CN102242976A - Solar heat collector - Google Patents
Solar heat collector Download PDFInfo
- Publication number
- CN102242976A CN102242976A CN2011101967827A CN201110196782A CN102242976A CN 102242976 A CN102242976 A CN 102242976A CN 2011101967827 A CN2011101967827 A CN 2011101967827A CN 201110196782 A CN201110196782 A CN 201110196782A CN 102242976 A CN102242976 A CN 102242976A
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- China
- Prior art keywords
- layer metal
- heat
- metal tube
- tube
- outer layer
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- 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.)
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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
Abstract
The invention relates to a solar heat collector which comprises a heat exchange tube driven by a solar tracker and a light-condensing reflector, wherein the heat exchange tube consists of an inner-layer metal tube and an outer-layer metal tube, the inner-layer metal tube is packed in the outer-layer metal tube, a vacuum darkroom cavity is formed by sealing the two ends of the outer-layer metal tube by virtue of heat-insulation end caps, the two ends of the inner-layer metal tube extend out of the outer-layer metal tube from the heat-insulation end caps, a heat-absorbing layer is arranged on the exterior of the inner-layer metal tube, and a flowing heat exchange medium is arranged at the interior of the inner-layer metal tube; the cross section of the light-condensing reflector is a curved face, a heat exchange tube is installed on the focus axis of the curved face of the light-condensing reflector, and a light incident window is arranged on the outer-layer metal tube facing the light-condensing reflector; and the light incident window is equipped with a support frame, the light incident window and the support frame are fixed into a whole, transparent glass is embedded in the support frame in a sealing manner, and a reflecting film is covered on the metal inner wall of the outer-layer metal tube.
Description
Technical field
The present invention relates to a kind of solar thermal collector.
Background technology
Solar energy is a kind of high efficient energy sources, and can not cause environmental pollution, and along with development of science and technology, the application of solar energy is more and more wider.
In many Application of Solar Energy field, solar thermal collector has focusing solar thermal collector than early being used by people, and the endothermic solar heat collector is also arranged, and uses more extensive with the endothermic solar heat collector especially.
In the endothermic solar heat collector, having a kind of is to adopt efficient endothermic tube, is the glass blind pipe suit by two different diameters, and beginning end flame burns and melts sealing-in and vacuumize and make.This heating tube, its glass tube that adopts transportation, install and the process used in very easily damage, and when installing owing to have the gap between pipe, the unit are heat absorption efficiency is descended.Also having a kind of is traditional flat-plate collector, and it mainly is the heat that absorbs the sun by the thermal-arrest plate, directly transmits one group of water pipe, makes the liquid in the water pipe obtain heat.This solar heat permutoid, though structure is simple, a large amount of heat energy that absorb scatter and disappear again by light penetrating panel, so efficient is not high.
No matter be which kind of heat collector, its solar heat permutoid all is to be exposed in the natural environment, in the conduction, tends to lose a part of part heat in the convection current of air, influences solar energy utilization rate.
How to improve solar energy utilization rate, be the long-term problem of paying close attention in this area always.According to the knowledge of the applicant, in solar thermal collector, heat-exchange tube is contained inside and outside bimetal pipe, the ectonexine metal tube is chamber, vacuum darkroom, does not appear in the newspapers at present.
Summary of the invention
The objective of the invention is to: the processing cost that exists at present solar heat permutoid, or the thermal efficiency is not high, or volume is excessive, or a series of problems such as composite assembly difficulty in using provide a kind of new solar thermal collector.
