CN103423895A - Full-glass vacuum heat collection element changing vacuum degree for stagnation protection - Google Patents
Full-glass vacuum heat collection element changing vacuum degree for stagnation protection Download PDFInfo
- Publication number
- CN103423895A CN103423895A CN201210158072XA CN201210158072A CN103423895A CN 103423895 A CN103423895 A CN 103423895A CN 201210158072X A CN201210158072X A CN 201210158072XA CN 201210158072 A CN201210158072 A CN 201210158072A CN 103423895 A CN103423895 A CN 103423895A
- Authority
- CN
- China
- Prior art keywords
- glass tube
- inner glass
- vacuum
- heat
- stagnation
- 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.)
- Pending
Links
- 239000011521 glass Substances 0.000 title claims abstract description 47
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000006059 cover glass Substances 0.000 claims abstract description 7
- 230000037072 sun protection Effects 0.000 claims description 8
- 238000009954 braiding Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 abstract description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 2
- 230000000630 rising effect Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 238000007605 air drying Methods 0.000 description 9
- 239000010410 layer Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
Landscapes
- Thermal Insulation (AREA)
Abstract
In the graph 1, a cover glass tube (1) and an inner glass tube (2) are in sealed connection in a concentric mode to form a full-glass vacuum heat collection element changing the vacuum degree for stagnation protection. On the non-light-facing face of an area, with the angle of circumference being 140 degrees, of the inner glass tube (2), a steel wire snap spring is connected with an activated carbon fiber adsorbing material (4) in a low heat resistance mode, a fusion-sealing position of the inner glass tube (2) extends outwards by a section and then is sealed, vacuum pumping is conducted on the interior of the inner glass tube (2), working media are poured into the inner glass tube (2), and the inner glass tube (2) is sealed to be made into a heat tube. According to the working principle of the embodiment of the graph 1, sunlight penetrates through the cover glass tube (1) and is converted into heat energy on a film layer of the inner glass tube (2), and the heat energy is output through a cold end (5). When heat is collected normally, the temperature of the surface of the inner glass tube (2) is no more than 90 DEG C, and the adsorbing material cannot be desorbed. When stagnation is conducted, the temperature of the surface of the inner glass tube (2) is high, and the vacuum degree of a vacuum heat insulating layer (3) declines as the adsorbing material is desorbed and emits gas. The inner glass tube (2) releases partial heat energy to the environment through gas in the vacuum heat insulating layer (3), and excessive rising of the stagnation temperature is limited.
Description
Technical field
The present invention relates to changable vacuum degree empty sun protection full glass vacuum heat collection element.
Background technology
The all-glass heat pipe vacuum collector tube of existing heat pipe and the integrated making of inner glass tube, have high absorptivity and extremely low emissivity, when obtaining gratifying solar collecting performance and heat-collecting temperature, also makes the air drying temperature reach more than 230 ℃.High like this air drying temperature is brought the too high problem of heat-pipe working medium vapour pressure of integrated making sometimes.
Summary of the invention
The objective of the invention is to provide changable vacuum degree empty sun protection full glass vacuum heat collection element.
The present invention solves the technical scheme that its technical problem is taked: with cover glass tube and the concentric sealing-in of inner glass tube, make a changable vacuum degree empty sun protection full glass vacuum heat collection element, at the non-side to light low thermal resistance connection sorbing material of described inner glass tube; Described sorbing material includes but not limited to the NACF of braiding; Desorb occurs and emits gas in described sorbing material higher than uniform temperature the time; Gas occurs to adsorb and absorb lower than uniform temperature the time.
Agreement: side to light refers to the zone that can be shone by direct sunlight on hard-wired solar collection element inner glass tube; Zone on the solar collection element inner glass tube except side to light is all non-side to light.
Can also adopt the glass heat pipe with the integrated making of inner glass tube.
Beneficial effect of the present invention: the non-side to light low thermal resistance at the all-glass vacuum thermal-collecting tube inner glass tube connects sorbing material.During the thermal-collecting tube normal operation, the inner glass tube temperature is no more than 90 ℃, and sorbing material is not emitted gas, and vacuum heat-insulation is effective; When air drying, gas is sent in described sorbing material generation desorb, and the vacuum of heat collecting element vacuum heat-insulating layer is reduced, and the heat energy on inner glass tube distributes by environment.Thereby the air drying temperature that has limited low heat collecting element further raises.When using water as heat-pipe working medium, when the air drying temperature is restricted to 160 ℃, vapour pressure is 6 atmospheric pressure, than 29 atmospheric pressure nearly of 230 ℃ of script air drying temperature, reduces nearly 4/5ths.Be less than for internal diameter borosilicate 3.3 inner glass tubes that 34 millimeters, wall thickness are greater than 1.6 millimeters, the integrated heat tube thermal-collecting tube of made has larger anti-air drying allowance.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the composite construction schematic diagram of a changable vacuum degree empty sun protection all-glass vacuum solar energy collection tube.
1. cover glass tubes in figure; 2. inner glass tube; 3. vacuum heat-insulating layer; 4. sorbing material; 5. cold junction.
The specific embodiment
Fig. 1 provides one embodiment of the present of invention.
In Fig. 1, with cover glass tube 1 and the concentric sealing-in of inner glass tube 2, form a chuck, the interlayer vacuum-pumping of described chuck is formed to a vacuum heat-insulating layer 3, make a changable vacuum degree empty sun protection full glass vacuum heat collection element.Deposit selective absorbing film on inner glass tube 2.Inner glass tube 2 approximately 140 the degree angle of circumference zones non-sides to light, connect the approximately activated carbon fiber adsorbing material 4 of 200 millimeters of a block length with the wire circlip low thermal resistance.Inner glass tube 2 melt the envelope place stretch out one section and the sealing, a heat pipe is made in the inner vacuum pumping loading working medium of inner glass tube 2 sealed-off.
