CN1216817A - Metallic solar energy vacuum collector - Google Patents
Metallic solar energy vacuum collector Download PDFInfo
- Publication number
- CN1216817A CN1216817A CN97119979A CN97119979A CN1216817A CN 1216817 A CN1216817 A CN 1216817A CN 97119979 A CN97119979 A CN 97119979A CN 97119979 A CN97119979 A CN 97119979A CN 1216817 A CN1216817 A CN 1216817A
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- CN
- China
- Prior art keywords
- metallic
- tube
- glass
- water pipe
- solar energy
- 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
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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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- 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
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
- F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
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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)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
The invention relates to a heat generation equipment with metal water tube, glass tube, seal ring, selectivity absorption film and vacuum interlayer. Metal fins can be fitted on outside of the metal tube, and straight rib or triangular rib or discontinuous rib can be fitted inside of it. The invention product has good operating safety, high heat exchanging efficiency, excellent usability and can be used all the year round.
Description
The present invention relates to a kind of heat-generating device in the heat supply process.
The utilization of solar energy has caused the concern of various circles of society, all glass vacuum heat collection tube of solar energy that has been proposed by Tsing-Hua University wherein, " solar energy " 1997, the 1st phase, " all-glass vacuum tube gatherer 18 years ".This thermal-collecting tube is by an end opening, and the inside and outside glass bushing of other end sealing combines.Between inside and outside glass bushing, be vacuum interlayer.Selective absorption film is plated on the inner layer glass outer surface of vacuum tube.Its operation principle is to rely on glass-vacuum tube itself to form the free convection driving force towards the temperature difference between sunny side and shady face, and water is flowed in glass tube.There is following problem in all glass vacuum heat collection tube of solar energy of the type.
1. low heat exchange efficiency
Because its operation principle is to rely on the temperature difference of vacuum tube itself to form the free convection driving force, and water is flowed in glass tube.And because this glass tube draw ratio is very big, so make that the flow resistance of free convection is bigger, the coefficient of heat transfer in the pipe between water and glass tube walls is lower.
2. safety in utilization is poor
Because the selective absorption film on vacuum heat-insulating layer and the inner layer glass is arranged, so the inner layer glass tube of all-glass vacuum tube can reach very high temperature.When especially water is less or anhydrous in water tank, all the more so.In use all-glass vacuum tube has the generation of " thermal explosion " and " cold quick-fried " phenomenon.
If a glass tube generation explosion is arranged, the water in the water tank can release from this cut in the vacuum tube hot-water heating system, causes the whole system paralysis.This harm to the solar energy in large area hot water engineering is particularly serious.
3. require to adopt expensive extraordinary silicon boron glass
Since the high-absorbility that is coated with on glass, the selective absorption film of low-launch-rate, and the operating temperature of glass can be very high.For making pipe long-term work at high temperature, the thermal expansion coefficient of glass that just requires to make glass tube is low.Will adopt to cost an arm and a leg the silicon boron glass 3.3 that output is limited like this.The production of this kind glass is difficulty very.
The metallic solar energy vacuum heat collector of the objective of the invention is to propose that a kind of metallic water pipe, glass tube, rubber are sealed, selective absorbing film and vacuum interlayer being formed, the advantage of its existing flat plate collector straight channel, low flow resistance, the advantage of vacuum tube low-heat loss is arranged again, thereby solved the existing in prior technology problem.
The technical solution adopted in the present invention is that it is by metallic water pipe, glass tube, rubber seal, spectral selection absorbing film and vacuum interlayer are formed metallic solar energy vacuum heat collector.
Glass-vacuum tube and metal tube are both ends open.Glass tube is made up of the glass tube of inside and outside two-layer different-diameter, and layer glass pipe intermediate course after the welding of head and the tail two ends vacuumizes.Fluid in the pipe can be water, air or other freeze proof liquid.
Metal tube constitute two kinds of forms: the one, circle or oval metal tube (aluminium, copper or stainless steel); The 2nd, add the circle or the oval metal tube (aluminium, copper or stainless steel) of fin, fin works to increase the solar absorption area.In order to strengthen the heat exchange of metal pipe internal surface and water, on the inner surface of straight tube, also can install rib (straight rib, triangle rib, discontinuous rib) or spiral wrapping wire additional.
Being connected between metal tube and glass tube adopted sealing ring.The sealing circle is made up of heat-resisting silicon rubber.
This invention has following advantage
1. safety in utilization is good.Do not have all-glass vacuum tube thermal explosion in summer, winter cold quick-fried problem.This is particularly important to the solar energy in large area hot water engineering;
2. can use in the four seasons.Because the existence of vacuum heat-insulating layer makes this vacuum tube to use under the severe cold weather condition;
3. but high water pressure resistant.Because water flows in metal tube, rather than flows in glass tube, so whole pipe can bear higher hydraulic pressure power;
4. glass material is simple.Because plated film is on metal tube, so glass temperature is not high.So needn't adopt the silicon boron glass 3.3 of low thermal coefficient of expansion.This makes product greatly increase the adaptability of raw material, and the cost of product also can reduce;
5. heat exchange efficiency height.Because the structure difference, the operation logic of such vacuum tube water heater and all-glass vacuum tube completely different.It has the low high characteristics of the coefficient of heat transfer of flow resistance.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is along the cutaway view of A-A line direction among Fig. 1.