The object of the present invention is achieved like this: a kind of solar thermal collector, it is characterized in that solar collector comprises heat-exchange tube and the condenser mirror that solar tracking device drives, wherein:
A) heat-exchange tube is made up of inner layer metal pipe and outer layer metal tube, the inner layer metal pipe is wrapped in the outer layer metal tube, the outer layer metal tube two ends form chamber, vacuum darkroom by heat insulation end cap seal, outer layer metal tube is stretched out by heat insulation end cap in the two ends of inner layer metal pipe, the inner layer metal pipe is outward a heat-sink shell, and mobile heat exchange medium is arranged in the inner layer metal pipe;
B) cross section of condenser mirror is a curved surface, heat-exchange tube places on the focusing axis of condenser mirror mean camber, outer layer metal tube towards condenser mirror is provided with the light entrance window, the light entrance window is furnished with the support frame that is solidified as a whole, and sealing is installed with transparent glass in the described support frame;
C) be covered with reflectance coating on the metal inner surface of outer layer metal tube.
In the present invention, heat-exchange tube ectomesoderm metal tube diameter is 10 ~ 1000mm.
In the present invention, comprise an inner layer metal pipe in the heat-exchange tube at least, outer layer metal tube is all stretched out at the two ends of each inner layer metal pipe, or outer layer metal tube is stretched out by a metal tube respectively after converging in the two ends of each inner layer metal pipe.
In the present invention, be placed with getter in the chamber, described vacuum darkroom.
In the present invention, the vacuum in chamber, described vacuum darkroom is 1.33 * 10
-1~ 1.33 * 10
-5Pa.
The invention has the advantages that: because heat-exchange tube is by inner layer metal pipe and outer layer metal tube, the inner layer metal pipe is wrapped in the outer layer metal tube, the outer layer metal tube two ends form chamber, vacuum darkroom by heat insulation end cap seal, outer layer metal tube is stretched out by heat insulation end cap in the two ends of inner layer metal pipe, and the cross section of condenser mirror is a curved surface, heat-exchange tube places on the focusing axis of condenser mirror mean camber, outer layer metal tube towards condenser mirror is provided with the light entrance window, the light entrance window is furnished with the framework that is solidified as a whole, sealing is installed with transparent glass in the described framework, the energy that enters in the outer layer metal tube can only enter chamber, vacuum darkroom from the light entrance window by condenser mirror focusing back, carries out heat exchange by inner layer metal pipe and the heat exchange medium that flows; Owing to be covered with reflectance coating on the metal inner surface of outer layer metal tube, the infrared ray that obtains the inner layer metal pipe emission of heat projects behind the outer layer metal inside pipe wall again can bounce back inner layer metal pipe, reduces the loss to the outer layer metal tube radiation of heat that the inner layer metal pipe obtained; Owing to be placed with getter in the chamber, vacuum darkroom, can keep the vacuum in the chamber, reduce the heat conduction and the convection current that form between the ectonexine metal tube; Heat-exchange tube places on the focusing axis of condenser mirror mean camber, can guarantee that heat-exchange tube is put can obtain more solar energy; Be furnished with the support frame that is solidified as a whole on the light entrance window, provide possibility for sealing is installed with transparent glass.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the structural representation of the embodiment of heat-exchange tube among the present invention;
Fig. 3 is that the A-A of Fig. 2 is to the sectional structure schematic diagram.
Among the figure, 1, outer layer metal tube, 2, the inner layer metal pipe, 3, heat insulation end cap, 4, light injects window, 5, support frame, 6, reflectance coating, 7, heat-sink shell, 8, chamber, vacuum darkroom, 9, condenser mirror.
The specific embodiment
Accompanying drawing is 3 concrete structures that disclose the embodiment of the invention without limitation, and the invention will be further described below in conjunction with accompanying drawing.
As seen from Figure 1, solar collector comprises heat-exchange tube and the condenser mirror 9 that solar tracking device drives, and wherein, heat-exchange tube is made up of inner layer metal pipe 2 and outer layer metal tube 1, the cross section of condenser mirror 9 is a curved surface, and heat-exchange tube places on the focusing axis of condenser mirror 9 mean cambers.
