A prototype model for generating electricity using solar. 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. Stirling engine project summer 2009 research paper. The grabcad library offers millions of free cad designs, cad files, and 3d models. Schematic of a dish engine system with stretchedmembrane mirrors. The 9m solar concentrator is designed to automatically track the sun and collect the suns energy and focus x concentrating solar energy onto a solar stirling engine receiver which in turn converts the focused solar thermal energy into gridquality electricity. Since 1984, the solar dish stirling equipment has held the worlds efficiency record for converting solar energy into grid. It could also run on a single brayton cycle, where air, helium or other gas is compressed, heated and expanded into a turbine. It discusses the assembly of stirling motor generators and elaborating on different components with a flow graph revealing that the functionality and energy stream.
A solar dishstirling system means a parabolic dish concentrator and a stirling engine combined to generate mechanical andor electrical output power. Modeling of dishstirling solar thermal power generation brain2grid. The equipment is well characterized with over 50,000 hours of onsun time. A solar dish stirling system means a parabolic dish concentrator and a stirling engine combined to generate mechanical andor electrical output power. That was when the us department of the interior cleared stirling energy systems ses and its development partner tessera solar to build two major plants using the technology. The maximum solar dish stirling engine output power estimation is 9707 w at 12. Stirling development was little during 19th century otto and diesel engines developed since 1860 boilers codes helped the wider usage of steam engines. Stirling energy systems, which once had giant utility contracts, heads to bankruptcy amid a price war and technology shift away from solar thermal. 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. Concentrators dish engine systems utilize concentrating solar collectors that track the sun in two axes. Generally, a parabolic solar dishstirling system is able to produce electricity at low, medium, and high temperature ranges 3,4.
This paper brings together the thermal, electric, and control system models of the various components within the dishstirling system. This paper presents an investigation on finite time thermodynamic ftt evaluation of a solar. The csp plant comprises 429 infinia powerdish systems, based on dish stirling csp technology, installed at the tooele army depot. The heater, cooler, regenerator, flywheel and piping systems were designed, constructed, and. Optimization of output power and thermal efficiency of. When properly aimed at the sun, incoming solar energy is focused on the heat cap of the engine and is converted to rotary motion. Currently, the contending stirling engines for dish engine systems include the solo 161 11kw e kinematic stirlin g eng ine, the kockums previously united stirling 495 25kw e kinematic stirling engine, and the stirling thermal motors stm 4 120 25kw e kinematic stirling engine. The hybrid dish stirling system thus has the advantage. Thus the stirling engine can be operated during times when the sun is covered with clouds or even in darkness. This paper brings together the thermal, electric, and control system models of the various components within the dish stirling system. Dishengine system concentrating solar power basics. Cool nasa animation of a free piston linear design.
Ftts has been applied to determine the output power and the corresponding thermal efficiency, exergetic efficiency, and the rate of entropy generation of a solar stirling system with a finite rate of heat transfer, regenerative heat loss, conductive. How a solar stirling engine works with the 9m solar concentrator. Modeling and simulation of a freepiston solar stirling. The imperial valley solar and calico projects would have summed almost 1. The dishstirling design was also optimised for cost and performance to deliver a 10kwe system. Design of a stirling engine for electricity generation. Modelling, simulation and thermal analysis of a solar dish. Join the grabcad community today to gain access and download. At zewail city of science and technology, egypt, for a 10 kw stirling engine.
How do solar parabolic dishes work solar power world. This solar powered stirling engine offers a dramatic demonstration of energy conversion. Solar receiver for the sbpsolo v160161 stirling engine hybrid receiver dlr in addition to the solar absorbing surface, the hybrid receiver is equipped with a gas burner. Unlike the standard pv panels, the solar stirling plant is by. While the invention of the basic free piston stirling engine is generally attributed to. Stirling engines for lowtemperature solarthermal electric. At present, no freepiston stirling engines are being developed e for dishengine applications. The scottish inventor robert stirling invented the engine in. Pdf solar parabolic dish stirling engine system design. Infinia has begun commissioning the first concentrating solar power csp systems in a 1. Sunpowered stirling engine with automatic tracking hackaday.
