CN101762097B - Plug-in combination type glass evacuated heat collecting and accumulating tube with built-in dark color absorber plates and condenser lenses - Google Patents
Plug-in combination type glass evacuated heat collecting and accumulating tube with built-in dark color absorber plates and condenser lenses Download PDFInfo
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- CN101762097B CN101762097B CN2009103028027A CN200910302802A CN101762097B CN 101762097 B CN101762097 B CN 101762097B CN 2009103028027 A CN2009103028027 A CN 2009103028027A CN 200910302802 A CN200910302802 A CN 200910302802A CN 101762097 B CN101762097 B CN 101762097B
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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
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Abstract
A plug-in combination type glass evacuated heat collecting and accumulating tube with built-in dark color absorber plates and condenser lenses is characterized in that one end of each inner heat collecting and accumulating section glass tube is sealed by glass; the dark color absorber plates are mounted in the glass evacuated collector and accumulator tube; heat release section tubes are in seal connection with the inner heat collecting and accumulating section glass tubes through plug-in and sleeving of seal rings; the heat release section tubes are provided with a filling nozzle which is provided with corresponding seal caps; the inner heat collecting and accumulating section glass tubes are sleeved in outer glass cover tubes provided with an exhaust nozzle at the tails by support elastic clips with getters; vacuum jackets of the outer glass cover tubes and the inner heat collecting and accumulating section glass tubes are provided with built-in reflecting condenser lenses; the mouths of the outer glass cover tubes are welded with the glass on the inner heat collecting and accumulating section glass tubes in a ring manner; inner glass tubes corresponding to the outer glass cover tubes are used as the heat collecting and accumulating section; tubes outside the outer glass cover tubes are used as the heat release section; and the liquid collecting and accumulating heat transfer media are filled through the filling nozzle. By directly heating the liquid collecting and accumulating heat transfer media after the absorber plates absorb heat, the glass evacuated heat collecting and accumulating tube improves the heat efficiency and has the function of heat accumulation.
Description
Technical field
The present invention relates to the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate and condenser, belong to the Application of Solar Energy field.
Background technology
Existing pair of vacuum all-glass vacuum thermal-collecting tube, due to the heat absorption rete, on the top of heat pipe endothermic tube, and therefore the phase-change heat transfer medium refluxed is indirect heat transfer in the bottom of heat pipe endothermic tube.Because the glass heat conductivility is general, the collecting efficiency of the two vacuum all-glass vacuum thermal-collecting tubes that make is not high, does not more possess heat accumulation function.
Summary of the invention
In order to overcome the above problems, invented the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate and condenser, it after can absorbing heat by absorber plate directly heating liquid harvest heat transfer medium, improve its thermal efficiency, and possess heat accumulation function, coordinate other technology to increase substantially the collecting efficiency of glass vacuum heat collector/accumulator tube.
The technical solution adopted for the present invention to solve the technical problems is: the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate and condenser, comprise outer glass enclosure tube, inside harvest the hot arc glass tube, mirror condenser, dark color absorber plates, the heat release section pipe, support the bullet card, getter, exhaust nozzle, liquid harvests heat transfer medium, liquid harvests the heat transfer medium filling nozzle, sealing cap, inside harvest the one end glass sealing of hot arc glass tube, dark color absorber plates is arranged in glass vacuum heat collector/accumulator tube, dark color absorber plates is installed on the inwall of glass vacuum heat collector/accumulator tube by self resiliency supported, the heat release section pipe with in harvest the hot arc glass tube and peg graft to be set with by sealing ring and be tightly connected, the heat release section pipe with in harvest hot arc glass tube plug-in mounting linkage section root be provided with stopping means, or in harvest hot arc glass tube inwall and heat release section pipe plug-in mounting section root be provided with stopping means, or sealing ring contacts root with the mouth of pipe of heat release section pipe and is provided with stopping means, the heat release section pipe is provided with liquid and harvests the heat transfer medium filling nozzle, filling nozzle is provided with the sealing cap corresponding with filling nozzle, inside harvesting the hot arc glass tube is loaded in the outer glass enclosure tube that afterbody is provided with exhaust nozzle by the support bullet cutting ferrule with getter, outer glass enclosure tube with in harvest in the vacuum interlayer of hot arc glass tube and be provided with the built-in reflective condenser, the built-in reflective condenser is located on the diameter of outer glass enclosure tube inwall, the mouth of pipe of outer glass enclosure tube with in harvest hot arc glass tube glass ring-shaped welding, internally glass sealing exhaust nozzle after the outer glass pipe interlayer vacuum-pumping, evaporate getter, inner glass tube corresponding to outer glass enclosure tube is for harvesting hot arc, and the outer pipe of outer glass enclosure tube is heat release section, harvest the filled liquid of heat transfer medium filling nozzle by liquid and harvest heat transfer medium, liquid harvests the corresponding glass vacuum heat collector/accumulator tube operating temperature of heat transfer medium, select the liquid corresponding with the heat accumulation pipe service behaviour to harvest heat transfer medium, and leave corresponding liquid harvest the heat transfer medium expansion space in glass vacuum heat collector/accumulator tube, sealing liquid harvests the heat transfer medium filling nozzle.
The plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate and condenser, it harvests hot arc is pressure limiting glass tube end socket, pressure limiting glass tube end socket or be plane.
The plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate and condenser, harvest outer surface or process chemical attack emulsification treatment within the hot arc glass tube in it; The outer glass enclosure tube of glass vacuum heat collector/accumulator tube is the low-reflection glass pipe.
The plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate and condenser, harvest hot arc glass tube shady face outer tube wall in it and be provided with reflective mirror, or the inner tubal wall of outer glass enclosure tube shady face is provided with reflective mirror, or the outer tube wall of outer glass enclosure tube shady face is provided with reflective mirror, or in harvest on hot arc glass tube shady face outer tube wall, be equipped with reflective mirror on the inner tubal wall of outer glass enclosure tube shady face, or in harvest on hot arc glass tube shady face outer tube wall, be equipped with reflective mirror on the inside and outside tube wall of outer glass enclosure tube shady face.
The plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate and condenser, harvesting the hot arc glass tube in it is pipe, or for cross sectional shape be that surface is recessed, the glass tube of dome-shaped groove tube wall that inner face is protruding.
The plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate and condenser, the termination of its heat release section pipe is provided with sucker.
The plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate and condenser, its glass vacuum heat collector/accumulator tube is provided with conducting liquid and harvests the electrode that heat transfer medium is electrically connected to, electrode is derived by sealing ring, electrode is connected with the negative pole of dc source, and the positive pole of dc source is electrically connected to the earth.
Harvest hot arc glass tube afterbody in the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate and condenser and be provided with the heat insulation glass tube head.
The plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate and condenser, its heat release section pipe is glass tube, metal tube, the heat release section pipe of glass vacuum heat collector/accumulator tube is provided with liquid and harvests the heat transfer medium filling nozzle, after the glass vacuum heat collector/accumulator tube application of vacuum, sealing liquid harvests the heat transfer medium filling nozzle; The heat release section pipe of the glass vacuum heat collector/accumulator tube of build-in dark absorber plate at least is comprised of a heat-dissipating cavity, forms large radiating surface; Glass vacuum heat collector/accumulator tube heat release section or at least two tube chambers are set with one heart, termination is welded to each other and forms the closed cavity that cross section is concentric ring; The glass vacuum heat collector/accumulator tube heat release section or be the tube chamber welded and installed of at least two ends sealings on a tube chamber, form with one and manage at least two radiating tube cavitys that are connected; The glass vacuum heat collector/accumulator tube heat release section or be at least one inverted U-shaped tube chamber welded and installed on same tube chamber, form with one and manage at least two radiating tube cavitys that are connected; Glass vacuum heat collector/accumulator tube heat release section or at least comprise two petal chambeies for cross section, with smooth excessive a connection of tube chamber, Formation cross-section at least comprises a plurality of radiating tube cavitys that two petal chambeies are connected with a pipe; On glass vacuum heat collector/accumulator tube heat release section radiating tube or be compounded with radiating fin.
