CN101135500A - Multiple curved face composite solar energy concentrator based on bionics principle - Google Patents
Multiple curved face composite solar energy concentrator based on bionics principle Download PDFInfo
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- CN101135500A CN101135500A CNA2007100626960A CN200710062696A CN101135500A CN 101135500 A CN101135500 A CN 101135500A CN A2007100626960 A CNA2007100626960 A CN A2007100626960A CN 200710062696 A CN200710062696 A CN 200710062696A CN 101135500 A CN101135500 A CN 101135500A
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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
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Abstract
The invention relates to multi-surface compound solar concentrator based on bionics principle. It belongs to solar condensation and solar heat utilizing technical field. The apparatus includes one-class compound parabolic concentrator-CPC; polarized light device or modified Fresnel lens; secondary-class CPC; third class CPC and likes. It is a solar energy utilizing device capable of utilizing varies reflection or transmission curve surface combination to realize solar light high-density gathering and transferring.
Description
Affiliated technical field
The present invention relates to a kind of helioplant that can utilize multiple reflection or the combination of transmission curved surface to realize sunshine high-density aggregation and conduction, belong to Salar light-gathering and solar energy utilization technique field.
Background technology
In the solar concentrator of promoting the use of at present, be main with single-stage CPC (compound parabolic concentrator, Compound ParabolicConcentrator), especially the grooved CPC with two-dimensional symmetric serves as maximum.This class device biggest advantage is to need not to follow the tracks of exactly the sun just can reach spotlight effect preferably.Yet this class solar concentrator can only provide the preliminary sunshine that concentrates for the user, and general optically focused ratio is below 10.When the user needs the sunshine of high fluence density more, as when being used for solar energy green illumination, optically focused energy storage etc., this class concentrator generally can not meet the demands, thereby has limited applying of this type of device.Therefore, in order to overcome above-mentioned defective, further improve the optically focused ratio of solar condenser, utilizing the multistage CPC concentrator of the stacked composition of a plurality of CPC is highly significant.But the multistage CPC concentrator that simple stacked CPC forms has greatly reduced the maximum condensing angle of device, has destroyed single-stage CPC and need not the accurately superiority of tracking.The present invention is based on bionics principle, particularly, utilize many curved surfaces composite methods, both obtained the high concentration ratio of multistage CPC concentrator based on the optically focused principle of special flowers such as trumpet flower, increased the maximum condensing angle of device again, improved device and need not the accurately characteristic of tracking.
Summary of the invention
For overcoming existing solar concentrator optically focused, the invention provides a kind of new solar-energy light collector than low and the little shortcoming of optically focused energy-flux density.This device can concentrate low-density sunshine through multistage, thereby low-density common sunshine is gathered into highly dense sunshine, uses when needing for the user.
The technical solution adopted for the present invention to solve the technical problems is: the special concentration structure that forms gradually for the more sunshines of acquisition when imitating extraordinary plants and flowers to grow, structure as trumpet flower, pumpkin flower etc., utilize the combined reflected sunshine of many curved surfaces, realize that the multistage of sunshine concentrates, and finally designs the solar-energy light collector with high concentration ratio.This device can be three-dimensional funnelform (being called the light funnel), also can be the two-dimensional slot shape.The present invention has 2 or a plurality of compound parabolic concentrator (1) and (3) to connect to form through polarizer (2) or the transition of remodeling Fresnel light guiding lens (7), the symmetry axis of each CPC and polarizer (2) can be on same straight line, also can be not on same straight line; The reflecting surface of CPC at different levels all be by parabola through different rotation, translation or block, thereby they all have quadric feature; Polarizer (2) is one, and it can be formed by the local parabolic rotation by the little extremely big optical channel that enlarges gradually, also can be formed by other curve or angled straight lines rotation; Between first order CPC and the second level CPC, or between second level CPC and the third level CPC, can pass through polarizer (2) transition and connect, also can connect by the transition of remodeling Fresnel light guiding lens (7); CPC at different levels and polarizer (2) can be two-dimensional symmetric also can be rotational symmetric.
