CN107166755A - Secondary condensation face strengthens fresnel reflecting mirror line-focusing solar collection device - Google Patents
Secondary condensation face strengthens fresnel reflecting mirror line-focusing solar collection device Download PDFInfo
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- CN107166755A CN107166755A CN201710352005.4A CN201710352005A CN107166755A CN 107166755 A CN107166755 A CN 107166755A CN 201710352005 A CN201710352005 A CN 201710352005A CN 107166755 A CN107166755 A CN 107166755A
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- reflecting mirror
- fresnel reflecting
- thermal
- collection device
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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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Abstract
Strengthen fresnel reflecting mirror line-focusing solar collection device, including a concentrator and thermal-collecting tube the present invention relates to a kind of secondary condensation face, No. one time concentrator is fresnel reflecting mirror, and the fresnel reflecting mirror has focal line；Thermal-collecting tube is located at the focal line of fresnel reflecting mirror；Support；Secondary condenser is parabolic mirror or fresnel reflecting mirror, and thermal-collecting tube is located between secondary condenser and a concentrator, and is on the focal line of secondary condenser, and secondary condenser is supported by support.The line-focusing solar collection device that the present invention is provided, it is additionally arranged secondary condenser, heat collector is located between secondary condenser and a concentrator, and be on the focal line of secondary condenser, the sunshine of heat collector can be will transmit through, a concentrator is reflexed to again, heat collector is being gathered again, few, collecting efficiency height is lost in light stream.
Description
Technical field
Strengthen fresnel reflecting mirror line-focusing solar collection device the present invention relates to a kind of secondary condensation face, and in particular to
A kind of solar collecting device of photothermal conversion efficiency high.
Background technology
Solar energy optical-thermal path for transformation is broadly divided into direct absorption and indirectly absorption.Direct absorption is situated between using heat-carrying
Upright to connect absorption solar radiation, medium temperature is improved, and realizes photothermal conversion；And absorption then utilization light-absorbing coating absorbs indirectly
Solar radiation, heat transfer, so as to improve medium temperature, realizes photothermal conversion to heat-carrying agent after coating temperature rise.Both
Respectively there are use and research case.Compared with indirect absorption technology route, the thermal transition of direct absorption solar energy is without heat absorption
Coating, is conducive to the durability of heat collector；Heat-carrying agent internal temperature is uniform simultaneously, reduces stress to brokenization of structure, can drop
Low manufacture and maintenance cost.Of the present invention is the technology path of direct absorption.
At present, the solar thermal collector of direct absorption mainly has several technical schemes, is mainly reflected in for light path
Focus on and control, (dish-style is gathered for such as line optically focused (slot type parabolic concentration face, compound parabolic caustic surface, Fresnel lens) and point optically focused
Smooth surface), solar tracking etc..
The Technological improvement plan of direct absorption is implemented primarily directed to the focusing ratio of light incident path is improved, different
Its focusing ratio of the concentrator of type has very big difference：The focusing ratio scope of rotary paraboloid light-gathering heat collector is very high, and about 500
To 3000；The focusing ratio scope about 20 to 80 of parabolic-cylinder light heat collector；The optically focused of linear Fresnel lens concentrating collector
Than scope about 6 to 30；The focusing ratio scope of circular Fresnel lens concentrating collector is higher, and about 100 to 1000；Linear phenanthrene alunite
The focusing ratio scope about 15 to 50 of ear reflex mirror concentrating collector.Therefore, combined using different concentrators or concentrator, device
Also there is larger difference for the collection efficiency of light.This patent is collected and utilized mainly for the light of the part,
So as to improve optics/photo-thermal efficiency of device.
The content of the invention
The technical problem to be solved in the present invention is：It is higher in order to solve existing middle temperature solar heat collector unit cost,
And the problem of collecting efficiency is low, receives the invention provides a kind of secondary condensation face enhancing fresnel reflecting mirror line-focusing solar
Acquisition means, are additionally arranged secondary condenser on the basis of existing technology, and the secondary condenser is parabolic mirror or Fresnel
Speculum, thermal-collecting tube is located between secondary condenser and a concentrator, and is on the focal line of secondary condenser, can be by
Through the sunshine of thermal-collecting tube, a concentrator is reflexed to again, is gathering thermal-collecting tube again, few, collecting efficiency is lost in light stream
It is high.
The technical solution adopted for the present invention to solve the technical problems is：A kind of secondary condensation face strengthens fresnel reflecting mirror
Line-focusing solar collection device, including：
Heat collector, heat collector includes a concentrator and thermal-collecting tube, and a concentrator is fresnel reflecting mirror, the Fresnel
Speculum has focal line；Thermal-collecting tube is located at the focal line of fresnel reflecting mirror, and carrying energy absorbent medium；
Support, the support is used to support a concentrator and thermal-collecting tube；
Also include secondary condenser, the secondary condenser is parabolic mirror or fresnel reflecting mirror, and thermal-collecting tube is located at
Between secondary condenser and a concentrator, and it is on the focal line of secondary condenser, secondary condenser is supported by support.