Come step explanation preferred embodiment of the present invention in conjunction with above-mentioned accompanying drawing now, the present invention includes: metallic water pipe 1, glass tube 2,3, rubber seals 4, selective absorbing film 5 and vacuum interlayer 6 are formed, as shown in Figure 1, wherein, metallic water pipe 1 is that cover is inserted in the glass inner tube 2, glass tube is made up of the interior pipe 2 and the outer tube 3 of different-diameter, interior outer glass pipe 2, it is the outer surface that vacuum interlayer 6 selective absorbing films 5 are plated in metallic water pipe 1 that 3 intermediate courses after the welding of two ends vacuumize, and the fluid in the metallic water pipe 1 can be a water, air or other freeze proof liquid;
The structure of metallic water pipe has two kinds: the one, and circle or oval metal tube are as aluminium, copper or stainless steel; The 2nd, add the circle or the oval metal tube of fin; As aluminium, copper or stainless steel; This metal tube outer surface is coated with selective absorbing film 5, can adds metal fin in the outside wall surface of metallic water pipe 1, it can increase the solar absorption face, in order to strengthen the heat exchange of metallic water pipe inner surface and water, can also install rib additional on the inner surface of straight tube, it can be straight rib or triangle rib or discontinuous rib; Metallic water pipe 1 can be used rubber ring 4 with being connected of glass tube 3, and sealing circle 4 (rubber ring) can be that heat-resisting silicon rubber is formed.
Claims (5)
1. metallic solar energy vacuum heat collector, it is made of inside and outside glass tube and vacuum interlayer therebetween, it is characterized in that it also includes metallic water pipe, selective absorbing film and rubber and seals, wherein, metallic water pipe is inserted in the middle of the glass-vacuum tube, absorbing film is the outer surface that is plated in metallic water pipe, glass-vacuum tube and metal tube are both ends open, and glass tube is made up of the glass tube of inside and outside two-layer different-diameter, layer glass pipe intermediate course after the welding of head and the tail two ends vacuumizes, and the fluid in the metallic water pipe can be water, air or freeze proof liquid.
2. according to the said metallic solar energy vacuum heat collector of claim 1, it is characterized in that said metallic water pipe can adopt circle or oval pipe.
3. according to the said metallic solar energy vacuum heat collector of claim 1, it is characterized in that said metallic water pipe, can install metal fin additional in its periphery.
4. according to the said metallic solar energy vacuum heat collector of claim 1, it is characterized in that metallic water pipe and glass tube, its connection can be used seal with elastometic washer, as heat-resisting silicon rubber.
5. according to the said metallic solar energy vacuum heat collector of claim 1, it is characterized in that said metallic water pipe, in its pipe, can install straight rib or triangle rib additional, or discontinuous rib or screw wrapping wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97119979A CN1216817A (en) | 1997-10-30 | 1997-10-30 | Metallic solar energy vacuum collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97119979A CN1216817A (en) | 1997-10-30 | 1997-10-30 | Metallic solar energy vacuum collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1216817A true CN1216817A (en) | 1999-05-19 |
Family
ID=5175709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97119979A Pending CN1216817A (en) | 1997-10-30 | 1997-10-30 | Metallic solar energy vacuum collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1216817A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002039005A1 (en) * | 2000-10-18 | 2002-05-16 | Hongchuan Ge | A joint for connecting a metal tube and a glass tube and its use in vacuum heat collecting tube system of solar energy |
| CN100362291C (en) * | 2005-09-30 | 2008-01-16 | 张耀明 | Solar high-temperature vacuum pipe |
| CN100398937C (en) * | 2007-02-14 | 2008-07-02 | 江苏桑夏太阳能产业有限公司 | Non-contact solar heat collector |
| CN102155804A (en) * | 2010-02-11 | 2011-08-17 | 吴丹 | Integral and radial multi-leaf-plate metal solar thermotube |
| CN104296396A (en) * | 2014-10-29 | 2015-01-21 | 武汉鑫博茗科技发展有限公司 | Solar high-temperature heat collecting device |
| CN105783286A (en) * | 2016-04-30 | 2016-07-20 | 福建省茂盛建设工程有限公司 | Novel through evacuated collector tube and solar air heat collecting system assembled through novel through evacuated collector tube |
-
1997
- 1997-10-30 CN CN97119979A patent/CN1216817A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002039005A1 (en) * | 2000-10-18 | 2002-05-16 | Hongchuan Ge | A joint for connecting a metal tube and a glass tube and its use in vacuum heat collecting tube system of solar energy |
| CN100362291C (en) * | 2005-09-30 | 2008-01-16 | 张耀明 | Solar high-temperature vacuum pipe |
| CN100398937C (en) * | 2007-02-14 | 2008-07-02 | 江苏桑夏太阳能产业有限公司 | Non-contact solar heat collector |
| CN102155804A (en) * | 2010-02-11 | 2011-08-17 | 吴丹 | Integral and radial multi-leaf-plate metal solar thermotube |
| CN104296396A (en) * | 2014-10-29 | 2015-01-21 | 武汉鑫博茗科技发展有限公司 | Solar high-temperature heat collecting device |
| CN105783286A (en) * | 2016-04-30 | 2016-07-20 | 福建省茂盛建设工程有限公司 | Novel through evacuated collector tube and solar air heat collecting system assembled through novel through evacuated collector tube |
| CN105783286B (en) * | 2016-04-30 | 2018-12-21 | 福建省茂盛建设工程有限公司 | Straight-through vacuum thermal-collecting tube and the solar air heat collection system assembled by it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |