CN101329112A - Central receiving type high temperature solar heat collecting system of light funnel light gathering orienting light transmission - Google Patents
Central receiving type high temperature solar heat collecting system of light funnel light gathering orienting light transmission Download PDFInfo
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- CN101329112A CN101329112A CNA2008101178171A CN200810117817A CN101329112A CN 101329112 A CN101329112 A CN 101329112A CN A2008101178171 A CNA2008101178171 A CN A2008101178171A CN 200810117817 A CN200810117817 A CN 200810117817A CN 101329112 A CN101329112 A CN 101329112A
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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
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- 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
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Abstract
The invention relates to a high-temperature solar-energy heat-collecting system provided with the functions of light-assembling with a light funnel, directional light-transmission and central light-receiving, belonging to the optical technology application and solar-energy light-assembling application field. The invention comprises the light funnel provided with a point-focusing function, a directional polariscope and a central receiver which are sequentially arranged. The sunshine is assembled to form a point light supply through the light funnel, and the position of the point light supply overlaps a focus of the paraboloidal directional polariscope, and the sunshine is reflected by the directional polariscope and then is sent to the central receiver to be received. As the sending direction of the directional polariscope is adjustable, one central receiver can receive the sunshine which is from different directions and collected by a plurality of light funnels, thus forming the high-temperature heat energy.
Description
Technical field
The invention belongs to optical technology application and Salar light-gathering and utilize the field, particularly solar energy highly effective optically focused, efficient leaded light and solar energy high-temperature heat collection utilize technical field.Also can be applicable to the fields such as the convergence of radio wave and propagation.
Background technology
Realize the large solar high-temperature heat-gathering, general method has following three kinds at present: large-scale parabolic reflective focusing, large-scale groove type paraboloid focus on and central tower gathering.But above-mentioned three kinds of methods respectively have shortcoming, and the shortcoming of large-scale parabolic reflective focusing is that device can not be done too greatly, therefore the finite energy of assembling.The shortcoming that large-scale groove type paraboloid focuses on is because heat transfer is too much oversize, complex structure, and thermal losses is big, and the working medium flow resistance is big, and temperature can not be assembled too high, generally only has about 250-350 ℃; The method temperature of central authorities' tower type focusing can be very high, reach about 500 ℃ or higher, but it need to set up the high tower of tens meters even up to a hundred meters, and each reflecting surface needs to follow the tracks of separately the sun, so cost is very high.Utilization of the present invention has the light-focusing type light funnel light concentrating of point focusing function, utilizes directed polarizer leaded light, makes sunshine shine central receiver after the reflection of directed polarizer and is received by central receiver.Because the light direction of directed polarizer is adjustable, therefore central receiver can receive the sunshine from a plurality of smooth collection funnels of different directions, thereby forms high temperature heat.Central authorities' receiver is ripe prior art, and it can convert the light that receives to high temperature heat.Central receiver of the present invention need not to build on the high tower, has saved construction cost, and the solar tracking system of all light funnels is identical, and the light direction of directed polarizer can immobilize after setting, thereby control strategy is simple, is easy to technically realize.
Summary of the invention
The purpose of this invention is to provide the central receiving type high temperature solar heat collecting system of a kind of light funnel light gathering orienting light transmission.This system can become spot light with sunlight, converts spot light to directional light again, and the directional light direction of outgoing all points to central receiver, and the parallel sunshine that utilizes at last central receiver to receive from different directions forms high temperature heat.
The objective of the invention is to be achieved through the following technical solutions.
A kind of light funnel light gathering orienting light transmission of the present invention central authorities receiving type high temperature solar heat collecting system is made up of to a plurality of lightguides and central receiver one or more subsystems, 0; Subsystem is passed to central receiver or is not directly passed to central receiver by lightguide by lightguide after receiving sunshine, converts high temperature heat to by central receiver.Subsystem is made up of rotation combination parabola, cylindrical lens reflecting surface and directed polarizer; Rotation combination parabola and cylindrical lens reflecting surface link into an integrated entity vertically, form the focus type light funnel of following solar motion; Directed polarizer is the paraboloid of revolution of the part of topping, and with section as light inlet, the size of clipping should guarantee that the light of prime reflection focuses on its focus as much as possible.Directional light is injected rotation combination parabola and by its reflection, is converged at the focus place after being reflected once more by the cylindrical lens reflecting surface again then along symmetry axis; The focal position of directed polarizer just in time overlaps with focus 7, and its light direction points to central receiver.When system moves, focus type light funnel parabolic by the rotation combination and that the cylindrical lens reflecting surface forms is followed the tracks of solar motion take focus as fixed point, directed polarizer fixed installation, and guarantee that its focus is in the focus place of light funnel, its light direction points to central receiver.So, be directed the polarizer reflection by the light from light funnel focus place and directly or via lightguide inject central receiver afterwards, receive through central receiver and be converted into high temperature heat.In the device of reality, focus type light funnel is owing to exist tracking error or structural failure, thereby the sunshine that is gathered in focus can not become a real point, and the sunshine that therefore reflects through directed polarizer can not be fully parallel.For sunshine is incided on the central receiver more accurately, prevent the part astigmatism, between directed polarizer and central receiver, can be connected with 0 to a plurality of lightguides.
The operation principle of system is that directional light is injected rotation combination parabola and by its reflection, converged at the focus place behind the secondary reflection again by the cylindrical lens reflecting surface again then along central shaft; Because the focal position of directed polarizer just in time overlaps with focus 7, its light direction points to again central receiver, so, directly inject central receiver after being directed polarizer reflection by the light from light funnel focus place, receive through central receiver and be converted into high temperature heat.
The invention has the beneficial effects as follows that light funnel and polarizer can become the sunshine beam convergence of hanging down energy-flux density the collimated light beam of high fluence density, and light direction is adjustable arbitrarily.With a plurality of solar concentrator subsystem arranged in arrays that formed by light funnel and polarizer around central receiver, and the central receiver of the optical registration that makes all polarizer outgoing, so central receiver will obtain very high solar light irradiation and can flow, to produce very high temperature after being converted into heat energy, thereby realize sunshine high temperature cumulative.The present invention has overcome large-scale groove type paraboloid focusing system because oversize too much, the complex structure of heat transfer, thermal losses is big, the working medium flow resistance is big, temperature can not be assembled too high shortcoming, has also overcome central tower type focusing system simultaneously and need set up the shortcoming that costly high tower, each reflecting surface need to follow the tracks of separately the sun.Central receiver of the present invention need not to build on the high tower, has saved construction cost, and the solar tracking system of all light funnels is identical, and the light direction of directed polarizer immobilizes after setting, thereby control strategy is simple, is easy to technically realize.
Description of drawings
Fig. 1-schematic diagram of the present invention;
The structure and the index path of Fig. 2-focus type light funnel;
Fig. 3-be connected with enforcement illustration of lightguide at directed polarizer light-emitting window end.
Fig. 4-have enforcement illustration of three subsystems;
Wherein: 1-rotation combination is parabolic; 2-cylindrical lens reflecting surface; 3-directional light, 4-central shaft, the directed polarizer of 5-, 6-central authorities receiver, 7-focus, 8-lightguide, first subsystem of 9-; Second subsystem of 10-; The 3rd subsystem of 11-.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
A kind of light funnel light gathering orienting light transmission of the present invention central authorities receiving type high temperature solar heat collecting system is made up of to a plurality of lightguides and central receiver one or more subsystems, 0; Subsystem is passed to central receiver 6 or is not directly passed to central receiver 8 by lightguide 8 by lightguide 8 after receiving sunshine, converts high temperature heat to by central receiver 8.Subsystem is made up of rotation combination parabola 1, cylindrical lens reflecting surface 2 and directed polarizer 5; Rotation combination parabolic 1 and cylindrical lens reflecting surface 2 link into an integrated entity vertically, form the focus type light funnel of following solar motion; Directed polarizer 5 is paraboloids of revolution of clipping 1/2nd head portions, and with section as light inlet.Directional light is injected rotation combination parabolic 1 and by its reflection, is converged at the focus place behind the secondary reflection again by cylindrical lens reflecting surface 2 again then along symmetry axis; The focal position of directed polarizer 5 just in time overlaps with focus 7, and its light direction points to central receiver 6.When system moves, focus type light funnel parabolic by the rotation combination and that the cylindrical lens reflecting surface forms is followed the tracks of solar motion take focus as fixed point, directed polarizer is fixedly mounted on the focus place of light funnel, and guarantees that its focus is in the focus place of light funnel, and its light direction points to central receiver.So, be directed the polarizer reflection by the light from light funnel focus place and directly or via lightguide inject central receiver afterwards, receive through central receiver and be converted into high temperature heat.In the device of reality, focus type light funnel is owing to exist tracking error or structural failure, thereby the sunshine that is gathered in focus can not become a real point, and the sunshine that therefore reflects through directed polarizer can not be fully parallel.For sunshine is incided on the central receiver more accurately, prevent the part astigmatism, between directed polarizer and central receiver, can be connected with 0 to a plurality of lightguides.
Figure 1 shows that it is schematic diagram of the present invention.The operation logic of system can be explained as follows step by step:
The operation principle of system is that directional light 3 is injected rotation combination parabolic 1 and by its reflection, converged at focus 7 places behind the secondary reflection again by cylindrical lens reflecting surface 2 again then along central shaft 4; Because the focal position of directed polarizer 5 just in time overlaps with 7, its light direction points to again central receiver 6, so, directly inject central receiver 6 after being directed polarizer 5 reflection by the light from light funnel focus place, receive through central receiver 6 and be converted into high temperature heat.
Fig. 2 is the structure and the index path of focus type light funnel, can the structure and the light path principle of focus type light funnel be described further.In Fig. 2, focus type light funnel is connected to form vertically by rotation combination parabolic 1 and cylindrical lens reflecting surface 2, directional light 3 is along central shaft 4 direction incidents, sunshine in the effective radius scope, major part will incide in the rotation combination parabolic 1, incide after reflection on cylindrical lens reflecting surface 2 inwalls, after the reflection of cylindrical lens reflecting surface 2 inwalls, converge to focus 7 places; Core will directly pass through cylindrical lens reflecting surface 2, but can not form focus without rotating the sunshine that makes up parabolic 1 reflection and directly extend through its exit, and become the optically focused loss of light funnel.
Fig. 3 is the enforcement illustration that is connected with lightguide 8 at directed polarizer light-emitting window end.In the device of reality, focus type light funnel is owing to exist tracking error or structural failure, thereby the sunshine that is gathered in focus 7 can not become a real point, and the sunshine that therefore reflects through directed polarizer 5 can not be fully parallel.For sunshine is incided on the central receiver 6 more accurately, prevent the part astigmatism, between directed polarizer 5 and central receiver 6, can be connected lightguide 8.
The solar energy that single light funnel is assembled is limited after all, collect more sunshine for making central receiver 6, obtain the heat energy of higher temperature, a plurality of subsystems can be set collect solar energy, the light-emitting window of the directed polarizer 5 of each subsystem all points to central receiver 6, and the gross energy that central receiver 6 is received is the stack summation of each subsystem energy.
Fig. 4 is the enforcement illustration with three subsystems.Among Fig. 4, first, second and third sub-systems all points to central receiver 6.And this moment the focus type light funnel in each subsystem sun tracker be the same, the step of work is identical, so can be unified to control by a control system.Central authorities' energy of receiving of receiver 6 is exactly the summation of the energy that receives during individualism respectively of three subsystems.
Claims (1)
1. a light funnel light gathering orienting light transmission central authorities receiving type high temperature solar heat collecting system is characterized in that: comprise that one or more subsystems, 0 are to a plurality of lightguides and central receiver; Described subsystem comprises rotation combination parabolic (1), cylindrical lens reflecting surface (2) and directed polarizer (5); Rotation combination parabolic (1) and cylindrical lens reflecting surface (2) link into an integrated entity vertically, form the focus type light funnel of following solar motion; Directed polarizer 5 is paraboloids of revolution of the part of topping, and with section as light inlet; Directional light (3) is injected rotation combination parabolic (1) and by its reflection, is converged at focus (7) after being reflected once more by cylindrical lens reflecting surface (2) again then and locate along symmetry axis (4); The focal position of directed polarizer (5) just in time overlaps with focus (7), and its light direction points to central receiver (6); Subsystem is passed to central receiver or is not directly passed to central receiver by lightguide by lightguide after receiving sunshine, converts high temperature heat to by central receiver.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008101178171A CN101329112A (en) | 2008-08-04 | 2008-08-04 | Central receiving type high temperature solar heat collecting system of light funnel light gathering orienting light transmission |
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| CNA2008101178171A CN101329112A (en) | 2008-08-04 | 2008-08-04 | Central receiving type high temperature solar heat collecting system of light funnel light gathering orienting light transmission |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788708B (en) * | 2008-09-26 | 2012-09-26 | 财团法人工业技术研究院 | Method and system for light collection and light energy converting apparatus |
| CN102721195A (en) * | 2012-07-06 | 2012-10-10 | 张德胜 | Solar condensation and tracking array horizontal directional collection system |
| CN103574936A (en) * | 2012-07-25 | 2014-02-12 | 成都易生玄科技有限公司 | Light condensing and transmitting insulation barrel |
| CN103792650A (en) * | 2014-02-28 | 2014-05-14 | 陕西师范大学 | Funnel-shaped optical energy current density multiplier |
| CN103822373A (en) * | 2014-03-14 | 2014-05-28 | 崔长海 | Funneling Fresnel lens focusing solar heat collection device |
| CN108954865A (en) * | 2018-08-30 | 2018-12-07 | 广东工业大学 | A kind of orientation biography light solar-energy light collector |
| CN110414059A (en) * | 2019-06-28 | 2019-11-05 | 浙江大学 | The radiant energy dfensity analogy method of planar heliostats in tower type solar thermo-power station |
-
2008
- 2008-08-04 CN CNA2008101178171A patent/CN101329112A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788708B (en) * | 2008-09-26 | 2012-09-26 | 财团法人工业技术研究院 | Method and system for light collection and light energy converting apparatus |
| CN102721195A (en) * | 2012-07-06 | 2012-10-10 | 张德胜 | Solar condensation and tracking array horizontal directional collection system |
| CN102721195B (en) * | 2012-07-06 | 2013-11-06 | 新疆熠金能源科技有限公司 | Solar condensation and tracking array horizontal directional collection system |
| CN103574936A (en) * | 2012-07-25 | 2014-02-12 | 成都易生玄科技有限公司 | Light condensing and transmitting insulation barrel |
| CN103574936B (en) * | 2012-07-25 | 2015-06-17 | 成都易生玄科技有限公司 | Light condensing and transmitting insulation barrel |
| CN103792650A (en) * | 2014-02-28 | 2014-05-14 | 陕西师范大学 | Funnel-shaped optical energy current density multiplier |
| CN103822373A (en) * | 2014-03-14 | 2014-05-28 | 崔长海 | Funneling Fresnel lens focusing solar heat collection device |
| 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 |
| CN110414059A (en) * | 2019-06-28 | 2019-11-05 | 浙江大学 | The radiant energy dfensity analogy method of planar heliostats in tower type solar thermo-power station |
| CN110414059B (en) * | 2019-06-28 | 2020-12-01 | 浙江大学 | Radiation energy density simulation method of planar heliostat in tower type solar thermal power station |
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Open date: 20081224 |