section 1-1 connects transformation segment 1-2, the other end sealing-in outer glass pipe 2 of welding section 1-1, vacuumize between the inside and outside glass tube 1,2, and make the transformation segment 1-2 of inner glass tube 1 be eccentric in outer glass pipe 2 layouts.
The external diameter of inner glass tube is 1/6～1/2 of an outer glass pipe internal diameter, is 1/3 among the figure.
The reflecting surface that cross section is set between inside and outside glass tube 1,3 is the reflecting plate 3 of ω shape, and the minimum range σ between the crosspoint, center of ω shape reflecting plate and the outer surface of inner glass tube is 1～10mm.
As shown in Figure 7, reflectance coating 3 ' the be fixedly connected on inner surface of glass outer tube 1, reflectance coating 3 ' can be to aluminize or silver coating.
As shown in Figure 8, the ω shape of the reflecting surface of reflecting plate is two circle involutes of basic circle for the outer surface with the evaporator section of glass heat pipe.
As shown in Figure 9, the ω shape of the reflecting surface of reflecting plate is the double-paraboloid line.
As shown in figure 10, the ω shape of the reflecting surface of reflecting plate is that the inboard is two circle involutes outside, at two continuous parabolas of outside difference of two circle involutes.
As shown in figure 11, the ω shape of the reflecting surface of reflecting plate is a symmetric figure, and every side is made up of three sections different parabolas.
Claims (10)
1, light concentration type full glass solar heat collection pipe, comprise the inside and outside glass tube that an end is sealed mutually, vacuumize between the inside and outside glass tube, outer surface at inner glass tube is provided with absorption film, between inside and outside glass tube, reflecting element is set, the external diameter that it is characterized in that inner glass tube is 1/6～1/2 of an outer glass pipe internal diameter, and inner glass tube is eccentric in outer glass pipe and arranges.
2, according to the described light concentration type full glass solar heat collection pipe of claim 1, the external diameter that it is characterized in that described inner glass tube is 1/3 of an outer glass pipe internal diameter.
3, according to claim 1 or 2 described light concentration type full glass solar heat collection pipes, it is characterized in that described inner glass tube is made up of welding section and transformation segment, described welding Duan Yiduan connects transformation segment, and the welding section other end connects outer glass pipe.
4, according to the described light concentration type full glass solar heat collection pipe of claim 3, it is characterized in that described welding section and transformation segment are isometrical, transformation segment is eccentric in the welding section and arranges.
5, according to the described light concentration type full glass solar heat collection pipe of claim 3, it is characterized in that described welding section external diameter greater than transformation segment, transformation segment is eccentric in the welding section and arranges.
6,, it is characterized in that described reflecting element is a reflecting plate according to the described light concentration type full glass solar heat collection pipe of claim 1.
7,, it is characterized in that the reflecting surface of the cross section of described reflecting plate is ω shape according to the described light concentration type full glass solar heat collection pipe of claim 6.
8,, it is characterized in that the minimum range between the outer surface of the crosspoint, center of described ω shape and inner glass tube is 1～10mm according to the described light concentration type full glass solar heat collection pipe of claim 7.
9, according to claim 7 or 8 described light concentration type full glass solar heat collection pipes, it is characterized in that described ω shape is two circle involutes of basic circle for the outer surface with inner glass tube, or the double-paraboloid line, or the inboard is parabola, or is made up of three sections different parabolas for two circle involutes, the outside.
10,, it is characterized in that described reflecting element is a reflectance coating, is arranged on the inner surface of glass outer tube according to the described light concentration type full glass solar heat collection pipe of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101962770A CN101344330A (en) | 2008-08-27 | 2008-08-27 | Light concentration type full glass solar heat collection pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101962770A CN101344330A (en) | 2008-08-27 | 2008-08-27 | Light concentration type full glass solar heat collection pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101344330A true CN101344330A (en) | 2009-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101962770A Pending CN101344330A (en) | 2008-08-27 | 2008-08-27 | Light concentration type full glass solar heat collection pipe |
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| CN (1) | CN101344330A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157257A (en) * | 2015-09-28 | 2015-12-16 | 中国科学技术大学 | Slot type light gathering type solar vacuum heat collecting pipe |
| CN111207517A (en) * | 2018-11-22 | 2020-05-29 | 王建 | Novel solar heating glass tube |
-
2008
- 2008-08-27 CN CNA2008101962770A patent/CN101344330A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157257A (en) * | 2015-09-28 | 2015-12-16 | 中国科学技术大学 | Slot type light gathering type solar vacuum heat collecting pipe |
| CN111207517A (en) * | 2018-11-22 | 2020-05-29 | 王建 | Novel solar heating glass tube |
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Open date: 20090114 |