CN203298514U - Efficient solar vacuum tube collector - Google Patents
Efficient solar vacuum tube collector Download PDFInfo
- Publication number
- CN203298514U CN203298514U CN201320348519XU CN201320348519U CN203298514U CN 203298514 U CN203298514 U CN 203298514U CN 201320348519X U CN201320348519X U CN 201320348519XU CN 201320348519 U CN201320348519 U CN 201320348519U CN 203298514 U CN203298514 U CN 203298514U
- Authority
- CN
- China
- Prior art keywords
- tube
- outer tube
- solar vacuum
- glass outer
- wall
- 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
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Classifications
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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
Abstract
The utility model relates to an efficient solar vacuum tube collector which structurally comprises a glass outer tube and an inner tube. The inner tube is sleeved with the glass outer tube, the inner wall and the outer wall of the inner tube are coated with selective absorption coatings, an outer tube reflective film is arranged on the tube wall of the bottom face of the glass outer tube, and inner cavity reflective films which are symmetrically distributed are arranged at the central position of the outer tube reflective film on the bottom face of the glass outer tube. According to the efficient solar vacuum tube collector, the outer tube reflective film and the inner cavity reflective films are arranged, so that sunlight illuminating from the upper portion (including the slant upper portion) and with strong luminance is reflected to the shady face and the light shielding face of the inner tube, the heat collecting area of the inner tube can be increased to more than 95%, and therefore, under the equal condition, compared with an existing solar vacuum tube collector, the efficient solar vacuum tube collector can improve heat collecting and heating efficiency by one time, and heating temperature can be increased by more than 30 DEG C.
Description
Technical field
The utility model relates to a kind of solar collection element, specifically a kind of high-efficiency solar vacuum heat collection pipe.
Background technology
Solar vacuum heat-collecting pipe is the main core component that solar thermal utilization gathers sunshine.Solar energy heat collection pipe generally comprises glass outer tube and inner tube, on the outer wall of inner tube, is coated with coating for selective absorption, between the inner and outer pipe interlayer by aspirating into the high vacuum state.When sunshine shines on the absorber coatings of inner tube by outer glass pipe, be converted to heat energy, the heat-transfer fluid in the heating inner tube.Although the outer tube of existing solar vacuum heat-collecting pipe is transparent glass material, but the sunshine that irradiates on inner pipe by outer tube only has 50% absorptivity, namely always there is on inner pipe the shady face of half not have light to irradiate, reduce thus the ability of inner tube absorption solar radiation, made the heat absorption efficiency of solar energy heat collection pipe not fully played.
The utility model content
The purpose of this utility model just is to provide a kind of high-efficiency solar vacuum heat collection pipe, the problem that does not have light to irradiate to solve the inner tube shady face.
The utility model is achieved in that a kind of high-efficiency solar vacuum heat collection pipe, comprise glass outer tube and inner tube, described inner tube is sleeved in described glass outer tube, on the inwall of described inner tube or outer wall, be coated with coating for selective absorption, on the tube wall of the bottom surface of described glass outer tube, be provided with the outer tube reflective membrane, at the center position of the described outer tube reflective membrane of described glass outer tube bottom surface, be provided with symmetrical inner chamber reflectance coating.
Described outer tube reflective membrane is laid on the semi-circumference tube wall of the inwall of described glass outer tube or outer wall.
Described inner chamber reflectance coating is laid in the outer surface that cross section is lambdoid reflection frame, and described reflection frame is fixed on the inwall of described glass outer tube.
The cross section of described inner chamber reflectance coating is herringbone, is laid on the tube wall of two glass intubate; Two described glass intubate axially are plugged on the gap between described glass outer tube and described inner tube side by side.Utilize the glass intubate that the inner chamber reflectance coating is set, can make the cost of manufacture of solar vacuum heat-collecting pipe be down to minimum.
The caliber of described glass intubate is half of difference of the external diameter of the internal diameter of described glass outer tube and described inner tube.
Due to the intensity of illumination of the sunshine in initial rise and western lower time relatively a little less than, thermal transition efficiency is not high, so the utility model is the solar energy equipment that a kind of sunshine that utilizes the high irradiation intensity period carries out the High Efficiency Thermal conversion.
The utility model is by arranging the outer tube reflective membrane on the glass outer tube, the inner chamber reflectance coating is set between glass outer tube and inner tube, can irradiate from top, (comprising oblique top) and the strong sunshine of illumination reflexes to shady face and the shading surface of inner tube, what can make thus inner tube adopts that hot side is long-pending to be increased to more than 95%, like this, under equal conditions, the utility model than original solar vacuum heat-collecting pipe adopt heat, the efficiency of heating surface can double, heating-up temperature can improve more than 30 ℃.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, coaxial cross-under has inner tube 2 in glass outer tube 1, on inner tube 2, is utilizing the airless spraying technology metal material that will absorb heat to be sprayed on the outer wall of inner tube 2, the coating for selective absorption on the formation inner tube.At the bottom surface of glass outer tube wall inboard airless spraying layer of metal film, form outer tube reflective membrane 4.Outer tube reflective membrane 4 can account for half (also appropriate increase and decrease can be arranged) of glass outer tube inner peripheral wall.
