CN102538255B - Heat tube type all-glass vacuum solar collector tube - Google Patents
Heat tube type all-glass vacuum solar collector tube Download PDFInfo
- Publication number
- CN102538255B CN102538255B CN201210014689.4A CN201210014689A CN102538255B CN 102538255 B CN102538255 B CN 102538255B CN 201210014689 A CN201210014689 A CN 201210014689A CN 102538255 B CN102538255 B CN 102538255B
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- glass
- heat
- tube
- vacuum
- heat pipe
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- 239000011521 glass Substances 0.000 title claims abstract description 116
- 238000009833 condensation Methods 0.000 claims abstract description 42
- 230000005494 condensation Effects 0.000 claims abstract description 42
- 238000012546 transfer Methods 0.000 claims abstract description 22
- 239000006059 cover glass Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 10
- 239000007791 liquid phase Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 4
- 238000007605 air drying Methods 0.000 description 3
- 230000008642 heat stress Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- GNBHRKFJIUUOQI-UHFFFAOYSA-N fluorescein Chemical compound O1C(=O)C2=CC=CC=C2C21C1=CC=C(O)C=C1OC1=CC(O)=CC=C21 GNBHRKFJIUUOQI-UHFFFAOYSA-N 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- 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 invention discloses a heat tube type all-glass vacuum solar collector tube which belongs to the field of solar energy utilization equipment and is formed by combining an all-glass vacuum solar collector tube (1) and an all-glass heat tube (2); the evaporation section (3) of the all-glass heat tube (2) is formed by an inner glass tube (9) in the all-glass evacuated solar collector tube (1), and the condensation section (4) of the all-glass heat tube (2) is formed by coaxially extending the inner glass tube (9) outwards from a ring seal cup opening (1) of the all-glass vacuum solar collector tube (1) with equal diameter; the wall thickness of the inner glass tube (9) is more than that of a cover glass tube (8) of the all-glass vacuum solar collector tube (1) by 0.8-1.2 mm, and the thickness of the glass wall of the hot seal end (5) on the condensation section (4) is equal to the thickness of the wall of the cover glass tube (8); a heat transfer medium (7) is filled in a vacuum cavity (6) of the all-glass heat tube (2), and the volume ratio of the heat transfer medium (7) and the vacuum cavity (6) is 0.05%-0.4%; and the length L1 of the condensation section (4) is 70-150mm. The heat tube type all-glass evacuated solar collector tube integrates the heat collection and heat transferring, is quick in heat transfer speed, high in heat efficiency, good in performance, safe and reliable, easy to manufacture, low in cost, convenient to install and transport and easy to promote and apply, and the national performance standards can be met.
Description
Technical field
The invention belongs to field of solar utilizing equipment, relate to a kind of heat pipe type full-glass vacuum solar collector pipe.
Background technology
In solar thermal collector and water heater, the combination of glass vacuum solar collector tubes and heat pipe has three kinds, the first is that the metal heat pipe with absorber is placed in single-glass pipe, gap vacuumizes between the two, and adopts metal and glass heat press seal mode sealed vacuum chamber, and weak point is, very large based on metal and two kinds of material nature differences of glass, therefore, mode sealed vacuum chamber complex process is sealed in hot pressing, difficulty is large, unreliable, and cost is high simultaneously, the metal heat pipe that the second is band absorber (as fin) inserts in complete glass vacuum sun thermal-collecting tube, and because gap is between the two antivacuum shape, therefore, effect is undesirable, and cost is high, the third is the evaporator section shell using the inner glass tube of complete glass vacuum sun thermal-collecting tube as heat pipe, the glass condensation segment of separately joining heat pipe, its great advantage is simple in structure, cost is low, effect is good, be beneficial to and apply, weak point is, inner glass tube and cover glass tube all adopt the glass tube of conventional wall thickness (being that GB is 1.6 ± 0.2mm), its compressive resistance is on the low side, therefore and limited the addition of the heat-transfer working medium in heat-tube vacuum chamber, heat-transfer working medium addition is on the high side, in application, the pressure in heat pipe is high, the easy explosion of heat pipe, impact is normal to be used, and the addition of heat-transfer working medium is on the low side, can reduce the thermal efficiency again, affect result of use, another aspect, if application number is in 2004200509367 disclosed technical schemes, the glass condensation segment of heat pipe is at the ring seal rim of a cup place of complete glass vacuum sun thermal-collecting tube, to burn the way realization of melting a glass butt tube, can make complete glass vacuum sun thermal-collecting tube produce second heat stress, and be difficult to effective elimination, can produce potential safety hazard, consumptive material is many simultaneously, recruitment duration.
