CN102902000A - Photovoltaic Fresnel lens for condensation - Google Patents
Photovoltaic Fresnel lens for condensation Download PDFInfo
- Publication number
- CN102902000A CN102902000A CN2011102139640A CN201110213964A CN102902000A CN 102902000 A CN102902000 A CN 102902000A CN 2011102139640 A CN2011102139640 A CN 2011102139640A CN 201110213964 A CN201110213964 A CN 201110213964A CN 102902000 A CN102902000 A CN 102902000A
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- China
- Prior art keywords
- fresnel lenses
- fresnel lens
- photovoltaic
- glass
- condensation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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 provides a photovoltaic Fresnel lens for condensation. A layer of glass is arranged on the Fresnel lens; and a thin film for preventing ultraviolet rays is adhered on the surface of the glass. According to the photovoltaic Fresnel lens for condensation, the glass for preventing the ultraviolet rays is arranged above a lens, so that the Fresnel lens can be protected; the Fresnel lens is prevented from being aged; and the service life of the Fresnel lens can be prolonged.
Description
Technical field
The invention belongs to the solar facilities field, and relate in particular to a kind of Fresnel Lenses for condensation photovoltaic.
Background technology
Condensation photovoltaic (CPV) electricity generation system can combine traditional solar energy power technology with extensive heat build-up solar power plant, can greatly strengthen solar energy production.And CPV technology scioptics or minute surface amplify hundreds and thousands of times with the sun power that receives, and then the energy that amplifies are focused on the high little photoelectric cell of efficient.By amplifying sun power, this technology has reduced the consumption of semiconductor material in the photoelectric cell effectively.Concentrating photovoltaic power generation ultimate principle and advantage concentrating photovoltaic power generation ultimate principle CPV thereof are focused at a narrow and small zone (focal spot) to the light on certain area by condenser system by the mode of optically focused, solar cell only needs the size of focal spot area to get final product, thereby has significantly reduced the consumption of solar cell.Under the similarity condition, multiplying power is higher, and required solar-electricity pool area is less.The cost Technology Ways that concentrating photovoltaic power generation advantage photovoltaic generation is new.System's conversion efficiency is high.High magnification CPV adopts three or the five compounds of group batteries such as GaAs, and CPV system conversion efficiency reaches 28%, exceeds much than silica-based solar cell and thin-film solar cells.
In existing light gathering photovoltaic power generating system, in order to improve the utilization ratio of luminous energy, be to use Fresnel Lenses mostly, again in order to save cost, mostly use the Fresnel Lenses of being made by organic polymer, after through sun long-term irradiation, owing to contain ultraviolet ray in the sunshine, ultraviolet ray meeting be so that the organic macromolecule strand can fracture, thereby cause wearing out of Fresnel Lenses, reduce the reflection of light rate, thereby reduce the utilization ratio of luminous energy.
Summary of the invention
The object of the invention is to provide a kind of Fresnel Lenses for condensation photovoltaic, in order to overcome the Fresnel Lenses that is used for condensation photovoltaic in the prior art aging problem occurs easily.
To achieve these goals, the present invention proposes a kind of Fresnel Lenses for condensation photovoltaic, above the described Fresnel Lenses one deck glass is set, and described glass surface posts the antiultraviolet film.
Optionally, the thickness range of described glass is 1cm to 20cm.
Optionally, the thickness of described glass is 1cm, 5cm, 10cm, 15cm or 20cm.
Optionally, the distance range between described glass and the described Fresnel Lenses is 0.1cm to 30cm.
Optionally, the distance between described glass and the described Fresnel Lenses is 0.1cm, 1cm, 10cm, 20cm or 30cm.
Compared with prior art; beneficial effect of the present invention is: the present invention arranges the glass of an antiultraviolet above lens for the Fresnel Lenses of condensation photovoltaic; protect Fresnel Lenses, prevented that Fresnel Lenses is aging, increased the life-span of Fresnel Lenses.
Description of drawings
Fig. 1 is the structural representation that the present invention is used for the Fresnel Lenses of condensation photovoltaic.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail.
Please refer to Fig. 1, Fig. 1 is the structural representation that the present invention is used for the Fresnel Lenses of condensation photovoltaic, a kind of Fresnel Lenses for condensation photovoltaic of the present invention arranges one deck glass 12 above the described Fresnel Lenses 11, and the antiultraviolet film is posted on described glass 12 surfaces.For glass 12 is set, can adopt a bracing frame 10 to support, the thickness range of described glass is 1cm to 20cm, preferably, the thickness of described glass is 1cm, 5cm, 10cm, 15cm or 20cm, distance range between described glass and the described Fresnel Lenses is 0.1cm to 30cm, and preferred, the distance between described glass and the described Fresnel Lenses is 0.1cm, 1cm, 10cm, 20cm or 30cm.
