CN101598395A - A kind of all-glass evacuated rectangular planar collector tube - Google Patents
A kind of all-glass evacuated rectangular planar collector tube Download PDFInfo
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- CN101598395A CN101598395A CNA2008103019095A CN200810301909A CN101598395A CN 101598395 A CN101598395 A CN 101598395A CN A2008103019095 A CNA2008103019095 A CN A2008103019095A CN 200810301909 A CN200810301909 A CN 200810301909A CN 101598395 A CN101598395 A CN 101598395A
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- glass
- tube
- pipe
- rectangular
- head
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
- F24S40/40—Preventing corrosion; Protecting against dirt or contamination
- F24S40/46—Maintaining vacuum, e.g. by using getters
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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
All-glass evacuated rectangular planar collector tube comprises cover glass pipe, rectangle plane heat collecting glass tube, getter support fixation bullet card, exhaust nozzle.The parent tube of the rectangle plane heat collecting glass tube of all-glass evacuated rectangular planar collector tube is the glass rectangular tube, and glass rectangular tube two ends tube head is processed into the glass round tube head, makes the glass rectangular tube of ground both ends open, on its outer wall surface, and compound heat absorption rete.Burning that cover glass pipe two ends tube head is flush mouth, the cover glass mouth of pipe and rectangle plane heat collection glass pipe mouth, annular undergauge pressing glass welding sealing by fusing, making reducing of the cover glass mouth of pipe and rectangle plane heat collection glass pipe mouth sealing by fusing is one, form single-glass pipe mouth, after internally the outer glass pipe interlayer vacuumizes, the glass sealing exhaust nozzle, the evaporation getter is made all-glass evacuated rectangular planar collector tube.This pipe heat absorption efficiency height, long service life can be utilized scattered light.
Description
Technical field
The present invention relates to a kind of solar collector pipe, especially a kind of high-efficiency full-glass vacuum rectangle plane thermal-collecting tube belongs to the Application of Solar Energy field.
Background technology
At present, known all-glass evacuated solar collector tube is a circle thermal-collecting tube structure in the cylindrical vestlet suit, and this structure heat radiation heat radiation is serious, and heat-insulating property is poor, and has stopped being shining into of scattered light.
In order to address the above problem, invented a kind of all-glass evacuated rectangular planar collector tube, the present invention is the heat absorption efficiency height not only, good heat insulating, but also can reduce heat radiation, utilize scattered light, and reduced production cost.
The technical solution adopted for the present invention to solve the technical problems is: a kind of all-glass evacuated rectangular planar collector tube comprises cover glass pipe, rectangle plane heat collecting glass tube, supports bullet card, getter, exhaust nozzle.The parent tube of the rectangle plane heat collecting glass tube of all-glass evacuated rectangular planar collector tube is the glass rectangular tube, and the heating of glass rectangular tube one end tube head is moulded and is processed into the glass round tube head, to glass round tube flush, a burning mouth; Glass round tube head or expand into and glass rectangular tube concentric, isodiametric glass round tube head; Or glass rectangle tube head is moulded the glass round tube head that is processed into glass rectangular tube concentric; Glass rectangular tube one end tube head is transferred circle, flush, burn mouth, the clinkering of glass rectangular tube other end tube head glass is sealed and is made ground one end opening, the glass rectangular tube of one end sealing, or glass rectangular tube other end tube head, heating is earlier moulded processing and is expanded into and glass rectangular tube concentric, isodiametric glass round tube head, the glass round tube head is sealed in the glass clinkering, be processed into ground one end opening, the glass rectangular tube of one end sealing, on the surface of its plane outer wall, the compound heat absorption rete in one or both sides is made the rectangle plane heat collecting glass tube, burning that cover glass Guan Yiduan tube head is flush mouth, the clinkering of cover glass pipe other end tube head glass is sealed, on the glass tube head that seals, glass welding exhaust nozzle tail pipe, the support bullet card that has getter is installed in the cover glass pipe, then the rectangle plane heat collecting glass tube is sleeved in the cover glass pipe, the cover glass mouth of pipe, the interior heat collection glass mouth of pipe, ring glass welding sealing by fusing, after internally the outer glass pipe interlayer vacuumizes, the glass sealing exhaust nozzle, the evaporation getter is made all-glass evacuated rectangular planar collector tube.