Summary of the invention
The technical problem solving:
A kind of heat pipe type full-glass vacuum solar collector pipe is provided, can overcomes the deficiencies in the prior art, can not only improve compressive resistance and the mechanical strength of heat pipe, easily make simultaneously, cost is low, is easy to apply.
The technical scheme adopting:
A kind of heat pipe type full-glass vacuum solar collector pipe, comprise complete glass vacuum sun thermal-collecting tube, all-glass heat pipe, described all-glass heat pipe is by evaporator section, heat-sealing end on condensation segment and condensation segment forms, in the vacuum chamber of all-glass heat pipe, heat-transfer working medium is housed, it is characterized in that: the evaporator section of all-glass heat pipe consists of the inner glass tube of complete glass vacuum sun thermal-collecting tube, the condensation segment of all-glass heat pipe consists of from the coaxial also equal diameter extension in the ring seal rim of a cup place of complete glass vacuum sun thermal-collecting tube the inner glass tube of complete glass vacuum sun thermal-collecting tube, vacuum exhaust mouth on the condensation segment termination of all-glass heat pipe is to be the heat-sealing end on described condensation segment after the filling nozzle of heat-transfer working medium seals, the evaporator section of described all-glass heat pipe and the pipe thickness of condensation segment, also the pipe thickness that is described inner glass tube all increases 1.0 ± 0.2mm than the pipe thickness of the cover glass tube of complete glass vacuum sun thermal-collecting tube, and the glass wall thickness of the heat-sealing end on described condensation segment equals the pipe thickness of described cover glass tube.
Beneficial effect;
Due to the condensation segment of all-glass heat pipe, with the inner glass tube of complete glass vacuum sun thermal-collecting tube, from the ring seal rim of a cup place of complete glass vacuum sun thermal-collecting tube, coaxial and equal diameter extension forms, can overcome burning in prior art melts butt tube method and makes ring seal rim of a cup place produce the deficiency of second heat stress, and easily make, save material, can also improve security performance; The evaporator section of all-glass heat pipe and the pipe thickness of condensation segment, also be that the pipe thickness of inner glass tube is than the increase of the pipe thickness of cover glass tube, can obviously improve security performance, and heat-sealing end is done the processing of pressure limiting thin-walled with respect to the pipe thickness of evaporator section and condensation segment, can play relief valve in bombing under abnormal condition, be conducive to safety.The selection of the volume ratio of the liquid phase volume of heat-transfer working medium and the total measurement (volume) of vacuum chamber is applicable with described setted structure; The present invention can make thermal-arrest, it is integrated to conduct heat, function admirable, safe and reliable, can reach designing requirement completely, easily make, cost is low, is suitable for assembling solar heat collector and water heater, performance reaches national standard specification requirement, be convenient to install, transport simultaneously, be easy to apply the regional water heater market demand of particularly suitable China " three Norths ".
Accompanying drawing explanation
Fig. 1, general structure schematic diagram;
The warm varied curve figure of single heat pipe type full-glass vacuum solar collector pipe air drying experiment condensation segment 4 of Fig. 2, embodiment mono-.