Each curved surface is a composite parabolic in fact, also is called CPC, common parabola is passed through specific rotation or blocks obtaining.Polarizer can be that one section parabola winding apparatus symmetry axis rotates a circle and obtains, also can rotate a circle and obtain by one section other curve or straight line winding apparatus symmetry axis, light inlet is little, light-emitting window is big, is mainly used in handle and becomes the light than mitre to be reflected into the light that becomes less angle with symmetry axis with symmetry axis.The function of the polarizer also Fresnel lens of available remodeling replaces.Connected mode is, the light-emitting window of first order CPC and the light inlet of polarizer link, and the light inlet of the light-emitting window of polarizer and second level CPC links, and the like.
Its operation principle is: after sunshine enters first order CPC, through the light-emitting window output of its surface reflection from first order CPC, because a part of light of this emergent light, the symmetry axis of device has bigger angle relatively, be unfavorable for reassociating of second level CPC, have in addition can can't pass second level CPC, therefore utilize polarizer or remodeling Fresnel lens to change direction of light, make it to optical axis direction deflection, CPC further assembles sunshine in order to the second level; If the sunray of exporting from the light-emitting window of second level CPC does not also reach customer requirements, can increase third level CPC as stated above, once more light is concentrated, also can utilize third level CPC that sunshine is deflected, thereby realize that sunshine is in the different directions outgoing.
The invention has the beneficial effects as follows, can will hang down the solar energy of energy-flux density,, obtain highdensity sunshine, for the user provides high-power high-intensity solar energy through too much curved surface is combined reflected.The present invention had both realized the high concentration ratio of multistage CPC concentrator, the maximum condensing angle of CPC is reduced too much,, therefore do not need sunshine tracking especially accurately as long as device roughly just can be obtained spotlight effect preferably facing to the direction of the sun, reduced apparatus cost, helped promoting the use of.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 one connection light path of the present invention and operation logic figure, wherein:
1-second level CPC (composite parabolic optical collector); 2-polarizer; 3-first order CPC; 4-incident ray; 5-symmetry axis.
Fig. 2-usefulness straight flange polarizer transition connects the enforcement illustration of first order CPC and second level CPC, wherein: 6-straight flange polarizer.
Fig. 3-usefulness remodeling Fresnel lens transition connects the enforcement illustration of first order CPC and second level CPC, wherein: the Fresnel lens of 7-remodeling.
Fig. 4-form the enforcement illustration of bend formula concentrator with a polarizer and a plurality of CPC, wherein: 8-third level CPC; 9-fourth stage CPC.
The enforcement illustration of Fig. 5-CPC reflecting surface generating mode, wherein:
The part that 10-parabola (18) is clipped; The focus of 11-parabola (18); The hatching of 12-parabolic reflector; The symmetry axis of 13-parabola (18); 14-light inlet; The symmetry axis of 15-CPC; The maximum condensing angle of 16-CPC; The symmetry axis of 17-parabola (12); The hatching of 18-parabolic reflector; The light-emitting window of 19-CPC; The focus of 20-parabola (12); The part that 21-parabola (12) is clipped.
Fig. 6-light is through the enforcement illustration of reflection by CPC.
Fig. 7-light can not be by the enforcement illustration of CPC through reflection.
Fig. 8-generate the enforcement illustration of polarizer by parabola, wherein: the part that 22-parabola is clipped; The part that 23-parabola is clipped; 24-polarizer reflecting surface.
Fig. 9-generate the enforcement illustration of polarizer by angled straight lines, wherein: the part that 25-angled straight lines is clipped; The part that 26-angled straight lines is clipped; 27-straight flange polarizer reflecting surface.
