The shape of a parabola means that incoming light rays which are parallel to the dish s axis will be reflected toward the focus, no matter where on the dish they arrive. Electricity generation from a solar parabolic concentrator. Modulating a solar parabolic dish to produce boiled water 226 along the optical axis quincy 9. Parabolic dish could be applied individually in remote locations, or grouped together for smallgrid village power, 10 kw or endofline utility 100 mw applications. Optical design of a solar parabolic concentrating collector based on trapezoidal reflective petals 715 is carried out to improve the overall performance of system. Pdf an overview on parabolic trough solar collector. Parabolic dish concentrating systems use parabolic dish shaped mirrors to focus the incoming solar radiation onto a receiver that is positioned at the focal point of. How do solar parabolic dishes work solar power world. The tracking system is dual axis tracking system with slew drivers. It is typically determined by testing a collector over a range of high temperatures.
Abstractthe parabolic dish solar collector technology is very useful as it is used for approximately all solar energy applications such as steam and power generation, water heating, air heating etc. The parabolic reflector transforms an incoming plane wave traveling along the axis into a spherical wave. The site can be a bit of a challenge to find stuff on, but its worth the effort. Using the sun energy to heat water is not a new idea. A comparative study between parabolic trough collector and. Jan 23, 2010 the solar dish stirling technology is well beyond the research and development phase, with more than 20 years of recorded operating history. Solar power csp the concept of harnessing the sunos energy dates back as far as 1774 when antoine lavoisier created a large device that had a glass lens that focused the sunlight into a focal point over material for combustion. Best for fast parabolic dish collector, one or more parabolic dishes concentrate solar energy at a single focal point. A parabolic trough solar collector uses a mirror in the shape of a parabolic cylinder to reflect. Deac3608go28308 with the national renewable energy.
Modeling and experimental investigation of parabolic trough solar collector. The proposed te solar concentrator was composed of a parabolic dish collector with an aperture of 1. Apr 30, 2015 works pretty good and generates steam. The solar collector is a closed box composed of the following principal parts. Pdf performance analysis methodology for parabolic dish solar. A wide variety of solar parabolic dish options are available to you, such as vacuum solar collector, pressurized, and manifold collector. This paper traces development of parabolic dish solar concentrator.
A wide variety of parabolic solar concentrator options are available to you, such as type, application, and pipe material. The heliocentric longitude h, geocentric global coordinates and local topocentric sun coordinates were considered in the modeling equations. Design and analysis of a parabolic trough solar concentrator. This is the concave dish made of wood and lined with an aluminium sheet. About 33% of these are solar collector, 12% are solar energy system. 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. Abstract this paper presents the design of a parabolictrough solarcollector system for water desalination in gaza, collectoraperture and rimangle optimization together with the receiverdiameter selection are presented. Parabolic dish technology, for concentrating solar power csp applications, has been.
One bitebased te module installed on the receiver plate was used to convert the concentrated solar thermal energy directly into electric energy. 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. This parabolic trough 73% efficient solar power world. The new solar collector designs definition of ls2 parabolic trough concentrator figure 1 shows the schematically a traditional parabolic trough concentrator, which is made by bending a sheet of reflective material with reflectivity 96%. 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.
The two new designs of parabolic compound solar collector are. More than one hundred years ago black painted water tanks were used as simple solar water heaters in a. Designation and modulation of solar dish concentration of 2 meters for water heating application has been proposed 10 and solar steam has been achieved 11. Parabolic dish solar thermal system csp plant manufacturer. Himin is central tower solar thermal system manufacturer in china, we completed the production and construction of asias first mwlevel tower solar thermal power station. So, solar concentrator for process heat requirements of community. Concentration ratio is defined as the aperture area divided by the receiverabsorber area of the collector. Parabolic dish concentrating systems use parabolic dish shaped mirrors to focus the incoming solar radiation onto a receiver that is positioned at the focal point of the dish, like its illustrated in the image below. The optical efficiency of parabolic dishes is considerably higher than that of trough, lfr or power tower systems because the mirror is always pointed directly at the sun, whereas the trough, lfr and power.