Specifically, above-mentioned thermal-collecting tube is straight type pipe, and its cross section is circular, ellipse or flat square.
Specifically, above-mentioned thermal-collecting tube is vacuum tube, including outer tube and inner tube, the interlayer between outer tube and inner tube
For vacuum, inner tube carrying energy absorbent medium.
Specifically, above-mentioned outer tube and inner tube are light-transmission tube.
Specifically, above-mentioned outer tube material is glass, PMMA or PC.
Specifically, above-mentioned inner tube material is glass, PMMA or PC.
Specifically, in addition to solar energy tracking device.
The beneficial effects of the invention are as follows：
(1) fresnel reflecting mirror line-focusing solar collection device is strengthened the invention provides a kind of secondary condensation face,
Secondary condenser is additionally arranged on the basis of prior art, the secondary condenser is parabolic mirror or fresnel reflecting mirror, collection
Heat pipe is located between secondary condenser and a concentrator, and is on the focal line of secondary condenser, can will transmit through thermal-arrest
The sunshine of pipe, by reflexing to again on a concentrator for secondary condenser, is gathering thermal-collecting tube, light stream is lost again
Few, collecting efficiency is high.
(2) fresnel reflecting mirror line-focusing solar collection device is strengthened the invention provides a kind of secondary condensation face, outside
Layer is managed and inner tube is light-transmission tube, and the light after being focused on through fresnel reflecting mirror can be made to be absorbed by thermal-collecting tube, unabsorbed
Light can reach secondary condenser through thermal-collecting tube, change into directional light, carry out secondary focusing by a concentrator, make it in thermal-arrest
Pipe is absorbed, and further increases the collecting efficiency of solar collecting device.
(3) fresnel reflecting mirror line-focusing solar collection device is strengthened the invention provides a kind of secondary condensation face,
Secondary condenser is additionally arranged on the basis of prior art, the erosion to thermal-collecting tube such as dust storm, sleet can be effectively prevented, effectively prolong
The service life of thermal-collecting tube has been grown, the service life of solar collecting device is extended.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the parabolic mirror enhancing fresnel reflecting mirror line-focusing solar collection device of the embodiment of the present invention 1
Light path schematic diagram；
Fig. 2 is the parabolic mirror enhancing fresnel reflecting mirror line-focusing solar collection device of the embodiment of the present invention 1
Structural representation；
Fig. 3 is the fresnel reflecting mirror enhancing fresnel reflecting mirror line-focusing solar collection device of the embodiment of the present invention 1
Light path schematic diagram；
Fig. 4 is the fresnel reflecting mirror enhancing fresnel reflecting mirror line-focusing solar collection device of the embodiment of the present invention 1
Structural representation；
Fig. 5 is a kind of secondary condensation face enhancing fresnel reflecting mirror line-focusing solar collection device thermal-collecting tube of the present invention
Partial structural diagram；
In figure：1. heat collector, No. 11. concentrators, 12. thermal-collecting tubes, 2. supports, 3. secondary condensers, 121. outer tubes,
122. inner tube, 4. solar energy tracking devices.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
Embodiment 1
As shown in Fig. 2 a kind of parabolic mirror enhancing fresnel reflecting mirror line-focusing solar collection device, including：
Heat collector 1, heat collector 1 includes a concentrator 11 and thermal-collecting tube 12, and a concentrator 11 is fresnel reflecting mirror,
The fresnel reflecting mirror has focal line；Thermal-collecting tube 12 is located at the focal line of fresnel reflecting mirror, and carrying energy absorption is situated between
Matter；
Support 2, the support 2 is used to support a concentrator 11 and thermal-collecting tube 12；
Also include secondary condenser 3, the secondary condenser 3 is parabolic mirror, and thermal-collecting tube 12 is located at secondary condenser 3
Between a concentrator 11, and it is on the focal line of secondary condenser 3, secondary condenser 3 is supported by support 2.
A kind of parabolic mirror enhancing fresnel reflecting mirror line-focusing solar collection device of the present invention, its light path is such as
Shown in Fig. 1, it is radiated at first on a concentrator 11 (fresnel reflecting mirror) in parallel rays, light is by a concentrator 11
Focusing, be gathered in thermal-collecting tube 12, the light transmitted through thermal-collecting tube 12 reaches secondary condenser 3, and secondary condenser 3 is by the light of receiving
Line is converted into directional light, is directly incident on a concentrator 11, is focused on again, until light is completely absorbed.
