Parabolic trough concentrator courtesy acurex corporation. Pdf an overview on parabolic trough solar collectors. A parabolic trough is a one dimensional parabola that focuses solar energy onto a line. Review of solar parabolictrough collector geometrical and thermal analyses, performance, and applications. Research team rizwan masood, student of chemical engineering department, uet lahore. A technology which can contribute towards pakistans energy future. Sosa montemayor, design, construction, and testing of a parabolic trough solar concentrator for hot water and low enthalpy steam generation,journal of renewable and sustainable energy, 2012. The company, solar heat and power responsible for the project are about to start on a much bigger project in the united states.
The parabolic trough concentrator applies a single axis to track solar radiation, whereas the heliostat applies two axes to track solar radiation. There are good designs here that can be built on a budget and without exceptional mechanical skills. Introduction solar thermal is the fastgrowing technology now a day due to research being done to explore its applicability in different fields 1,2,3,20,24 and to enhance its thermal efficiency 4,21,22,25,28,30,32,38. A parabolic trough is a type of solar thermal collector that is straight in one dimension and curved as a parabola in the other two, lined with a polished metal mirror.
Skytrough normal incidence efficiency from combining collector optical efficiency and receiver heat loss results, for three radiation. This significantly magnifies the power of the sun, generating intense amounts of heat. The concentrator was implemented in 48 locations worldwide ranging from desert to snowice condition and provided thermal energy. Our contribution to sustainable development for humanity and the environment is a swedish solar energy system with unique versatility and installations the world over. Parabolic troughs, which are a type of linear concentrator, are the most mature csp technology with over 500 megawatts mw operating worldwide.
Measurement of solar intensity solar radiation flux is usually measured with the help of a pyranometer. In different areas concerning the amount of solar radiation, their standard size is approximately between 20 and 100 mwe. It is a smallsize concentrating solar collector, with a reflective mirror surface under the form of a parabolic cylinder which concentrats the sunlight to a receiver tube located at the focus line. Here is the list of benefits of using the solar concentrators. In different areas concerning the amount of solar radiation, their standard size is approximately between 20 and 100. Manual making of a parabolic solar collector gang xiao laboratoire j. Thus, within the national research and development institute for cryogenic and isotopic technologies, an automation system was designed and implemented in order to control the. The parabolic trough collector of the parabolic trough solar thermal system is a kind of device that collects solar energy by means of linear focus on sunlight. Geometrical collector losses in a location of 31n 29e at 21st march.
Theoretical study of the compound parabolic trough solar. Solar concentrators an overview sciencedirect topics. The objective of this research was to design a low cost parabolic solar dish concentrator with smallto moderate size for direct electricity generation. A receiver tube running in the center and the length of the trough is the focus point on which the sun generates solar energy. Alibaba manufacturer directory suppliers, manufacturers. Pdf an overview on parabolic trough solar collector. A pyranometer is an instrument which measures either global or diffuse. Literature survey reveals that the design point for parabolic trough solar field is 21st june, 12 o.
Parabolic trough solar thermal system parabolic trough. Solar concentrator made by georgeslouis leclerc left and solar furnace of antoine. It is sized so that the length of the parabolic curve is the same as the. It comes with the ability to increase the intensity of solar energy by concentrating the available energy over a large area on a smaller surface. There are many possible uses for solar concentrators. Nrel tests show the skytroughs thermal efficiency at 350 c 662 f to be over 73%, meaning that nearly three quarters of the solar radiation striking the trough surface is converted into thermal energy. Water is pumped through the receiver tube and is heated as it passes through the receiver tube.
Design, construction and evaluation of parabolic trough. Numerical study of porous finned receiver for solar. A parabolic solar concentrator is a device that focuses light on a point to heat an object. Putting all these thermal losses together and combining it with formula.
It is claimed that the advantage of combining these two concepts is a better. Small concentrators generate heat for cooking and domestic hot water. Pdf alternative designs of parabolic trough solar collectors. Symmetric twostage systems utilizing an imageforming primary parabolic concentrator in tandem with a nonimaging secondary concentrator partially. Design and analysis of rooftop linear fresnel reflector solar concentrator k. John ericsson constructed in 1880 the first known parabolic trough collector. A comparative study between parabolic trough collector and linear. Twostage solar concentrators based on parabolic troughs.
