CN101345496A - Spherical mirror combination type concentration power generation apparatus - Google Patents
Spherical mirror combination type concentration power generation apparatus Download PDFInfo
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- CN101345496A CN101345496A CNA2007100436082A CN200710043608A CN101345496A CN 101345496 A CN101345496 A CN 101345496A CN A2007100436082 A CNA2007100436082 A CN A2007100436082A CN 200710043608 A CN200710043608 A CN 200710043608A CN 101345496 A CN101345496 A CN 101345496A
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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
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention provides a spherical mirror combined concentrated solar generation device comprising a photovoltaic concentrator, a sunlight receiver and a sunlight automatic tracker which can automatically track the sun in order that the photovoltaic concentrator points to the sun all the time, wherein the photovoltaic concentrator is composed of a plurality of spherical mirrors, the position of each spherical mirror ensures that the shape and position of the incident sunlight is basically consistent with those of the sunlight receiver outer surface when the incident sunlight are concentrated to the sunlight receiver outer surface. The spherical mirror combined concentrated solar generation device of the invention improves the photovoltaic concentration multiple, the light intensity distribution is even, at the same time the precision requirement for the tracker is not high.
Description
Technical field
The present invention relates to a kind of device of solar generating, relate in particular to a kind of spherical mirror combination type concentration power generation apparatus.
Background technology
Concentrating solar photovoltaic generating can reduce the photovoltaic generation cost significantly.Along with improving constantly of new and effective concentrator cell efficient, concentrating generating system will be more and more important in the solar energy power generating field.Light-gathering optics has various ways, and main application is parabolic reflector formula point focusing system at present, and the advantage of this system is: (battery can be changed) easy to maintenance; Be convenient to upgrading (can change more high efficiency battery); Light concentrating times is variable; Cost low (the speculum cost is low, and light concentrating times can be very high, to the demand minimizing of battery).But following shortcoming is arranged also: the one, when adopting long focus reflector, light intensity is more even relatively, but very high to the tracking accuracy requirement, and the length of focal length is subjected to the restriction of the sunlight angle of divergence (+/-0.26 degree); The 2nd, when adopting weak point focal length speculum, light intensity is seriously inhomogeneous, but lower to the tracking accuracy requirement, needs the secondary optical system of complexity this moment, and with the uniformity of raising light intensity, but its effect is limited, system complex; The 3rd, it is higher that speculum is made required precision, and local error will cause the inhomogeneous of battery surface Energy distribution, reduces generating efficiency.
By test as can be known, the short more Energy distribution of focal length is inhomogeneous more, and when focal length during less than diameter, the inhomogeneities of light intensity can not be used (because having bigger distortion).Focal length is long more, because the edge spillover that the angle of divergence of sunlight causes is serious more, its spill-out is directly proportional with focal length.This characteristic can be reflected on the precision of tracker simultaneously, that is to say, focal length is long more, and is high more to the required precision of tracker.
In addition, large-scale parabolic reflector system generally is divided into fritter when making, and the precision of each fritter is had higher requirement, and to being in the fritter on the different-diameter, its curvature is also different, that is to say that these fritter speculums will have different Mold Makings.
Summary of the invention
Purpose of the present invention is to solve the problems referred to above that prior art exists, and provides a kind of light distribution evenly, tracking accuracy is required not high again spherical mirror combination type concentration power generation apparatus.
The object of the present invention is achieved like this: a kind of spherical mirror combination type concentration power generation apparatus, comprise concentrator, sunlight receiver and solar automatic tracking device, solar automatic tracking device can be from the motion tracking sun so that concentrator points to the sun all the time, be characterized in, described concentrator is combined by a plurality of spherical reflectors, the shape the when position of each spherical reflector guarantees that its sunlight with incident converges to the sunlight receiver outer surface and the shape and the position basically identical of position and sunlight receiver outer surface.
The area of described each spherical reflector is respectively 2～30 times of area of sunlight receiver.
Described concentrator is combined by at least 4 spherical reflectors, and is the center symmetric arrays with the receiver central shaft.
The curvature of described a plurality of spherical reflectors is identical with size.
The curvature of described a plurality of spherical reflectors and varying in size.
Spherical mirror combination type concentration power generation apparatus of the present invention is combined by a plurality of spherical reflectors owing to its concentrator, each spherical reflector is radiated at the hot spot that the sunlight of incident pools with receiver area basically identical size on the receiver, the onesize hot spot of a plurality of such small reflector reflections overlaps on receiver, thereby has improved light concentrating times.Less demanding to the light concentrating times of each spherical reflector like this, thereby make the poly-beam intensity ratio to receiver of each spherical reflector more even, and, when the hot spot that is converged by a plurality of such spherical reflectors was overlapping on receiver, the surface error of individual mirror was very little to light distribution inhomogeneities influence total on the receiver.The distance of speculum and receiver is short more, and is low more to the requirement of mirror surface precision, also low more to the required precision of tracker simultaneously.
Description of drawings
Fig. 1 is the basic structure schematic diagram of spherical mirror combination type concentration power generation apparatus of the present invention;
Fig. 2 is the structural representation of first embodiment of the concentrator among the present invention;
Fig. 3 is the structural representation of second embodiment of the concentrator among the present invention;
Fig. 4 is the structural representation of the 3rd embodiment of the concentrator among the present invention.
