We could custom the projection screen according to client requirement. One important factor in the analysis of solar concentrators is the concentration ratio. In this paper, two different reflective surfaces are used to increase the optical efficiency of a parabolic trough solar collector. Solar concentrator is a device that allows the collection of sunlight from a large area and focusing it on a smaller receiver or exit. Measurements were made at three solar beta angles, 0, 12, and 24 degrees, with the lens receiver articulation at the appropriate position for each beta angle. The performance of fresnel concentrator is checked by testing the efficiency of solar cell, and the experimental results prove that the proposed design method of fresnel concentrator surfaces. Design, construction, and test of a miniature parabolic. Design and performance of nanostructurebased luminescent. Solar fresnel lens solar concentrator for ecofriendly power. This special fresnel lens, 4 array fresnel solar concentrator optical acrylic lens for green energy and ecofriendly power is a lowcost, lightweight optical material used for focusing sunlight to solar panels to ensure operation under highflux density. Development of a compound parabolic solar concentrator to increase solar 167 12. Fresnel lenses for solar applications require high precision tracking. Fresnel lens solar concentrator derivations and simulations. Ultralightweight fresnel lens solar concentrators for.
A method for the optical characterization of a solar concentrator, based on the reverse illumination by a lambertian source and measurement of intensity of light projected on a far screen, has been developed. Fresnel lens is a noteworthy solar concentrator to increase the density of the solar flux energy xie et al. Solar concentrator modules with siliconeon glass fresnel. Thermal analysis of a linear fresnel lens solar collector with black body cavity receiver 107 the lens considered in this study is a flat nonimaging fresnel lens fig. We have designed and developed a nontracking solar concentrator system based on a combination of large fresnel lens and segmented mirrors. Planar microoptic solar concentration using multiple imaging lenses. The concentrator consists of two fresnel lenses, one concave and one convex. Ghosh a aschool of natural sciences, university of california, merced, 5200 north lake rd. Entech, using the shortcircuit current output of a 1cmwide triplejunction solar cell to determine the focussing performance of the 8.
A novel, highefficiency, extremely lightweight, robust stretched fresnel lens solar concentrator for space power is described. Gigantic solar fresnel lens 64 spot solar concrete crusher can melting with a solar scorcher. The primary concentrators of a solar concentrator system are those parts that first receive the solar irradiation, and first concentrate it. Smestad hewlett packard company, optoelectronic division, 370 w.
The designed concentrator surfaces are fabricated by ultraprecision turning technology. For sale by the national technical information service, springfield, virginia 22161. Compact linear fresnel reflector technology by cnim. Optical design and characterization of solar concentrators for photovoltaics 4 ruption of the translational symmetry when the microstructured reflectors were introduced. Solar concentrators put one of these lenses on top of every solar cell.
Us6075200a stretched fresnel lens solar concentrator for. Concentrators work best when there is a single source of light and the concentrator can be pointed right at it. The w are spectral weighting factors, w is the lens width, ay the serration width, and the summations, c and i, are over all lens serrations and all solar wavelengths l. Cnim is a specialist in the construction of complex nonfossil energy power plants waste, biomass.
The newly released documentation provides information allowing anyone to manufacture a fresnellens solar concentrator called diversity capable of delivering 260 degrees centigrade in the. Tiny lenses and mirrors may bring concentrating solar. Ultralightweight fresnel lens solar concentrators for space power. The new concentrator system was developed by nedo project from 2001 to 2003. In order to compactly represent a large variety of lens configurations, some variables.
A final report for the first phase of the project has previously been delivered. Sun and concentrator arrays on earth, wattsdollar is king, and our cost model shows that simple linefocus lens modules using lowcost onesuntype silicon cells are still more costeffective than more complex. Design and machining of fresnel solar concentrator surfaces. Design and analysis of rooftop linear fresnel reflector. The demand for process heat particularly low pressure steam is increasing in recent past. The overall efficiency of flsc system is found to be 51% and can generate process steam required for the industry. Solar concentrating systems can also be used to power desalination systems, either by directly providing heat energy or via conversion to electrical energy. The dashed curve shows the distribution formally corresponding to standard thermodynamicphotometrical limit. Ultrallghtwelght fresnel lens solar concentrators for space power.