A parabolic trough is made of a number of solar collector modules scm fixed together to move as one solar collector assembly sca. Concentrated solar power csp systems use very different technology than photovoltaic systems. Theoretical study of the compound parabolic trough solar collector dr. Design, construction, and test of a miniature parabolic trough solar concentrator. A 3d numerical model is developed to evaluate the performance of the receiver with various configurations of porous inserts of square, triangular, trapezoidal and circular shapes. This paper is concerned with design, fabrication and experimental study to evaluate and compare the performance of two different ptcs, to produce hot water by coating and without coating black paint on receiver pipe. You have clicked a page that seems to be very popular. Cylindrical parabolic trough concentrator and solar tower. The basic design of the closed collector is given in section 2. Abstracteven though most variations of solar concentrators have palmistry guide in urdu pdf been studied or. Solar concentrators provide increased energy efficiency and produce electricity, heat and steam in the same system. Georges blog experiments and tests on concentrating collectors, led lighting. Abstractin this article a new receiver for parabolic trough concentrator is proposed to enhance heat transfer.
In this work thus, two technologies of solar concentration i parabolic trough cylinder ptc and ii solar tower st are initially integrated into a threepressure levels combined cycle power plant. Redressable parabolic trough solar collector back to home. Design and thermodynamic analysis of a novel solar cpv and. The design and performance of each concentrator will be explained and compared. This page describes the design, construction, and operation of a troughtype parabolic solar concentrator. Pdf parabolic trough collector ptc is the most established solar concentrating technology worldwide. Design and fabrication of parabolic solar concentrator with sole objective to define future projects to save natural gas 29jul08 2rizwan masood. A parabolic trough solar collector uses a mirror in the shape of a parabolic cylinder to reflect. The parabolic trough collector ptc is the most common type of hightemperature solar thermal technology, in which the heat transfer fluid is usually synthetic oil, molten salt or watersteam. Nov 25, 2010 parabolic trough solar concentrator 1.
The site can be a bit of a challenge to find stuff on, but its worth the effort. Parabolic trough solar technology is the most proven and lowest cost largescale solar. Many kinds of solar concentrators have been designed and used by solar concentrating pv cpv or concentrated solar power csp systems, for instance, parabolic trough concentrator, parabolic dish concentrator, tower concentrator, linear fresnel reflector lfr, fresnel lens concentrator, etc. Design and fabrication of parabolic trough solar water. More than 2,000,000 m2 of parabolic trough collector tech nology has been operating. If the said parabola is extended along an axis becoming a trough the solar rays are concentrated along a line through the focal point of the.
Although this concentrator could provide a high concentrati on, it requires larger field of view to m aximise. Nowadays, parabolic trough solar thermal plants are prevalent around the world. I medium temperature solar concentrators parabolic troughs collectors e. Conceptual study of a thermal storage module for solar. The performance of a parabolic trough concentrator for solar industrial process heat 1429 fig. Generation of a parabolic trough collector efficiency curve nrel. Candidate, asme student member school of mechatronics engineering harbin institute of technology 150001 harbin, china. The design and performance of each concentrator will be. Experimental performance evaluation of solar parabolic. The designing effort starts offwith the selection of certain parameters such as the aperture area and the diameter of the receiver to obtain the geometric concentration. This parabolic trough 73% efficient solar power world. How to make a solar water heater using parabolic trough. A parabolic trough solar collector you can build georges website with information on the parabolic collector and other interesting projects. A twostage solar concentrator by garrett dooley submitted in partial fulfillment of the requirements for the degree of master of applied science at dalhousie university.
