Lowcost concentrating solar collector for steam generation. Pdf simulation and modelization of parabolic solar. Dishengine system concentrating solar power basics. Concentrator photovoltaics cpv also known as concentration photovoltaics is a photovoltaic technology that generates electricity from sunlight. Ukrainian solar concentrator unusual parabolic dish youtube. The size of the concentrator is determined by its engine. Us7051529b2 solar dish concentrator with a molten salt. Performance analysis methodology for parabolic dish solar. Parabolic dish systems use satellitelike mirror dish es to focus the light onto a singlecentral receiver in front of the mirror. The same researchers 6 developed also a mathematical model of a solar parabolic dish concentrator based on square flat facets, which is. Science applications international corporation produced a 22 kilowatt hybrid solar dish stirling power system by upgrading an existing solar dish concentrator system with advanced, fixed.
The post is placed via a boom onto the foundation followed by the solar concentrator. Hi friends, in this article, i am going to discuss about types of concentrating solar collectors and hope you will find it useful. A solar concentrator makes the use of lenses to focus solar energy at one place to increase the efficiency of solar panels. Thanks and congratulations for the rebirth of dish stirling csp. Renewable energy resources, solar energy, solar concentrator. The study found that concentrated solar power could account for up to 25% of the worlds energy needs by 2050. Schematic of a dish engine system with stretchedmembrane mirrors. The solar flux pattern reflected to the receiver is evenly distributed over the four quadrants of the receiver without containing any hot spots. This method of concentrated solar collection has the advantage of high efficiency and low cost. A compendium of solar dishstirling technology osti. The design of sg4 is a systematic optimisation for cost effective mass production for utility scale power systems.
The designers and engineers behind the solarbeam tm foresaw the need to engineer an affordable system capable of producing high thermal energy. Basler sca140017gm with a manual zoom lens ricoh flcc6z1218vg. Concentrators dish engine systems utilize concentrating solar collectors that track the sun in two axes. Parabolic dish concentrators offer the highest thermal and optical efficiencies of all the current concentrator options 2.
Parabolic solar concentrator tracking system solar. Design and simulation of a solar dish concentrator with. Design and analysis of a highefficiency, costeffective. A compendium of solar dishstirling technology technical. Parabolic dish solar concentrators have shown high conversion efficiencies and high operating temperatures, of the order of 750 o c, at annual efficiency of 23% and 29% peak 30, 31. Optical design and experimental characterization of a solar. Wind flow around parabolic dish solar concentrators can significantly affect the loss of heat from the receiver, and thus the performance of these systems.
This paper presents the development of a solar parabolic dish collector prototype for rural areas with high solar resource. Because of the perceived high production cost of this concentrator, the department of energys solar thermal program is developing stretchmembrane technology for large 75 kwt solar concentrators for integration with receivers and engines in 25 kwe dish stirling systems. Solar concentrators solar concentrator is a device that allows the collection of sunlight from large area and focusing it on a smaller receiver. Using the dish concentrator directly to drive the solar desalination has several shortcomings. In this paper, an attempt has been made to conduct an experimental study on small scale solar parabolic dish thermoelectric generator. Therefore, efforts are being made to replace our existing cooking fuel with renewable energy source. The 9 meter hybrid parabolic solar concentrator solar dish continuously tracks the sun throughout the day using a dual axis tracker enabling the system to harvest maximum solar energy from early sunrise to late sunset. This allows this type of collector to achieve the highest concentration ratios among all other type of solar collectors. A parabolic dish solar concentrator is a surface that can be mathematically defined as. Pdf design of a solar dish concentrator according to the needed. Solar radiation energy to internal energy of transport medium. Keyword solar dish, solar concentrator, focus concentration, parabolic reflector, thermal. Pdf mechanical design of a low cost parabolic solar dish. It is not applied in the disc solar distiller usually.
A solar power system capable of storing heat energy and converting sun light to electrical power. A conceptual representation of a solar concentrator used in harnessing the power from the sun to generate electricity is shown in figure 1. Solar parabolic dish stirling engine system design, simulation, and thermal analysis. The designed parabolic concentrator is a low cost solar concentrator for medium temperature applications. These concentrators are mounted on a structure with a twoaxis tracking system to follow the sun. Unlike conventional photovoltaic systems, it uses lenses or curved mirrors to focus sunlight onto small, highly efficient, multijunction mj solar cells. The solar concentrator dish is designed to be assembled on the ground with the use of the dish mount mechanical system dmms that allows fast and easy installation of the trusses, reflective petals and skirting. Stirling receivers are typically about 90% efficient in transferring energy delivered by the concentrator to the engine. The dish stirling system dish stirling systems transfer concentrated solar radiation with high efficiencies into electrical energy. The entire sun irradiation that impacts the parabolic dish is reflected towards its focus, where the receiver is placed.
In this work, we simulated the operation of the concentrator dish stirling, this simulation allowed us correctly to predict the influence of the meteorological parameters direct normal isolation, ambient temperature, air density altitude, the angle elevation of the sun, and wind speed on the system performance and the net power produced. How do solar parabolic dishes work solar power world. In solar power plant applications that require only direct heat to power a system such as a stirling engine, the solarbeam focuses all the concentrated solar power on the receiver head of the stirling engine. Optical design configurations of the solar concentrating dish system for the. A solar dish concentrator is provided having a rotationally symmetrical elliptical shape for focusing an uniform flux density of solar radiation on a receiver. The thermal energy is extracted from the absorbercavity via a fluid and transported to a heat conversion system. A parabolic dish system consists of a parabolicshaped point focus concentrator in the form of a dish that reflects solar radiation onto a receiver mounted at the focal point. Solartron is the designer and manufacturer behind the revolutionary solarbeam tm parabolic dish. Mechanical design of a low cost parabolic solar dish. Parabolic dish concentrating collector for indirect solar. Introduction documentation background the australian national university campus is home to the sg4 prototype 500m2 big dish solar concentrator.
