CN204301342U - Glass enclosure tube reflecting condensation vacuum solar collector tubes - Google Patents

Glass enclosure tube reflecting condensation vacuum solar collector tubes Download PDF

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Publication number
CN204301342U
CN204301342U CN201420615498.8U CN201420615498U CN204301342U CN 204301342 U CN204301342 U CN 204301342U CN 201420615498 U CN201420615498 U CN 201420615498U CN 204301342 U CN204301342 U CN 204301342U
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tube
glass enclosure
flat metal
solar collector
hook
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CN201420615498.8U
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Chinese (zh)
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江伦
罗兰·威斯顿
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems

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Abstract

The flat metal tube that the utility model relates to a kind of multiple flow passages is absorber, and glass enclosure tube doubles as the condensing evacuated solar collector pipe of non-tracking of reflecting condensation body, the top printing opacity of glass enclosure tube, and the outer surface of bottom is coated with reflective film; Form several runner arranged along its length in described flat metal tube, one end soldering of this flat metal tube has connection thermal-collecting tube, other end soldering on heat transfer mechanism, described runner be connected thermal-collecting tube and heat transfer mechanism all communicates.The utility model has the advantages that: in 100 DEG C-200 DEG C, temperature solar heat utilization has higher efficiency; Reflective function maintains a long-term stability, and production cost is lower.

