A compact linear fresnel reflector clfr also referred to as a concentrating linear fresnel reflector is a specific type of linear fresnel reflector lfr technology. Four different assemblies of the structure that supports and shapes the mirror are documented and evaluated. Linear fresnel reflector an overview sciencedirect topics. Underlying principle the linear fresnel reflector is made up of multiple mirrors. A second linear concentrator technology is the linear fresnel reflector system. For the performed optimization, the intercept factor is determined as a function of the.
Linear fresnel reflector lfr solar power generation fig. Linear fresnel reflector systems for solar radiation. Concentrating solar power commercial application study. Linear fresnel reflector lfr everything about solar energy. Compact linear fresnel reflector how is compact linear. Pdf optical design of linear fresnel reflector solar. Coupling of a solidoxide cell unit and a linear fresnel. Fresnel reflector synonyms, fresnel reflector pronunciation, fresnel reflector translation, english dictionary definition of fresnel reflector. Linear concentration of solar energy by multiple flat or slightly curved surfaces basic components.
Different from the lfr system, one receiver is installed at each side of the solar field, which allows consecutive mirrors to redirect the sunlight to the two receivers. A linear linear fresnel reflector clfr also referred to as a concentrating linear fresnel reflector is a specific type of linear fresnel reflector lfr technology. The linear fresnel concentrating solar mechanism is composed of the parallel reflective surfaces usually flat mirrors, the metal structure, the tracking mechanism, the secondary receiver optionally and the receiver. The radiation is reflected and concentrated onto fixed linear receivers mounted over the mirrors, combined or not with secondary concentrators.
Parametric study of the small scale linear fresnel re. The industry growth is primarily attributed to simple design and use of cheaper flat glass mirrors associated with the technology. Learn about the advantages of our lf11 fresnel collector for solar process heat and direct steam generation. Pdf optical design of linear fresnel reflector solar concentrators. Jun 14, 2016 learn about the advantages of our lf11 fresnel collector for solar process heat and direct steam generation. The linear fresnel reflector main characteristics 2. Real suntracking linear solar concentrators imperfectly follow the solar disc, opera tionally sustaining both transverse and axial misalignments.
The most common designs are linear fresnel reflector lfr and compact linear fresnel reflectors clfr. During 1961, clfr was invented by giovanni francia in italy. This is a pdf file of an unedited manuscript that has been accepted fo publication. Compact linear fresnel reflector the solar eclipse.
Then, the two free extremes of the mirror are pushed up. Compact linear fresnel reflector and linear fresnel reflector are not proper nouns so linear and reflector should not be capitalized in the title and only fresnel should be capitalized the text. Development and lifecycle testing of a low cost waterborne. They are named for their similarity to a fresnel lens, in which many small, thin lens fragments are combined to simulate a much thicker simple lens. Numerous mirrors are used to absorb the solar energy and transfer it to the absorber which built correspondingly with the reflectors. Fresnel reflector an overview sciencedirect topics. Compact linear fresnel reflector technology by cnim concentrating solar power plant cnim groupe. Satyanarayana mechanical engineering department,k l university, guntur 522501 abstractmany applications of thermal energy, both in industrial and power sectors require medium temperatures ranging from 100c to 250c. About the linear fresnel reflector technology linear fresnel reflectors use stretched narrow segments of mirrors to focus sunlight onto a fixed metal collector pipe that runs axially above the array of reflectors located at a common focal point of the reflectors. Fresnel reflector definition of fresnel reflector by the. A linear fresnel reflector works by utilizing the fresnel lens effect which was first developed by french physicist augustinjean fresnel.
A linear fresnel reflector as a solar system for heating water. Linear fresnel reflectors use long, thin segments of mirrors to focus sunlight onto a fixed absorbed at a common focal point of the reflectors. A compact linear fresnel reflector clfr also referred to as a concentrating linear fresnel reflector is a specific type. Linear fresnel reflector system comprises of the following components. Fresnel lens prisms that make up a fresnel lens bend and magnify light rays, creating a single, concentrated beam of light. Linear fresnel reflector lfr solar mirrors are analogues of the parabolic trough mirror, just as central receiver heliostats are analogues of parabolic dish collectors. Parabolic troughs are the most commercially available technology. If optical efficiency of a parabolic trough collector is in the range of 7880 percent, a linear fresnel collector is 70 percent in the best case, says markus eck, from the institute of technical thermodynamics at dlr. Design and analysis of rooftop linear fresnel reflector solar concentrator k. Linear fresnel collectors a technology overview sfera summer school 2012 june 28, 2012, almeria, spain jan fabian feldhoff email.