Optical simulation and experimental verification of a. The concentration ratio is defined as the ratio of the area of the aperture of the concentrator to the area of the receiver that is reflected upon by the concentrator. Almost everyone has had experience with a light concentrator. Aug 25, 2012 the spherical glass solar energy generator uses the advantageous strategy of implementing a ball lens and specific geometrical structure to improve energy efficiency by 35%. There is a vast opportunity for solar concentrator designs to expand into other scientific fields and take advantage of these developed resources. The smallaperture area lenses are arranged as a panel with siliconeonglass structure where the glass plate serves as the front surface of a module. The size of the solar lens is 1040mm x 780mm, thickness is 3mm. Refracting type solar concentrator has been designed and developed which can be used for generating heat in the temperature range of 100c to 200c. Osa optical efficiency of solar concentrators by a. A conceptual representation of a solar concentrator used in harnessing the power from the sun to generate electricity is shown in figure 1.
This allows a substantial reduction in thickness and thus weight and volume of the lens, at the expense of reducing the imaging quality of the lens. Stretched lens array inflatable fresnel lens assembly for spacebased oper. Inflatable membrane solar concentration systems for. We make the big fresnel lens for solar concentrating. It will also analyse on some of the existing solar concentrators used in the solar technology for the past four decades. Design of a parabolic trough solar collector using a. Secondary optics for fresnel lens solar concentrators. Optical design and characterization of solar concentrators. Thermodynamic limits of light concentrators 101 fl 2 fig. The design and performance of each concentrator will be explained and compared. We present an optical design for a static solar concentrator for a photovoltaic cell scpv.
Fresnel lens solar concentratorderivations andsimulations. Whereas fresnel lens is a refractive concentrator, all the incident solar beams are concentrated on opposite side of lens, thus solar beams not attenuated on account of opacity of intervene absorber body as in latter case. Then the soe distributes all these rays over the cell surface in a homogeneous way. Thermal analysis of a linear fresnel lens solar collector with black body cavity receiver 109 ue uaedge ac,wm 2k. Studies on the use of fresnel lens for solar concentrator.
Sep 09, 2011 lens parameters that will be interrogated include focal length, index of refraction, prism fidelity, aperture, transmission and concentration ratio. This makes much more focused light come to each solar cell, making the cells vastly more efficient. Structured luminescent solar energy concentrators technische. The performance of the scpv was demonstrated using two settings.
A wide variety of fresnel lens solar concentrator options are available to you, such as pet, plastic. These systems use minimal volume, and then use compressed air to \blowup or expand once in space. Lens parameters that will be interrogated include focal length, index of refraction, prism fidelity, aperture, transmission and concentration ratio. Solar concentrator based multipurpose sunlight harvesting. You may be a researcher in some optical science interested in the core subject of this book. In atable membrane solar concentration systems for space. Mar 25, 2014 cnim is a specialist in the construction of complex nonfossil energy power plants waste, biomass. The lenses and mirrors focus sunlight on the solar cell like a magnifying glass.
The project is funded by gcep exploratory grant for the year 20102011. Pdf computer aided optimizationinnovation of passive. Secondary optics are used in concentrating photovoltaic cpv systems with fresnel lens primaries to increase the optical system efficiency by catching refracted light that otherwise would miss the receiver, better the tracking tolerance acceptance halfangle and enhance the flux uniformity on the cell. Design and analysis of rooftop linear fresnel reflector solar concentrator k. Building integration of concentrating systems for solar cooling. Which is the best solar thermal collection technology for electricity. This latter curve was not normalized for the real darkening of solar disk to its edge, which is considered for the remaining curves. Optical design of a static solar concentrator using fresnel. Highefficiency multijunction mj solar cells, being very. What temperature you can get by fresnel lens for solar.
Optical design of a static solar concentrator using. We offers a complete range of fresnel lenses sizes and types. The overall efficiency of fresnel lens solar concentrator is around 51% and can generate process steam required in the industry. Study of performance of fresnel lens solar concentrator. In concentrating solar power technology, the optical efficiency of solar collector influences collector performance significantly. This fresnel lens solar concentrator system is useful to generate low pressure steam for various applications like industrial process heat and steam cooking. Axially graded index lens agile as a nontracking solar. Without the solar tracking the system works poorly except when the sun is directly overhead. Simple optics and raytracing techniques are used to. The thermal performance and cost benefits of fresnel lens solar concentrator are also described. Each groove is approximated by a flat surface that reflects the curvature at that position of the conventional lens, so each groove behaves like an individual prism. The study of performance of fresnel lens solar concentrator and steam generation using fresnel lens solar concentrator is presented here.
