CN1324275C - Anti-explosion solar all glass vacuum heat collecting tubes - Google Patents
Anti-explosion solar all glass vacuum heat collecting tubes Download PDFInfo
- Publication number
- CN1324275C CN1324275C CNB2004100121939A CN200410012193A CN1324275C CN 1324275 C CN1324275 C CN 1324275C CN B2004100121939 A CNB2004100121939 A CN B2004100121939A CN 200410012193 A CN200410012193 A CN 200410012193A CN 1324275 C CN1324275 C CN 1324275C
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- China
- Prior art keywords
- heat pipe
- glass
- heat
- pipe
- present
- 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 - Fee Related
Links
- 239000011521 glass Substances 0.000 title claims abstract description 28
- 238000004880 explosion Methods 0.000 title abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims abstract description 6
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000001179 sorption measurement Methods 0.000 abstract description 5
- 239000012808 vapor phase Substances 0.000 abstract 2
- 239000011247 coating layer Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000010792 warming Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 3
- 235000011130 ammonium sulphate Nutrition 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 3
- 229910052939 potassium sulfate Inorganic materials 0.000 description 3
- 235000011151 potassium sulphates Nutrition 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
- F24S10/90—Solar heat collectors using working fluids using internal thermosiphonic circulation
- F24S10/95—Solar heat collectors using working fluids using internal thermosiphonic circulation having evaporator sections and condenser sections, e.g. heat pipes
-
- 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
- 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 present invention relates to an anti-explosion solar full-glass vacuum heat collecting tube which belongs to the technical field of warming and heating equipment. The present invention is used for solving the problem of cracks of a glass heat pipe due to empty solarization. The present invention is provided with a glass heat pipe and a glass outer pipe, wherein the glass heat pipe and the glass outer pipe are melted and sealed; vacuum is formed between the glass heat pipe and the glass outer pipe and is formed in the heat pipe; a heat absorption coating layer is attached to the outer wall of the heat pipe; work media are filled in the heat pipe. After the heat pipe is improved, the filling amount of the liquid work media in the heat pipe is from 0.1 to 0.5%V, wherein V represents the volume inside the heat pipe. The design concept of the present invention uses a thermodynamics theory. The filling amount of the work media of the heat pipe is scientifically selected. When the temperature of the work media reaches a certain critical temperature, the work media are all converted into vapor phases. When the temperature raises continuously, the pressure raises based on rules of the vapor phases. Consequently, the work pressure in the heat pipe in a high temperature state is reduced greatly. The present invention solves the problem of cracks of full-glass vacuum heat collecting pipes due to empty solarization. The work reliability is greatly improved. Meanwhile, heat adsorption materials are additionally arranged in the heat pipe so as to ensure the renewal start of the heat pipe.
Description
Technical field
The present invention relates to a kind of element that is used for solar energy equipment, the all-glass vacuum thermal-collecting tube of explosion does not particularly take place under the empty solarization of the sun, belong to heating firing equipment technical field.
Background technology
Utilizing the solar heating heating is an advanced technology that extensively adopts in recent years.Although the structure of various solar water heaters is not quite similar, key technology all is to rely on heat collector fully to absorb the energy of sunshine, and is translated into heat energy, and the heating water source supply uses.Vacuum heat collection pipe is the heat collecting element that generally uses on the solar water heater.Its first generation product is made of interior pipe, outer tube, is evacuated between two pipes, and coated heat-absorbing material on the outer wall of inner tube flows through water in the interior pipe, relies on outer wall of inner tube to absorb solar radiant energy water is heated, and vacuum layer plays insulation effect.Therefore this vacuum tube has water because of in managing, and has easily to freeze shortcomings such as damages, easy fouling, the thermal efficiency are low.Second generation vacuum heat collection pipe still is made of heat pipe and outer tube, and outer tube and heat pipe are connected as a single entity by sealed knot, and heat pipe is outer pipe range, and it grows part and inserts in the water tank.Different with first generation product is: heat pipe and outer tube all vacuumize, and charge into working medium in the heat pipe.Its work characteristics is the vaporization of being heated of the working medium in the heat pipe, and steam rises, the backflow of after condensation segment discharges the latent heat of vaporization, condensing, by heat pipe condenser section with the water in the heat transferred water tank.Second generation product has overcome the shortcoming that first generation product easily freezes damage, be to use comparatively general heat collecting element at present, but it still has the some shortcomings part, as (sun is empty to be shone at extreme operating condition, water tank is anhydrous) time, heat pipe temperature causes that up to 250～300 degree Celsius the heat pipe internal pressure sharply raises, make heat pipe be difficult to bear, so that explosion.For this reason, the someone adopts the design of metal heat pipe with the raising bearing capacity, but the vacuum seal problem between metal tube and the glass tube is difficult to solution, so product reliability is low.