To design and develop twisted tape and insert in receiver tube. Based on the input data, either by scenario simulation or by manual input, the. But in the solar tech race, is there room for more than one leader. Solar millenium parabolic trough power plants constitute the biggest share of the installed concentrating solar power technology. Archimede by enea, italy use molten salts both as heat trans. Modeling of a parabolic solar collector system for water desalination. The stirling engine together with a solar concentrator represents a solution for increasing energy e ciency. Sep 03, 2010 it is used to predict the performance of a given parabolic trough and compare competing technologies. Study of organic trust pdf a simple parabolic trough solar collector tested under the local. By rajesh chhabara parabolic troughs have dominated the concentrated solar thermal power industry for the last two decades, winning the confidence of utilities and investors. Certainly, the right size of the solar field is the first selection with regard to nominal electrical power. Later in 1878 a parabolic collector was showcased and reected the sunos energy onto a steam boiler which operated a small engine that ran a printing press. A high concentration of solar radiation is required when solar concentrators that contain reflective mirrors are used 21. Calculate the reflected hourly solar radiation by mirror.
Parabolic trough solar thermal electric power plants. Utilizing a solar parabolic dish concentrator is a common approach to obtain super high temperature by solar energy in commercial and academic areas. This kind of concentrator has the advantages of high concentration ratio and high flux density distribution. Recently, the development of sophisticated csp increased but mainly for large scale utility production with the use of parabolic troughs and parabolic sterling engine systems. Incidence angles are generated by solar positions at different time points on the aperture of the parabolic trough solar collector, resulting in cosine effect, endloss effect, and so on. Experimental test of the parabolictrough solar collectors. Designing a parabolic trough solar concentrator requires specifying. A distinct property that it has is that it can focus all the parallel rays from the sun to a single focus point, f as shown in figure 2.
Need of increasing thermal efficiency for solar parabolic trough collector. Solar two, usa and advanced parabolic trough plants e. Design, construction, and test of a miniature parabolic. The sunlight which enters the mirror parallel to its plane of symmetry is focused along the focal line, where objects are positioned that are intended to be heated. Design and analysis of rooftop linear fresnel reflector. The initial installation cost of these parabolic trough solar collectors consti tutes the. Pdf structural design criteria for steel components of. Our contribution to sustainable development for humanity and the environment is a swedish solar energy system with unique. Hameed jassim khalaf mechanical engineering departmentuniversity of tikrit abstract theoretical design of compound parabolic trough solar collector cpc without tracking is presented in this work. The parabolic trough solar collectors uses stainless steel sheet in the shape of a parabolic cylinder to concentrate and reflect the radiations from the sun towards an absorbing receiver tube made of galvanized iron g. Medium temperature solar concentrators parabolictroughs.
Solar parabolic trough uses mirrored surfaces curved in a linearly extended parabolic shape. A scm could have a length up to 15 metres 49 ft 3 in or more. Distinguishing between parabolic trough power plants, fresnel power plants, solar tower. The parabolic trough collector ptc is the most common type of hightemperature solar thermal technology, in which the heat transfer fluid is. Integrated solar combined cycle system isccs the isccs is a new design concept that integrates a parabolic trough plant with a gas turbine combinedcycle plant. A parabolic trough solar collector uses a mirror in the shape of a parabolic cylinder to reflect and concentrate sun radiations towards a receiver tube located at the focus line of the parabolic cylinder. In a parabola all of the incoming rays from a light source in this case the sun are reflected back to the focal point of the parabola. The trough has a parabolic crosssection consisting of that portion of the parabolic curve between its intersections with the latus rectum. There have also been variations of parabolic trough systems like the integrated solar combined cycle iscc which combines troughs and. The parabolic trough collectors ptc consist of solar collectors mirrors, heat receivers and support structures. Most electric power plants use some form of fossil fuel as the thermal heat source to boil water into steam.