The newly released documentation provides information allowing anyone to manufacture a fresnellens solar concentrator called diversity capable. Fresnel solar concentrator is one of the most common solar concentrators in solar applications. Mar, 20 a solar concentrator diy can seem like the easiest thing in the world if someone else is doing the hard work a guy who calls himself grant thompson used a fresnel lens from a dismantled old toshiba projection tv and shows the world on youtube how his diy solar concentrator can scorch nearly anything from pennies and concrete to eggs. Concentrated solar energy applications using fresnel. We are working on making a novel nontracking and low cost solar concentrator. Protective coatings are of prime interest for solar power concentrator arrays and ultralight inflatable fresnel lens solar concentrators. The conversion efficiency of a concentrator solar cell ingapingaasge was more than 37 % as high as 500 x optical concentration ratio. Solar concentrator modules with siliconeonglass fresnel lens panels and multijunction cells valery d. Solar concentrator pdf concentrators require direct solar illumination, and the optics or mirrors must move during.
Design and performance of nanostructurebased luminescent solar concentrators g. In atable fresnel lens techniques have been used with success 78, and have demonstrated. Design and analysis of a highefficiency, costeffective. Typical arrangement for a geometrical or passive concentrator. The fresnel lens focuses onaxis rays in maroon close to the soe surface. The peak efficiency of the concentrator module in the best. In order to compactly represent a large variety of lens configurations, some variables that define the fresnel lens will be parameterized. Expected optical performance of novel type multielement. It is easy to forget that you, dear reader, may not be one of those who work inexactly the same field as we do.
The scpv was designed and optimized using raytracing computer simulations. If youre still in two minds about fresnel lens solar concentrator and are thinking about choosing a similar product, aliexpress is a great place to compare prices and sellers. It has to be placed on the way of incident rays, which is an obstruction and attenuate the quantum of incident solar beams. Solar concentrator systems, industrial process heat, fresnel lens concentrator, optical. Well help you to work out whether its worth paying extra for a highend version or whether youre getting just as good a deal by getting the cheaper item. A vast amount of research is currently focused on perfecting each of these areas. The fresnel lens fl is a flat optical solar concentrator. The focal spot size is normalized for thousandth of concentrator diameter d c. Publishers pdf, also known as version of record includes final.
Pointfocus spectral splitting solar concentrator for. This is due to the fact that this system was intended for use with an one axis solar tracking system. It is a fundamental law of physics that for solar concentrators, if we want to. High performance fresnelbased photovoltaic concentrator. The use of solar energy requires optimizing each part of a photovoltaic system. Rumyantsev1 1ioffe physical technical institute, 26 polytechnicheskaya str. It is shown that the projected light intensity is simply correlated to the angleresolved efficiency of a concentrator, conventionally obtained by a direct illumination. It consists of a flexible fresnel lens attached to end supports, wherein said end supports stretch the lens to maintain its proper position and shape on orbit in space. Aug 07, 2018 what temperature you can get by fresnel lens for solar concentrator,more than degrees. Merced, ca 95343, usa bschool of engineering, university of california, merced, 5200 north lake rd. Renewable energy resources, solar energy, solar concentrator.
In addition, the change of refractive index due to temperature variation in outdoor operation conditions is also considered in the design. The principle of this lens is the chopping of the continuous surface of a standard lens into a set of surfaces with discontinuities between them. The lens is manufactured of polycarbonate, which is high temperature resistant, and has a. Aug 18, 2010 secondary optics are used in concentrating photovoltaic cpv systems with fresnel lens primaries to increase the optical system efficiency by catching refracted light that otherwise would miss the receiver, better the tracking tolerance acceptance halfangle and enhance the flux uniformity on the cell. Output explanation of this 2 fresnel lens cpc system the results of the 2 fresnel lens and one cpc system are quite poor. A practical optimization design is proposed, in which the solar direct light spectrum and multijunction cell response range are taken into account in combination, particularly for the fresnel concentrators with a high concentration and a small aspect ratio. For high fresnel concentrating pv or pvt systems, the second optical element soe is the key component for the high optical efficiency at a wider deflection angle, which is important for overcoming unavoidable errors from the tacking system, the fresnel lens processing and. Concentrated solar energy applications using fresnel lenses. Tiny lenses and mirrors may bring concentrating solar power. With a gentle nudge, the concentrators move relative to the cells, keeping sunlight in focus all day. Development of a compound parabolic solar concentrator to. Solar concentrators rensselaer polytechnic institute.1232 879 491 1555 509 162 793 640 504 259 1060 986 988 1028 1056 1074 1560 915 112 789 318 1481 1063 862 263 1017 1413 866 1287 142 876 965 180 1471 1468 286 319 700 1570 722 1232 519 508 1119 1253 939