In this paper a seawater multistage flash and a multieffect distillation system, coupled to a solar parabolic trough collector ptc field, are considered. Thomas ruegamer molten salt for parabolic trough applications. Mountain time you must register to participate registration is free, but space is limited more details, registration information, and recordings of. Cavity receiver designs for parabolic trough collector arxiv. Parabolic trough collector cost update for the system. Material and component specifications single axis tracked. 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.
Pdf abstractsolar collector in the shape of a parabolic mirror reflects the incident. We develop and manufacture solar thermal parabolic trough collectors and advise on system design and applications. It generates chilled and heated water, depending on the season, for space cooling and heating. This binethemeninfo brochure presents the four main research areas for solar thermal power plants. Parabolic trough collector system is used in a variety of applications which can be classified into two main categories, concentrated solar electrical power and solar thermal applications 6. Manual making of a parabolic solar collector gang xiao laboratoire j. Solar parabolic trough uses mirrored surfaces curved in a linearly extended parabolic shape. Therefore, for these applications the development of high performance solar collectors and system components is necessary. Sam, available at no cost at, is a performance and financial model. Design and development of an educational solar tracking.
A parabolic trough collector includes a parabolic mirror support structure with a parabolic mirror surface applied thereto, and an absorber support structure supporting an absorber tube. Computations are carried out for three different solar collector types. Parabolic trough collector model designed in solidworks, a trough dimensions b evacuated tube dimensions. Collector development 19032014 page 21 senertrough torque tube supported on sleeve bearings stamped arms to support the reflector panels most common collector today aperture width. Experimental and theoretical study of a parabolic trough.
Solar tubular receiver in parabolic trough concentrators, j. Abstract the eurotrough solar concentrating parabolic trough collector has been. 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 parabolic trough power generation system. Parabolic trough collector power plant performance. A moltensalt heat storage system that allows it to supply electric power for up to seven hours when there is an absence of solar radiation. This line is called the focal axis of the parabolic collector. This is followed by an experimental verification of the model and an analysis of the experimental results. The receiver is the element of the system where solar radiation is absorbed and converted into thermal energy. The feasibility of using this collector for the purpose of supplying hot steam in a solar thermal power plant has been the interest of energy policy makers recently.
Ragheb 2011 the interest in the parabolic trough technology did not rise again until 1977, when the us department of energy as well as the german federal ministry of research and technology began to fund the. From the verification of the model with actual generation 6% deviation is obtained. Thermal and structural design of a solar parabolic trough collector for adsorp tion refrigeration application system is carried out and the thermal performance is evaluated experimentall y. The solar thermal element can be a parabolic trough field, a linear fresnel reflector field, a central receiver system or a field of parabolic dishes, commonly designed for a normal incident radiation of 800900 wm2 1. Tracking system enables the trough to remain focused towards the sun so as to capture the maximum possible direct radiation during the day. Modelling of solar thermal power plant using parabolic. Dec 18, 2017 for the love of physics walter lewin may 16, 2011 duration. Smallsized parabolic trough collector system for solar. It offers polytrough 1200, a roof and ground mountable parabolic trough collector.
The cost of the collector system is a main economic factor, but as with any capitalintensive energy conservation or renewable energy installation, the critical factor is likely to. Energy equations for the computation of parabolictrough collector efficiency using. Tracking systems are required for collectors to follow the sun in order to concentrate the direct solar radiation onto the small. The biggest application of this type of system is the nine southern california power plants known as solar. Numerical simulation of a parabolic trough solar collector with n on uniform solar flux conditions b y coupling fvm and mcrt method, solar energy, vol. Solar collector in the shape of a parabolic mirror reflects the incident solar energy on the longitudinal axis of the solar collector. Optimization of parabolic trough solar collector system. Parabolic trough collector application in egypt built in 19 source. From indian condition, low cost frp parabolic trough system proves to be beneficial for industrial. 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. This theses is concerned with an experimental study of a parabolic trough collector with its sun tracking system designed and manufactured utilizing the existing gaza technologies and available local materials.