Thus, a solar model, a stirling engine model and a solar dish model are characterized. Schematic of a dishengine system with stretchedmembrane mirrors. Infinias system is the worlds first stirlingbased solar power generation system suitable for automotive scale manufacturing. May 02, 2012 check out this solarpowered stirling engine. How a solar concentrator works with direct heat and a free piston stirling engine.
New optical dish design, supporting structure, stirling engine and the control system. While if the fluid is hydrogen the engine type is kinematic engine, which has higher efficiencies than free piston engine 47. Dish stirling is a solar thermal electric technology which couples parabolic, pointfocusing solar collectors and heat engines which employ the stirling thermodynamic cycle. All of the kinematic stirling engines under consideration for solar. A dishstirling systems concentrator with a nominal maximum direct normal solar insolation of wm2 and a 25kw capacity has a diameter of approximately 10 meters. Optimization of output power and thermal efficiency of solar. Lowcost concentrating solar collector for steam generation. Afterwards, improvements are made to the models and then the new results are analysed. Stirling engine pdf free philips stirling engine 1950 with rhombic drive.
The trouble with dish stirling csp new energy update. Since the late 1970s, the development of dish stirling systems intended for commercial use has been in progress in germany, japan, and the us. Upon recieving their plans, i knew that what they were claiming was not possible because they were using a parabolic dish, which would provide to much heat, as the parts are partly abs plastic and would melt. The solar dish stirling technology is well beyond the research and development phase, with more than 20 years of recorded operating history. One of the most important new concepts of this period is the free piston stirling engine fpse, invented by william beale working in ohio university in 1964. Cspstirling is known to have the highest efficiency of all solar technologies around 30%, compared to solar photovoltaics approximately 15%, and is predicted to be able to produce the cheapest energy among all renewable energy sources in highscale production and hot areas, semideserts, etc. A stirling engine is a heat engine that operates by cyclic compression and expansion. By jason deign it is probably fair to say solar thermal dish stirling technology had its finest moment around october 2010. Concentrated solar energy was considered as a potential heat source, but had to be replaced by a propane burner due to insufficient solar exposure during the testing timeframe. The powerdish is scalable from small arrays to multimws deployed in utilityscale solar power plants. Sunpower 7 kw freepiston natural gasfired generator.
Solar stirling plant is one of those highly recommended methods for this matter of cutting on the electricity bills down its the most efficient and powerful means of producing free electrical energy. Multiobjective optimization and design for free piston stirling engines based on the dimensionless power jian mou and guotong hongmathematical modeling of the stirling engine in terms of applying the composition of the power complex. Abstractdishstirling solar power generation has emerged as. To investigate the feasibility of green power sources for the stirling engine, a parabolic dish was constructed using a wooden frame, a mylar emergency blanket for a reflector, and caulking sealant. A compendium of solar dishstirling technology technical. His invention combines a heat engine, such as a stirling cycle engine, with a solar dish collector to produce electricity. A solar powered stirling engine is a heat engine powered by a temperature gradient generated by the sun. Sun powered stirling engine with 2 axis autotracking. Free piston stirling engine with linear alternator and liquidmetal heatpipe receiver. A compendium of solar dishstirling technology osti. Infinia dish turns out solar power with stirling engine. Dishstirling systems track the sun and focus solar energy into.
Performance analysis of standalone solar dish stirling. Stirling engines for distributed lowcost solar thermalelectric power generation due to their high relative cost, solar electric energy systems have yet to be exploited on a widespread basis. Sophisticated analyses were required to understand the stirling cycle why the machine efficiency is a function of nonideal gas behaviour irreversibilitys should be explicitly and accurately modelled. Dishstirling systems have demonstrated the highest ef. The effectiveness of the lubrication system of a stirling engine is maintained in a solar dish module for all directions of aiming of the dish by the journal mounting of the engine on the dish module with the center of gravity of the journaled mass eccentric to the journal axis along a particular radial. Infinias system is the worlds first stirling based solar power generation system suitable for automotive scale manufacturing. At present, no free piston stirling engines are being developed. Solar energy is a renewable energy resources that is available across the world. Solar dish maker stirling files for bankruptcy cnet. 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. Stirling engines for distributed lowcost solarthermal. The sun energy is the only energy which is free and available to everyone in the world.