In the bottom of glass outer tube 1 and the gap between inner tube 2, axially be plugged with side by side two glass intubate 3, the caliber of two glass intubate 3 is identical, approximately half of difference of the external diameter of the internal diameter of glass outer tube 1 and inner tube 2, two glass intubate 3 are contacted respectively with the tube wall of inner tube 2 with glass outer tube 1, and make to be in contact with one another between two glass intubate 3.The inboard airless spraying layer of metal of tube wall film two glass intubate 3, form inner chamber reflectance coating 5; Inner chamber reflectance coating 5 is positioned at the center position of the outer tube reflective membrane 4 of glass outer tube 1 bottom surface.Inner chamber reflectance coating 5 can account for 1/4 of glass intubate 3 inner peripheral walls, and the inner chamber reflectance coating 5 in two glass intubate 3 synthesizes cross section and is lambdoid symmetrical reflecting surface.
The utility model also can be fixed a cross section on the inwall of glass outer tube 1 be lambdoid reflection frame, and inner chamber reflectance coating 5 is laid on the outer surface of this reflection frame.Outer tube reflective membrane 4 in the utility model and inner chamber reflectance coating 5 also can adopt the modes such as metallic film attaching to arrange.
In the time of in horizontal 20 ° of-160 ° of scopes are arrived in sunrise, a part of sunshine shines directly on the side to light at inner tube 2 tops by glass outer tube 1; Part solar irradiation is mapped on the outer tube reflective membrane 4 on glass outer tube 1, through outer tube reflective membrane 4, reflexes on the shady face of inner tube 2; Part solar irradiation is mapped on the outer tube reflective membrane 4 on glass outer tube 1, through the secondary reflection of outer tube reflective membrane 4 and inner chamber reflectance coating 5, shines on the shady face or shading surface of inner tube 2; Some sunshine (when the rise angle is suitable) is to shine directly on inner chamber reflectance coating 5 by the space between glass outer tube 1 and inner tube 2, after the secondary reflection of inner chamber reflectance coating 5 and outer tube reflective membrane 4, shine on the shady face or shading surface of inner tube 2 again.In a word, by the setting of outer tube reflective membrane 4 and inner chamber reflectance coating 5, the inner tube illuminating area of solar vacuum heat-collecting pipe is increased to more than 95%, improve thus heat exchange efficiency.
Claims (5)
1. high-efficiency solar vacuum heat collection pipe, comprise glass outer tube and inner tube, described inner tube is sleeved in described glass outer tube, on the inwall of described inner tube or outer wall, be coated with coating for selective absorption, it is characterized in that, on the tube wall of the bottom surface of described glass outer tube, be provided with the outer tube reflective membrane, at the center position of the described outer tube reflective membrane of described glass outer tube bottom surface, be provided with symmetrical inner chamber reflectance coating.
2. high-efficiency solar vacuum heat collection pipe according to claim 1, is characterized in that, described outer tube reflective membrane is laid on the semi-circumference tube wall of the inwall of described glass outer tube or outer wall.
3. high-efficiency solar vacuum heat collection pipe according to claim 1 and 2, is characterized in that, described inner chamber reflectance coating is laid in the outer surface that cross section is lambdoid reflection frame, and described reflection frame is fixed on the inwall of described glass outer tube.
4. high-efficiency solar vacuum heat collection pipe according to claim 1 and 2, is characterized in that, the cross section of described inner chamber reflectance coating is herringbone, is laid on the tube wall of two glass intubate; Two described glass intubate axially are plugged on the gap between described glass outer tube and described inner tube side by side.
5. high-efficiency solar vacuum heat collection pipe according to claim 4, is characterized in that, the caliber of described glass intubate is half of difference of the external diameter of the internal diameter of described glass outer tube and described inner tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320348519XU CN203298514U (en) | 2013-06-18 | 2013-06-18 | Efficient solar vacuum tube collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320348519XU CN203298514U (en) | 2013-06-18 | 2013-06-18 | Efficient solar vacuum tube collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203298514U true CN203298514U (en) | 2013-11-20 |
Family
ID=49574519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320348519XU Expired - Fee Related CN203298514U (en) | 2013-06-18 | 2013-06-18 | Efficient solar vacuum tube collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203298514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727691A (en) * | 2013-12-25 | 2014-04-16 | 广西吉宽太阳能设备有限公司 | Solar vacuum tube |
-
2013
- 2013-06-18 CN CN201320348519XU patent/CN203298514U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727691A (en) * | 2013-12-25 | 2014-04-16 | 广西吉宽太阳能设备有限公司 | Solar vacuum tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20150618 |
|
| EXPY | Termination of patent right or utility model |