Description

Glass enclosure tube reflecting condensation vacuum solar collector tubes
Technical field
The utility model relates to a kind of glass enclosure tube reflecting condensation vacuum solar collector tubes, belongs to solar utilization technique.
Background technology
The solar energy heat collection pipe of solar thermal utilization needs to use low-concentration structure usually, to have higher conversion efficiency when middle temperature works.
A kind of double-layer glass tube solar energy light gathering and heat collecting pipe has been invented by Schott company of Germany, see shown in accompanying drawing 1, by direct plating on the inner surface 2 of Circular glass outer tube 1 the latter half with silver-colored reflective membrane 3, another diameter is that the circular glass pipe of outer glass pipe radius is managed as in absorber, core shift 4 is placed in outer 1 pipe of glass, its optically focused smaller (C=0.6), still be limited to low temperature to use, Schott company stopped producing this product in 2007, Huang Ming Sunpower Corp. of China production and sales like product, during use, glass inner tube is directly leaked water, glass tube is not withstand voltage and easily burst.
Summary of the invention
For overcoming the defect of prior art, the utility model provides a kind of glass enclosure tube reflecting condensation vacuum solar collector tubes, the technical solution of the utility model is: a kind of glass enclosure tube reflecting condensation vacuum solar collector tubes, comprise a glass enclosure tube and be arranged on the flat metal tube in glass enclosure tube, vacuumize in this glass enclosure tube, one end closure, the other end is provided with end cap; Form several runner arranged along its length in described flat metal tube, one end soldering of this flat metal tube has connection thermal-collecting tube, other end soldering on heat transfer mechanism, described runner be connected thermal-collecting tube and heat transfer mechanism all communicates; The cross section first half of described glass enclosure tube is that semicircle Huo Ban Elliptical is circular, and Lower Half is composite parabolic; The appearance of described composite parabolic deposits reflective film, and the outer side covers of described reflective film has protective paint.
The copper pipe that described heat transfer mechanism comprises hook-type thermal-collecting tube and is communicated with hook-type thermal-collecting tube, described flat metal tube is welded on the side of hook-type thermal-collecting tube, one end of this hook-type thermal-collecting tube is closed, and one end of the other end and copper pipe welds together, and the other end of described copper pipe passes end cap to outside; The feed tube cover inner coaxial tube formed at copper pipe and hook-type thermal-collecting tube a feed tube is set, periphery close to feed tube liquid outlet is provided with a shading ring, several runner is divided into the feed liquor runner of bottom and the backflow runner on top by described shading ring, and the backflow runner on top communicates with the region between feed tube sleeve pipe and feed tube; The feed liquor runner of bottom communicates with feed tube.
Described heat transfer mechanism comprises hook-type thermal-collecting tube and condenser pipe, and described flat metal tube is welded on the side of hook-type thermal-collecting tube, and one end of this hook-type thermal-collecting tube is closed, and one end of the other end and condenser pipe welds together, and communicates with condenser pipe; The other end of this condenser pipe is closed and is positioned at the outside of end cap, and the weld zone of described condenser pipe and hook-type pipe is positioned at the inner side of end cap.
The daylighting area of glass enclosure tube and the ratio of flat metal tube exterior surface area are focusing ratio C, 1.05≤C≤1.6, and the cross section of glass enclosure tube is now in falling pyriform.
The daylighting area of glass enclosure tube and the ratio of flat metal tube exterior surface area are focusing ratio C, 1≤C < 1.05, and the cross section of glass enclosure tube is now rounded.
Described flat metal tube is aluminum multiple flow passages flat tube.
The bottom of described flat metal tube and the spacing of glass enclosure tube inner surface are L, 0 < L≤1.5mm.
Selective absorption plating is coated with in the outside of flat metal tube.
Described end cap adopts kovar alloy to be made.
The utility model has the advantages that:
1, in 100 DEG C-200 DEG C, temperature solar heat utilization has higher efficiency; Reflective mirror property retention is steady in a long-term, and production cost is lower;
2, because metallic aluminium flat tube of the present utility model and the reflecting surface by composite parabolic (CPC) optical design matched with it and transmission plane define down pyriform or circle, the Production of Glass in this cross section can draw in production process at glass tube once to be implemented, thus for being that matrix plates reflexed light film outward and lays the first stone with glass tube; Realize CPC reflective surface and the integration of vacuum glass vestlet, improve optical efficiency, reduce cost.The outer glass tube plating reflective membrane more existing glass inner tube plating reflective membrane technique simultaneously innovated is more simple.
3, the utility model proposes the absorber of multiple flow passages metallic aluminium flat tube (MCT) as CPC shape glass tube of use low cost, and devise single flow (embodiment 1) and the concrete structure of heat pipe-type (embodiment 2), arrange at the port of export simultaneously and connect a bit of copper pipe, avoid a difficult problem for kovar alloy end cap and the reliable vacuum welding of aluminum pipe, making to substitute copper pipe manufacture glassy metal vacuum solar collector tubes with aluminium flat conduit absorber becomes possibility.