A kind of all-glass evacuated rectangular planar collector tube, glass rectangular tube glass clinkering of heat collecting glass tube is sealed on the glass tube end socket of formation in it, the connection of suit symmetry is compounded with the excessive short glass tube end socket that formation is sealed in the clinkering of pipe glass, makes glass rectangular tube end socket one end become the pipe head.
A kind of all-glass evacuated rectangular planar collector tube, the glass rectangular tube of heat collecting glass tube in it burns mouth, the end socket surface of the glass round tube head that the clinkering of other end glass is sealed with an end, concentric glass head seal annular solder is made the rectangle plane heat collecting glass tube that tail end has one section blank pipe head.
A kind of all-glass evacuated rectangular planar collector tube, its glass rectangle tube head heating is moulded processing and is expanded into and glass rectangular tube concentric, isodiametric glass round tube head, flush, burning mouth; With glass rectangular tube concentric, equal diameter, an end glass tube clinkering is sealed, and the other end burns glass round tube sealing-in mouth one end of mouth, and the rectangle plane heat collecting glass tube that tail end has one section blank pipe head is made in the glass ring-shaped welding.
A kind of all-glass evacuated rectangular planar collector tube, the inner surface of its glass rectangular tube plane tube wall is inwardly protruded cambered surface.
A kind of interior heat collection glass tube-surface of all-glass evacuated rectangular planar collector tube or process chemical attack emulsification treatment.
A kind of cover glass pipe of all-glass evacuated rectangular planar collector tube or be ultrawhite low-reflection glass pipe.
On a kind of inside and outside surface of cover glass pipe of all-glass evacuated rectangular planar collector tube, vertically be compounded with less than, equal the reflective mirror of cover glass pipe one semicanal face; Or on the outer surface of a side pipe wall of rectangle plane heat collecting glass tube, vertically be compounded with reflective mirror; Or on the inside and outside surface of cover glass pipe of all-glass evacuated rectangular planar collector tube, vertically be compounded with less than, equal the reflective mirror of cover glass pipe one semicanal face, on the outer surface of a side pipe wall of rectangle plane heat collecting glass tube, also vertically be compounded with reflective mirror.
On a kind of tube wall of all-glass evacuated rectangular planar collector tube cover glass pipe, be provided with Fresnel Lenses, convex lens, Fresnel Lenses, convex lens vertically are located at strip Fresnel Lenses, the convex lens cover glass tube wall of the vertical layout on the both sides cover glass pipe circular arc tube wall between cover glass pipe diameter and the parallel chords.
The invention has the beneficial effects as follows: the heat absorption efficiency height, long service life can reduce heat radiation, can utilize scattered light, and production cost is low.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples:
Fig. 1 is the unitary side cutaway view of a kind of first embodiment of all-glass evacuated rectangular planar collector tube of the present invention;
Fig. 2 is the sectional elevation of Fig. 1.
Fig. 3 is that first embodiment of a kind of all-glass evacuated rectangular planar collector tube of the present invention revolves the unitary side cutaway view that turn 90 degrees;
Fig. 4 is the unitary side cutaway view of second embodiment of a kind of all-glass evacuated rectangular planar collector tube of the present invention;
Fig. 5 is the sectional elevation of Fig. 4.
Fig. 6 is the unitary side cutaway view of the 3rd embodiment of a kind of all-glass evacuated rectangular planar collector tube of the present invention;
Fig. 7 is the sectional elevation of Fig. 6.
Fig. 8 is that the 3rd embodiment of a kind of all-glass evacuated rectangular planar collector tube of the present invention revolves the unitary side cutaway view that turn 90 degrees;
Fig. 9 is the unitary side cutaway view of the 4th embodiment of a kind of all-glass evacuated rectangular planar collector tube of the present invention;
Figure 10 is the sectional elevation of Fig. 9.