Embodiment
Referring to Fig. 1, cooperate referring to Fig. 2, Fig. 3, Fig. 4, spherical mirror combination type concentration power generation apparatus of the present invention, comprise concentrator 1, sunlight receiver 2 and solar automatic tracking device 3, solar automatic tracking device 3 can be from the motion tracking sun so that sunlight vertical incidence concentrator all the time.Concentrator 1 is wherein combined by a plurality of spherical reflectors 11, and the position of each spherical reflector 11 guarantees that the hot spot that its sunlight with incident pools with sunlight receiver area basically identical is radiated on the receiver.The area of each spherical reflector is respectively 2～30 times of area of sunlight receiver, and the curvature of a plurality of spherical reflectors can be identical with size, also can be different.
Referring to Fig. 2, the concentrator 1 in the spherical mirror combination type concentration power generation apparatus of the present invention can be combined by 4 spherical reflectors 11.4 spherical reflectors 11 have the different anglecs of rotation and position height respectively, so that the big or small basically identical of the size of the hot spot that converges and receiver 2, and all impinge upon on the receiver.
Referring to Fig. 3, the concentrator 1 in the spherical mirror combination type concentration power generation apparatus of the present invention can be combined by 15 spherical reflectors 11, and these 15 spherical reflectors are formed similar 4 * 4 array, and just one jiao of vacancy wherein forms 4 * 4 unfilled corner arrays.The speculum that Fig. 3 lower left corner is lacked, be since when the distance of speculum and receiver more in short-term, the anglec of rotation of this speculum is too big, converges hot spot and is easy to generate rugged change, so cancel.When if the distance of speculum and receiver is longer, needn't cancel this speculum.
Referring to Fig. 4, concentrator 1 in the spherical mirror combination type concentration power generation apparatus of the present invention can be combined by 60 spherical reflectors 11, per 15 spherical reflectors are formed one 4 * 4 unfilled corner array, and 44 * 4 unfilled corner arrays are that the center is symmetrical arranged and makes 4 unfilled corners to be symmetrically distributed in 4 jiaos of whole concentrator with the receiver.This concentrator can make the optically focused energy be increased to 4 times of concentrator shown in Figure 3.
Claims (5)
1, a kind of spherical mirror combination type concentration power generation apparatus, comprise concentrator, sunlight receiver and solar automatic tracking device, solar automatic tracking device can be from the motion tracking sun so that concentrator points to the sun all the time, it is characterized in that: described concentrator is combined by a plurality of spherical reflectors, the shape the when position of each spherical reflector guarantees that its sunlight with incident converges to the sunlight receiver outer surface and the shape and the position basically identical of position and sunlight receiver outer surface.
2, spherical mirror combination type concentration power generation apparatus as claimed in claim 1 is characterized in that: the area of described each spherical reflector is respectively 2～30 times of area of sunlight receiver.
3, spherical mirror combination type concentration power generation apparatus as claimed in claim 1 is characterized in that: described concentrator is combined by at least 4 spherical reflectors, and is the center symmetric arrays with the receiver central shaft.
4, spherical mirror combination type concentration power generation apparatus as claimed in claim 1 is characterized in that: the curvature of described a plurality of spherical reflectors is identical with size.
5, spherical mirror combination type concentration power generation apparatus as claimed in claim 1 is characterized in that: the curvature of described a plurality of spherical reflectors and varying in size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100436082A CN101345496A (en) | 2007-07-09 | 2007-07-09 | Spherical mirror combination type concentration power generation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100436082A CN101345496A (en) | 2007-07-09 | 2007-07-09 | Spherical mirror combination type concentration power generation apparatus |
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| Publication Number | Publication Date |
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| CN101345496A true CN101345496A (en) | 2009-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100436082A Pending CN101345496A (en) | 2007-07-09 | 2007-07-09 | Spherical mirror combination type concentration power generation apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963394A (en) * | 2010-09-30 | 2011-02-02 | 北京印刷学院 | Secondary reflective spherical surface lighting solar hot water generating device |
| CN104698577A (en) * | 2013-12-08 | 2015-06-10 | 首航节能光热技术股份有限公司 | Focus-fixed aspheric solar concentrator |
| CN107800375A (en) * | 2016-09-07 | 2018-03-13 | 上海太阳能科技有限公司 | Device of solar generating |
| CN108494359A (en) * | 2018-05-28 | 2018-09-04 | 北京民利储能技术有限公司 | A kind of solar electrical energy generation module and power generator of high optically focused |
-
2007
- 2007-07-09 CN CNA2007100436082A patent/CN101345496A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963394A (en) * | 2010-09-30 | 2011-02-02 | 北京印刷学院 | Secondary reflective spherical surface lighting solar hot water generating device |
| CN104698577A (en) * | 2013-12-08 | 2015-06-10 | 首航节能光热技术股份有限公司 | Focus-fixed aspheric solar concentrator |
| CN107800375A (en) * | 2016-09-07 | 2018-03-13 | 上海太阳能科技有限公司 | Device of solar generating |
| CN108494359A (en) * | 2018-05-28 | 2018-09-04 | 北京民利储能技术有限公司 | A kind of solar electrical energy generation module and power generator of high optically focused |
| CN108494359B (en) * | 2018-05-28 | 2023-08-29 | 北京民利储能技术有限公司 | High-concentration solar power generation module and power generation device |
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Open date: 20090114 |