Figure 10-between first order CPC and second level CPC, install the enforcement illustration of polarizer and photoconductive tube additional, wherein: 28-photoconductive tube.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments:
Fig. 1 is connection light path of the present invention and operation logic figure.In Fig. 1, the operation logic of device can be explained as follows step by step:
The present invention is a kind of low-density sunshine can being concentrated through multistage, thereby common sunshine is gathered into the device of high density sunshine.Device is in running, sunshine (4) incides on the inner surface of first order CPC (3), (each CPC has a maximum condensing angle if the angle of sunshine (4) and symmetry axis (5) is less than the maximum condensing angle of first order CPC (3), light greater than maximum condensing angle can not pass through CPC), then sunshine is reflected to the light-emitting window place of CPC (3), thereby can enter the transmission of next stage such as polarizer, as shown in Figure 6.If the angle of sunshine (4) and symmetry axis (5) is greater than the maximum condensing angle of first order CPC (3), then sunshine will can not be reached light-emitting window by the reflecting surface reflected back space of CPC (3), can not realize the transmission of next stage, as shown in Figure 7.Enter the light of polarizer (2) from CPC (3) light-emitting window, comprised the light of various incident directions, the angle of some light and symmetry axis (5) may be bigger, greater than the maximum condensing angle of second level CPC (1).If therefore this part light directly enters second level CPC (1), then can not reach the light-emitting window of second level CPC (1).In order to make this part light also can reach the light-emitting window of second level CPC (1), must reduce the angle of they and symmetry axis (5), set up polarizer (2) for this reason.The slope of the reflecting surface of polarizer (2) is born, and will greatly reduce angle with symmetry axis (5) through its light reflected, thereby helps second level CPC (1) to further the concentrating of light, and penetrates from the light-emitting window of second level CPC (1).Angle can not reach the reflecting surface of polarizer (2) originally with regard to less light when entering polarizer (2), directly enters second level CPC (1), after reflection from the light-emitting window outgoing, realizes concentrating sunshine.The height of polarizer (2) needs to optimize as calculated to determine.
Fig. 2 is the enforcement illustration that connects first order CPC and second level CPC with the transition of straight flange polarizer.At this moment, the slope of the reflecting surface of polarizer (6) is also born, and can play the same function of polarizer (2).The making of polarizer (6) is simpler, but to the high angle scattered light near the light-emitting window place of first order CPC (3), possible deflection angle deficiency still makes it can not pass through second level CPC (1), can cause partial loss.Both select to use in practice.
Fig. 3 is the enforcement illustration that connects first order CPC and second level CPC with the transition of remodeling Fresnel lens.Common Fresnel lens can make the light of parallel incident converge on the focus.If circular common Fresnel lens obviously has to make the characteristic of directional light to symmetry axis deflection.The present invention has utilized these characteristics of Fresnel lens just.But, be not directional light, but very mixed and disorderly light from the light of first order CPC (3) light-emitting window outgoing.Therefore adopt common Fresnel lens can not obtain best effect.To this, must transform common Fresnel lens, the zone line (concrete size needs concrete calculating to determine) that makes it at Fresnel lens is common Fresnel lens, border area at Fresnel lens then adopts and common Fresnel lens opposite configuration, and making it has the function of dispersing to light.Because the sunshine in the incident of Fresnel lens border area is very big with the angle of device symmetry axis (5), behind remodeling Fresnel lens deflection angle, can make it to reduce with the angle of symmetry axis (5), help second level CPC (1) further converging to light.The concrete method of operation is, sunshine (4) incides on the inner surface of first order CPC (3), be reflected on the remodeling Fresnel Lenses (7), after (7) transmission, the light of most of sunshine changes nearly directional light (reducing with the angle of symmetry axis (5)) again into, and project on second level CPC (1) inner surface, converge at last through second level CPC (1) and export from the light-emitting window of second level CPC (1), realize concentrating of sunshine.