The specific embodiment
Further explanation in detail by reference to the accompanying drawings;
As shown in Figure 1, the structure of complete glass vacuum sun thermal-collecting tube 1 is known technology, there is the corresponding vacuum interlayer 11 being formed by cover glass tube 8, inner glass tube 9, blind end 15 and ring seal rim of a cup 10, getter 12, breathing film 13, coating for selective absorption 14 and respective support 16 are also housed in vacuum interlayer 11, described a kind of heat pipe type full-glass vacuum solar collector pipe, comprise complete glass vacuum sun thermal-collecting tube 1, all-glass heat pipe 2, described all-glass heat pipe 2 is comprised of the heat-sealing end 5 on evaporator section 3, condensation segment 4 and condensation segment 4, in the vacuum chamber 6 of all-glass heat pipe 2, heat-transfer working medium 7 is housed, the evaporator section 3 of described all-glass heat pipe 2 consists of the inner glass tube 9 of complete glass vacuum sun thermal-collecting tube 1, the condensation segment 4 of all-glass heat pipe 2 consists of from the coaxial also equal diameter extension in ring seal rim of a cup 10 places of complete glass vacuum sun thermal-collecting tube 1 inner glass tube 9 of complete glass vacuum sun thermal-collecting tube 1, therefore can avoid making ring seal rim of a cup 10 places of complete glass vacuum sun thermal-collecting tube 1 to produce second heat stress, to improve security performance, vacuum exhaust mouth on condensation segment 4 terminations of all-glass heat pipe 2 is to be the heat-sealing end 5 on described condensation segment 4 after the filling nozzle of heat-transfer working medium 7 seals, the evaporator section 3 of described all-glass heat pipe 2 and the pipe thickness of condensation segment 4, also the pipe thickness that is described inner glass tube 9 all increases 1.0 ± 0.2mm than the pipe thickness of the cover glass tube of complete glass vacuum sun thermal-collecting tube 18, and the glass wall thickness of the heat-sealing end 5 on described condensation segment 3 equals the pipe thickness of described cover glass tube 8.
The pipe thickness of described evaporator section 3 and condensation segment 4 all increases 1.0 ± 0.2mm with respect to the pipe thickness of cover glass tube 8, can effectively prevent all-glass heat pipe 2---especially there is bombing bearing continuously on the evaporator section 3 of high temperature, thereby raising security performance, experimental and theoretical computation shows, tube wall thickens 1.0mm, and the bearing capacity of glass heat pipe improves 1.70 times.
The glass wall thickness of the heat-sealing end 5 on described condensation segment 4 equals the pipe thickness of cover glass tube 8, with respect to the thickness of evaporator section 3 and condensation segment 4 tube walls, making pressure limiting thin-walled processes, so that heat-sealing is held 5 energy bombings and is played relief valve under abnormal condition, and after its bombing pressure release, both just the water in solar energy hot water tank entered wherein, do not have any danger, still can be used as common complete glass vacuum sun thermal-collecting tube and use, can not affect the operation of integral solar water heater yet.
As shown in fig. 1, the length L of the condensation segment 4 of described all-glass heat pipe 2
1be 70～150mm, the length L of condensation segment 4 refers to from ring seal rim of a cup 10 places of described complete glass vacuum sun thermal-collecting tube 1 to the distance of the heat-sealing end 5 on the condensation segment 4 of all-glass heat pipe 2, i.e. the length of inner glass tube 9 and equal diameter extension coaxial from ring seal rim of a cup 10 places of complete glass vacuum sun thermal-collecting tube 1.
In the present invention, the volume ratio of the volume of the liquid phase heat-transfer working medium 7 being equipped with in the vacuum chamber 6 of all-glass heat pipe 2 and the total measurement (volume) of vacuum chamber 6 is 0.05%～0.4%, is preferably 0.1～0.3%, is preferably 0.15～0.25%.
The glycol water that in the present invention, heat-transfer working medium 7 is 0～50% or 0～30% methanol aqueous solution, described percentage is the volume ratio of ethylene glycol or methyl alcohol and water; In heat-transfer working medium 7, also contain the methylene blue, fluorescein or the phthalein viridescent that are less than 0.01%, described percentage is the mass ratio of pigment and heat-transfer working medium 7.
Embodiment 1
Press shown in Fig. 1 structure heat pipe type full-glass vacuum solar collector pipe length L.1800mm, the external diameter 58mm of cover glass tube 8, wall thickness is 1.8mm, and the external diameter of inner glass tube 9 is 47mm, and wall thickness is 2.6mm, the extension length L of inner glass tube 9
1---the length that is condensation segment 4 is 100mm, and the glass wall thickness of heat-sealing end 5 is 1.8mm, the length L of evaporator section 3
2for 1770mm; The total measurement (volume) of vacuum chamber 6 is V
12566cm
3, heat-transfer working medium 7 is distilled water, its liquid phase volume is V
25.1ml, both volume ratios are V
2/ V
1=0.2%.