Figure 11 is the unitary side cutaway view of the 5th embodiment of a kind of all-glass evacuated rectangular planar collector tube of the present invention;
Figure 12 is the sectional elevation of Figure 11.
Figure 13 is the unitary side cutaway view of the 6th embodiment of a kind of all-glass evacuated rectangular planar collector tube of the present invention;
Figure 14 is the sectional elevation of Figure 13.
Figure 15 is the unitary side cutaway view of the 7th embodiment of a kind of all-glass evacuated rectangular planar collector tube of the present invention;
Figure 16 is the sectional elevation of Figure 15.
Figure 17 is the unitary side cutaway view of the 8th embodiment of a kind of all-glass evacuated rectangular planar collector tube of the present invention;
Figure 18 is the sectional elevation of Figure 17.
Figure 19 is the unitary side cutaway view of the 9th embodiment of a kind of all-glass evacuated rectangular planar collector tube of the present invention;
Figure 20 is the sectional elevation of Figure 19.
Figure 21 is the unitary side cutaway view of the tenth embodiment of a kind of all-glass evacuated rectangular planar collector tube of the present invention;
Figure 22 is the sectional elevation of Figure 21.
Among the figure: the 1 rectangle plane heat collection glass mouth of pipe, 2 cover glass pipes, 3 rectangle plane glass tubes, 4 vacuum heat-preserving interlayers, 5 rectangle plane glass tube end sockets, 6 getters, 7 exhaust nozzles, 8 support bullet card, 9 absorption films, 10 low tail consumption tube heads, 11 mirror surfaces.
The specific embodiment
As shown in Figure 1, 2, 3: a kind of rectangle plane heat collection glass mouth of pipe 1 of all-glass evacuated rectangular planar collector tube is that glass rectangular tube 3 expands into and glass rectangular tube concentric, isodiametric glass round tube mouth.The other end tube head of glass rectangular tube 3, heating is earlier moulded processing and is expanded into and glass rectangular tube concentric, isodiametric glass round tube head, the glass clinkering is sealed and is made glass round tube 5, be processed into the glass rectangular tube of ground one end opening, end sealing, on the surface of its plane outer wall, the compound heat absorption rete of a side is made the rectangle plane heat collecting glass tube.
Shown in Fig. 4,5: on the tube wall of cover glass pipe 2, be provided with a pair of Fresnel Lenses, other is equal to Fig. 1, Fig. 2, Fig. 3.
Shown in Fig. 6,7,8: a kind of rectangle plane heat collection glass mouth of pipe 1 of all-glass evacuated rectangular planar collector tube is that glass rectangular tube 3 expands into the glass round tube mouth with glass rectangular tube concentric.The other end tube head of glass rectangular tube 3, the glass clinkering is sealed, and the low tail consumption of cover glaze tube head 10 is processed into the glass rectangular tube of ground one end opening, end sealing on the glass round tube head, on the surface of its plane outer wall, the compound heat absorption rete of a side is made the rectangle plane heat collecting glass tube.
Shown in Fig. 9,10: a kind of rectangle plane heat collection glass mouth of pipe 1 of all-glass evacuated rectangular planar collector tube is that glass rectangular tube 3 expands into the glass round tube mouth with glass rectangular tube concentric.The other end tube head of glass rectangular tube 3, the glass clinkering is sealed, and at the low tail consumption of glass round tube upper glass clinkering tube head 10, is processed into the glass rectangular tube of ground one end opening, end sealing, on the surface of its plane outer wall, the compound heat absorption rete of a side is made the rectangle plane heat collecting glass tube.
