The kcsb project scope encompasses the design, engineering, procurement, construction and commissioning of. Linear fresnel reflector based solar radiation concentrator for combined heating and power. Dish engine small scale applications, enginegenerator at focal point. This page concentrates on providing links, information and plans for build it. Optical design of compact linear fresnel reflector systems. 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. Modelling of cavity receiver heat transfer for the compact linear fresnel reflector. A smallscale linear fresnel reflector sslfr has the configuration of a. 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. In this case, two axes tracking of the sun is done to allow both seasonal and daily solar movement, the axes are normally either tip tilt or azimuth altitude. 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. Parametric study of the small scale linear fresnel re.
The basic principle remains the same with the mirrors collecting solar power which is then utilized to generate steam which in turn drives a turbine. The compact linear fresnel reflector clfr, shown core. A compact linear fresnel reflector clfr also referred to as a concentrating linear fresnel. Solar selective absorbing coating for concentrating collectors. Response to changes in ambient temperature and external convection coefficient, as well as changes in cavity depth and width have been studied, for the purpose of determining the design parameters for an initial prototype plant. It is called the compact linear fresnel reflector clfr technology. Southwest and contiguous parcels of dry, flat land. The third technology to be introduced is compact linear fresnel reflector or known as concentrating linear fresnel reflector clfr. Application of concentrating solar power technology csp. Clfr technology is an alternative form of the fresnel reflector field that has been heretofore overlooked. To address water limitations and environmental regulations, air. Compact linear fresnel reflector clfr power plant technology. This thesis addresses a broad range of design issues relating to the clfr. Linear fresnel reflector lfr also based on solar collector rows or loops.
The limited ground coverage of a classical fresnel system can be. Show full abstract system, called the compact linear fresnel reflector system and a project to produce an initial 95 mwth solar array. Design and analysis of rooftop linear fresnel reflector solar concentrator k. The total energy demand of mena is small compared to other regions. The principle of this lens is the breaking of the continuous surface of a standard lens. Solar tower major engineering structures but high temperatures. These modular reflectors focus the suns energy onto elevated receivers, which consist of a. Linear fresnel reflector lfr systems produce a linear focus on a downward facing fixed receiver mounted on a series of small towers as shown in fig. The linear fresnel collector concept uses a number of rows of relatively small oneaxis.
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. Industrial solar fresnel collector video industrial solar. Alternatively, an innovative concept of compact linear fresnel reflector clfr system with multiple receivers is developed to minimize energy losses as depicted in fig. Simulation of a linear fresnel solar collector concentrator. Pdf this paper evaluates compact linear fresnel reflector clfr concepts suitable for large scale solar thermal electricity generation. A linear fresnel reflector is constructed by taking equal width strips out of a parabolic mirror and translating the strips on to a horizontal surface in such a way that all the strips have bases with the same y coordinate. Optimization of the distribution of small scale linear fresnel. During 1961, clfr was invented by giovanni francia in italy. Behnia department of mechanical and manufacturing enginee ring university of new south wales email.
Linear fresnel reflectors use long, thin segments of mirrors to focus sunlight onto a fixed absorbed at a common focal point of the reflectors. Stela world stecsp technologies linear fresnel reflector. Compact linear fresnel reflector the solar eclipse. Heliostats are tracking mirrors that reflect solar energy onto a fixed target. 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. Scope and application of solar thermal energy in indiaa. Computer simulation of linear fresnel reflectors duration.
How to construct a compact linear fresnel reflector. A second linear concentrator technology is the linear fresnel reflector system. Master thesis the potential of fresnel reflectors for. Nevertheless, only few researches have been conducted to evaluate optical design and performance of the clfr system. It is intended to be a lowcost solar thermal energy system for medium to largescale thermal energy capture. Adding a blend to the water can further increase the evap. Solutions for power generation engineered valves and. A linear fresnel solar collector concentrator may have a lower efficiency than the other concentrating geometries, but the likely reduced cost may well compensate that, providing a solution for costeffective solar energy collection on a large scale. Compact linear fresnel reflector as a basic fresnel system is scaled up, the spacing between the outer lines of mirrors must be increased to avoid shading. These systems lower cost and increase output by using absorbers that share mirrors. Combining several systems in one significantly decreases the thermal. 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.