Mechanical design of a low cost parabolic solar dish concentrator. The assumed solar field area in both cases was about 1. Lowcost concentrating solar collector for steam generation by john dascomb a thesis submitted to the department of mechanical engineering in partial ful llment of the requirements for the degree of master of science degree awarded. A new design concept for concentrating solar parabolic mirrors lifang li1 ph. While nonimaging concentrators can approach the thermodynamic limit of concentration, they generally suffer from poor compactness when designed for small acceptance angles, e. Design of a parabolic trough solar collector using a. Structural design criteria for steel components of parabolic trough solar concentrators. If the said parabola is extended along an axis becoming a trough the solar rays are concentrated along a line through the focal point of the trough. The moment for solar power tower technology has arrived. It is widely used as a reflecting solar concentrator. Apr 12, 2010 designing a parabolic trough solar concentrator requires specifying. Usually used in collaboration with a heat exchange unit, a device that moves heat from the focused light to moving fluid inside the heat exchange, a parabolic solar concentrator can be made easily in your own backyard.
Design of a 25 mwe solar thermal power plant in iran with. Combining these, we get the temperature drop of the film. Such model can be installed in rural areas which are not connected to governmental grid. Solar concentrators rensselaer polytechnic institute. Abstract this paper presents the design of a parabolic trough solar collector system for water desalination in gaza, collectoraperture and rimangle optimization together with the receiverdiameter selection are presented. Plc automation and control strategy in a stirling solar. The bending of a receiver tube in twophase flow under stratified conditions when water is first introduced to the hot steel receiver of a 14. Duanes redrok site is information central for diy heliostats and concentrating solar collectors. Csp systems use the sun as the thermal heat source as opposed to the photon energy of the sun as pv systems do. The research team performed a bottomup build and cost estimate for two stateoftheart parabolic trough designsthe skytrough and the ultimate trough.
In different areas concerning the amount of solar radiation, their standard size. To design and develop copper tube as a receiver for solar parabolic trough collector. Unesco eolss sample chapters solar energy conversion and photoenergy systems vol. Performance simulation for parabolic trough concentrating solar. Parabolic trough collector cost update for the system advisor. For focal solar concentrators such as disc parabolic concentrators or other circular symmetrical concentrators, the symmetry axis needs to remain parallel to sunlight. Youtube demo concentrateur solaire cylindroparabolique a suivi automatique. In this video new physicist shows you how to build a high efficient solar water heater using zinc sheet and copper pipe. Most concentrated solar power plants use the parabolic trough design, instead of the power tower or fresnel systems.
Collector is designed with simple parabolic equations. Innovative technology solutions for sustainability. Zarza encyclopedia of life support systems eolss figure 2 refers to a ptc with a singleaxis tracking system i. The parabolic contour is supported by steel framework and mounted. Zarza encyclopedia of life support systems eolss the concentration ratio of a ptc is the ratio between the collector aperture area and the total area of the absorber tube. In solar power plants, steam is produced by concentrating the solar radiations through mirrors that are in the shape of a flat, dish or parabolic trough 20.
It will also analyse on some of the existing solar concentrators used in the solar technology for the past four decades. Parabolic troughs are one of the lowest cost solar electric power options available today and have. Solar energy conversion and photoenergy systems vol. Himin is parabolic trough solar thermal system manufacturer in china, our rough solar thermal power generation system is now the most proven largescale power system with the lowest cost. Giannuzzi 2, adio miliozzi 2 and daniele nicolini 2 1university of padua 2enea agency for new technologies, energy and environment italy. Pdf fabrication of parabolictrough concentration for.
The parabolictrough solar concentrators are one of the basic elements of. A parabolic solar concentrator is a curved array of mirrors that reflects all incident light onto a single point. New trends in designing parabolic trough solar concentrators and. The parabolic trough collectors ptc consist of solar collectors mirrors, heat receivers and. The initial installation cost of these parabolic trough solar collectors consti tutes the main. Parabolic trough collector, a novel design for domestic. Key equipment of a parabolic trough power plant mainly includes a concentrator, a. Lowcost concentrating solar collector for steam generation. Chapter 5 parabolic trough technology authors matthias gunther1 michael joemann1 simon csambor1. Recent studies on the potential of the nanofluids on the performance enhancement of the parabolic trough collectors seem to be pointing toward development of the next generation of the solar. Parabolic trough solar power technology although many solar technologies have been demonstrated, parabolic trough solar thermal electric power plant technology represents one of the major renewable energy success stories of the last two decades. Concentrator accuracy is achieved by combining prefabrication.
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