The invention relates to a parabolic trough collector 14 comprising a parabolic mirror support structure 1 having a parabolic mirror surface applied thereto and an absorber support structure supporting an absorber tube 12, wherein both support structures are mechanically attached to each other in a fixed relative position on a torsion tube 2 which is disposed below the parabolic mirror. So, to gain the optimum flux extraction the parabolic trough should be due south facing. Department of energy doe has adopted the planning method known as technology roadmapping for much of its program development. The slope angle of the parabolic trough should be equal to the latitude value of the particular location. Energy equations for computation of parabolictrough. Experimental performance evaluation of a solar parabolic trough collector using solar topocentric coordinates of bauchi nigeria. Efficiency and thermal energy harvest by the solar field with a. Numerical modelling of solar parabolic trough receiver. Pdf parabolic trough concentrators for low enthalpy processes.
The skytrough is a high performance parabolic trough concentrating solar collector for use in. The parabolic trough solar energy collector is selected mainly due to its ability to function at high temperatures with high efficiency. The ls3 collector was the last collector design produced by luz and was used primar ily at the larger 80 mw plants. Parametric study of solar parabolic trough collector system. This solar technology is applied in many applications and so its investigation is common. Parabolic trough collector cost update for the system advisor model sam parthiv kurup and craig s. Main input parameters table 3 shows input parameters for three of the cases. Selection of design point conditions performance of a parabolic trough collector solar field is evaluated for a set of conditions and geographical location, these set of conditions are known as design point conditions. This report provides the baseline 2010 parabolic trough costs discussed here.
The absorber is a tube, painted with solar radiation absorbing material, located at the focal length of the concentrator, usually covered with a totally or partially vacuumed glass tube to minimize the heat. Generation of a parabolic trough collector efficiency curve from separate measurements of outdoor optical efficiency and indoor receiver heat loss preprint. Current and future costs for parabolic trough and power tower. The total aperture area was 1,200 m 7 the system was able to pump 27,000 litres of water per minute.
The parabolic trough collector designed in solidworks and after analyzed in flow simulation studio. Parabolic trough power plants use parabolic trough collectors to concentrate the direct solar radiation onto a tubular receiver. Experimental study of parabolic trough collector ptc and. The ptc is integrated with thermal energy storage tes system and consists of concentrator made of aluminium sheets of 7. The solar option and solar collector solar energy is a very large, inexhaustible of energy, the power from the sun intercepted. Parabolic trough collector technology torresol energy. Thermal output analysis of a designed parabolic trough solar. This system incorporates a parabolic trough collector of 52 m2. Its huge dimensions of one solar collector assembly sca with an aperture of 7. Federal technology parabolictrough solar alert water heating. A multitude of the researches focus on the factors of the thermal efficiency of a parabolic trough solar collector, that is, the opticalthermal efficiency. The present work is concerned with the investigation of the performance of a parabolic trough collector in north cyprus. Energy assessment of a parabolic trough collector in north cyprus.
The model equations included the universal timeut, day n, month m, year y, delta t. Pdf in the present work, the performance of aluminum oxide and deionized water. A parabolictrough collector ptc is a linearfocus solar collector, basically composed of a parabolic trough shaped concentrator that reflects direct solar radiation onto a receiver or absorber tube located in the focal line of the parabola see fig. An innovative parabolic trough solar lightingthermal ptlt system is proposed by combining the advantages of both systems. Parabolictrough technology roadmap january 1999 page 2 introduction technology roadmapping the u. Concentration types a parabolic trough collector b linear fresnel collector c central receiver system with dish collector and d central receiver system with distributed reflectors 29jul08 11rizwan masood. Aron dobos all sessions last one hour and begin at 1 p.
