CN2231780Y - Vacuum glass solar heat collecting pipe - Google Patents
Vacuum glass solar heat collecting pipe Download PDFInfo
- Publication number
- CN2231780Y CN2231780Y CN95215311U CN95215311U CN2231780Y CN 2231780 Y CN2231780 Y CN 2231780Y CN 95215311 U CN95215311 U CN 95215311U CN 95215311 U CN95215311 U CN 95215311U CN 2231780 Y CN2231780 Y CN 2231780Y
- Authority
- CN
- China
- Prior art keywords
- tube
- glass tube
- heat
- pipe
- length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
- F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Insulation (AREA)
Abstract
The utility model relates to a vacuum glass solar heat collecting pipe which is suitable for a solar heat collector. The utility model optimally designs the proportional relation of the length 1 of an inner glass pipe and the diameter d of the glass pipe. The heat loss of the pipe end of the heat collecting pipe is reduced, the heat collecting rate is raised, and the cost is reduced.
Description
The utility model relates to a kind of all glass vacuum heat collection tube of solar energy, and it is applicable to solar thermal collector.
All glass vacuum heat collection tube of solar energy since collecting efficiency height, heat waste little, particularly make the water heater that heat collecting element constitutes by it, boiler is not subjected to influencing of environment temperature, cold district can annually use in the winter time.The heat collector that is made of it also can be used for all many-sides such as industrial heating, drying, drinks accelerating, refrigeration, desalinization, has vast potential for future development.Therefore, how to guarantee all glass vacuum heat collection tube of solar energy quality, improve collecting efficiency, reduce heat waste, be the important topic that those skilled in the art pay close attention to always.Chinese patent 872100; 32 disclose the typical structure of this thermal-collecting tube: it is made up of between inner glass tube 1 and the outer glass pipe 2 inner glass tube 1, outer glass pipe 2, the metal support card 4 that has a getter and is pumped into high vacuum 3, deposit aluminium-nitrogen/aluminium solar selectively absorbing coating 5 on the outer surface of inner glass tube 1, as shown in Figure 1 (" a kind of all glass vacuum heat collection tube of solar energy " patent No. is 87210032).The inner glass tube length 1 of this thermal-collecting tube is 1.2m, is 3.7 * 10 through d directly
-2 M.By accompanying drawing 1 as can be seen: 1. the blind end of inner glass tube 1 rides in the metal support card 4 that has getter, and this metal support card 4 is adjacent to the inwall in corresponding outer glass pipe 2 ends; 2. there is one section outer surface not have depositing solar coating for selective absorption 5 near the openend of inner glass tube 1.When all glass vacuum heat collection tube of solar energy is worked, have the metal support card of getter and near that section glass tube of the no absorber coatings of inner glass tube openend, can introduce additional heat conduction and high radiation heat loss, hereinafter to be referred as thermal-collecting tube end heat waste.The size of this heat waste is relevant with length of inner glass tube 1 and diameter d.
The purpose of this utility model is the length 1 of optimal design all glass vacuum heat collection tube of solar energy inner glass tube and the proportionate relationship of diameter d, to reduce thermal-collecting tube end heat waste.
Technical essential of the present utility model is: the length 1 of inner glass tube is greater than 1.2m, smaller or equal to 2m, i.e. 1.2m＜1≤2m, the ratio of inner glass tube length 1 and its diameter d be more than or equal to 35, smaller or equal to 46, i.e. 35≤1/d≤46.
The size of all glass vacuum heat collection tube of solar energy inner glass tube diameter d, influence the size of intraductal heat transfer Fluid Volume, when diameter d is big, heat collector for the arrangement of thermal-collecting tube north and south, the heat of the heat-transfer fluid in the thermal-collecting tube is stayed in the pipe as energy storage and can not be transferred to heat storage tank, can not be utilized, therefore, the big more obsolete hot fluid of diameter of inner pipe is many more, i.e. energy storage is many more.And the diameter of glass tube is big more, and cost is also high more; But when the inner glass tube diameter was big, under same solar irradiation, solar selectively absorbing coating that it is surperficial and heat-transfer fluid mean temperature difference were little, and coating radiation heat loss is little.Otherwise, when inner glass tube diameter d hour, the difference of its surperficial solar selectively absorbing coating and heat-transfer fluid mean temperature is big, and coating radiation heat loss is big, therefore, the diameter d of the suitable inner glass tube of design can reduce the heat waste of all glass vacuum heat collection tube of solar energy.The heat waste influence of 1 pair of thermal-collecting tube end of thermal-collecting tube inner glass tube length also is tangible, when inner glass tube length 1 hour, the thermal-collecting tube end heat waste relative scale of introducing is big, otherwise, when inner glass tube length 1 was big, the thermal-collecting tube end heat waste relative scale of introducing was just little, simultaneously when producing the vacuum tube collector of same daylighting area, can reduce thermal-collecting tube quantity, can enhance productivity, reduce cost.But, when the length 1 of inner glass tube is excessive, existence required sternly to increase substantially the cost of glass tube to the glass tube flexibility, in addition, in the collecting system of thermal-collecting tube East and West direction horizontal setting, when solar irradiance is high, reverse whirlpool can appear near interior duct occlusion end, and heat exchange is deteriorated significantly.Therefore the proportionate relationship of the length 1 of the interior pipe of optimal design all glass vacuum heat collection tube of solar energy and diameter d can reduce thermal-collecting tube end heat waste and can reduce cost.