Mostly Fresnel Lenses is annotate to press the thin slice that forms by polyolefine material, and lens surface simultaneously is the light face, the another side imprinting ascending concentric circles.Fresnel Lenses many times be equivalent to the convex lens of infrared ray and visible light, effect is better, but cost is more much lower than common convex lens.Fresnel Lenses can be classified according to optical design or structure.The Fresnel Lenses effect has two: the one, and focussing force; The 2nd, release infrared signal with the form of temperature variation in the PIR heat that changes with being divided into several area pellucidas and dark space in the search coverage, making the motive objects physical efficiency that enters search coverage.The glass of one antiultraviolet is set above its lens, has prevented the fracture of polyolefine material chemical bond under action of ultraviolet radiation, alleviated the aging of Fresnel Lenses.
Although the present invention discloses as above with preferred embodiment, the present invention is defined in this.Any those skilled in the art without departing from the spirit and scope of the present invention, all can make various changes or modifications, so protection scope of the present invention should be as the criterion with the claim limited range.
Claims (5)
1. Fresnel Lenses that is used for condensation photovoltaic, it is characterized in that: one deck glass is set above the described Fresnel Lenses, and described glass surface posts the antiultraviolet film.
2. Fresnel Lenses according to claim 1, it is characterized in that: the thickness range of described glass is 1cm to 20cm.
3. Fresnel Lenses according to claim 2, it is characterized in that: the thickness of described glass is 1cm, 5cm, 10cm, 15cm or 20cm.
4. Fresnel Lenses according to claim 1, it is characterized in that: the distance range between described glass and the described Fresnel Lenses is 0.1cm to 30cm.
5. Fresnel Lenses according to claim 4, it is characterized in that: the distance between described glass and the described Fresnel Lenses is 0.1cm, 1cm, 10cm, 20cm or 30cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102139640A CN102902000A (en) | 2011-07-27 | 2011-07-27 | Photovoltaic Fresnel lens for condensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102139640A CN102902000A (en) | 2011-07-27 | 2011-07-27 | Photovoltaic Fresnel lens for condensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102902000A true CN102902000A (en) | 2013-01-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102139640A Pending CN102902000A (en) | 2011-07-27 | 2011-07-27 | Photovoltaic Fresnel lens for condensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102902000A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715289A (en) * | 2013-12-23 | 2014-04-09 | 华北电力大学 | Design method for broad spectrum uniform focal plane Fresnel lens |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6111190A (en) * | 1998-03-18 | 2000-08-29 | Entech, Inc. | Inflatable fresnel lens solar concentrator for space power |
| CN1740701A (en) * | 2005-09-14 | 2006-03-01 | 阮立山 | Solar energy collecting plate and producing method thereof |
| CN201048137Y (en) * | 2007-05-18 | 2008-04-16 | 北京科强科技有限责任公司 | Concentration type solar cell device |
| CN201100915Y (en) * | 2007-09-01 | 2008-08-13 | 孔浩 | Prism solar battery |
| CN101556019A (en) * | 2008-04-10 | 2009-10-14 | 台湾基材科技股份有限公司 | Light collecting device with Fresnel lens |
| WO2010088632A2 (en) * | 2009-02-02 | 2010-08-05 | Glasspoint Solar, Inc. | Concentrating solar power with glasshouses |
| CN101859806A (en) * | 2010-06-04 | 2010-10-13 | 南京信息职业技术学院 | Concentrating solar photovoltaic generating module with Fresnel cylindrical lens |
-
2011
- 2011-07-27 CN CN2011102139640A patent/CN102902000A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6111190A (en) * | 1998-03-18 | 2000-08-29 | Entech, Inc. | Inflatable fresnel lens solar concentrator for space power |
| CN1740701A (en) * | 2005-09-14 | 2006-03-01 | 阮立山 | Solar energy collecting plate and producing method thereof |
| CN201048137Y (en) * | 2007-05-18 | 2008-04-16 | 北京科强科技有限责任公司 | Concentration type solar cell device |
| CN201100915Y (en) * | 2007-09-01 | 2008-08-13 | 孔浩 | Prism solar battery |
| CN101556019A (en) * | 2008-04-10 | 2009-10-14 | 台湾基材科技股份有限公司 | Light collecting device with Fresnel lens |
| WO2010088632A2 (en) * | 2009-02-02 | 2010-08-05 | Glasspoint Solar, Inc. | Concentrating solar power with glasshouses |
| CN101859806A (en) * | 2010-06-04 | 2010-10-13 | 南京信息职业技术学院 | Concentrating solar photovoltaic generating module with Fresnel cylindrical lens |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715289A (en) * | 2013-12-23 | 2014-04-09 | 华北电力大学 | Design method for broad spectrum uniform focal plane Fresnel lens |
| CN103715289B (en) * | 2013-12-23 | 2016-01-13 | 华北电力大学 | The method for designing of spectrum uniform focal plane Fresnel lens |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130130 |