Accompanying drawing explanation
Fig. 1 is the condensing evacuated solar collector pipe structural representation of full glass tube of the prior art;
Fig. 2 is the sectional view of Fig. 1;
Fig. 3 is the structural representation of the first embodiment of the present utility model;
Fig. 4 is the sectional view of Fig. 3;
The structural representation of Fig. 5 the second embodiment of the present utility model;
Fig. 6 is the sectional view of Fig. 5.
Detailed description of the invention
Further describe the utility model below in conjunction with specific embodiment, advantage and disadvantage of the present utility model will be more clear along with description.But these embodiments are only exemplary, do not form any restriction to scope of the present utility model.It will be understood by those skilled in the art that and do not departing under spirit and scope of the present utility model and can modify to the details of technical solutions of the utility model and form or replace, but these amendments and replacement all fall in protection domain of the present utility model.
See Fig. 2 to Fig. 6, the utility model relates to a kind of glass enclosure tube reflecting condensation vacuum solar collector tubes, the flat metal tube 1 comprising a glass enclosure tube 2 and be arranged in glass enclosure tube 2, and vacuumize in this glass enclosure tube 2, one end closure, the other end is provided with end cap 3; Form several runner 111 arranged along its length in described flat metal tube 1, one end soldering of this flat metal tube 1 has and connects thermal-collecting tube 12, other end soldering on heat transfer mechanism, described runner 111 be connected thermal-collecting tube and heat transfer mechanism all communicates.
As shown in Figure 3 to Figure 4, described heat transfer mechanism adopts single flow mode to conduct heat, it copper pipe 15 comprising hook-type thermal-collecting tube 13 and be communicated with hook-type thermal-collecting tube 13, described flat metal tube 1 is welded on the side of hook-type thermal-collecting tube 13, one end of this hook-type thermal-collecting tube 13 is closed, one end of the other end and copper pipe 15 welds together, and the other end of described copper pipe 15 passes end cap 3 to outside; The feed tube cover inner coaxial tube formed at copper pipe 15 and hook-type thermal-collecting tube 13 a feed tube 14 is set, a shading ring 141 is provided with in the periphery close to feed tube liquid outlet, several runner is divided into the feed liquor runner 18 of bottom and the backflow runner 19 on top by described shading ring 141, and the backflow runner on top communicates with the region 16 between feed tube sleeve pipe and feed tube; The feed liquor runner of bottom communicates with feed tube 14.
The operation principle of this heat transfer structure is: heat-transfer working medium flows into from feed tube 14, the bottom feed liquor runner of flat metal tube is flow to below shading ring 141, turn back at connection thermal-collecting tube 12, backflow runner through the top of flat metal tube 1 flows into the region 16 between feed tube sleeve pipe and feed tube, then flow out outside feed tube sleeve pipe, absorbed solar thermal energy is transmitted out.
The cross section first half 21 of described glass enclosure tube 2 is that semicircle Huo Ban Elliptical is circular, and Lower Half 22 is composite parabolic; Adopt large lighting angle, a part is intercepted under the condition of not losing very large focusing ratio, may be up to 1.6 because focusing ratio C is more than or equal to 1.05, now glass enclosure tube cross section is in falling pyriform, along discord glass enclosure tube contact heat radiation under flat metal tube, and be not more than 1.5mm, in case leak-stopping light loss with glass tube inner surface spacing.
Focusing ratio C mentioned by the application is the daylighting area of glass enclosure tube and the ratio of flat metal tube exterior surface area.
The reflective film 221 of the outer surface Direct precipitation high reflectance of glass enclosure tube 2 Lower Half, can adopt the method that magnetron sputtering is aluminized, also can be silver-plated by known silver mirror reaction method, covering protection paint 222 thereafter; Described flat metal tube is aluminum multiple flow passages flat tube; Selective absorption plating is coated with in the outside of flat metal tube; Described end cap 3 adopts kovar alloy to be made.
See Fig. 5 to Fig. 6, be from the different of embodiment 1, flat metal tube, as the evaporation endothermic pipe of heat pipe, is filled with heat-transfer working medium in it, such as acetone, replace the return-flow structure adopting embodiment 1, described heat transfer mechanism adopts heat pipe-type mode to conduct heat, and it comprises hook-type thermal-collecting tube 13 and condenser pipe 15, described flat metal tube 1 is welded on the side of hook-type thermal-collecting tube 13, one end of this hook-type thermal-collecting tube is closed, and one end of the other end and condenser pipe welds together, and communicates with condenser pipe; The other end of this condenser pipe is closed and is positioned at the outside of end cap, and the weld zone of described condenser pipe and hook-type pipe is positioned at the inside region 151 of end cap, and condenser pipe 17 is copper pipe, and copper pipe is easy to weld with kovar alloy end cap 3; Be more than or equal to 1.0 when focusing ratio and be less than 1.05, rounded by the glass enclosure tube cross section matched with flat metal tube of CPC Theoretical Design.