The utility model has the advantages that the end heat waste is little, collecting efficiency is high, cost is low.
Description of drawings:
Accompanying drawing 1 is the structure chart of all glass vacuum heat collection tube of solar energy.
Embodiment 1: the ratio that adopts the interior length of tube 1 of thermal-collecting tube and its diameter d: 1/d=40 diameter of inner pipe d is 3.7 * 10
-2During m, interior length of tube 1 is 1.48m.
Embodiment 2: the ratio that adopts the interior length of tube 1 of thermal-collecting tube and its diameter d: 1/d=45 diameter of inner pipe d is 4.3 * 10
-2During m, interior length of tube 1 is 1.94m.
Claims (1)
1, a kind of all glass vacuum heat collection tube of solar energy, form by inner glass tube, outer glass pipe, the metal support card that has a getter, be pumped into high vacuum between the inside and outside glass tube, the solar selectively absorbing coating that deposition is arranged on the outer surface of inner glass tube, the length 1 that it is characterized in that inner glass tube greater than 1.2 meters, smaller or equal to 2 meters, and the ratio of length 1 and diameter d: 1/d is more than or equal to 35, smaller or equal to 46.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95215311U CN2231780Y (en) | 1995-07-07 | 1995-07-07 | Vacuum glass solar heat collecting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95215311U CN2231780Y (en) | 1995-07-07 | 1995-07-07 | Vacuum glass solar heat collecting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2231780Y true CN2231780Y (en) | 1996-07-24 |
Family
ID=33864698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95215311U Expired - Lifetime CN2231780Y (en) | 1995-07-07 | 1995-07-07 | Vacuum glass solar heat collecting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2231780Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100447522C (en) * | 2007-03-13 | 2008-12-31 | 华北电力大学 | Solar energy vacuum glass heat accumulating tube utilizing oscillating flow heat tube as heat internal tube |
| CN101891404A (en) * | 2010-08-06 | 2010-11-24 | 朱雷 | Vacuum glass |
| CN101398230B (en) * | 2007-09-25 | 2011-01-05 | 深圳市聚焦太阳能有限公司 | Internal-concentrator glass vacuum solar collector tubes |
| CN102575873A (en) * | 2009-09-29 | 2012-07-11 | 肖特太阳能控股公司 | Absorber pipe |
| CN102588231A (en) * | 2011-01-10 | 2012-07-18 | 北京创意博能源科技有限公司 | Heat and power cogeneration vacuum tube for solar energy |
-
1995
- 1995-07-07 CN CN95215311U patent/CN2231780Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100447522C (en) * | 2007-03-13 | 2008-12-31 | 华北电力大学 | Solar energy vacuum glass heat accumulating tube utilizing oscillating flow heat tube as heat internal tube |
| CN101398230B (en) * | 2007-09-25 | 2011-01-05 | 深圳市聚焦太阳能有限公司 | Internal-concentrator glass vacuum solar collector tubes |
| CN102575873A (en) * | 2009-09-29 | 2012-07-11 | 肖特太阳能控股公司 | Absorber pipe |
| CN102575873B (en) * | 2009-09-29 | 2015-02-11 | 肖特太阳能控股公司 | Absorber pipe |
| CN101891404A (en) * | 2010-08-06 | 2010-11-24 | 朱雷 | Vacuum glass |
| CN102588231A (en) * | 2011-01-10 | 2012-07-18 | 北京创意博能源科技有限公司 | Heat and power cogeneration vacuum tube for solar energy |
| CN102588231B (en) * | 2011-01-10 | 2013-11-20 | 北京创意博能源科技有限公司 | Heat and power cogeneration vacuum tube for solar energy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: SOLAR ENERGY ELECTRONIC FACTORY OF QINGHUA UNIV., BEIJING TO: BEIJING TSINGHUA SUNSHINE ENERGY DEVELOPMENT CO. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Qinghua Yangguang Energy Development Co., Ltd., Beijing Patentee before: Solar Energy Electronic Factory, Beijing Qinghua Univ. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |