CN205079478U - Slot type solar energy spotlight solar collecting system - Google Patents
Slot type solar energy spotlight solar collecting system Download PDFInfo
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- CN205079478U CN205079478U CN201520809847.4U CN201520809847U CN205079478U CN 205079478 U CN205079478 U CN 205079478U CN 201520809847 U CN201520809847 U CN 201520809847U CN 205079478 U CN205079478 U CN 205079478U
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- speculum
- insulation board
- endothermic tube
- tube
- heat collection
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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 utility model relates to a slot type solar energy spotlight solar collecting system. Including spotlight ware and evacuated collector tube, the spotlight ware includes the speculum, and evacuated collector tube is equipped with the insulation board including outer glass vestlet and systematic heat pipe, the vacuum annular space between outer glass vestlet and the systematic heat pipe, the speculum connects gradually the formation cambered surface by upper portion speculum, middle part speculum and lower part speculum, the insulation board is the absorbing surface with the side that the systematic heat pipe corresponds for plane of reflection a, side that corresponds with outer glass vestlet, the insulation board internal surface has high reflectivity, low emissivity characteristic in the all band, and the surface scribbles solar energy selectively absorbing coating, has at 0.2 -3 mu m solar radiation wave band high absorptivity, in the characteristic that is greater than the low emissivity of 3 mu m infrared bands. The utility model discloses can improve effectively in inhomogeneous problem of thermal -collecting tube circumference thermal current density and effective the reduction that evacuated collector tube systematic heat pipe externally radiates the heat waste under the high temperature thermal -arrest circumstances, improve collecting efficiency.
Description
Technical field
The utility model belongs to solar energy heat utilization technical field, is specifically related to a kind of groove type solar light and heat collection system.
Background technology
At present, light-concentrating solar heat-collection generating be new forms of energy development key areas, and wherein slot light collection solar energy heating electricity generation system be the most ripe in solar electrical energy generation, use maximum electricity generation systems.The core system of slot light collection type solar energy heat-collection generating device is exactly solar energy light gathering and heat collecting system.Groove type solar light and heat collection system comprises concentrator and solar vacuum heat-collecting pipe.
The shape of concentrator is parabolic shape, the reflecting surface that surface is made up of minute surface, its focal point is on vacuum heat collection pipe, after the specular light that vacuum heat collection pipe receives, in thermal-collecting tube, endothermic tube can produce different heat flow densities in circumference, and circumferential maximum temperature difference therefore can be caused to reach tens hold, cause stress difference, produce pipe deforming cause whole thermal-collecting tube air-tightness to reduce, meanwhile greatly shorten the life-span of thermal-collecting tube, so the problem improved concentrator and vacuum heat collection pipe and then solve the heat density of vacuum heat collection pipe uneven is necessary.
Be vacuum layer between endothermic tube and outer glass enclosure tube in solar vacuum heat-collecting pipe, within the heat of endothermic tube do not exist and scattered and disappeared by cross-ventilation.But can be conducted heat by radiation between interior endothermic tube and outer glass enclosure tube, thus cause thermal loss.In solar vacuum heat-collecting pipe, endothermic tube outer wall scribbles coating for selective absorption, and interior endothermic tube emissivity when temperature is lower is about 5%, and the heat major part that interior endothermic tube is radiated outer glass enclosure tube can lose.And the solar vacuum heat-collecting pipe be applied on slot light collection type collecting system, in it, endothermic tube can reach 400 DEG C even middle high temperature of more than 400 DEG C, and therefore, the heat flow density of the outside radiant heat transfer of endothermic tube can sharply increase.Interior endothermic tube emissivity simultaneously under high temperature can reach 10%, causes the outside dispersed heat of interior endothermic tube can be larger.So external heat loss problem becomes very meaningful under solving the interior higher situation of endothermic tube temperature.
Utility model content
Based on above-described two kinds of problems, that is: the radiations heat energy loss that under the uneven and middle high-temperature condition of the heat density that receives of vacuum heat collection pipe, thermal-collecting tube is external higher, for rationally effectively improving these two kinds of problems, the utility model proposes a kind of groove type solar light and heat collection system.
A kind of groove type solar light and heat collection system comprises concentrator and vacuum heat collection pipe; Described concentrator comprises speculum, and described vacuum heat collection pipe includes outer glass enclosure tube 2 and interior endothermic tube 3, and the external cylindrical surface of interior endothermic tube 3 is provided with interior pipe coating 31; Cavity between outer glass enclosure tube 2 and interior endothermic tube 3 is vacuum annular space 4, and improvement is:
Described speculum is in turn connected to form cambered surface by upper mirror 61, middle part speculum 1 and bottom speculum 62;
In described vacuum annular space 4, be provided with insulation board 5, a side corresponding with interior endothermic tube 3 on insulation board 5 is reflecting surface 51, and a side corresponding with outer glass enclosure tube 2 is absorbing surface 52; Described insulation board 5 inner surface has high reflectance, low-launch-rate characteristic in all band, and outer surface scribbles solar selectively absorbing coating, has the characteristic of high-absorbility, low-launch-rate;
Described speculum and described insulation board 5 form concentrator; Described concentrator axial symmetry, wherein upper mirror 61 and bottom speculum 62 are with the axis of middle part speculum 1 axisymmetricly, and upper mirror 61 and bottom speculum 62 dot projection that reflects secondary reflects on interior endothermic tube 3 to insulation board 5 inner surface.
Described insulation board 5 is in arc-shaped, and it is in 1/2 ~ 4/5 scope of vacuum annular space 4 radial diameter that insulation board 5 extends in locus occupied in vacuum annular space 4.
The central angle of the interior endothermic tube 3 that insulation board 5 covers is 120 ° ~ 150 °.
Described middle part speculum 1 shape and structure is parabolic shape structure; Described upper mirror 61 and bottom speculum 62 shape and structure are two symmetric parts up and down that parabolic shape intercepts.The dot projection that described middle part speculum 1 reflects is on interior endothermic tube 3, and the dot projection that upper mirror 61 and bottom speculum 62 reflect is on insulation board 5 inner surface.
The beneficial effects of the utility model embody following aspect:
1., by setting up arc insulation board, because described insulation board inner surface has high reflectance characteristic, in insulation board can being covered, endothermic tube part external radiations heat energy major part reflects back on interior endothermic tube, decreases the loss of heat;
2. by arranging the absorbed layer of alternative absorbing material at insulation board outer surface, solar irradiation direct projection is on described insulation board absorbed layer, insulation board temperature will raise, Radiant exothermicity then between the interior endothermic tube part that covers of described insulation board and insulation board will significantly reduce, thus indirectly decreases the external heat waste of interior endothermic tube;
3. by redesigning concentrator shape, can by the reflected light projects of upper mirror and bottom speculum on the insulation board reflecting surface being arranged on vacuum heat collection pipe vacuum annular interior volume, pass through insulation board reflecting surface secondary reflection again by the back side of ray cast to vacuum heat collection pipe, the problem that the heat flow density of thermal-collecting tube reception is uneven can be improved;
4. set up insulation board, although sheltered from the beam radia light that in part, endothermic tube can receive, decrease the caloric receptivity of interior endothermic tube, but by described 1,2 two points, the thermal loss that insulation board reduces is greater than the beam radia heat that interior endothermic tube part that described insulation board covers can obtain;
5. described in, a kind of novel concentrator device three partially reflecting mirror is stitched together, and has in real time, handled easily, the advantage such as detachable.Described insulation board is arranged in the vacuum annular space between the interior endothermic tube of described solar energy vacuum tube, outer glass enclosure tube, have spatter property, persistence, structure simple, be easy to the advantages such as manufacture.
In sum, a kind of groove type solar light and heat collection system described in the utility model can improve interior endothermic tube circumference heat flow density problem of non-uniform, and the radiant heat loss that in reducing, endothermic tube is external, has good value for applications.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is perpendicular to middle part, vacuum heat collection pipe axis a-a place speculum reflection ray cross sectional representation in Fig. 1.
Fig. 3 is perpendicular to vacuum heat collection pipe axis a-a place upper mirror, bottom speculum reflection ray cross sectional representation in Fig. 1.
Sequence number in upper figure: middle part speculum 1, outer glass enclosure tube 2, interior endothermic tube 3, interior pipe coating 31, vacuum annular space 4, insulation board 5, reflecting layer 51, absorbed layer 52, upper mirror 61, bottom speculum 62.
Detailed description of the invention
Below in conjunction with accompanying drawing, by embodiment, the utility model is further described.
See Fig. 1, a kind of groove type solar light and heat collection system comprises concentrator and vacuum heat collection pipe.Concentrator comprises speculum; Vacuum heat collection pipe includes outer glass enclosure tube 2 and interior endothermic tube 3, and the external cylindrical surface of interior endothermic tube 3 is provided with interior pipe coating 31; Cavity between outer glass enclosure tube 2 and interior endothermic tube 3 is vacuum annular space 4, and improvement is: speculum is in turn connected to form cambered surface by upper mirror 61, middle part speculum 1 and bottom speculum 62;
See Fig. 2, be provided with insulation board 5 in vacuum annular space 4, a side corresponding with interior endothermic tube 3 on insulation board 5 is reflecting surface 51, and a side corresponding with outer glass enclosure tube 2 is absorbing surface 52; Insulation board 5 inner surface has high reflectance, low-launch-rate characteristic in all band, outer surface scribbles solar selectively absorbing coating, have the characteristic of high-absorbility, low-launch-rate, solar selectively absorbing coating is more than 90% in the absorptivity of the solar radiation wave band of 0.2 ~ 3 μm.
Insulation board 5 is in arc-shaped, and it is in 4/5 scope of vacuum annular space 4 radial diameter that insulation board 5 extends in locus occupied in vacuum annular space 4; The central angle of the interior endothermic tube 3 that insulation board 5 covers is 120 °.
Speculum and described insulation board 5 form concentrator; Concentrator axial symmetry, wherein upper mirror 61 and bottom speculum 62 with the axis of middle part speculum 1 for symmetry axis.Middle part speculum 1 shape and structure is parabolic shape structure; Upper mirror 61 and bottom speculum 62 shape and structure are two symmetric parts up and down that parabolic shape intercepts.The dot projection that middle part speculum 1 reflects is on interior endothermic tube 3, and the dot projection that upper mirror 61 and bottom speculum 62 reflect is to insulation board 5 inner surface and secondary reflect on interior endothermic tube 3.
Operation principle of the present utility model is described as follows:
Along with sun elevation angle in a day constantly changes, this trench light condensing system needs to follow the tracks of the sun to reach maximum Heat-collecting effect, due to this trench light condensing system adopt be slot-type optical collector and solar energy vacuum tube one tracking mode, namely slot-type optical collector and solar energy vacuum tube are fixed together to rotate and follow the tracks of the sun, now insulation board 5 will always just to sun direct projection irradiation, and can ensure the sunray propagation path not blocking middle part speculum 1 reflection.View factor in being blocked by insulation board 5 between endothermic tube part and reflecting layer 51 should be large as much as possible, and this just makes the radiations heat energy major part of this interior endothermic tube part can project on the reflecting layer 51 of insulation board 5.Opening angle is answered to receive the flare of upper mirror 61 and bottom speculum 62 in the two ends of insulation board 5 simultaneously, and between insulation board 5 port and interior endothermic tube 3, radial distance is 3/5 ~ 4/5 of vacuum annular space 4 radial diameter.Insulation board reflecting layer 51 has high reflectance, the light of upper mirror and the reflection of bottom speculum can be secondary reflected to interior endothermic tube side, and endothermic tube partial radiation in being blocked by insulation board 5 is got back on interior endothermic tube 3 to the reflect heat on reflecting layer 51, improve interior endothermic tube 3 heat flow density uneven and block the external heat loss through radiation of this interior endothermic tube part.After absorbed layer 52 absorbs beam radia, the bulk temperature of insulation board 5 will obviously raise, this make to be blocked by insulation board 5 in radiant heat transfer amount between endothermic tube part and insulation board 5 significantly reduce, indirectly decrease radiation heat loss.