This report details an analysis of the solar concentration performance of a linefocusing, flat base fresnel lens in the presence of small transverse tracking errors. Each of the fresnel reflectors comprises a fresnel surface with a focus, a radiating surface opposite the fresnel surface, and a photovoltaic element mounted to the fresnel surface, in thermally conducting contact with the radiating surface. Linear fresnel systems and the future for concentrated solar. Design and analysis of rooftop linear fresnel reflector solar.
Flat or slightly curved mirrors mounted on trackers on the ground are configured to reflect sunlight onto a receiver tube fixed in space above the mirrors. Energies free fulltext methodology for an optogeometric. An assembly that implies a curved, pleated aluminum rectangular plate with a thin. Organic rankine cycle orc powered by linear fresnel reflector lfr is a promising technology to harvest lowgrade heat sources to produce electricity. A fresnel lens is a flattened version of a convex lens. Linear fresnel reflector systems for solar radiation concentration.
Jan 14, 2010 but parabolic trough reflector performance is still superior. Linear fresnel reflector lfr technology has significant potential for development and major advantages of lfr system is that. Linear fresnel reflectors lfr are also based on solar collector rows or loops. Optimization of a trapezoidal cavity absorber for the linear.
Pdf this work is concerned with assessing the thermal performances of a solar water heating system which is. The optimal linear fresnel reflector nn individual presents an increase of 2. Optical design of compact linear fresnel reflector systems. But parabolic trough reflector performance is still superior. Mar 25, 2014 compact linear fresnel reflector technology by cnim concentrating solar power plant cnim groupe. Get more details on this report request free sample pdf linear fresnel csp market in 2018, was valued over usd 50 million. Linear fresnel reflector based solar radiation concentrator. The flat plate solar collectors are suitable for low temperature applications maximum up to 80 o c and parabolic concentrators are suitable for high temperatures applications above 300 o c. A trapezoidal cavity absorber for a linear fresnel reflector concentrator is analyzed and optimized via cfd simulation. Linear fresnel mirror solar concentrator with tracking. Circular fresnel reector with elliptical plate zones. The lens is manufactured of polycarbonate, which is high temperature resistant, and has a.
Parametric study of the small scale linear fresnel reflector. Performance analysis of the solar linear fresnel reflector. Pdf using ray track technology and geometrical analysis, this paper has presented novel design method which can be applied to mirror. Clfr individual reflectors can have the option of directing reflected solar radiation to at least two absorbers in linear systems. It was developed in the early 19th century, as a way to reduce the amount of glass material needed to build a convex lens specifically for large lighthouse lenses. Major components of lfr power generation include the liner reflective. But rather than using trough or dishshaped mirrors common to other concentrating solar systems, arevas technology uses a system of nearly flat mirrors, arranged in louverlike arrays and motorized to track the sun, to.
Acceptance testing procedure for linear fresnel reflector. The linear fresnel reflector technology receives its name from the fresnel lens, which was developed by the french physicist augustinjean fresnel for lighthouses in the 18th century. Linear fresnel systems, which are a type of linear concentrator, are active in germany, spain, australia, india, and the united states. Introduction the third technology to be introduced is compact linear fresnel reflector or known as concentrating linear fresnel reflector clfr. The following picture shows such a lighthouse fresnel lense. This book serves as a complete guide to designing linear fresnel reflector. In the case of parabolic reectors, the position of the feeder is.
The sunlight is further concentrated by a small linear concave mirror to the evacuatedtube absorber. Optical design, photothermal, linear, fresnel reflector 1. Solar death ray water aqua lens with kilowatt heat energy grid free energy. A methodology for an optical optimization of the intercept factor concerning a linear fresnel reflector is described to increase the amount of solar irradiation that will be delivered in the absorber for agua prieta, sonora. Arevas compact linear fresnel reflector technology uses mirrors to concentrate sunlight to directly create steam power. A system comprises first and second fresnel reflectors. Clfr is a linear fresnel reflector system with several or many linear absorbers in the system, allowing the construction of plants in the multimegawatt range fig.