By Fig. 2 Fig. 3 as seen, the inner layer metal pipe 2 of heat-exchange tube is wrapped in the outer layer metal tube 1, and outer layer metal tube 1 two ends form chamber, vacuum darkroom 8 by heat insulation end cap 3 sealings, are covered with reflectance coating 6 on the metal inner surface of outer layer metal tube 1; Outer layer metal tube 1 is stretched out by heat insulation end cap 3 in the two ends of inner layer metal pipe 2, is heat-sink shell 7 outside the inner layer metal pipe 2, and mobile heat exchange medium is arranged in the inner layer metal pipe 2.Outer layer metal tube 1 towards condenser mirror 9 is provided with light entrance window 4, and light entrance window 4 is furnished with the support frame 5 that is solidified as a whole, and sealing is installed with transparent glass in the described support frame 5.
During concrete enforcement, the diameter of heat-exchange tube ectomesoderm metal tube 1 can be 10 ~ 1000mm.At least comprise an inner layer metal pipe 2 in the heat-exchange tube, outer layer metal tube 1 is all stretched out at the two ends of each inner layer metal pipe 2, or outer layer metal tube 1 is stretched out by a metal tube respectively after converging in the two ends of each inner layer metal pipe 2.
During concrete enforcement, can also be placed with getter in the chamber, vacuum darkroom 8.The vacuum in chamber, vacuum darkroom 8 can be 1.33 * 10
-1~ 1.33 * 10
-5Pa.
The course of work of the present invention is: after the present invention is assembled into integral body, solar tracking device by mature technology drives, follow sun operation and change operating angle, the curved surface that guarantees condenser mirror 9 is over against the sun, thereby guarantee that sunray reflect focalization point is entering chamber, vacuum darkroom 8 by the light entrance window 4 below the heat-exchange tube, and passed to heat exchange medium after 2 absorptions of inner layer metal pipe.The heat that radiation enters chamber, vacuum darkroom 8 can make heat-sink shell 7 temperature of inner layer metal pipe 2 raise (more than temperature rise to 450 degree), with inner layer metal pipe 2 in heat exchange medium exchange in, also can be to a large amount of infrared rays of external radiation, infrared ray projects the heat-sink shell 7 that is reflected back toward inner layer metal pipe 2 behind the reflecting layer 6 of outer layer metal tube 1 inwall again, again absorbed by heat-sink shell 7, have only a small amount of infrared ray may pass through the glass of light entrance window 4, after even a small amount of infrared ray passes through the glass of light entrance window 4, again can be by condenser mirror 9 chamber, reflected back vacuum darkroom 8 again, to directly scatter and disappear and existing outer tube is the heat collector infrared heat radiation of glass, the infrared heat radiation loss may reach more than the 10%--15% during high temperature.Because the present invention has solved the loss that traditional heat collector causes because of heat radiation preferably, and can avoid conduction, convection current in the chamber, vacuum darkroom 8, solar thermal utilization rate of the present invention is very high.
Claims (5)
1. a solar thermal collector is characterized in that, solar collector comprises heat-exchange tube and the condenser mirror that solar tracking device drives, wherein:
A) heat-exchange tube is made up of inner layer metal pipe and outer layer metal tube, the inner layer metal pipe is wrapped in the outer layer metal tube, the outer layer metal tube two ends form chamber, vacuum darkroom by heat insulation end cap seal, outer layer metal tube is stretched out by heat insulation end cap in the two ends of inner layer metal pipe, the inner layer metal pipe is outward a heat-sink shell, and mobile heat exchange medium is arranged in the inner layer metal pipe;
B) cross section of condenser mirror is a curved surface, heat-exchange tube places on the focusing axis of condenser mirror mean camber, outer layer metal tube towards condenser mirror is provided with the light entrance window, the light entrance window is furnished with the support frame that is solidified as a whole, and sealing is installed with transparent glass in the described support frame;
C) be covered with reflectance coating on the metal inner surface of outer layer metal tube.
2. solar thermal collector according to claim 1 is characterized in that, heat-exchange tube ectomesoderm metal tube diameter is 10 ~ 1000mm.
3. solar thermal collector according to claim 2, it is characterized in that, at least comprise an inner layer metal pipe in the heat-exchange tube, outer layer metal tube is all stretched out at the two ends of each inner layer metal pipe, or outer layer metal tube is stretched out by a metal tube respectively after converging in the two ends of each inner layer metal pipe.