If only 25 to 30% of this can be saved by putting up solar concentrators, it will save import of 4. Development of a solar concentrator with tracking system. Pdf solar parabolic dish stirling engine system design. In addition, cpv systems often use solar trackers and sometimes a cooling system to further. Essentially the system consists of the following components. Numerous studies have examined the heat loss from various receiver geometries under natural and forced convection conditions. Clique solararun solar boiler and concentrated solar. Spain is the leader in concentrated solar power technology, with more than 50 governmentapproved projects in the works. The materials are easily obtainable and the design is simple and straight forward the concentrators can be made with readily available materials and simple tools.
Parabolic dish solar concentrators pdsc are a csp system composed of a reflective surface shaped as a paraboloid of revolution i. Large solar mirror collectors are a major subsystem of many solar energy systems, particularly for solar thermal generators. Thermal systems may use many collectors covering large sites 1. The cost per unit area of a solar concentrator is therefore much cheaper than the cost per unit area of a pv material. Design and construction of a solar collector parabolic dish. Vertical heat exchanger solar energy storage in salt 1 the purpose of a solar concentrator is to achieve high temperatures like a stove.
Pdf wind flow around a parabolic dish solar concentrator. A compendium of solar dishstirling technology dtic. Dish engine systems use a parabolic dish of mirrors to direct and concentrate sunlight onto a central engine that produces electricity. The increase in investment would be from 2 billion worldwide to 92. Receiver and generator concentrator individual dish engine systems currently can generate about 25 kw of electricity. In the picture, 1 is the back plate, 2 is the end plate, 3 is the cover, 4 is the receiver the glass tube surrounding. The viability of dish stirling csp was demonstrated in. Practical solar irradiance data in solar dish concentrator during day hours on 1 may in 6. In this type of collector, the concentrator tracks the sun with the help of rotation along the two axes. A reflective surface, metalized glas s or plastic, reflects incident solar radiation to a small region called the focus. Design and simulation of a solar dish concentrator with spiralcoil smooth thermal absorber sasa r. Design and analysis of a highefficiency, costeffective solar concentrator john h.
Steam induces high pressure and explosion, so a solar concentrator. How a solar concentrator works with direct heat and a free piston stirling engine. Now we will see how the solar concentrator melts an aluminum can, and this is only a demonstration of the possibilities of solar energy for a very important environmental problem of the. Pdf design and study of portable solar dish concentrator. Solar concentrators rensselaer polytechnic institute. Know more about the specifications and advantages of solar concentrators.
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 glassmetal mcdonnelldouglas dish is the stateoftheart of parabolic dish concentrators. Pdf the objective of this research was to design a low cost parabolic solar dish concentrator with smallto moderate size for direct electricity. Design and study of portable solar dish concentrator citeseerx. The dish engine system is a concentrating solar power csp technology that produces smaller amounts of electricity than other csp technologiestypically in the range of 3 to 25 kilowattsbut is beneficial for modular use. The sustainability of our ecosystem is under threat due to the frequent use of fossil fuel for cooking purpose in the rural communities. Focus, heat losses, solar concentrator, thermal efficiency, temperature.
Stefanovi c, evangelos bellos university of nis, faculty of mechanical engineering, department for energetics and process technique, aleksandra medvedeva 14. Pdf design and performance analysis of microcontroller. The solar parabolic dish collector is fabricated using an unused satellite dish antenna fitted with polished aluminum sheet as concentrator. The solar energy technology has an inevitable role to play towards the provision of sufficient energy for both industrial and domestic demand. The fixed focus concentrator are successfully used for medium temperature application in different parts of the world. Types of concentrating solar collectors your electrical. Concentrating solar power csp is a unique renewable energy technology. Solar dish concentrators pdscs can be very useful in industrial process heat applications, which use about 20% of total oil consumption in india. Solar fire provides detailed plans and howto instructions for building three different sizes of concentrating solar collectors.
Pdf design analysis factors and specifications of solar dish. Ali abu ghalia belal abu teba massoud alnajjar supervisor. The parabolic dish concentrator is usually consisted of a. Sun tracking system design for parabolic dish solar. Most solar concentrator tracking technologies use an actuator for vertical tracking. The perfect concentrator has a parabolic shape, but some solar concentrators approximate this shape with 1.
The solar power system includes a solar collection system which gathers and transmits concentrated solar energy to an absorbercavity. The 9 meter solar concentrator uses a slew drive instead of an actuator for rocksolid. Parabolic dish geometry concentrates light in a single focal point, i. They so far have the highest heatelectricity conversion efficiencies among all csp designs up to 30 %. The suncatcher is a 25kilowattelectrical kwe solar dish stirling system which consists of a unique radial solar concentrator dish structure that supports an array of curved glass mirror facets, designed to automatically track the sun, collect and focus, that is, concentrate, its solar energy onto a patented power conversion unit pcu. Lowcost concentrating solar collector for steam generation by john dascomb. The parabolic solar dish concentrator provides good opportunity towards the provision of power and other.
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