However, in this case, the parabolic shape is achieved by almost flat linear facets. Linear fresnel reflector how is linear fresnel reflector. A fresnel lens uses the crosssections of the curvature of a convex lens, but flattens them onto planar surface. 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. This paper focuses on applying an integrated optimization technology to a solar thermal application, more specifically for the optimization of a trapezoidal cavity absorber of an lfr linear fresnel reflector, also called a linear fresnel. While working on receiver always use winch and make sure that the hands remain free from oil. International journal of renewable energy researchijrer. Solar death ray water aqua lens with kilowatt heat energy grid free energy duration. Clfr individual reflectors can have the option of directing reflected solar radiation. In the present study, the proposed p2g plant is located near seville, south spain.
Linear fresnel reflector, simulation model, receiver tube, incident angle modifier, concentrator efficiency 1. Pdf a linear fresnel reflector as a solar system for. An assembly that implies a curved, pleated aluminum rectangular plate with a thin silveredglass. Linear fresnel reflector lfr technology sciencedirect. An array of linear narrow and long mirrors mounted on an axis which can be rotated to align to the sunlight individually. Thermal performance prediction of a trapezoidal cavity. The fresnel principle the linear fresnel reflector technology receives its name from the fresnel lens, which was developed by the french physicist augustinjean fresnel for lighthouses in the 18th century. Of interest is the construction of a solar field based on compact linear fresnel reflectors 3 made in the form of a solar adapter to existing thermal electric power stations in order to produce compressed hot water or saturated steam. Us20120006405a1 panelmounted photovoltaic system with. Arevas compact linear fresnel reflector technology helioscsp. Compact linear fresnel reflector clfr power plant technology. Compact linear fresnel reflector technology by cnim.
The principle of this lens is the breaking of the continuous surface of a standard lens into a set of surfaces with discontinuities between them. Pdf a linear fresnel reflector as a solar system for heating water. Compact linear fresnel reflector wikimili, the free. This paper presents a procedure for making facetted mirrors to use in linear fresnel reflectors, considering the design of the transversal geometry, materials, and structure configuration. Concentrated solar power market share global forecast. Alternatively, an innovative concept of compact linear fresnel reflector clfr system with multiple receivers is developed to minimize energy losses as depicted in fig. This book serves as a complete guide to designing linear fresnel reflector systems for solar radiation concentration, gives a complete overview of their theoretical analysis, and provides useful and efficient calculation procedures that can. The improved ability to use the fresnel approach delivers the traditional benefits of such a system, namely small reflector size, low structural cost.
These systems lower cost and increase output by using absorbers that share mirrors. Progress in the design and the applications of linear. The idea is to place both horn antennas at different angular positions with respect to the reflector, so we have separated the design of the system in the following steps. Abstract to increase the efficiency of concentrated solar power csp plants, the use of optimization methods is a current topic of research. Material and component specifications linear fresnel reflector. This technology can be very useful especially in remote and arid areas. The first three of these technologies use the heat collected from the sun. This work presents the study of a smallscale lfrorc power plant installed in errachidia, morocco. Stela world stecsp technologies linear fresnel reflector. Pdf design and analysis of rooftop linear fresnel reflector. The first of these is giving the concentrator the ability to follow the sun, that is, the mirrors and the frame of the reflector automatically rotate as the sun moves throughout the day. Basic linear fresnel reflector configuration seen from one end. Fresnel reflector article about fresnel reflector by the.
These mirrors are capable of concentrating the suns energy to. In this paper efforts are being made to design a rooftop linear fresnel reflector solar concentrator lfrsc system. This book serves as a complete guide to designing linear fresnel reflector systems for solar radiation concentration, gives a complete overview of their theoretical analysis, and provides useful and efficient calculation procedures that can be used to model and develop their practical application. This paper discusses the utilization of the linear fresnel reflector system as an effective, cheap and easy way of sunlight capture in operation and maintenance compared to parabolictrough system. Linear fresnel and power tower technologies are presently being planned as commercial plants, but none have yet been built in the u. This manual is to be used in conjunction with the solar scheffler dish.
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