CN101609853B - Multiple-row linked solar uniform condensing tracking device - Google Patents
Multiple-row linked solar uniform condensing tracking device Download PDFInfo
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- CN101609853B CN101609853B CN200910089694XA CN200910089694A CN101609853B CN 101609853 B CN101609853 B CN 101609853B CN 200910089694X A CN200910089694X A CN 200910089694XA CN 200910089694 A CN200910089694 A CN 200910089694A CN 101609853 B CN101609853 B CN 101609853B
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- mirror
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- inclined guide
- linked solar
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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
Abstract
The invention relates to a multiple-row linked solar uniform condensing tracking device, comprising a plurality of reflecting condensing mirrors, a front inclined guide rail group, a rear inclined guide rail group, a horizontal frame provided with a light energy conversion part and a transmission device; the left guide rail and the right guide rail of each group of inclined guide rails are respectively arranged at the left side and the right side of the reflecting condensing mirror; and the transmission device drives the horizontal frame to move back and forth along the inclined guide rails. The reflecting condensing mirror is a linear Fresnel reflecting condensing mirror consisting of multifaced and slender plane reflecting mirrors, wherein, each plane reflecting mirror corresponds to different tangent planes of same reflecting condensing curve surface, and coincides with or is parallel to the tangent planes; and under the premise that the included angle of any two plane mirrors is constant, the up-and-down position of each plane reflecting mirror along the optical axis is not limited. The multiple-row linked solar uniform condensing tracking device can obtain light spots with uniform condensation, improve uniformity of light intensity distribution on the light energy conversion part, therefore, the battery is not damaged and the output power of a photovoltaic cell is not reduced.
Description
Technical field
The present invention relates to a kind of solar uniform condensing tracking device, particularly a kind of multiple-row linked solar uniform condensing tracking device belongs to field of solar energy utilization.
Background technology
In field of solar energy utilization, use usually mirror condenser with the sunlight reflecting condensation to the transform light energy parts.As having adopted axial symmetry parabolic type condenser among Chinese patent CN201110661Y and the CN1361397A, the parabolic mirror among the Chinese patent CN2090950U and for example.
If speculum is continuous parabolic type cylindrical mirror, when the sunlight oblique illumination, the light distribution of the focal beam spot of speculum is very uneven.As shown in Figure 2, the unit of x axle is centimetre among the figure.If the focal length of parabola cylindrical mirror is 1 meter, and the minute surface width also is 1 meter, when sunlight departs from optical axis 15 and spends, if 10 centimetres of wide photovoltaic cells are placed on apart from the mirror condenser center the strongest place of light intensity in 0.95 meter the plane.Sunlight is approximately directional light, can find that by calculating light intensity is very uneven herein, when some local light intensity can reach not to sunlight optically focused more than 120 times of light intensity, and some places have only several times, even be zero, this not only can reduce the power output of solar cell, and (this moment, the power output of battery only was 80%～90% under the uniform irradiation condition, referring to Franklin E.T, Coventry J.S., Effects of highly non-uniform illumination distribution on electrical performance of solar cells.Proceedings of Solar 2002-Australian and New Zealand Solar Energy Society), and even more serious be that the high local temperature of light intensity is also very high, not only can produce infringement to battery, and may cause the rapid increase of the thermal stress of the big local battery of variations in temperature, make the battery fracture and can't continue to use.Therefore this continuous type mirror condenser is not suitable in the fixed system of mirror condenser.
Summary of the invention
The purpose of this invention is to provide a kind of multiple-row linked solar uniform condensing tracking device, it can obtain the uniform hot spot of optically focused, improves the uniformity of the light distribution on the transform light energy parts, thereby does not damage battery, does not reduce the power output of photovoltaic cell.