The invention has the beneficial effects as follows: the plug-in combined glass vacuum heat collection and storage tube of a kind of build-in dark absorber plate and condenser, it after can absorbing heat by absorber plate directly heating liquid harvest heat transfer medium, improve its thermal efficiency, and possess heat accumulation function, join the collecting efficiency that increases substantially glass vacuum heat collector/accumulator tube with other technology.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is the structural representation of the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate of the present invention and condenser;
Fig. 2 is that mirror condenser of the present invention is arcuate structure, and Fig. 2 is the cross section view of Fig. 1;
Fig. 3 is that mirror condenser of the present invention is W shape structure, and Fig. 3 is the cross section view of Fig. 1;
Fig. 2 is the cross section view of Fig. 1;
Fig. 3 be build-in dark absorber plate and condenser plug-in combined glass vacuum heat collection and storage tube in harvest hot glass tube cross section be shaped as that surface is recessed, the glass tube of dome-shaped groove tube wall that inner face is protruding, Fig. 3 is the cross section view of Fig. 1;
Fig. 4 be the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate of the present invention and condenser with the insulation tube head, be packaged with to fill and hold pipe and establish suctorial structural representation;
Fig. 5 is that mirror condenser of the present invention is arcuate structure, and Fig. 5 is the cross section view of Fig. 4;
Fig. 6 is that mirror condenser of the present invention is W shape structure, and Fig. 6 is the cross section view of Fig. 4.
Fig. 7 is the structural representation that the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate of the present invention and condenser is provided with stopping means;
Fig. 8 be the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate of the present invention and condenser with being incubated tube head, be provided with the structural representation of sucker and stopping means.
In figure: harvest hot arc glass tube, 8 dark color absorber plates, 9 in 1 sealing cap, 2 filling nozzles, 3 heat release section pipes, 4 outer glass enclosure tube, 5 vacuum interlayers, 6 exhaust nozzles, 7 and support bullet cards, 10 getters, 11 sleeve pipes, 12 mirror condensers, 13 sealing rings, 14 liquid and harvest heat transfer medium, 15 suckers, 16 pressure limiting glass tube end sockets, 17 heat insulation glass tube heads, 18 stopping means
As Fig. 1, shown in Fig. 2: the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate and condenser, comprise outer glass enclosure tube 4, inside harvest hot arc glass tube 7, heat release section pipe 3, support bullet card 9, getter 10, exhaust nozzle 6, dark color absorber plates 8, filling nozzle 2, sealing cap 1, inside harvest the 7 one end glass sealings of hot arc glass tube, dark color absorber plates 8 is arranged in glass vacuum heat collector/accumulator tube, heat release section pipe 3 with in harvest hot arc glass tube 7 and be tightly connected by sealing ring 13 suit of pegging graft, heat release section pipe 3 is provided with liquid and harvests heat transfer medium filling nozzle 2, inside harvest hot arc glass tube 7 by the support bullet card 9 with getter 10, be set in the outer glass enclosure tube 4 that afterbody is provided with exhaust nozzle 11, outer glass enclosure tube 4 with in harvest in the vacuum interlayer 5 of hot arc glass tube 7 and be provided with arc reflection condenser 12, the mouth of pipe of outer glass enclosure tube 4 with in harvest the 7 glass ring-shaped welding of hot arc glass tube, externally glass enclosure tube 4 with in harvest glass sealing exhaust nozzle after the interlayer vacuum-pumping of hot arc glass tube 7, evaporation getter 10, the inner glass tube of outer glass enclosure tube 4 correspondences is for harvesting hot arc, and outer glass enclosure tube 4 is outer, and to be provided with the glass tube that liquid harvests the heat transfer medium filling nozzle be heat release section, the liquid of glass vacuum heat collector/accumulator tube harvests heat transfer medium filling nozzle 2 and is located on the heat release section pipe end, filling nozzle 2 is provided with the sealing cap corresponding with filling nozzle 1, harvest heat transfer medium filling nozzle 2 filled with deep colour liquid by liquid and harvest heat transfer medium 8, leave corresponding liquid and harvest the heat transfer medium expansion space in glass vacuum heat collector/accumulator tube, sealing liquid harvests heat transfer medium filling nozzle 2.
As shown in Figure 1, Figure 3: outer glass enclosure tube 4 with in harvest in the vacuum interlayer 5 of hot arc glass tube 7 and be provided with W shape mirror condenser 12, other is equal to Fig. 1, Fig. 2.
As shown in Figure 4, Figure 5: inside harvest hot arc glass tube 7 and be provided with pressure limiting glass tube end socket 16, insulation tube head 17, inside harvest the glass tube that is shaped as the dome-shaped groove tube wall that surface is recessed, inner face is protruding in hot glass tube 7 cross sections, the termination of heat release section pipe 3 is provided with sucker 15, the plug-in mounting section root that inside harvests hot arc glass tube 7 inwalls and heat release section pipe 9 is provided with stopping means 18, and other is equal to Fig. 1.