Summary of the invention
Technical problem to be solved by this invention is to overcome the defective of above-mentioned prior art and a kind of Explosion-proof all-glass solar energy vacuum collecting tube that makes heat pipe trouble free service under higher temperature is provided.
The alleged problem of the present invention is solved by following technical scheme:
A kind of Explosion-proof all-glass solar energy vacuum collecting tube, comprise glass heat pipe and glass outer tube in the formation, heat pipe is made up of evaporator section and condensation segment, and evaporator section is set in the outer tube, and condensation segment is positioned at outside the outer tube, outer tube and heat pipe sealing by fusing, be vacuum between two pipes and in the heat pipe, with heat absorbing coating, fill working medium in the heat pipe on the heat pipe outer wall, its special feature is: liquid refrigerant volume filling weight is 0.1～0.5%V in the described heat pipe, and wherein V is the volume of heat pipe.
Above-mentioned Explosion-proof all-glass solar energy vacuum collecting tube, described heat pipe evaporator section middle part is provided with ring-type absorption net, and described absorption net is fabrics with holes such as woven wire or carbon fiber silk screen.
Above-mentioned Explosion-proof all-glass solar energy vacuum collecting tube, described heat-pipe working medium are the aqueous solution of potassium sulfate, ammonium sulfate and alcohol.
Above-mentioned Explosion-proof all-glass solar energy vacuum collecting tube, the concentration of aqueous solution of described potassium sulfate, ammonium sulfate and alcohol are 0～10%.
Design concept applied thermodynamics theory of the present invention, science is selected the filling weight of heat-pipe working medium, make it when reaching a certain critical-temperature, can all be converted into vapour phase, when temperature continues to raise, pressure raises according to the rule of vapour phase, thereby has significantly reduced the operating pressure in the heat pipe under the condition of high temperature, has solved the empty problem of shining easy explosion of all-glass vacuum thermal-collecting tube, functional reliability improves greatly, and the heat exchanger effectiveness of heat pipe is not subjected to much influences.In addition, in heat pipe, set up the absorption net, help heat pipe to quick start once more.The present invention can not do big change to existing solar energy equipment can solve ubiquitous problem, and manufacturing cost is moderate, can be widely used in the relevant apparatus such as solar energy heating, refrigeration, desalinization.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Referring to Fig. 1, the utility model is made up of glass heat pipe 1 and glass outer tube 2, and wherein heat pipe is made up of evaporator section 1-2 and condensation segment 1-1, and evaporator section is sleeved in the outer tube, and condensation segment is positioned at outside the outer tube, outer tube and heat pipe sealing by fusing.All vacuumize between heat pipe and the outer tube and in the heat pipe, with the high-temperature selective heat absorbing coating, can make heat pipe have higher absorptivity and lower emissivity on the heat pipe outer wall, fill working medium in the heat pipe.Its invention main points are: change the working medium state, all be converted into vapour phase when making it reach a certain critical-temperature.Like this, when temperature continued to raise, pressure raise according to the rule of vapour phase, but not the rising of the rule of vapour-liquid two-phase, thereby can reduce the operating pressure in the heat pipe under the condition of high temperature significantly.The crucial part that realizes above-mentioned design is the filling weight of strict control heat-pipe working medium, shows that through theory measuring and calculating and actual tests the working medium filling weight is 0.1～0.5%V in the heat pipe, and wherein V is the volume in the heat pipe.Its analytic process is as follows:
The state of working medium has two kinds mutually during heat pipe work, i.e. vapour-liquid two-phase coexistent and single vapour phase.The relation of saturation temperature T and saturation pressure P is approximately P ∝ T when the vapour-liquid two-phase coexistent
11.4, by formula as seen, raising with temperature, pressure can sharply raise.The relation of saturation temperature T and saturation pressure P then is P ∝ T during single vapour phase.With water is example:
During the vapour-liquid two-phase coexistent, T=120 ℃ of P=2 atmospheric pressure; T=300 ℃ of P=89 atmospheric pressure; If during single vapour phase, T=120 ℃ of P=2 atmospheric pressure; T=300 ℃, P=2.9 atmospheric pressure.
When above data declaration all was vapour phase as if working medium in the heat pipe, both just temperature raise, and the rising degree of its operating pressure also can reduce significantly.