Shown in Figure 11,12: a kind of rectangle plane heat collection glass mouth of pipe 1 of all-glass evacuated rectangular planar collector tube is that glass rectangular tube 3 expands into and glass rectangular tube concentric, isodiametric glass round tube mouth.The other end tube head of glass rectangular tube 3, heating is earlier moulded processing and is expanded into and glass rectangular tube concentric, isodiametric glass round tube head, the glass clinkering is sealed and is made glass round tube 5, be processed into the glass rectangular tube of ground one end opening, end sealing, on the surface of its plane outer wall, one side plane is compounded with the heat absorption rete, opposite side is compounded with mirror surface, makes the rectangle plane heat collecting glass tube.
Shown in Figure 13,14: a kind of rectangle plane heat collection glass mouth of pipe 1 of all-glass evacuated rectangular planar collector tube is that glass rectangular tube 3 expands into and glass rectangular tube concentric, isodiametric glass round tube mouth.The other end tube head of glass rectangular tube 3, heating is earlier moulded processing and is expanded into and glass rectangular tube concentric, isodiametric glass round tube head, the glass clinkering is sealed and is made glass round tube 5, be processed into the glass rectangular tube of ground one end opening, end sealing, on the surface of its plane outer wall, one side plane is compounded with the heat absorption rete, opposite side is compounded with mirror surface, is compounded with mirror surface on the inner surface of cover glass pipe 2, makes the rectangle plane heat collecting glass tube.
Shown in Figure 15,16: a kind of rectangle plane heat collection glass mouth of pipe 1 of all-glass evacuated rectangular planar collector tube is that glass rectangular tube 3 expands into and glass rectangular tube concentric, isodiametric glass round tube mouth.The other end tube head of glass rectangular tube 3, heating is earlier moulded processing and is expanded into and glass rectangular tube concentric, isodiametric glass round tube head, at the low tail consumption of glass round tube upper glass clinkering tube head 10, be processed into the glass rectangular tube of ground one end opening, end sealing, on the surface of its plane outer wall, the compound heat absorption rete of a side is made the rectangle plane heat collecting glass tube.The tube wall of cover glass pipe 2 is provided with the strip Fresnel Lenses of vertical layout, is compounded with mirror surface on the outer surface of cover glass pipe 2.
Shown in Figure 17,18: a kind of rectangle plane heat collection glass mouth of pipe 1 of all-glass evacuated rectangular planar collector tube is that glass rectangular tube 3 expands into the glass round tube mouth with glass rectangular tube concentric.The other end tube head of glass rectangular tube 3, the glass clinkering is sealed, at the low tail consumption of glass round tube upper glass clinkering tube head 10, be processed into the glass rectangular tube of ground one end opening, end sealing, on the surface of its plane outer wall, the compound heat absorption rete of a side, opposite side are compounded with mirror surface, are compounded with mirror surface on the inner surface of cover glass pipe 2, the tube wall of cover glass pipe 2 is provided with the strip convex lens of vertical layout, makes the rectangle plane heat collecting glass tube.
Shown in Figure 19,20: a kind of rectangle plane heat collection glass mouth of pipe 1 of all-glass evacuated rectangular planar collector tube is that glass rectangular tube 3 expands into the glass round tube mouth with glass rectangular tube concentric.The other end tube head of glass rectangular tube 3, the glass clinkering is sealed, and the low tail consumption of cover glaze tube head 10 is processed into the glass rectangular tube of ground one end opening, end sealing on the glass round tube head, on the surface of its plane outer wall, the compound heat absorption rete of a side is made the rectangle plane heat collecting glass tube.The inside and outside tube wall of cover glass pipe 2 is provided with mirror surface.
Shown in Figure 21,22: a kind of rectangle plane heat collection glass mouth of pipe 1 of all-glass evacuated rectangular planar collector tube is that glass rectangular tube 3 expands into the glass round tube mouth with glass rectangular tube concentric.The other end tube head of glass rectangular tube 3, the glass clinkering is sealed, at the low tail consumption of glass round tube upper glass clinkering tube head 10, be processed into the glass rectangular tube of ground one end opening, end sealing, on the surface of its plane outer wall, the compound heat absorption rete of one side, opposite side are compounded with mirror surface, make the rectangle plane heat collecting glass tube.The inside and outside tube wall of cover glass pipe 2 is provided with mirror surface.