4. according to the described solar thermal collector of one of claim 1 ~ 3, it is characterized in that described vacuum darkroom is placed with getter in the chamber.
5. solar thermal collector according to claim 4 is characterized in that, the vacuum in chamber, described vacuum darkroom is 1.33 * 10
-1~ 1.33 * 10
-5Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101967827A CN102242976A (en) | 2011-07-14 | 2011-07-14 | Solar heat collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101967827A CN102242976A (en) | 2011-07-14 | 2011-07-14 | Solar heat collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102242976A true CN102242976A (en) | 2011-11-16 |
Family
ID=44961153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101967827A Pending CN102242976A (en) | 2011-07-14 | 2011-07-14 | Solar heat collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102242976A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367999A (en) * | 2011-11-21 | 2012-03-07 | 朱雷 | High-efficiency solar heat collector |
| CN103912997A (en) * | 2014-03-30 | 2014-07-09 | 山东耀国光热科技股份有限公司 | Intermediate-temperature heat collector with capillary guide pipes |
| CN108571830A (en) * | 2018-02-05 | 2018-09-25 | 北京石油化工学院 | Solar energy heating radiator and electricity generation system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5572760A (en) * | 1978-11-24 | 1980-05-31 | Agency Of Ind Science & Technol | Solar energy collector |
| JP2002115917A (en) * | 2000-10-12 | 2002-04-19 | Kokusai Gijutsu Kaihatsu Co Ltd | Solar heat energy collector |
| CN2886433Y (en) * | 2005-08-17 | 2007-04-04 | 江苏科技大学 | Inner tube through type solar heat collector |
| CN101377357A (en) * | 2008-09-18 | 2009-03-04 | 韩培洲 | Heat collector with heat adsorbing body in vacuum tube heated by lens and slot-shaped reflective mirror |
| JP2010203624A (en) * | 2009-02-27 | 2010-09-16 | Mitaka Koki Co Ltd | Trough type light collecting unit |
| CN201779880U (en) * | 2010-08-05 | 2011-03-30 | 苏州天宁换热器有限公司 | Solar collector |
| CN202149624U (en) * | 2011-07-14 | 2012-02-22 | 朱雷 | Solar heat collector |
-
2011
- 2011-07-14 CN CN2011101967827A patent/CN102242976A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5572760A (en) * | 1978-11-24 | 1980-05-31 | Agency Of Ind Science & Technol | Solar energy collector |
| JP2002115917A (en) * | 2000-10-12 | 2002-04-19 | Kokusai Gijutsu Kaihatsu Co Ltd | Solar heat energy collector |
| CN2886433Y (en) * | 2005-08-17 | 2007-04-04 | 江苏科技大学 | Inner tube through type solar heat collector |
| CN101377357A (en) * | 2008-09-18 | 2009-03-04 | 韩培洲 | Heat collector with heat adsorbing body in vacuum tube heated by lens and slot-shaped reflective mirror |
| JP2010203624A (en) * | 2009-02-27 | 2010-09-16 | Mitaka Koki Co Ltd | Trough type light collecting unit |
| CN201779880U (en) * | 2010-08-05 | 2011-03-30 | 苏州天宁换热器有限公司 | Solar collector |
| CN202149624U (en) * | 2011-07-14 | 2012-02-22 | 朱雷 | Solar heat collector |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367999A (en) * | 2011-11-21 | 2012-03-07 | 朱雷 | High-efficiency solar heat collector |
| CN103912997A (en) * | 2014-03-30 | 2014-07-09 | 山东耀国光热科技股份有限公司 | Intermediate-temperature heat collector with capillary guide pipes |
| CN108571830A (en) * | 2018-02-05 | 2018-09-25 | 北京石油化工学院 | Solar energy heating radiator and electricity generation system |
| CN108571830B (en) * | 2018-02-05 | 2023-05-26 | 北京石油化工学院 | Solar heat collecting and radiating device and power generation system |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111116 |