Fig. 4 is an enforcement illustration of forming bend formula concentrator with a polarizer and a plurality of CPC.In the device of collecting sunshine, some device needs outlet from different directions that sunshine is exported.Fig. 4 just light inlet and light-emitting window not at unidirectional solar concentrator.The structure of front two-stage is identical with Fig. 1 structure among Fig. 4, but has increased third level CPC (8) and fourth stage CPC (9) in the rear end of second level CPC (1).The sunshine that second level CPC (1) converges enters third level CPC (8), converged again and realized there to turn, enter fourth stage CPC (9) afterwards again and converge again, export from the light-emitting window of fourth stage CPC (9) at last, thereby the height of realizing sunshine concentrates and turning.
Fig. 5 is the enforcement illustration of CPC reflecting surface generating mode.Among Fig. 5, the part that parabola is clipped (10) is formed complete parabola with the hatching (18) of parabolic reflector, its symmetry axis is (13), but this parabola is rotated counterclockwise certain angle by integral body, and its focus (11) is just in time dropped on the paraboloidal hatching (12); Equally, the part that parabola is clipped (21) is formed complete parabola with the hatching (12) of parabolic reflector, its symmetry axis is (17), but this parabola is just in time dropped on the paraboloidal hatching (18) its focus (20) by the integral body certain angle that turns clockwise.Like this, from the light that light inlet (14) enters, angle can both arrive the light-emitting window (19) of CPC through parabolic reflector (18) or parabolic reflector (12) reflection, as shown in Figure 6 less than maximum condensing angle (16) between the symmetry axis (15) of every and CPC.Otherwise angle all can not arrive the light-emitting window (19) of CPC greater than the light of maximum condensing angle (16) between the symmetry axis (15) of every and CPC, and polished object reflecting surface (18) or parabolic reflector (12) reflected back light inlet (14), as shown in Figure 7.
Fig. 6 is that light is through the enforcement illustration of reflection by CPC.Among Fig. 6, the angle of the incident ray (4) and the CPC axis of symmetry (5) is less than maximum condensing angle (16), and light (4) is reflected to light-emitting window.
Fig. 7 is that light can not be by the enforcement illustration of CPC through reflection.Among Fig. 7, the angle of incident ray (4) and the CPC axis of symmetry (5) is greater than maximum condensing angle (16), light (4) be reflected face (12) and (18) reflected back space.
Fig. 8 is the enforcement illustration that is generated polarizer by parabola.Among Fig. 8, parabola is clipped two parts (22) and (23), keeps next section, and the remaining parabola of this section is rotated a circle around symmetry axis promptly gets polarizer (2), and its inner surface promptly is the reflecting surface (24) of polarizer.
Fig. 9 is the enforcement illustration that is generated polarizer by angled straight lines.Among Fig. 9, angled straight lines is clipped two parts (25) and (26), keeps next section, and the remaining angled straight lines of this section is rotated a circle around symmetry axis promptly gets straight flange polarizer (6), and its inner surface promptly is the reflecting surface (27) of straight flange polarizer.
Figure 10 is the enforcement illustration that installs polarizer and photoconductive tube between first order CPC and second level CPC additional.Sunshine from the outlet outgoing of polarizer (6) is introduced in the photoconductive tube (28), through the reflection of photoconductive tube (28) inwall, enter again among the second level CPC (1),, derive, obtain the sunshine of high fluence density from the outlet of second level CPC (1) after the reflection of second level CPC (1) is assembled.
Scope of the present invention is this invention preferred embodiment, and is all under the spirit and principles in the present invention, all should be within protection scope of the present invention to local improvement or modification that the present invention carries out.
Claims (4)
1. multiple curved face composite solar energy concentrator based on bionics principle, connect to form through polarizer (2) or the transition of remodeling Fresnel light guiding lens (7) by 2 or a plurality of compound parabolic concentrator (1) and (3), it is characterized in that: the symmetry axis of each compound parabolic concentrator and polarizer (2) can be on same straight line, also can be not on same straight line; The reflecting surface of compound parabolic concentrators at different levels all be by parabola through different rotation, translation or block, thereby they all have quadric feature.
2. the multiple curved face composite solar energy concentrator based on bionics principle according to claim 1, it is characterized in that: polarizer (2) be one by little to the big optical channel that enlarges gradually, it can be formed by the local parabolic rotation, also can be formed by other curve or angled straight lines rotation.