The key that all changes vapour phase when making working medium reach a certain critical-temperature Tk into is accurately to grasp the filling weight of working medium in the heat pipe.The general computational process of working medium filling weight is: 1. select heat-pipe working medium, tabling look-up draws the relation curve of P and T; 2. try to achieve critical-temperature Tk according to maximum withstand voltage Pmax of glass heat pipe and maximum operating temperature Tmax; 3. check in the proportion γ of saturated vapor by Tk "; 4. try to achieve filling weight G=γ " V according to the heat pipe volume V.Calculating heat pipe liquid refrigerant filling weight according to the method described above is 0.1～0.5%V.
As everyone knows, the heat-pipe working medium filling weight is 10～20%V usually, and minimum also is greater than 5%V, and obviously, working medium filling weight of the present invention is much smaller than general heat pipe.Because the filling weight of working medium seldom in the heat pipe, and the irradiation of sunlight heating is to be evenly distributed on the length of whole evaporator section, in order to quick start heat pipe, be provided with adsorption layer 3 at the evaporator section middle part, adsorption layer in the form of a ring, be provided with along the heat pipe inwall, adsorption layer can be selected fabrics with holes such as woven wire, carbon fiber silk screen for use.The working medium of adsorbing on the adsorption layer helps heat pipe to start fast once more.
It is the aqueous solution of 0～10% potassium sulfate, ammonium sulfate and alcohol that heat-pipe working medium can be selected concentration.
Claims (2)
1. Explosion-proof all-glass solar energy vacuum collecting tube, comprise glass heat pipe and glass outer tube in the formation, heat pipe is made up of evaporator section and condensation segment, and evaporator section is set in the outer tube, and condensation segment is positioned at outside the outer tube, outer tube and heat pipe sealing by fusing, be vacuum between two pipes and in the heat pipe, with heat absorbing coating, fill working medium in the heat pipe on the heat pipe outer wall, it is characterized in that: liquid refrigerant volume filling weight is 0.1～0.5%V in the described heat pipe (1), and wherein V is the volume of heat pipe.
2. Explosion-proof all-glass solar energy vacuum collecting tube according to claim 1 is characterized in that: described heat pipe evaporator section (1-2) middle part is provided with ring-type absorption net, and described absorption net is woven wire or carbon fiber silk screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100121939A CN1324275C (en) | 2004-03-18 | 2004-03-18 | Anti-explosion solar all glass vacuum heat collecting tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100121939A CN1324275C (en) | 2004-03-18 | 2004-03-18 | Anti-explosion solar all glass vacuum heat collecting tubes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1563847A CN1563847A (en) | 2005-01-12 |
| CN1324275C true CN1324275C (en) | 2007-07-04 |
Family
ID=34477932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100121939A Expired - Fee Related CN1324275C (en) | 2004-03-18 | 2004-03-18 | Anti-explosion solar all glass vacuum heat collecting tubes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1324275C (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1815102B (en) * | 2005-02-06 | 2010-12-08 | 北京清华阳光能源开发有限责任公司 | A kind of all glass heat pipe type vacuum solar heat collecting tube |
| GB0706700D0 (en) * | 2007-04-05 | 2007-05-16 | Thermomax Ltd | Heat pipe for a solar collector |
| CN102003816B (en) * | 2009-09-03 | 2012-09-26 | 陈霞 | Empty sunning resistant heat collecting element of all-glass vacuum heat pipe |
| CN101929749A (en) * | 2010-06-29 | 2010-12-29 | 张胜东 | Anti-explosion double-vacuum glass heat collection tube |
| CN102538255B (en) * | 2012-01-18 | 2014-09-10 | 天普新能源科技有限公司 | Heat tube type all-glass vacuum solar collector tube |
| CN103423901A (en) * | 2012-05-18 | 2013-12-04 | 施侃超 | Vacuum heat collecting tube with variable-vacuum-degree idle sunning protection and fin plate |
| CN103245098A (en) * | 2013-04-22 | 2013-08-14 | 海宁伊满阁太阳能科技有限公司 | Glass heat-tube solar heat accumulation component with low-arranged annular liquid storage groove |
| CN103245099B (en) * | 2013-04-22 | 2015-06-03 | 汪若文 | Glass heat-tube vacuum solar heat accumulation component with low-arranged short-barrel liquid absorbing core |
| CN103225905A (en) * | 2013-04-22 | 2013-07-31 | 海宁伊满阁太阳能科技有限公司 | Solar collector element with high-position concentration of working medium of glass heat pipe |