Mechanical design of a low cost parabolic solar dish. When this is done, the cofocal point then becomes a cofocal line. Parabolic dish reflector pdr point 100 100500 heliostat field collector hfc point 1001500 1502000 note. 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.
Electricity generation from a solar parabolic concentrator coupled. The one common design option is to combine the optical. Each sca is an independently tracking parabolic trough solar collector made up of parabolic reflectors mirrors, the metal support structure, the receiver tubes, and the tracking. Pdf solar parabolic dish stirling engine system design. In the picture, 1 is the back plate, 2 is the end plate, 3.
A parabolic solar concentrator is a device that focuses light on a point to heat an object. Parabolic dish systems use satellitelike mirror dishes to focus the light onto a singlecentral receiver in front of the mirror. Method of a given focus and directrix was employed in the construction of the parabolic dish. Combining equatio ns 16 to 20, the collector thermal efficiency can be written as. Parabolic solar dish concentrators pdscs can be very useful in. In this paper work the performance analysis of parabolic solar dish collector is done with the use of different reflecting materials. Energy equations for computation of parabolictrough. Pdf status of parabolic dish solar concentrators researchgate. How solar parabolic dish concentrators work the green. Duanes redrok site is information central for diy heliostats and concentrating solar collectors. The equipment is well characterized with over 50,000 hours of onsun time. A parabolic or paraboloid or paraboloidal reflector or dish or mirror is a reflective surface used to collect or project energy such as light, sound, or radio waves. An economic parabolic dish concentrating system was built at the sustainable energy science and engineering center sesec at florida state university in tallahassee, florida.
The size of the concentrator is determined by its engine. The basic component of the solar field is the solar collector assembly sca. Pdf concentrated solar power csp technology promises solutions to. In a solar cooker, for example, food is placed at the focal line. Parabolic dish concentrating collector for indirect solar cooking. Modeling and simulation for different parabolic dish stirling engine designs have been carried out using matlab. It points out the types of situations where parabolic trough solar water heating is most likely to be cost effective and describes the espc process available to federal facilities for parabolic trough projects. Abst concentrating collector comprising a 2000 mm diameter, and. Parabolic trough collector ptc using solar coordinates. The solar dish stirling technology is well beyond the research and development phase, with more than 20 years of recorded operating history. An economic parabolic dish concentrating system was built at the sustainable energy. Water distillation system using parabolic dish solar collector.
Easiest way to make a parabolic solar collector is bamboo basket. As a key component of a parabolic trough solar collector, its thermal and optical performance as well as performance reliability determines the efficiency and economy of a. Dec 14, 2009 parabolic dish collector december 14, 2009 leave a comment go to comments using parabolic dishes is a welltested approach to concentrate solar radiation, and was an early experimental tool at many locations worldwide. Modeling of a parabolic solar collector system for water desalination. The effect of solar dish design features and factors such as material of the. The 2 by 4 was attached to the rectangular base of the parabolic frames with three 2 inch screws on each side. Unesco eolss sample chapters solar energy conversion and photoenergy systems vol. Ibrahim 2012 designed and developed a parabolic dish solar water heater for domestic hot wa ter applications. In these models, the sun rays are concentrated on linear path after reflecting from two faces. Design, construction, and test of a miniature parabolic. The concept of combining a parabolic dish concentrator with a te module to. The ls2 parabolic trough concentrator ptc tested at sandia national laboratory by dudley et al.
There are good designs here that can be built on a budget and without exceptional mechanical skills. Energy equations for the computation of parabolictrough collector efficiency using. You can also choose from solar thermal, water heater solar parabolic dish, as well as from glass solar parabolic dish there are 4 suppliers who sells solar parabolic dish on, mainly located in asia. Optical design of a solar parabolic concentrating collector. They are the solar concentrating system, the heat absorbing system, the heat storage system, the power generation system and the power plant control system.
Design, construction and testing of a parabolic solar steam. The shape of a parabola means that incoming light rays which are parallel to the dishs axis will be reflected toward the focus, no matter where on the dish they arrive. Modeling of a parabolic solarcollector system for water desalination. Patterned after the best of previous, time proven designs, the skytrough is a breakthrough in cost and constructability resulting from significant design and material innovations. Water distillation system using parabolic dish solar. Since 1984, the solar dish stirling equipment has held the worlds efficiency record for converting solar energy into grid. Lowcost concentrating solar collector for steam generation. Parabolic dish concentrating collector for indirect solar. Medium temperature solar concentrators parabolictroughs. The electricity has to be used immediately or transmitted to the gird as the system has no storage device.
