CN103423899A - Variable-vacuum-degree idle sunning protection method and variable-vacuum-degree idle sunning protection product for all-glass vacuum heat collecting element - Google Patents
Variable-vacuum-degree idle sunning protection method and variable-vacuum-degree idle sunning protection product for all-glass vacuum heat collecting element Download PDFInfo
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- CN103423899A CN103423899A CN2012101624520A CN201210162452A CN103423899A CN 103423899 A CN103423899 A CN 103423899A CN 2012101624520 A CN2012101624520 A CN 2012101624520A CN 201210162452 A CN201210162452 A CN 201210162452A CN 103423899 A CN103423899 A CN 103423899A
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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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Abstract
The invention discloses a variable-vacuum-degree idle sunning protection method and a variable-vacuum-degree idle sunning protection product for an all-glass vacuum heat collecting element. The variable-vacuum-degree idle sunning protection method and the variable-vacuum-degree idle sunning protection product are characterized in that a covering glass tube 1 and an inner glass tube 2 in a figure are concentrically sealed to manufacture the all-glass vacuum heat collecting element with variable-vacuum-degree idle sunning protection; a non-sunny surface in an area with a circumferential angle of about 140 degrees of the inner glass tube 2 is connected with an activated carbon fiber adsorption material 4 by a steel wire clamp spring in a low-heat-resistance manner; a section at a melted and sealed position of the inner glass tube 2 outwardly extends and is closed, the inside of the inner glass tube 2 is vacuumized, working media are filled into the inner glass tube 2, and the inner glass tube is sealed off, so that a heat tube is manufactured. A working principle of an embodiment shown in the figure 1 includes that sunlight shines through the covering glass tube 1 and is converted into heat energy on a film of the inner glass tube 2, and the heat energy is outputted via a cold end 5. The variable-vacuum-degree idle sunning protection method and the variable-vacuum-degree idle sunning protection product have the advantages that when heat is normally collected, the surface temperature of the inner glass tube 2 is not higher than 90 DEG C, the adsorption material is prevented from performing desorption; when in idle sunning, the surface temperature of the inner glass tube 2 is quite high, the adsorption material performs desorption, gas is released, and accordingly a vacuum degree of a vacuum heat-insulation layer 3 is reduced; a part of the heat energy is released to an environment by the inner glass tube 2 via the gas in the vacuum heat-insulation layer 3, and accordingly the idle sunning temperature is prevented from being excessively increased.
Description
Technical field
The present invention relates to changable vacuum degree empty sun protection full glass vacuum heat collection element method and product.
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 method and product.
The present invention solves the method that its technical problem is taked: thus the heat release that the vacuum when reducing the full glass vacuum heat collection element air drying increases environment reduces the air drying temperature, concrete mode includes but not limited to: make an all-glass vacuum thermal-collecting tube with cover glass tube and the concentric sealing-in of inner glass tube, 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.
The present invention solves according to said method 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.
Can also adopt the glass heat pipe with the integrated making of inner glass tube.
Can also make the inner glass tube two ends all with cover glass tube, melt envelope and be connected, form an all-glass vacuum thermal-collecting tube that inner glass tube is straight-through.
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, and 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, described sorbing material generation desorb is also sent gas, 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.
Sometimes, anti-air drying requires of crucial importance, at this moment, even the low vacuum of heat collecting element some also can accept.
Claims (4)
1. changable vacuum degree empty sun protection full glass vacuum heat collection element method: thus it is characterized in that the heat release that the vacuum when reducing the full glass vacuum heat collection element air drying increases environment reduces the air drying temperature, concrete mode includes but not limited to: make an all-glass vacuum thermal-collecting tube with cover glass tube and the concentric sealing-in of inner glass tube, 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.
2. the changable vacuum degree empty sun protection full glass vacuum heat collection element that method is manufactured according to claim 1, 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.
3. changable vacuum degree empty sun protection full glass vacuum heat collection element according to claim 2, is characterized in that containing the glass heat pipe with the integrated making of inner glass tube.
4. changable vacuum degree empty sun protection full glass vacuum heat collection element according to claim 2, is characterized in that the inner glass tube two ends all melt envelope with cover glass tube and be connected, and forms an all-glass vacuum thermal-collecting tube that inner glass tube is straight-through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101624520A CN103423899A (en) | 2012-05-18 | 2012-05-18 | Variable-vacuum-degree idle sunning protection method and variable-vacuum-degree idle sunning protection product for all-glass vacuum heat collecting element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101624520A CN103423899A (en) | 2012-05-18 | 2012-05-18 | Variable-vacuum-degree idle sunning protection method and variable-vacuum-degree idle sunning protection product for all-glass vacuum heat collecting element |
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| CN103423899A true CN103423899A (en) | 2013-12-04 |
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| CN2012101624520A Pending CN103423899A (en) | 2012-05-18 | 2012-05-18 | Variable-vacuum-degree idle sunning protection method and variable-vacuum-degree idle sunning protection product for all-glass vacuum heat collecting element |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989522A (en) * | 2017-05-04 | 2017-07-28 | 徐阳 | Through-type all-glass vacuum thermal-collecting tube |
Citations (6)
| 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 |
| 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 CN2012101624520A patent/CN103423899A/en active Pending
Patent Citations (6)
| 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 |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989522A (en) * | 2017-05-04 | 2017-07-28 | 徐阳 | Through-type all-glass vacuum thermal-collecting tube |
| CN106989522B (en) * | 2017-05-04 | 2023-01-17 | 徐阳 | Straight-through all-glass vacuum heat collecting tube |
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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 |
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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 |
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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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