The array will be used as a retrofit preheater for a coal. 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. Pdf modelling of cavity receiver heat transfer for the. Opportunities for solar thermal power generation in india solar thermal power generation can. Different from the lfr system, one receiver is installed at each side of the solar field, which allows. Design and analysis of rooftop linear fresnel reflector. Concentrating solar collectors use shaped mirrors or lens to provide higher temperatures that flat plate collectors. Skyfuel commercial development of an advanced linear fresnel solar millennium advanced hightemperature trough collector development reflectors 3m cleanable and hardcoat coatings for silvered polymeric mirrors abengoa development of an advanced polymeric reflector. It uses flat mirrors as opposed to parabolic mirrors that are used in solar parabolic troughs. 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.
Compact linear fresnel reflector technology by cnim. Compact linear fresnel reflector clfr system employing multiple receivers is promising with better optical performance and cost effectiveness compared to linear fresnel reflector lfr system, especially for applications with limited ground availabilities. The basic principle remains the same with the mirrors collecting solar power which is then utilized to generate steam which in turn drives a. 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. The most common designs are linear fresnel reflector lfr and compact linear fresnel reflectors clfr. In this approach, ground level reflector rows aim solar beam radiation at a downward facing receiver mounted on multiple elevated parallel tower lines. We are pleased to be able to present you with this overview of the outstanding portfolio of products and services we offer. Abstract development of a cavity receiver for the compact linear fresnel reflector is presented. Linear fresnel collectors a technology overview sfera. Pdf compact linear fresnel reflector solar thermal. Csp specific conditions to produce power, such as areas where direct sunlight is most intense e. Long rows of flat or slightly curved mirrors move independently on one axis to reflect the suns rays onto the stationary receiver.
From then on, lots of research was gradually carried out. A linear fresnel reflector is another type of solar power collector. Theoretical elements for the design of a small scale linear fresnel. Patented mirror support design for an easy local construction 2. Areva solar compact linear fresnel reflector clfr using solkote on stainless absorber tubes solkote is a perfect technology for the solar concentrating startup because it requires minimum capital investment, a simple paint sprayer. The principal design flaw, however, is that shading is produced from adjacent reflectors, lowering the overall output of the system. In order to enhance the utilization of land area and reduce the shading created by adjacent reflectors, mills and morrison invented the multiabsorption towers technology based on compact linear fresnel reflector which was suitable for largescale solar thermal power plants 4, 5.
In india, reliance power has completed and connected to the grid a 125 mw compact linear fresnel reflector plant, designed and constructed by areva solar. Transient modelling of cavity receiver heat transfer for the compact linear fresnel reflector j. A compact linear fresnel reflector superimposes two parabolic mirrors facing oposing directions and decomposes. This is a problem for trough and dish systems as well. Figure 4 compact linear fresnel reflector clfr technology dish stirling a dish stirling or dish engine system consists of a standalone parabolic reflector that concentrates light onto a receiver positioned at the reflector s focal point. Numerous mirrors are used to absorb the solar energy and transfer it to the absorber which built correspondingly with the reflectors. Fresnel the tilting linear system the kimberlina solar thermal power plant with clfr technology compact linear fresnel reflector, which uses an array consisting of many parallel fresnel collectors with flat mirrors, is situated in the californian city of bakersfield in the united states. Cs energy have selected compact linear fresnel reflector clfr solar thermal technology supplied by areva solar due to the clfrs ability to directly generate superheated steam. Reducing water consumption of concentrating solar power electricity generation report to congress. Transient modelling of cavity receiver heat transfer for. Parallel mirrors at ground level focus light onto a linear radiationabsorber positioned above them.
The radiation is reflected and concentrated onto fixed linear receivers mounted over the mirrors, combined or not with secondary concentrators. Pdf compact linear fresnel reflector solar thermal powerplants. Concentrated solar thermal cst systems summary linear trough or compact linear fresnel reflector relatively cheap but low temperature operation 250oc 300oc gives rise to inefficient generation and storage. Fresnel reflector an overview sciencedirect topics. Pdf system modelling of the compact linear fresnel reflector. The compact linear fresnel reflector is a solar thermal energy. This is done to achieve maximum annual beam radiation with a high. Pdf the compact linear fresnel reflector is a solar thermal energy system. Linear fresnel reflector an overview sciencedirect topics. System modelling of the compact linear fresnel reflector.
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