As shown in Fig. 4, Fig. 6: outer glass enclosure tube 4 with in harvest in the vacuum interlayer 5 of hot arc glass tube 7 and be provided with W shape mirror condenser 12, other is equal to Fig. 4, Fig. 5.
As shown in Figure 7: sealing ring 13 contacts root with the mouth of pipe of heat release section pipe 3 and is provided with stopping means 18, and other is equal to Fig. 1.
As shown in Figure 8: sealing ring 13 contacts root with the mouth of pipe of heat release section pipe 3 and is provided with stopping means 18, and the termination of glass vacuum heat collector/accumulator tube heat release section pipe 3 is provided with sucker 15, and other is equal to Fig. 2.
Claims (2)
1. the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate and mirror condenser, comprise outer glass enclosure tube, in harvest hot arc glass tube, mirror condenser, dark color absorber plates, heat release section pipe, support the bullet card, getter, exhaust nozzle, liquid harvest heat transfer medium, liquid harvests heat transfer medium filling nozzle, sealing cap, it is characterized in that: inside harvest the one end glass sealing of hot arc glass tube, dark color absorber plates harvests on the inwall of hot arc glass tube in being installed on by self resiliency supported, the heat release section pipe with in harvest the hot arc glass tube and peg graft to be set with by sealing ring and be tightly connected, the outer tube wall of heat release section pipe with in harvest hot arc glass tube plug-in mounting linkage section root be provided with stopping means, or in harvest hot arc glass tube inwall and heat release section pipe plug-in mounting section root be provided with stopping means, or sealing ring contacts root with the mouth of pipe of heat release section pipe and is provided with stopping means, the heat release section pipe is provided with liquid and harvests the heat transfer medium filling nozzle, filling nozzle is provided with the sealing cap corresponding with filling nozzle, inside harvesting the hot arc glass tube is loaded in the outer glass enclosure tube that afterbody is provided with exhaust nozzle by the support bullet cutting ferrule with getter, outer glass enclosure tube with in harvest in the vacuum interlayer of hot arc glass tube and be provided with mirror condenser, mirror condenser is located on the diameter of outer glass enclosure tube inwall, the mouth of pipe of outer glass enclosure tube with in harvest hot arc glass tube glass ring-shaped welding, externally glass enclosure tube and in harvest glass sealing exhaust nozzle after the interlayer vacuum-pumping of hot arc glass tube, the evaporation getter, inner glass tube corresponding to outer glass enclosure tube is for harvesting hot arc, and the outer pipe of outer glass enclosure tube is heat release section, harvest the filled liquid of heat transfer medium filling nozzle by liquid and harvest heat transfer medium, liquid harvests the corresponding glass vacuum heat collector/accumulator tube operating temperature of heat transfer medium, select the liquid corresponding with the glass vacuum heat collector/accumulator tube service behaviour to harvest heat transfer medium, and leave corresponding liquid harvest the heat transfer medium expansion space in glass vacuum heat collector/accumulator tube, sealing liquid harvests the heat transfer medium filling nozzle.
2. the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate according to claim 1 and mirror condenser, it is characterized in that: the hot arc that harvests of glass vacuum heat collector/accumulator tube is pressure limiting glass tube end socket, and pressure limiting glass tube end socket is plane.
3. the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate according to claim 1 and mirror condenser, is characterized in that: harvest outer surface process chemical attack emulsification treatment within the hot arc glass tube in glass vacuum heat collector/accumulator tube.
4. the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate according to claim 1 and mirror condenser, it is characterized in that: harvest hot arc glass tube shady face outer tube wall in glass vacuum heat collector/accumulator tube and be provided with reflective mirror, or the inner tubal wall of outer glass enclosure tube shady face is provided with reflective mirror, or the outer tube wall of outer glass enclosure tube shady face is provided with reflective mirror, or in harvest on hot arc glass tube shady face outer tube wall and the inner tubal wall of outer glass enclosure tube shady face on be equipped with reflective mirror, or in harvest on hot arc glass tube shady face outer tube wall, be equipped with reflective mirror on the inner tubal wall of outer glass enclosure tube shady face and outer tube wall.
5. the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate according to claim 1 and mirror condenser, it is characterized in that: inside harvesting the hot arc glass tube is pipe, or for cross sectional shape be that surface is recessed, the glass tube of dome-shaped groove tube wall that inner face is protruding.