The operation principle of Fig. 1 embodiment: sunlight is converted to heat energy through cover glass tube 1 on inner glass tube 2 retes, and these heat energy are exported by cold junction 5 with the two phase flow endless form by the working medium of inside heat pipe.During normal thermal-arrest, the surface temperature of inner glass tube 2 is no more than 90 ℃, and desorb does not occur sorbing material.During air drying, inner glass tube 2 surface temperatures are very high, and at this moment, sorbing material 4 desorbs are emitted gas and caused the vacuum of vacuum heat-insulating layer 3 to descend.Inner glass tube 2 is by the gas in vacuum heat-insulating layer 3 to environment release portion heat energy, and the excessive rising that this has just limited the air drying temperature, make the steam pressure of inside heat pipe be unlikely to too high.
Claims (2)
1. changable vacuum degree empty sun protection full glass vacuum heat collection element, made by cover glass tube and the concentric sealing-in of inner glass tube, it is characterized in that connecting sorbing material at the non-side to light low thermal resistance of described inner glass tube; Described sorbing material includes but not limited to the NACF of braiding; Desorb occurs and emits gas in described sorbing material higher than uniform temperature the time; Gas occurs to adsorb and absorb lower than uniform temperature the time.
2. changable vacuum degree empty sun protection full glass vacuum heat collection element according to claim 1, is characterized in that containing the glass heat pipe with the integrated making of inner glass tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210158072XA CN103423895A (en) | 2012-05-18 | 2012-05-18 | Full-glass vacuum heat collection element changing vacuum degree for stagnation protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210158072XA CN103423895A (en) | 2012-05-18 | 2012-05-18 | Full-glass vacuum heat collection element changing vacuum degree for stagnation protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103423895A true CN103423895A (en) | 2013-12-04 |
Family
ID=49649022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210158072XA Pending CN103423895A (en) | 2012-05-18 | 2012-05-18 | Full-glass vacuum heat collection element changing vacuum degree for stagnation protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103423895A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58115260A (en) * | 1981-12-28 | 1983-07-08 | Matsushita Electric Ind Co Ltd | Vacuum tube system heat collector of solar heat |
| JPS59150252A (en) * | 1983-02-16 | 1984-08-28 | Hitachi Ltd | Vacuum tube solar collector with enclosed heat exchanger |
| CN101093113A (en) * | 2006-06-20 | 2007-12-26 | 吴江市普天热管技术推广应用研究所 | Solar powered water heater of vacuum heat collection flat heat pipes |
| CN101762074A (en) * | 2008-12-08 | 2010-06-30 | 北京环能海臣科技有限公司 | Screwing sealed glass vacuum heat accumulating tube |
| CN201583019U (en) * | 2009-12-16 | 2010-09-15 | 黑龙江省科学院科技孵化中心 | Phase transformation solar energy heat storage device for constant-temperature laboratory |
| CN201662248U (en) * | 2010-03-10 | 2010-12-01 | 吴艳频 | Full-glass double-channel vacuum tube heat collector |
| CN102003817A (en) * | 2009-09-03 | 2011-04-06 | 施国梁 | Method and device capable of controlling heat radiation of vacuum heat collection component through cover glass tube |
-
2012
- 2012-05-18 CN CN201210158072XA patent/CN103423895A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58115260A (en) * | 1981-12-28 | 1983-07-08 | Matsushita Electric Ind Co Ltd | Vacuum tube system heat collector of solar heat |
| JPS59150252A (en) * | 1983-02-16 | 1984-08-28 | Hitachi Ltd | Vacuum tube solar collector with enclosed heat exchanger |
| CN101093113A (en) * | 2006-06-20 | 2007-12-26 | 吴江市普天热管技术推广应用研究所 | Solar powered water heater of vacuum heat collection flat heat pipes |
| CN101762074A (en) * | 2008-12-08 | 2010-06-30 | 北京环能海臣科技有限公司 | Screwing sealed glass vacuum heat accumulating tube |
| CN102003817A (en) * | 2009-09-03 | 2011-04-06 | 施国梁 | Method and device capable of controlling heat radiation of vacuum heat collection component through cover glass tube |
| CN201583019U (en) * | 2009-12-16 | 2010-09-15 | 黑龙江省科学院科技孵化中心 | Phase transformation solar energy heat storage device for constant-temperature laboratory |
| CN201662248U (en) * | 2010-03-10 | 2010-12-01 | 吴艳频 | Full-glass double-channel vacuum tube heat collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20131204 Assignee: Shanghai Changyu Information Science & Technology Co., Ltd. Assignor: Shi Kanchao Contract record no.: 2012310000241 Denomination of invention: Variable-vacuum-degree idle sunning protection method and variable-vacuum-degree idle sunning protection product for all-glass vacuum heat collecting element License type: Common License Record date: 20121225 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 314400, Zhejiang province Haining Yuan Flower Town East Village home 35 Applicant after: Shi Kanchao Address before: 200050 No. 57, 1 Xuanhua Road, Shanghai, Changning District 402 Applicant before: Shi Kanchao |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200050 CHANGNING, SHANGHAI TO: 314400 JIAXING, ZHEJIANG PROVINCE |
|
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Haining City, Huang Wan Zhen five feng Cun Xu helped shore No. 33 Applicant after: Shi Kanchao Address before: Yuan Hua Town, Haining, East Village, home 35 Applicant before: Shi Kanchao |
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| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131204 |