See Fig. 3, sunray reflexes on insulation board reflecting layer 51 and interior endothermic tube 3 through upper mirror 61 and bottom speculum 62, and between insulation board 5 port and interior endothermic tube 3, radial distance is 4/5 of vacuum annular space 4 radial diameter.Insulation board reflecting layer 51 by secondary reflection by light reflection on interior endothermic tube.
To sum up, although after being provided with insulation board 5, insulation board 5 can improve interior endothermic tube 3 heat flow density problem of non-uniform and stop the external heat loss through radiation of this interior endothermic tube part.Simultaneously insulation board 5 is arranged in the vacuum annular space 4 between the interior endothermic tube 3 of described solar energy vacuum tube, outer glass enclosure tube 2, have spatter property, persistence, structure simple, be easy to the advantages such as manufacture.
Claims (5)
1. a groove type solar light and heat collection system, comprises concentrator and vacuum heat collection pipe; Described concentrator comprises speculum, and described vacuum heat collection pipe includes outer glass enclosure tube (2) and interior endothermic tube (3), and the external cylindrical surface of interior endothermic tube (3) is provided with interior pipe coating (31); Cavity between outer glass enclosure tube (2) and interior endothermic tube (3) is vacuum annular space (4), it is characterized in that:
Described speculum is in turn connected to form cambered surface by upper mirror (61), middle part speculum (1) and bottom speculum (62);
In described vacuum annular space (4), be provided with insulation board (5), the upper side corresponding with interior endothermic tube (3) of insulation board (5) is reflecting surface (51), and a side corresponding with outer glass enclosure tube (2) is absorbing surface (52); Described insulation board (5) inner surface has high reflectance, low-launch-rate characteristic in all band, and outer surface scribbles solar selectively absorbing coating, has the characteristic of high-absorbility, low-launch-rate;
Described speculum and described insulation board (5) form concentrator; Described concentrator axial symmetry, wherein upper mirror (61) and bottom speculum (62) are with the axis of middle part speculum (1) axisymmetricly, and upper mirror (61) and bottom speculum (62) dot projection that reflects secondary reflects on interior endothermic tube (3) to insulation board (5) inner surface.
2. a kind of groove type solar light and heat collection system according to claim 1, it is characterized in that: described insulation board (5) is in arc-shaped, and it is in 1/2 ~ 4/5 scope of vacuum annular space (4) radial diameter that insulation board (5) extends in locus occupied in vacuum annular space (4).
3. a kind of groove type solar light and heat collection system according to claim 1, is characterized in that: the central angle of the interior endothermic tube (3) that insulation board (5) covers is 120 ° ~ 150 °.
4. a kind of groove type solar light and heat collection system according to claim 1, is characterized in that, described middle part speculum (1) shape and structure is parabolic shape structure; Described upper mirror (61) and bottom speculum (62) shape and structure are two symmetric parts up and down that parabolic shape intercepts;
The dot projection that described middle part speculum (1) reflects is on interior endothermic tube (3), and the dot projection that upper mirror (61) and bottom speculum (62) reflect is on insulation board (5) inner surface.