As shown in table, for the condensation segment 4 of the single heat pipe type full-glass vacuum solar collector pipe of embodiment 1 inserts vexed solarization in the test water tank of 10 liters of being filled with water, thermal performance test result under normal solar radiation, data are the hot property data (two groups) of simulation water heater.
Table one
As shown in Figure 2, for the condensation segment 4 of the single heat pipe type full-glass vacuum solar collector pipe of embodiment 1 is embedded in polyurethane, lets out and in foam thermal insulation jacket, carry out air drying temperature experiment, condensation segment 4 temperature variation curves under normal solar radiation, in figure, curve A is shown condensation segment 4 temperature and time graphs of a relation, and curve B is shown environment temperature and time chart.Described air drying refers to that the condensation segment 4 of thermal-collecting tube is under water-less environment evaporator section 3 is carried out to solar radiation.
Test result shown in table one and Fig. 2, is in mid-November, 2010 and carries out under fine day.
Claims (5)
1. a heat pipe type full-glass vacuum solar collector pipe, comprise complete glass vacuum sun thermal-collecting tube, all-glass heat pipe, described all-glass heat pipe is by evaporator section, heat-sealing end on condensation segment and condensation segment forms, in the vacuum chamber of all-glass heat pipe, heat-transfer working medium is housed, it is characterized in that: the evaporator section of all-glass heat pipe consists of the inner glass tube of complete glass vacuum sun thermal-collecting tube, the condensation segment of all-glass heat pipe consists of from the coaxial also equal diameter extension in the ring seal rim of a cup place of complete glass vacuum sun thermal-collecting tube the inner glass tube of complete glass vacuum sun thermal-collecting tube, vacuum exhaust mouth on the condensation segment termination of all-glass heat pipe is to be the heat-sealing end on described condensation segment after the filling nozzle of heat-transfer working medium seals, the evaporator section of described all-glass heat pipe and the pipe thickness of condensation segment, also be the pipe thickness of described inner glass tube, all than the pipe thickness of the cover glass tube of complete glass vacuum sun thermal-collecting tube, increase 1.0 ± 0.2mm, the glass wall thickness of the heat-sealing end on described condensation segment equals the pipe thickness of described cover glass tube.
2. a kind of heat pipe type full-glass vacuum solar collector pipe according to claim 1, is characterized in that: the volume ratio of the liquid phase volume of the heat-transfer working medium (7) being equipped with in the vacuum chamber (6) of all-glass heat pipe (2) and the total measurement (volume) of vacuum chamber (6) is 0.05%～0.4%.
3. a kind of heat pipe type full-glass vacuum solar collector pipe according to claim 1, is characterized in that: the volume ratio of the liquid phase volume of the heat-transfer working medium (7) being equipped with in the vacuum chamber (6) of all-glass heat pipe (2) and the total measurement (volume) of vacuum chamber (6) is 0.1%～0.3%.
4. a kind of heat pipe type full-glass vacuum solar collector pipe according to claim 1, is characterized in that: the volume ratio of the liquid phase volume of the heat-transfer working medium (7) being equipped with in the vacuum chamber (6) of all-glass heat pipe (2) and the total measurement (volume) of vacuum chamber (6) is 0.15%～0.25%.