Embodiment 2
As shown in figure 4, a kind of fresnel reflecting mirror enhancing fresnel reflecting mirror line-focusing solar collection device, including：
Heat collector 1, heat collector 1 includes a concentrator 11 and thermal-collecting tube 12, and a concentrator 11 is fresnel reflecting mirror,
The fresnel reflecting mirror has focal line；Thermal-collecting tube 12 is located at the focal line of fresnel reflecting mirror, and carrying energy absorption is situated between
Matter；
Support 2, the support 2 is used to support a concentrator 11 and thermal-collecting tube 12；
Also include secondary condenser 3, the secondary condenser 3 is fresnel reflecting mirror, and thermal-collecting tube 12 is located at secondary condenser 3
Between a concentrator 11, and it is on the focal line of secondary condenser 3, secondary condenser 3 is supported by support 2.
A kind of fresnel reflecting mirror enhancing fresnel reflecting mirror line-focusing solar collection device of the present invention, its light path is such as
Shown in Fig. 3, it is radiated at first on a concentrator 11 (fresnel reflecting mirror) in parallel rays, light is by a concentrator 11
Focusing, be gathered in thermal-collecting tube 12, the light transmitted through thermal-collecting tube 12 reaches secondary condenser 3, and secondary condenser 3 is by the light of receiving
Line is converted into directional light, is directly incident on a concentrator 11, is focused on again, until light is completely absorbed.
In a kind of embodiment, thermal-collecting tube 12 is straight type pipe, and its cross section is circular, oval or flat side
Shape.When ellipse is in the section of thermal-collecting tube 12, plane where transverse is vertical with vertical incidence light；It is in the section of thermal-collecting tube 12
During flat square, plane where the long side of flat square is vertical with vertical incidence light.In this embodiment, thermal-collecting tube 12
Section is circle.
In a kind of embodiment, the solar collecting device also includes solar energy tracking device 4.It is primarily used to
Sunshine is tracked, solar collecting device is in optimal photothermal deformation state all the time.Its concrete form can be any existing
Some solar energy tracking devices, as long as tracking sunshine can be met.
In a kind of embodiment, as shown in figure 5, thermal-collecting tube 12 is vacuum tube, including outer tube 121 and inner tube
122, the interlayer between outer tube 121 and inner tube 122 is vacuum, the carrying energy absorbent medium of inner tube 122.
Specifically, outer tube 121 and inner tube 122 are light-transmission tube.
Preferably, the material of outer tube 121 is glass, PMMA or PC.
Preferably, the material of inner tube 122 is glass, PMMA or PC.
Using the above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (7)
1. a kind of secondary condensation face strengthens fresnel reflecting mirror line-focusing solar collection device, including：
Heat collector, heat collector includes a concentrator and thermal-collecting tube, and a concentrator is fresnel reflecting mirror, the Fresnel reflection
Mirror has focal line；Thermal-collecting tube is located at the focal line of fresnel reflecting mirror, and carrying energy absorbent medium；
Support, the support is used to support a concentrator and thermal-collecting tube；
It is characterized in that：Also include secondary condenser, the secondary condenser is parabolic mirror or fresnel reflecting mirror, thermal-arrest
Pipe is located between secondary condenser and a concentrator, and is on the focal line of secondary condenser, and secondary condenser passes through branch
Frame is supported.
2. a kind of secondary condensation face enhancing fresnel reflecting mirror line-focusing solar collection device as claimed in claim 1, its
It is characterised by：The thermal-collecting tube is straight type pipe, and its cross section is circular, ellipse or flat square.
3. a kind of secondary condensation face enhancing fresnel reflecting mirror line-focusing solar collection device as claimed in claim 1 or 2,
It is characterized in that：The thermal-collecting tube is vacuum tube, including outer tube and inner tube, and the interlayer between outer tube and inner tube is true
Sky, inner tube carrying energy absorbent medium.
4. a kind of secondary condensation face enhancing fresnel reflecting mirror line-focusing solar collection device as claimed in claim 3, its
It is characterised by：The outer tube and inner tube are light-transmission tube.
5. a kind of secondary condensation face enhancing fresnel reflecting mirror line-focusing solar collection device as claimed in claim 4, its
It is characterised by：The outer tube material is glass, PMMA or PC.
6. a kind of secondary condensation face enhancing fresnel reflecting mirror line-focusing solar collection device as described in claim 4 or 5,
It is characterized in that：The inner tube material is glass, PMMA or PC.