Sep 30, 2011 solar dish maker stirling files for bankruptcy. In addition, the variations of the fossil fuel prices and the increase in. The stirling engine with its parabolic mirror, can be attached to any conventional camera tripod. It could also run on a single brayton cycle, where air, helium or other gas.
Standalone solar dish stirling, solar thermal power, performance, energy conversion. Among the thermosolar systems, dishstirling technology is the one with. Two complete cost analysis showed that the targets have been achieved. A model is designed which contains a solar parabolic shaped dish, stirling. See more ideas about solar, stirling and stirling engine. Stirling engines for distributed lowcost solarthermalelectric power generation due to their high relative cost, solarelectric energy systems have yet to be exploited on a widespread basis. Pdf a high potential of thermosolar power generation systems is the use of thermal storage andor hybridization to overcome dependability of solar. Parabolic dish, stirling engine and solar tracking system. Concentrators dishengine systems utilize concentrating solar collectors that track the sun in two axes.
However, as almost anyone in the solar business knows, the places on the map where the projects were supposed to have been are still undeveloped. Eurodish stirling parabolic dish solar collector is an example of decentralized solar technology. 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. Performance analysis methodology for parabolic dish solar. Solar concentrator with solar stirling engine solartron. Performance analysis methodology for parabolic dish solar concentrators for doi. The engine has a sump which is disposed at a low point of the engine.
Jun 12, 2014 sun powered stirling engine with 2 axis autotracking. Energy modeling of a solar dishstirling by artificial. Csp stirling is known to have the highest efficiency of all solar technologies around 30%, compared to solar photovoltaics approximately 15%, and is predicted to be able to produce the cheapest energy among all renewable energy sources in highscale production and hot areas, semideserts, etc. A 1kw freepiston stirling engine was installed in the kerman pilot, using helium as the engine working. Infinia dish turns out solar power with stirling engine cnet. Feb 11, 2008 infinia dish turns out solar power with stirling engine. Technical information on the engines used or to be used in dishstirling systems is also. The stirling engine uses the heat from the sun in order to rotate and produce electrical energy. A compendium of solar dishstirling technology dtic. A background of modeling of dishstirling solar thermal power generation dustin howard, student member, ieee and ronald g. That is with a way of a wide margin easier and more economical to build, and also at the identical time more effective at exploiting the solar energy from sunlight.
Modeling of dishstirling solar thermal power generation. The dishengine 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. Ftts has been applied to determine the output power and the corresponding thermal efficiency, exergetic efficiency, and the rate of entropy generation of a solar stirling system with a finite rate of heat transfer, regenerative heat loss, conductive thermal bridging loss. Stirling dish systems are anticipated to outperform parabolic. The first is the parabolic mirror which focuses the suns. The build is part of a high school class and they packed in some really nice features. Pdf analysis of a solar dishstirling system with hybridization and. A reflective surface, metalized glas s or plastic, reflects incident solar radiation to a small region called the focus. Dishengine systems use a parabolic dish of mirrors to direct and concentrate sunlight onto a central engine that produces electricity. The hybrid dishstirling system thus has the advantage.
Finally, it is verified whether the energy in the form of heat reaching the receiver is sufficient for the stirling engine associated with the dish to operate efficiently. Exergy analysis of a pilot parabolic solar dishstirling. The imperial valley solar and calico projects would have summed almost. Pdf construction and testing of a dishstirling solar energy unit. In this system, the input energy of stirling engine is provided by sunlight as a source of heat. A background of modeling of dish stirling solar thermal power generation dustin howard, student member, ieee and ronald g.
Energy market consumption is expected to increase by 44% from 2006 to 2030, mostly because of the lifestyle standards evolution, and development of industries and economics. Stirling energy systems, which once had giant utility contracts, heads to bankruptcy amid a. Pdf design of a solar dish stirling cogeneration system. See how a stirling engine works or download a powerdish spec sheet pdf. The maximum solar dish stirling engine output power estimation is 9707 w.
640 893 470 1402 55 638 909 1167 376 256 1445 199 1222 130 96 201 1333 1016 1462 1405 1290 290 1028 1034 524 353 1405 714 111 163 446 617 1442 1507 1035 1372 343 199 787 244 1454 419 463 694 1490