3. the multiple curved face composite solar energy concentrator based on bionics principle according to claim 1, it is characterized in that: between first order compound parabolic concentrator and the second level compound parabolic concentrator, or between second level compound parabolic concentrator and the third level compound parabolic concentrator, can pass through polarizer (2) transition and connect, also can connect by the transition of remodeling Fresnel light guiding lens (7).
4. the multiple curved face composite solar energy concentrator based on bionics principle according to claim 1 is characterized in that: compound parabolic concentrators at different levels and polarizer (2) can be two-dimensional symmetric also can be rotational symmetric.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100626960A CN101135500A (en) | 2007-01-15 | 2007-01-15 | Multiple curved face composite solar energy concentrator based on bionics principle |
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| CNA2007100626960A CN101135500A (en) | 2007-01-15 | 2007-01-15 | Multiple curved face composite solar energy concentrator based on bionics principle |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840067A (en) * | 2010-06-01 | 2010-09-22 | 浙江工业大学 | Modeling method of informal compound parabolic condenser based on tracepro software |
| CN101873084A (en) * | 2009-04-25 | 2010-10-27 | 鸿富锦精密工业（深圳）有限公司 | Solar energy collecting device |
| CN102214710A (en) * | 2010-04-09 | 2011-10-12 | 范中华 | Concentrated photovoltaic cell and photovoltaic array module having the same |
| CN102621693A (en) * | 2012-03-19 | 2012-08-01 | 泰山集团泰安市普瑞特机械制造有限公司 | Light balancing device for concentrated solar energy |
| CN105204150A (en) * | 2014-06-17 | 2015-12-30 | 北京大学深圳研究生院 | Compound paraboloid light concentrator |
| CN108401708A (en) * | 2018-04-27 | 2018-08-17 | 华南理工大学 | A kind of plant cultivation frame system based on lamp and artificial light source |
| CN108513822A (en) * | 2018-03-21 | 2018-09-11 | 华南理工大学 | A kind of energy-conserving plant culturing rack |
| CN108870300A (en) * | 2018-04-27 | 2018-11-23 | 华南理工大学 | A kind of natural light plate lamp system of underground garage |
| CN110063159A (en) * | 2019-04-12 | 2019-07-30 | 中国环境科学研究院 | It is a kind of for restoring the underwater light-supplementing system of submerged vegetation |
-
2007
- 2007-01-15 CN CNA2007100626960A patent/CN101135500A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873084A (en) * | 2009-04-25 | 2010-10-27 | 鸿富锦精密工业（深圳）有限公司 | Solar energy collecting device |
| CN102214710A (en) * | 2010-04-09 | 2011-10-12 | 范中华 | Concentrated photovoltaic cell and photovoltaic array module having the same |
| CN101840067A (en) * | 2010-06-01 | 2010-09-22 | 浙江工业大学 | Modeling method of informal compound parabolic condenser based on tracepro software |
| CN102621693A (en) * | 2012-03-19 | 2012-08-01 | 泰山集团泰安市普瑞特机械制造有限公司 | Light balancing device for concentrated solar energy |
| CN105204150A (en) * | 2014-06-17 | 2015-12-30 | 北京大学深圳研究生院 | Compound paraboloid light concentrator |
| CN108513822A (en) * | 2018-03-21 | 2018-09-11 | 华南理工大学 | A kind of energy-conserving plant culturing rack |
| CN108401708A (en) * | 2018-04-27 | 2018-08-17 | 华南理工大学 | A kind of plant cultivation frame system based on lamp and artificial light source |
| CN108870300A (en) * | 2018-04-27 | 2018-11-23 | 华南理工大学 | A kind of natural light plate lamp system of underground garage |
| CN110063159A (en) * | 2019-04-12 | 2019-07-30 | 中国环境科学研究院 | It is a kind of for restoring the underwater light-supplementing system of submerged vegetation |
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Open date: 20080305 |