7. a kind of secondary condensation face enhancing fresnel reflecting mirror line-focusing solar collection device as claimed in claim 1, its
It is characterised by：Also include solar energy tracking device.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710352005.4A CN107166755A (en) | 2017-05-18 | 2017-05-18 | Secondary condensation face strengthens fresnel reflecting mirror line-focusing solar collection device |
| US16/614,374 US11774142B2 (en) | 2017-05-18 | 2018-05-18 | Double-line focusing solar energy collection apparatus |
| PCT/CN2018/087465 WO2018210330A1 (en) | 2017-05-18 | 2018-05-18 | Double-line focusing solar energy collection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710352005.4A CN107166755A (en) | 2017-05-18 | 2017-05-18 | Secondary condensation face strengthens fresnel reflecting mirror line-focusing solar collection device |
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| Publication Number | Publication Date |
|---|---|
| CN107166755A true CN107166755A (en) | 2017-09-15 |
Family
ID=59815199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710352005.4A Pending CN107166755A (en) | 2017-05-18 | 2017-05-18 | Secondary condensation face strengthens fresnel reflecting mirror line-focusing solar collection device |
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| Country | Link |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107796132A (en) * | 2017-10-17 | 2018-03-13 | 郑州大学 | A kind of groove type solar cogeneration system |
| WO2018210331A1 (en) * | 2017-05-18 | 2018-11-22 | 常州大学 | Double point-focusing solar energy collection apparatus |
| WO2018210330A1 (en) * | 2017-05-18 | 2018-11-22 | 常州大学 | Double-line focusing solar energy collection apparatus |
| CN108954865A (en) * | 2018-08-30 | 2018-12-07 | 广东工业大学 | A kind of orientation biography light solar-energy light collector |
| CN110375441A (en) * | 2018-04-13 | 2019-10-25 | 兰州大成聚光能源科技有限公司 | Solar energy light gathering and heat collecting system |
| WO2020154963A1 (en) * | 2019-01-30 | 2020-08-06 | 博立多媒体控股有限公司 | Light-concentrating solar device |
| CN113719004A (en) * | 2021-10-11 | 2021-11-30 | 中建五局装饰幕墙有限公司 | Novel secondary focusing photo-thermal phase change energy storage double-layer glass curtain wall module |
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| CN201352013Y (en) * | 2008-11-25 | 2009-11-25 | 戴建国 | Novel solar light and heat collecting system |
| CN101660845A (en) * | 2009-09-07 | 2010-03-03 | 东南大学 | Secondary reflection light gathering and heat collecting device with compound curved surface |
| CN104990286A (en) * | 2015-06-25 | 2015-10-21 | 上海理工大学 | Composite paraboloid solar collector |
| CN106123365A (en) * | 2016-08-11 | 2016-11-16 | 南京索乐优节能科技有限公司 | Linear Fresnel reflective solar heat collector in conjunction with glass sunlight house |
| CN106288440A (en) * | 2016-09-13 | 2017-01-04 | 苏州热工研究院有限公司 | A kind of Salar light-gathering structure |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201352013Y (en) * | 2008-11-25 | 2009-11-25 | 戴建国 | Novel solar light and heat collecting system |
| CN101660845A (en) * | 2009-09-07 | 2010-03-03 | 东南大学 | Secondary reflection light gathering and heat collecting device with compound curved surface |
| CN104990286A (en) * | 2015-06-25 | 2015-10-21 | 上海理工大学 | Composite paraboloid solar collector |
| CN106123365A (en) * | 2016-08-11 | 2016-11-16 | 南京索乐优节能科技有限公司 | Linear Fresnel reflective solar heat collector in conjunction with glass sunlight house |
| CN106288440A (en) * | 2016-09-13 | 2017-01-04 | 苏州热工研究院有限公司 | A kind of Salar light-gathering structure |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018210331A1 (en) * | 2017-05-18 | 2018-11-22 | 常州大学 | Double point-focusing solar energy collection apparatus |
| WO2018210330A1 (en) * | 2017-05-18 | 2018-11-22 | 常州大学 | Double-line focusing solar energy collection apparatus |
| CN107796132A (en) * | 2017-10-17 | 2018-03-13 | 郑州大学 | A kind of groove type solar cogeneration system |
| CN110375441A (en) * | 2018-04-13 | 2019-10-25 | 兰州大成聚光能源科技有限公司 | Solar energy light gathering and heat collecting system |
| CN108954865A (en) * | 2018-08-30 | 2018-12-07 | 广东工业大学 | A kind of orientation biography light solar-energy light collector |
| CN108954865B (en) * | 2018-08-30 | 2024-04-19 | 广东工业大学 | Directional light transmission solar condensing device |
| WO2020154963A1 (en) * | 2019-01-30 | 2020-08-06 | 博立多媒体控股有限公司 | Light-concentrating solar device |
| CN113719004A (en) * | 2021-10-11 | 2021-11-30 | 中建五局装饰幕墙有限公司 | Novel secondary focusing photo-thermal phase change energy storage double-layer glass curtain wall module |
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Application publication date: 20170915 |
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