For achieving the above object, the present invention is by the following technical solutions:
A kind of multiple-row linked solar uniform condensing tracking device, comprise two groups of inclined guide rails of mirror condenser and front and back that a plurality of specifications are identical or close, the horizontal frame that the transform light energy parts are installed and transmission device, the left and right rail of every group of inclined guide rails is respectively in the left and right sides of mirror condenser, transmission device drives horizontal frame and moves forward and backward along inclined guide rails, described mirror condenser is the Fei Nier mirror condenser, and the identical or close Fei Nier mirror condenser of these specifications should parallel or approximate parallel placement.Each Fei Nier speculum all is made up of a plurality of elongated plane mirrors, and wherein said linear Fei Nier mirror condenser is installed and maintained static on the ground; Each plane mirror of described composition Fei Nier mirror condenser is corresponding to the different tangent planes of same reflecting condensation curved surface, and coincidence or parallel with it, when parallel, guaranteeing that each plane mirror does not limit along the upper-lower position of optical axis under the constant prerequisite of angle between any two plane mirrors.
Further:
The center of each facial plane speculum of described composition Fei Nier mirror condenser all is on the same reflecting condensation curved surface, and and the tangent plane of this curved surface overlap.
Each facial plane speculum of the linear Fei Nier mirror condenser of described composition is all corresponding to the different tangent planes of same reflecting condensation curved surface, and coincidence or parallel with it, guaranteeing that each facial plane speculum does not limit along the upper-lower position of optical axis under the constant prerequisite of angle between the plane mirror of any two sides.
Described reflecting condensation curved surface is one of parabolic type cylinder, hyperbolic-type cylinder, oval line style cylinder, face of cylinder.
The width of each facial plane speculum of the linear Fei Nier mirror condenser of described composition is identical, and its width is determined as required: hot spot is even if desired, and then the width of each facial plane speculum should be more than or equal to the width of transform light energy parts; Light concentrating times height if desired, the width of each facial plane speculum should be less than or equal to the width of transform light energy parts so.
The width of each bar level crossing of the linear Fei Nier mirror condenser of described composition is inequality or incomplete same.
The angle on described inclined guide rails and ground equals the angle on mirror condenser and ground.
Described inclined guide rails is a tower structure.
The length of the Fei Nier mirror condenser of the length of every row's transform light energy parts and correspondence can be the same or different.
The present invention has following effect: owing to can obtain the uniform hot spot of optically focused, therefore can improve the uniformity of the light distribution on the transform light energy parts, thereby not damage battery, not reduce the power output of photovoltaic cell.
Description of drawings
Fig. 1 is a formation picture of device of the present invention;
Fig. 2 is the surface of intensity distribution of continuous parabolic type cylindrical mirror;
Fig. 3 is the surface of intensity distribution of linear Fresnel reflection condenser;
Fig. 4 is the execution mode schematic diagram of the photronic type of cooling or cogeneration.
Embodiment
Be described further below in conjunction with accompanying drawing.
See also Fig. 1.The present invention is a kind of multiple-row linked solar uniform condensing tracking device, comprises two groups of inclined guide rails of several linear luxuriant and rich with fragrance Neil mirror condensers 1 and front and back 2, a horizontal frame 3 and a transmission device (not shown) that the transform light energy parts have been installed.The left and right rail of every group of inclined guide rails 2 is respectively in the left and right sides of linear luxuriant and rich with fragrance Neil mirror condenser 1, and transmission device drives horizontal frame 3 and moves forward and backward along inclined guide rails 2.Inclined guide rails 2 adopts tower structure, can reduce blocking sunlight as far as possible.Because of transmission device belongs to known technology, so do not give unnecessary details at this.
Each Fei Nier mirror condenser is made up of some elongated plane mirrors.Wherein each facial plane speculum is all corresponding to the different tangent planes of same reflecting condensation curved surface, and overlaps with it or parallel.Guaranteeing that the position of each facial plane speculum (along optical axis direction) does not limit under the constant prerequisite of angle between the plane mirror of any two sides, can be according to the specific requirement of spotlight effect and the complexity decision of manufacture craft.And the Fei Nier mirror condenser that these specifications are identical or close should parallel or approximate parallel placement.
Above-mentioned reflecting condensation curved surface is meant the curved surface that can carry out reflecting condensation to light, as parabolic type cylinder, hyperbolic-type cylinder, oval line style cylinder, face of cylinder or the like.
The width of above-mentioned each facial plane speculum can be identical, its width is determined as required, hot spot is even if desired, then the width of each bar level crossing should be more than or equal to the width of transform light energy parts, light concentrating times height if desired, the width of each bar plane mirror should be less than or equal to the width of transform light energy parts so.
The width of above-mentioned each bar level crossing also can be inequality or incomplete same.
In order to obtain the uniform hot spot of optically focused, we change the form of mirror condenser into linear Fresnel reflection condenser (1 meter of its focal length, form by 10 elongated plane mirrors, the width of each facial plane speculum is 10 centimetres), the reflecting condensation curved surface adopts the parabolic type cylinder, and each facial plane speculum all overlaps with the tangent plane of this parabolic type cylinder.Under the situation identical with Fig. 1 illuminate condition, (unit of x axle is centimetre that solar cell is placed between 2～12 centimetres to the light distribution on the photovoltaic cell as shown in Figure 3.), at this moment the light intensity maximum is 10 times, and minimum place is 5 times, and average intensity is about 8 times, and the fluctuation range of light intensity maximum is ± 30%.As can be seen from the figure, the hot spot uniformity has had qualitative leap.This light distribution not only can not damage battery, can not reduce the power output of photovoltaic cell yet.
The following describes its Application Example.
With the Northern Hemisphere is example, identical or the close linear luxuriant and rich with fragrance Neil mirror surface of number row's specification is south fixed on the ground with identical inclination angle, and keeping motionless throughout the year, the distance of front and back two row's speculums does not influence back row's speculum optically focused with front-seat speculum and is advisable.The size at inclination angle should approximate local angle of latitude, can obtain spotlight effect preferably so throughout the year.
If certain special needs in season are arranged, for example only need obtain good spotlight effect in the winter time, the inclination angle on speculum and ground can be increased by 5～15 degree so.If only need obtain good spotlight effect on the contrary, the inclination angle on speculum and ground can be reduced 5～15 degree so in summer.
The transform light energy parts of same row number are fixed into a general frame with identical distance, be placed on the inclined guide rails parallel to the groundly, by a cover transmission device drive along inclined guide rails make progress (back) or downwards (preceding) mobile, in order to follow the tracks of the formed hot spot of linear luxuriant and rich with fragrance Neil speculum, make the transform light energy parts be in the strength of energy of hot spot all the time.
The length of the Fei Nier mirror condenser of the length of every row's transform light energy parts and correspondence can be the same or different.
Here said transform light energy parts had both comprised the photovoltaic cell that is used for opto-electronic conversion, also comprised the various thermal-collecting tubes that are used for the photo-thermal conversion.
When being used for opto-electronic conversion, can increase cooling system at the photovoltaic cell back side as required, existing active cooling method also has the passive type of cooling.Initiatively cooling also can realize the electric heating alliance, and Fig. 4 is a kind of embodiment wherein, wherein, lays one deck heat conductive insulating layer 5 at the back side of photovoltaic cell 4, in heat conductive insulating layer 5 back cooling water pipe 6 is set again then, passes to mobile cooling water 7 in cooling water pipe 6.Like this, the luminous energy in the sunlight not only can convert electric energy to by photovoltaic cell, also can convert heat energy to by the cooling system at the photovoltaic cell back side.The various types of cooling have had in summary property document " technical progress of concentration photovoltaic system " (" solar energy journal " 26 volumes the 4th phase p597-604) and the document quoted thereof and illustrate preferably and explain.
When being used for the photo-thermal conversion, the photo-thermal converting member both can be various thermal-collecting tubes, also can be various cavity type heat collectors.