Claims (9)
1. all-glass evacuated rectangular planar collector tube, comprise cover glass pipe, rectangle plane heat collecting glass tube, support bullet card, getter, exhaust nozzle, it is characterized in that: the parent tube of the rectangle plane heat collecting glass tube of all-glass evacuated rectangular planar collector tube is the glass rectangular tube, the heating of glass rectangular tube one end tube head is moulded and is processed into the glass round tube head, to glass round tube flush, a burning mouth; Glass round tube head or expand into and glass rectangular tube concentric, isodiametric glass round tube head; Or glass rectangle tube head is moulded the glass round tube head that is processed into glass rectangular tube concentric; Glass rectangular tube one end tube head is transferred circle, flush, burn mouth, the clinkering of glass rectangular tube other end tube head glass is sealed and is made ground one end opening, the glass rectangular tube of one end sealing, or glass rectangular tube other end tube head, heating is earlier moulded processing and is expanded into and glass rectangular tube concentric, isodiametric glass round tube head, the glass round tube head is sealed in the glass clinkering, be processed into ground one end opening, the glass rectangular tube of one end sealing, on the surface of its plane outer wall, the compound heat absorption rete in one or both sides is made the rectangle plane heat collecting glass tube, burning that cover glass Guan Yiduan tube head is flush mouth, the clinkering of cover glass pipe other end tube head glass is sealed, on the glass tube head that seals, glass welding exhaust nozzle tail pipe, the support bullet card that has getter is installed in the cover glass pipe, then the rectangle plane heat collecting glass tube is sleeved in the cover glass pipe, the cover glass mouth of pipe, the interior heat collection glass mouth of pipe, ring glass welding sealing by fusing, after internally the outer glass pipe interlayer vacuumizes, the glass sealing exhaust nozzle, the evaporation getter is made all-glass evacuated rectangular planar collector tube.
2. a kind of all-glass evacuated rectangular planar collector tube according to claim 1, it is characterized in that: the glass rectangular tube glass clinkering of interior heat collecting glass tube is sealed on the glass tube end socket of formation, the connection of suit symmetry is compounded with the excessive short glass tube end socket that formation is sealed in the clinkering of pipe glass, makes glass rectangular tube end socket one end become the pipe head.
3. a kind of all-glass evacuated rectangular planar collector tube according to claim 1, it is characterized in that: the glass rectangular tube of interior heat collecting glass tube, burn mouth with an end, the end socket surface of the glass round tube head that the clinkering of other end glass is sealed, concentric glass head seal annular solder is made the rectangle plane heat collecting glass tube that tail end has one section blank pipe head.
4. a kind of all-glass evacuated rectangular planar collector tube according to claim 1 is characterized in that: the heating of glass rectangle tube head is moulded processing and is expanded into and glass rectangular tube concentric, isodiametric glass round tube head, flush, burning mouth; With glass rectangular tube concentric, equal diameter, an end glass tube clinkering is sealed, and the other end burns glass round tube sealing-in mouth one end of mouth, and the rectangle plane heat collecting glass tube that tail end has one section blank pipe head is made in the glass ring-shaped welding.
5. a kind of all-glass evacuated rectangular planar collector tube according to claim 1 is characterized in that: the inner surface of glass rectangular tube plane tube wall is inwardly protruded cambered surface.
6. a kind of all-glass evacuated rectangular planar collector tube according to claim 1 is characterized in that: the interior heat collection glass tube-surface of all-glass evacuated rectangular planar collector tube or process chemical attack emulsification treatment.
7. a kind of all-glass evacuated rectangular planar collector tube according to claim 1 is characterized in that: the cover glass pipe of all-glass evacuated rectangular planar collector tube or for ultrawhite low-reflection glass pipe.