Claims (9)

1. a glass enclosure tube reflecting condensation vacuum solar collector tubes, comprise a glass enclosure tube and be arranged on the flat metal tube in glass enclosure tube, vacuumize in this glass enclosure tube, one end closure, the other end is provided with end cap; It is characterized in that, form several runner arranged along its length in described flat metal tube, one end soldering of this flat metal tube has connection thermal-collecting tube, other end soldering on heat transfer mechanism, described runner be connected thermal-collecting tube and heat transfer mechanism all communicates; The cross section first half of described glass enclosure tube is that semicircle Huo Ban Elliptical is circular, and Lower Half is composite parabolic; The appearance of described composite parabolic deposits reflective film, and the outer side covers of described reflective film has protective paint.
2. glass enclosure tube reflecting condensation vacuum solar collector tubes according to claim 1, it is characterized in that, described heat transfer mechanism adopts single flow mode to conduct heat, it copper pipe comprising hook-type thermal-collecting tube and be communicated with hook-type thermal-collecting tube, described flat metal tube is welded on the side of hook-type thermal-collecting tube, one end of this hook-type thermal-collecting tube is closed, and one end of the other end and copper pipe welds together, and the other end of described copper pipe passes end cap to outside; The feed tube cover inner coaxial tube formed at copper pipe and hook-type thermal-collecting tube a feed tube is set, periphery close to feed tube liquid outlet is provided with a shading ring, several runner is divided into the feed liquor runner of bottom and the backflow runner on top by described shading ring, and the backflow runner on top communicates with the region between feed tube sleeve pipe and feed tube; The feed liquor runner of bottom communicates with feed tube.
3. glass enclosure tube reflecting condensation vacuum solar collector tubes according to claim 1, it is characterized in that, described heat transfer mechanism adopts heat pipe-type mode to conduct heat, it comprises hook-type thermal-collecting tube and condenser pipe, described flat metal tube is welded on the side of hook-type thermal-collecting tube, one end of this hook-type thermal-collecting tube is closed, and one end of the other end and condenser pipe welds together, and communicates with condenser pipe; The other end of this condenser pipe is closed and is positioned at the outside of end cap, and the weld zone of described condenser pipe and hook-type pipe is positioned at the inner side of end cap.
4. glass enclosure tube reflecting condensation vacuum solar collector tubes according to claim 1, it is characterized in that, the daylighting area of glass enclosure tube and the ratio of flat metal tube exterior surface area are focusing ratio C, 1.05≤C≤1.6, and the cross section of glass enclosure tube is now in falling pyriform.
5. glass enclosure tube reflecting condensation vacuum solar collector tubes according to claim 1, it is characterized in that, the daylighting area of glass enclosure tube and the ratio of flat metal tube exterior surface area are focusing ratio C, 1≤C < 1.05, and the cross section of glass enclosure tube is now rounded.
6. glass enclosure tube reflecting condensation vacuum solar collector tubes according to claim 1, is characterized in that, described flat metal tube is aluminum multiple flow passages flat tube.
7. glass enclosure tube reflecting condensation vacuum solar collector tubes according to claim 1, is characterized in that, the bottom of described flat metal tube and the spacing of glass enclosure tube inner surface are L, 0 < L≤1.5mm.
8. glass enclosure tube reflecting condensation vacuum solar collector tubes according to claim 1, is characterized in that, be coated with selective absorption plating in the outside of flat metal tube.
9. glass enclosure tube reflecting condensation vacuum solar collector tubes according to claim 1, is characterized in that, described end cap adopts kovar alloy to be made.
CN201420615498.8U 2014-10-23 2014-10-23 Glass enclosure tube reflecting condensation vacuum solar collector tubes Active CN204301342U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420615498.8U CN204301342U (en) 2014-10-23 2014-10-23 Glass enclosure tube reflecting condensation vacuum solar collector tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420615498.8U CN204301342U (en) 2014-10-23 2014-10-23 Glass enclosure tube reflecting condensation vacuum solar collector tubes

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CN204301342U true CN204301342U (en) 2015-04-29

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106091420A (en) * 2016-06-16 2016-11-09 昆山诃德新能源科技有限公司 Non-tracking combined light gathering solar pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106091420A (en) * 2016-06-16 2016-11-09 昆山诃德新能源科技有限公司 Non-tracking combined light gathering solar pipe

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