The introduction of various thermal-collecting tubes is referring to chapter 3 in " solar utilization technique " (Wang Changgui writes for Luo Yunjun, He Zinian, Chemical Industry Press 2005); The introduction of cavity type heat collector is referring to Zhang Yaoming, Zhang Wenjin, and Zhang Zhen is far away, Sun Liguo, the patent " hollow chamber type solar energy receiver " (application number 200610039125.0) of people such as Liu Xiaohui invention, and the United States Patent (USP) of being quoted in this description of the invention.
Claims (10)
1. multiple-row linked solar uniform condensing tracking device, comprise the two groups of inclined guide rails in a plurality of mirror condensers and front and back, the horizontal frame that the transform light energy parts are installed and transmission device, the left and right rail of every group of inclined guide rails is respectively in the left and right sides of speculum, transmission device drives horizontal frame and moves forward and backward along inclined guide rails, described mirror condenser is linear Fei Nier mirror condenser, each Fei Nier mirror condenser all is made up of a plurality of elongated plane mirrors, it is characterized in that:
Described linear Fei Nier mirror condenser is installed and is maintained static on the ground;
Each plane mirror of described composition Fei Nier mirror condenser is corresponding to the different tangent planes of same reflecting condensation curved surface, and coincidence or parallel with it, when parallel, guaranteeing that each plane mirror does not limit along the upper-lower position of optical axis under the constant prerequisite of angle between any two plane mirrors.
2. multiple-row linked solar uniform condensing tracking device as claimed in claim 1 is characterized in that:
The placement that is essentially parallel to each other of all Fei Nier mirror condensers.
3. multiple-row linked solar uniform condensing tracking device as claimed in claim 1 is characterized in that:
Described reflecting condensation curved surface is one of parabolic type cylinder, hyperbolic-type cylinder, oval line style cylinder, face of cylinder.
4. as each described multiple-row linked solar uniform condensing tracking device in the claim 1 to 3, it is characterized in that:
The width of described plane mirror is identical, and its width is determined as required.
5. as each described multiple-row linked solar uniform condensing tracking device in the claim 1 to 3, it is characterized in that:
The width difference of described plane mirror, its width are determined as required.
6. multiple-row linked solar uniform condensing tracking device as claimed in claim 4 is characterized in that:
The width of described plane mirror is more than or equal to the width of transform light energy parts, so that spot intensity is even.
7. multiple-row linked solar uniform condensing tracking device as claimed in claim 4 is characterized in that:
The width of described plane mirror is less than or equal to the width of transform light energy parts, so that the light concentrating times height.
8. multiple-row linked solar uniform condensing tracking device as claimed in claim 1 is characterized in that:
The angle on described inclined guide rails and ground equals the angle on mirror condenser and ground.
9. as claim 1 or 8 described multiple-row linked solar uniform condensing tracking devices, it is characterized in that:
Described inclined guide rails is a tower structure.
10. multiple-row linked solar uniform condensing tracking device as claimed in claim 1 is characterized in that:
Described linear Fei Nier mirror condenser is the identical mirror condenser of specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910089694XA CN101609853B (en) | 2009-07-29 | 2009-07-29 | Multiple-row linked solar uniform condensing tracking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910089694XA CN101609853B (en) | 2009-07-29 | 2009-07-29 | Multiple-row linked solar uniform condensing tracking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101609853A CN101609853A (en) | 2009-12-23 |
| CN101609853B true CN101609853B (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910089694XA Expired - Fee Related CN101609853B (en) | 2009-07-29 | 2009-07-29 | Multiple-row linked solar uniform condensing tracking device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290462B (en) * | 2011-07-19 | 2014-07-30 | 王瑞峰 | Solar energy condensation tracking device |
| CN105278548A (en) * | 2014-07-11 | 2016-01-27 | 王瑞峰 | Tractive solar condensed light tracking device |
| AU2015376131B2 (en) * | 2015-01-09 | 2018-11-22 | Tom Robin Caine Boyde | Illumination for horticultural and other applications. |
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- 2009-07-29 CN CN200910089694XA patent/CN101609853B/en not_active Expired - Fee Related
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