5. according to a kind of heat pipe type full-glass vacuum solar collector pipe described in claim 1,2,3 or 4, it is characterized in that: the glycol water that heat-transfer working medium (7) is 0%～50%, or be 0%～30% methanol aqueous solution, described percentage is the volume ratio of ethylene glycol or methyl alcohol and water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210014689.4A CN102538255B (en) | 2012-01-18 | 2012-01-18 | Heat tube type all-glass vacuum solar collector tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210014689.4A CN102538255B (en) | 2012-01-18 | 2012-01-18 | Heat tube type all-glass vacuum solar collector tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102538255A CN102538255A (en) | 2012-07-04 |
| CN102538255B true CN102538255B (en) | 2014-09-10 |
Family
ID=46345797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210014689.4A Active CN102538255B (en) | 2012-01-18 | 2012-01-18 | Heat tube type all-glass vacuum solar collector tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102538255B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4119085A (en) * | 1975-09-22 | 1978-10-10 | Grumman Aerospace Corporation | Solar energy collector |
| CN1563847A (en) * | 2004-03-18 | 2005-01-12 | 王恒月 | Anti-explosion solar all glass vacuum heat collecting tubes |
| CN1815102A (en) * | 2005-02-06 | 2006-08-09 | 北京清华阳光能源开发有限责任公司 | Full-glass heat-pipe type vacuum solar heat-collecting pipe |
| CN101344331A (en) * | 2008-08-27 | 2009-01-14 | 黄永定 | Light-concentration explosion-proof full glass heat pipe type solar heat collection pipe |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5912253A (en) * | 1982-07-13 | 1984-01-21 | Sanyo Electric Co Ltd | Solar heat collector |
| JPS59229138A (en) * | 1983-06-10 | 1984-12-22 | Matsushita Electric Ind Co Ltd | Vacuum glass tube type solar heat collector |
| CN2757029Y (en) * | 2004-11-06 | 2006-02-08 | 淮安市淮阴辉煌真空镀膜有限公司 | Novel full glass vacuum heat collecting tube for pressure-bearing solar water heater |
| CN2797976Y (en) * | 2005-02-06 | 2006-07-19 | 北京清华阳光能源开发有限责任公司 | Full glass heat-pipe type vacuum solar energy heat collector |
| CN101245953A (en) * | 2007-12-29 | 2008-08-20 | 浙江工业大学 | Improved full glass vacuum tube type solar energy water heater |
| CN101762038A (en) * | 2008-10-27 | 2010-06-30 | 北京环能海臣科技有限公司 | All-glass heat pipe vacuum collector tube provided with reflecting condenser |
| CN202719786U (en) * | 2012-01-18 | 2013-02-06 | 天普新能源科技有限公司 | Heat pipe type all-glass vacuum solar heat collecting pipe |
-
2012
- 2012-01-18 CN CN201210014689.4A patent/CN102538255B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4119085A (en) * | 1975-09-22 | 1978-10-10 | Grumman Aerospace Corporation | Solar energy collector |
| CN1563847A (en) * | 2004-03-18 | 2005-01-12 | 王恒月 | Anti-explosion solar all glass vacuum heat collecting tubes |
| CN1815102A (en) * | 2005-02-06 | 2006-08-09 | 北京清华阳光能源开发有限责任公司 | Full-glass heat-pipe type vacuum solar heat-collecting pipe |
| CN101344331A (en) * | 2008-08-27 | 2009-01-14 | 黄永定 | Light-concentration explosion-proof full glass heat pipe type solar heat collection pipe |
Non-Patent Citations (2)
| Title |
|---|
| JP昭59-12253A 1984.01.21 |
| JP特开昭59-229138A 1984.12.22 |
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| Publication number | Publication date |
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| CN102538255A (en) | 2012-07-04 |
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Denomination of invention: Heat tube type all-glass vacuum solar collector tube Effective date of registration: 20150213 Granted publication date: 20140910 Pledgee: Haidian Beijing science and technology enterprise financing Company limited by guarantee Pledgor: Beijing universal solar energy industry Co., Ltd.|Amperex Technology Limited Registration number: 2015990000143 |
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Denomination of invention: Heat tube type all-glass vacuum solar collector tube Effective date of registration: 20170518 Granted publication date: 20140910 Pledgee: Haidian Beijing science and technology enterprise financing Company limited by guarantee Pledgor: Beijing Amperex Technology Limited solar energy industry Co., Ltd. Registration number: 2017990000417 |
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Denomination of invention: Heat tube type all-glass vacuum solar collector tube Effective date of registration: 20190930 Granted publication date: 20140910 Pledgee: Haidian Beijing science and technology enterprise financing Company limited by guarantee Pledgor: Tianpu New Energy Technology Co., Ltd. Registration number: Y2019990000301 |
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Date of cancellation: 20210401 Granted publication date: 20140910 Pledgee: Haidian Beijing science and technology enterprise financing Company limited by guarantee Pledgor: TIANPU NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2019990000301 |
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Denomination of invention: A heat pipe type all glass vacuum solar collector Effective date of registration: 20210427 Granted publication date: 20140910 Pledgee: Beijing agricultural financing Company limited by guarantee Pledgor: TIANPU NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2021110000012 |
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