6. the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate according to claim 1 and mirror condenser, it is characterized in that: the outer glass enclosure tube of glass vacuum heat collector/accumulator tube is the low-reflection glass pipe.
7. the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate according to claim 1 and mirror condenser, it is characterized in that: the termination of glass vacuum heat collector/accumulator tube heat release section pipe is provided with sucker.
8. the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate according to claim 1 and mirror condenser, it is characterized in that: glass vacuum heat collector/accumulator tube is provided with conducting liquid and harvests the electrode that heat transfer medium is electrically connected to, electrode is derived by sealing ring, electrode is connected with the negative pole of dc source, and the positive pole of dc source is electrically connected to the earth.
9. the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate according to claim 1 and mirror condenser, is characterized in that: harvest hot arc glass tube afterbody in glass vacuum heat collector/accumulator tube and be provided with the heat insulation glass tube head.
10. the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate according to claim 1 and mirror condenser, it is characterized in that: the heat release section pipe of glass vacuum heat collector/accumulator tube is glass tube or metal tube, the heat release section pipe of glass vacuum heat collector/accumulator tube is provided with liquid and harvests the heat transfer medium filling nozzle, after the glass vacuum heat collector/accumulator tube application of vacuum, sealing liquid harvests the heat transfer medium filling nozzle; The heat release section pipe of the glass vacuum heat collector/accumulator tube of build-in dark absorber plate at least is comprised of a heat-dissipating cavity, forms large radiating surface; Be compounded with radiating fin on the heat release section pipe.
11. the plug-in combined glass vacuum heat collection and storage tube of build-in dark absorber plate according to claim 10 and mirror condenser, it is characterized in that: the heat release section pipe is set with one heart at least two tube chambers, and termination is welded to each other and forms the closed cavity that cross section is concentric ring; Or the tube chamber welded and installed that the heat release section pipe is at least two end sealings forms at least two radiating tube cavitys that are connected with a tube chamber on a tube chamber; Or the heat release section pipe be at least one inverted U-shaped tube chamber welded and installed on same tube chamber, form at least two radiating tube cavitys being connected with a tube chamber; Or the heat release section pipe is that cross section at least comprises two petal chambeies, with the smooth transition of a tube chamber, be connected, Formation cross-section at least comprises a plurality of radiating tube cavitys that two petal chambeies are connected with a tube chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103028027A CN101762097B (en) | 2008-11-10 | 2009-05-31 | Plug-in combination type glass evacuated heat collecting and accumulating tube with built-in dark color absorber plates and condenser lenses |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810305439.X | 2008-11-10 | ||
| CN200810305439 | 2008-11-10 | ||
| CN2009103028027A CN101762097B (en) | 2008-11-10 | 2009-05-31 | Plug-in combination type glass evacuated heat collecting and accumulating tube with built-in dark color absorber plates and condenser lenses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101762097A CN101762097A (en) | 2010-06-30 |
| CN101762097B true CN101762097B (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103028027A Expired - Fee Related CN101762097B (en) | 2008-11-10 | 2009-05-31 | Plug-in combination type glass evacuated heat collecting and accumulating tube with built-in dark color absorber plates and condenser lenses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101762097B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4067315A (en) * | 1975-10-24 | 1978-01-10 | Corning Glass Works | Solar heat pipe |
| US4153041A (en) * | 1976-04-30 | 1979-05-08 | Thomson-Brandt | Solar energy collector |
| CN1831448A (en) * | 2005-03-10 | 2006-09-13 | 徐宝安 | Glass solar conversion heat collecting pipe with reflection collecting mirror and circulation-aid device |
| CN101122421A (en) * | 2007-07-23 | 2008-02-13 | 高本兰 | Solar energy water heater and solar energy hot water unit |
-
2009
- 2009-05-31 CN CN2009103028027A patent/CN101762097B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4067315A (en) * | 1975-10-24 | 1978-01-10 | Corning Glass Works | Solar heat pipe |
| US4153041A (en) * | 1976-04-30 | 1979-05-08 | Thomson-Brandt | Solar energy collector |
| CN1831448A (en) * | 2005-03-10 | 2006-09-13 | 徐宝安 | Glass solar conversion heat collecting pipe with reflection collecting mirror and circulation-aid device |
| CN101122421A (en) * | 2007-07-23 | 2008-02-13 | 高本兰 | Solar energy water heater and solar energy hot water unit |
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| Publication number | Publication date |
|---|---|
| CN101762097A (en) | 2010-06-30 |
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