| CN103225888B (en) * | 2013-04-22 | 2017-09-05 | 施侃超 | The solar energy heat collector of reservoir channel-shaped thing built in heat collecting element glass heat pipe |
| CN103225887B (en) * | 2013-04-22 | 2016-04-06 | 施侃超 | Slice liquid-sucking core raises the solar energy vacuum heat collecting device of glass heat pipe working medium |
| CN103225895B (en) * | 2013-04-22 | 2016-04-06 | 周雪君 | The solar energy heat collector that a glass heat pipe working medium high position is gathered |
| CN104748417B (en) * | 2015-03-28 | 2016-11-30 | 甘肃省科学院自然能源研究所 | The explosion-proof thermal-collecting tube of solar energy |
| CN105333646A (en) * | 2015-12-03 | 2016-02-17 | 北京越洋高科节能技术有限公司 | Solar heat collector and work method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5774549A (en) * | 1980-10-27 | 1982-05-10 | Toshiba Corp | Heat collector |
| CN1121577A (en) * | 1994-10-24 | 1996-05-01 | 黄丽平 | All-glass heat pipe type vacuum heat collecting pipe |
| CN1126303A (en) * | 1995-01-03 | 1996-07-10 | 罗响 | Heat pipe type vacuum heat collecting pipe with pipe connected in segmented sealing manner |
| CN1197187A (en) * | 1997-04-21 | 1998-10-28 | 京都陶瓷株式会社 | Heat collecting tube and hot water appts. using the same |
| WO1999030089A1 (en) * | 1997-12-08 | 1999-06-17 | Hwa Rang Park | Evacuated solar heat tube, optical concentration system and installation method thereof |
| CN2358405Y (en) * | 1998-07-03 | 2000-01-12 | 罗桂荣 | Vacuum heat collecting pipe |
-
2004
- 2004-03-18 CN CNB2004100121939A patent/CN1324275C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5774549A (en) * | 1980-10-27 | 1982-05-10 | Toshiba Corp | Heat collector |
| CN1121577A (en) * | 1994-10-24 | 1996-05-01 | 黄丽平 | All-glass heat pipe type vacuum heat collecting pipe |
| CN1126303A (en) * | 1995-01-03 | 1996-07-10 | 罗响 | Heat pipe type vacuum heat collecting pipe with pipe connected in segmented sealing manner |
| CN1197187A (en) * | 1997-04-21 | 1998-10-28 | 京都陶瓷株式会社 | Heat collecting tube and hot water appts. using the same |
| WO1999030089A1 (en) * | 1997-12-08 | 1999-06-17 | Hwa Rang Park | Evacuated solar heat tube, optical concentration system and installation method thereof |
| CN2358405Y (en) * | 1998-07-03 | 2000-01-12 | 罗桂荣 | Vacuum heat collecting pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1563847A (en) | 2005-01-12 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20061222 Address after: 050081 9-4-402, 565 worker peasant Road, Hebei, Shijiazhuang Applicant after: Wang Hengyue Co-applicant after: Huang Yongnian Co-applicant after: Hubei Huayang Solar Energy Co., Ltd. Address before: 050081 9-4-402, 565 worker peasant Road, Hebei, Shijiazhuang Applicant before: Wang Hengyue Co-applicant before: Huang Yongnian |
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Effective date of registration: 20080912 Address after: Zigui, Hubei province Yichang County, Jiangsu Zigui Industrial Park, East Road, Huayang Solar Energy Ltd, 443631 Patentee after: Hubei Huayang Solar Energy Co., Ltd. Address before: No. 565, Gong Nong Road, Shijiazhuang, Hebei 9-4-402 zip code: 050081 Co-patentee before: Huang Yongnian Patentee before: Wang Heng moon Co-patentee before: Hubei Huayang Solar Energy Co., Ltd. |
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Effective date of registration: 20090109 Address after: Zigui, Zigui, Hubei County, Jiangsu province Yichang Industrial Park, East Road, Huayang Solar Energy Ltd Patentee after: Huang Yongding Address before: Zigui, Zigui, Hubei County, Jiangsu province Yichang Industrial Park, East Road, Huayang Solar Energy Ltd Patentee before: Hubei Huayang Solar Energy Co., Ltd. |
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Owner name: HUANG YONGDING Free format text: FORMER OWNER: HUBEI HUAYANG SOLAR CO., LTD. Effective date: 20090109 |
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Assignee: Hubei Huayang Solar Energy Co., Ltd. Assignor: Huang Yongding Contract fulfillment period: 2009.6.1 to 2019.5.31 Contract record no.: 2009320000985 Denomination of invention: Anti-explosion solar all glass vacuum heat collecting tubes Granted publication date: 20070704 License type: Exclusive license Record date: 20090610 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.6.1 TO 2019.5.31; CHANGE OF CONTRACT Name of requester: HUBEI HUAYANG SOLAR CO., LTD. Effective date: 20090610 |
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| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Hubei Huayang Solar Energy Co., Ltd. Assignor: Huang Yongding Contract record no.: 2009320000985 Date of cancellation: 20120323 |
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