5. a kind of groove type solar light and heat collection system according to claim 1, is characterized in that: described solar selectively absorbing coating is more than 90% in the absorptivity of the solar radiation wave band of 0.2 ~ 3 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520809847.4U CN205079478U (en) | 2015-10-20 | 2015-10-20 | Slot type solar energy spotlight solar collecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520809847.4U CN205079478U (en) | 2015-10-20 | 2015-10-20 | Slot type solar energy spotlight solar collecting system |
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| Publication Number | Publication Date |
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| CN205079478U true CN205079478U (en) | 2016-03-09 |
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| CN201520809847.4U Active CN205079478U (en) | 2015-10-20 | 2015-10-20 | Slot type solar energy spotlight solar collecting system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782975A (en) * | 2016-04-19 | 2016-07-20 | 英菲实业（辽宁）有限公司 | Multi-reflecting-surface parabola type infrared radiant energy total reflection cover |
| CN106679196A (en) * | 2017-01-10 | 2017-05-17 | 福建工程学院 | Straight ribbed pipe fin inserting trough-type condensation vacuum solar heat collector |
| CN106766258A (en) * | 2016-12-06 | 2017-05-31 | 中国科学技术大学 | A kind of high-temperature vacuum heat-collecting tube with transparent insulation board |
| CN107101392A (en) * | 2017-05-24 | 2017-08-29 | 吴闽强 | A kind of solar vacuum heat-collecting pipe |
| CN107192144A (en) * | 2016-03-14 | 2017-09-22 | 南京桑立瑞新能源科技有限公司 | A kind of groove type solar receiver with secondary condensation |
| CN108317744A (en) * | 2018-04-11 | 2018-07-24 | 中国电建集团成都勘测设计研究院有限公司 | Concentrating vacuum tube and high concentration ratio trough heat collection |
| CN108571830A (en) * | 2018-02-05 | 2018-09-25 | 北京石油化工学院 | Solar energy heating radiator and electricity generation system |
| CN108870770A (en) * | 2018-07-20 | 2018-11-23 | 北京兆阳能源技术有限公司 | A kind of production method of reception device and glass baseplate |
| CN110032052A (en) * | 2019-04-25 | 2019-07-19 | 珠海毅希科技有限公司 | One kind is novel to preheat toner cartridge |
| CN110513892A (en) * | 2019-08-29 | 2019-11-29 | 东南大学 | Semi-circular thermal-collecting tube and big opening high concentration ratio slot light collection collecting system with fin |
| CN114751371A (en) * | 2022-04-22 | 2022-07-15 | 西安交通大学 | Concentrating solar continuous flow gas-phase water decomposition hydrogen production reaction system |
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2015
- 2015-10-20 CN CN201520809847.4U patent/CN205079478U/en active Active
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192144A (en) * | 2016-03-14 | 2017-09-22 | 南京桑立瑞新能源科技有限公司 | A kind of groove type solar receiver with secondary condensation |
| CN105782975A (en) * | 2016-04-19 | 2016-07-20 | 英菲实业（辽宁）有限公司 | Multi-reflecting-surface parabola type infrared radiant energy total reflection cover |
| CN106766258A (en) * | 2016-12-06 | 2017-05-31 | 中国科学技术大学 | A kind of high-temperature vacuum heat-collecting tube with transparent insulation board |
| CN106766258B (en) * | 2016-12-06 | 2019-02-12 | 中国科学技术大学 | A kind of high-temperature vacuum heat-collecting tube of the transparent insulation board of band |
| CN106679196A (en) * | 2017-01-10 | 2017-05-17 | 福建工程学院 | Straight ribbed pipe fin inserting trough-type condensation vacuum solar heat collector |
| CN107101392A (en) * | 2017-05-24 | 2017-08-29 | 吴闽强 | A kind of solar vacuum heat-collecting pipe |
| 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 |
| CN108317744A (en) * | 2018-04-11 | 2018-07-24 | 中国电建集团成都勘测设计研究院有限公司 | Concentrating vacuum tube and high concentration ratio trough heat collection |
| CN108317744B (en) * | 2018-04-11 | 2023-08-08 | 中国电建集团成都勘测设计研究院有限公司 | Light-gathering vacuum tube and high-light-gathering-ratio groove type heat collection device |
| CN108870770A (en) * | 2018-07-20 | 2018-11-23 | 北京兆阳能源技术有限公司 | A kind of production method of reception device and glass baseplate |
| CN110032052A (en) * | 2019-04-25 | 2019-07-19 | 珠海毅希科技有限公司 | One kind is novel to preheat toner cartridge |
| CN110513892A (en) * | 2019-08-29 | 2019-11-29 | 东南大学 | Semi-circular thermal-collecting tube and big opening high concentration ratio slot light collection collecting system with fin |
| CN114751371A (en) * | 2022-04-22 | 2022-07-15 | 西安交通大学 | Concentrating solar continuous flow gas-phase water decomposition hydrogen production reaction system |
| CN114751371B (en) * | 2022-04-22 | 2023-09-19 | 西安交通大学 | Concentrating solar continuous flow gas-phase water splitting hydrogen production reaction system |
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