The solar option and solar collector solar energy is a very large, inexhaustible of energy, the power from the sun intercepted. In this paper a parabolic dish collector system was designed for hot water generation and simulation of dish collector was also done. Brief introduction parabolic trough receiver is also known as heat collecting element hce. Introduction about 70% of the planet is covered in water, yet of all of that, only around 2% is fresh water, and of that 2%, about 1. Combining equations 16 to 20, the collector thermal efficiency can be written as. Make a parabolic mirror the cheap way paraboloid diy reflector direct tv hack solar reflective. The energy equations included the universal time, day n, month m, year y, delta t llongitude and latitude in radian. The parabolic dish solar concentrator system mainly consists of base support, concave dish frame, reflecting sheets, conversion unit and suntracking system as shown in fig. It was designed to provide 40 litres of hot water a day. Collector efficiency is defined as the ratio of energy collected by the working fluid to the direct normal solar radiation incident upon the collector aperture. Water distillation, saline water, solar dish collector, parabolic dish collector, coastal area. Using parabolic dishes is a welltested approach to concentrate solar radiation, and was an early experimental tool at many locations worldwide.
Performance analysis of parabolic solar dish collector for. Abstract this paper presents the design of a parabolic trough solar collector system for water desalination in gaza, collector aperture and rimangle optimization together with the receiverdiameter selection are presented. The authors wish to thank the concentrating solar power subprogram of the solar energy technologies office for program support and skyfuel inc. A comparative study between parabolic trough collector and linear. A more sophisticated parabolic collector trough can be designed, that avoids the need to track the sun altogether, by combining two parabolas together, to form the compound parabolic trough solar collector. To build the base of the solar collector two partial triangles were cut from the remaining plywood. Parabolic trough collector cost update for the system advisor. Science and engineering center sesec at florida state university in. Federal technology parabolictrough solar alert water heating. In 2010, i wrote how to build a tracking parabolic solar collector describing my self designed and built working prototype and test results.
It points out the types of situations where parabolictrough solar water heating is most likely to be cost effective and describes the espc process available to federal facilities for parabolictrough projects. The proposed te solar concentrator was composed of a parabolic dish collector. Design of a solar concentrator combining paraboloidal and hyperbolic. Its shape is part of a circular paraboloid, that is, the surface generated by a parabola revolving around its axis. Presentation of the new parabolic collector designs in this work, two new models are presented that their functions are based on blackbody theory. Parabolic dish concentrating collector for indirect solar cooking amos veremachi.
Parabolic trough collector cost update for the system. Later in 1878 a parabolic collector was showcased and reected. Solar collector the energy of the solar radiation is in this case converted to heat with the use of solar panel. Manual making of a parabolic solar collector gang xiao laboratoire j. 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. The site can be a bit of a challenge to find stuff on, but its worth the. In addition, sidebars provide indicators that a system. Design, construction and testing of a parabolic solar steam generator joshua folaranmi 120 parabolic dish. Bringing you a prosperous future where energy is clean, abundant, reliable, and. Modeling and experimental investigation of parabolic trough solar. Generation of a parabolic trough collector efficiency curve. I tried to show what a determined person can do with ordinary tools and materials, a good hardware store and a bit of perseverance a high performance do it. Concentration ratio is defined as the aperture area divided by. Research on te energy conversion with flat plate solar thermal collectors.
Utility scale parabolic trough solar concentrators harness the suns energy to make steam for electricity generation. Sep 03, 2010 utility scale parabolic trough solar concentrators harness the suns energy to make steam for electricity generation. I medium temperature solar concentrators parabolic troughs collectors e. A parabolic trough is a one dimensional parabola that focuses solar energy onto a line.
They so far have the highest heatelectricity conversion efficiencies among all csp designs up to 30 %. Design, construction and testing of a parabolic solar. Generation of a parabolic trough collector efficiency. A compendium of solar dishstirling technology dtic. European research on concentrated solar thermal energy.
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