8. a kind of all-glass evacuated rectangular planar collector tube according to claim 1 is characterized in that: on the inside and outside surface of cover glass pipe of all-glass evacuated rectangular planar collector tube, vertically be compounded with less than, equal the reflective mirror of cover glass pipe one semicanal face; Or on the outer surface of a side pipe wall of rectangle plane heat collecting glass tube, vertically be compounded with reflective mirror; Or on the inside and outside surface of cover glass pipe of all-glass evacuated rectangular planar collector tube, vertically be compounded with less than, equal the reflective mirror of cover glass pipe one semicanal face, on the outer surface of a side pipe wall of rectangle plane heat collecting glass tube, also vertically be compounded with reflective mirror.
9. a kind of all-glass evacuated rectangular planar collector tube according to claim 1, it is characterized in that: on the tube wall of all-glass evacuated rectangular planar collector tube cover glass pipe, be provided with Fresnel Lenses, convex lens, Fresnel Lenses, convex lens vertically are located at strip Fresnel Lenses, the convex lens cover glass tube wall of the vertical layout on the both sides cover glass pipe circular arc tube wall between cover glass pipe diameter and the parallel chords.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103019095A CN101598395B (en) | 2008-06-02 | 2008-06-02 | All-glass evacuated rectangular planar collector tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103019095A CN101598395B (en) | 2008-06-02 | 2008-06-02 | All-glass evacuated rectangular planar collector tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101598395A true CN101598395A (en) | 2009-12-09 |
| CN101598395B CN101598395B (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008103019095A Expired - Fee Related CN101598395B (en) | 2008-06-02 | 2008-06-02 | All-glass evacuated rectangular planar collector tube |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3952724A (en) * | 1974-06-24 | 1976-04-27 | Owens-Illinois, Inc. | Solar energy converter |
| US4649903A (en) * | 1982-03-07 | 1987-03-17 | Nitto Kohki Co., Ltd. | Solar heat collector |
| WO1987003950A1 (en) * | 1985-12-23 | 1987-07-02 | The University Of Sydney | Evacuated solar collector tube |
| DE19821137B4 (en) * | 1998-05-12 | 2005-04-28 | Schott Ag | tube collector |
| CN2769777Y (en) * | 2004-10-26 | 2006-04-05 | 海宁市爱家伟业电器有限公司 | Solar water heater having thermal-collecting vacuum tube with light-focusing reflective layer |
| CN2833430Y (en) * | 2005-10-13 | 2006-11-01 | 王恒月 | Semi-circle light-focusing type full glass vacuum heat collection pipe |
| CN101008528A (en) * | 2007-01-22 | 2007-08-01 | 于学德 | Profiled inner pipe all-glass vacuum solar collector tube |
| CN201047681Y (en) * | 2007-07-16 | 2008-04-16 | 哈尔滨理工大学 | Solar water heater high-efficiency vacuum thermal-collecting tube |
-
2008
- 2008-06-02 CN CN2008103019095A patent/CN101598395B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3952724A (en) * | 1974-06-24 | 1976-04-27 | Owens-Illinois, Inc. | Solar energy converter |
| US4649903A (en) * | 1982-03-07 | 1987-03-17 | Nitto Kohki Co., Ltd. | Solar heat collector |
| WO1987003950A1 (en) * | 1985-12-23 | 1987-07-02 | The University Of Sydney | Evacuated solar collector tube |
| DE19821137B4 (en) * | 1998-05-12 | 2005-04-28 | Schott Ag | tube collector |
| CN2769777Y (en) * | 2004-10-26 | 2006-04-05 | 海宁市爱家伟业电器有限公司 | Solar water heater having thermal-collecting vacuum tube with light-focusing reflective layer |
| CN2833430Y (en) * | 2005-10-13 | 2006-11-01 | 王恒月 | Semi-circle light-focusing type full glass vacuum heat collection pipe |
| CN101008528A (en) * | 2007-01-22 | 2007-08-01 | 于学德 | Profiled inner pipe all-glass vacuum solar collector tube |
| CN201047681Y (en) * | 2007-07-16 | 2008-04-16 | 哈尔滨理工大学 | Solar water heater high-efficiency vacuum thermal-collecting tube |
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|---|---|
| CN101598395B (en) | 2012-12-05 |
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