Advanced lowcost receiver for parabolic trough solar power. The first category is most common, most of the commercial concentrated solar power csp plants are working on parabolic trough collector system. Energetic comparison of linear fresnel and parabolic trough. An air conditioning system using a parabolic trough collector was developed and used in educational building 4. The schematic diagram and experimental setup of parabolic trough collector are shown in fig. The cfd analysis of solar parabolic trough system with reflectors. Annual simulation of the performance for a field of the marstal plant is carried out and results are. The next steps will be to test the system at kramer junction later this year and eventually license the technology to parabolic trough power plant operators andor trough project developers. This paper describes an energy system that is designed to meet the demands of rural population that currently have no access to gridconnected electricity. The influence on distilled water production of the main operation and design. Initially, a thermodynamic model of ptc is developed using engineering equation solver ees having a capacity of around 3 kw. Pdf an overview on parabolic trough solar collector. 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. Thermal assessment of selective solar troughs mdpi.
In recent years, linear fresnel lf collector systems have been developed as a technical. This feature allows the parabolic concentrators to be integrated with solar thermal systems. Design of a parabolic trough solar collector using a. Pdf an overview on parabolic trough solar collectors. A receiver tube running in the center and the length of the trough is the focus point on which the sun generates. The purpose of this paper is to present the collector erected at the premises of the cyprus university of technology and. Parabolic trough collector cost update for the system advisor. This paper presents the simulation of parabolictrough collector model te38 using solar positions coordinates of bauchi. A first ultimate trough ut collector demonstration loop was successfully integrated in an existing solar power plant in california and is now put into operation. The ls3 collector represents the current stateoftheart in parabolic troug h collector design and is the collector that would likely be used in the next parabolic trough plant built. The current study presents a numerical and realtime performance analysis of a parabolic trough collector ptc system designed for solar airconditioning applications.
Numerical modelling of a parabolic trough solar collector. Ultimate trough fabrication, erection and commissioning of. Pdf optimization of parabolic trough solar collector. Generation of a parabolic trough collector efficiency curve. An application of parabolic trough collector ptc system. A parabolictrough collector ptc is a linearfocus solar collector, basically composed of a parabolictroughshaped concentrator that reflects direct solar radiation onto a receiver or absorber tube located in the focal line of the parabola see fig. With respect to the user friendliness of the developed software, evaluation tests were performed with selected final year mechanical engineering students. Closed circuit system can be used in the parabolic trough collector allowing to store higher heat and at higher pressure conditions increasing its potential 9.
A parabolic trough solar collector system will provide within next decade a significant contribution to efficient, economical, sustainable renewable and clean energy supply with positive effect on. Mar 23, 2016 parabolic trough collector systems produce heat at about 400c. Most current solar thermal power plants uses a parabolic trough design called luz system ls1, 2 and 3 collectors. The collector system to be used in this case is most probably the parabolic trough, so it is very important to have a collector of this type installed and examined under the prevailing weather conditions of the island.
Ptlt system uses parabolic trough collector ptc as a solar collector. Medium temperature solar concentrators parabolictroughs. Solargenix energy and nrel collaborated to have developed a new collector structure that uses extruded aluminum. The optical efficiency of lfr systems is lower than that of ptc systems. I medium temperature solar concentrators parabolic troughs collectors e. Details of this type of collector are given in chapter 3, section 3. Solar system using parabolic trough collector for water.
Our parabolic solar trough collectors can collect solar energy up to 10 hours per day compared to a 6 hour day with regular flat plate collectors. In experimental setup, parabolic trough collector having an aperture area 1. The results of the software were validated with published works. The most important line concentrating technologies are the parabolic trough collectors ptc and linear. Tracking system may include the following few set of equipments electrical mo. The larger collector aperture area concentrates reflected direct solar radiation onto the smaller outer surface of the receiver tube. Design support system for parabolic trough solar collector. 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. Unesco eolss sample chapters solar energy conversion and photoenergy systems vol. Solar energy conversion and photoenergy systems vol. New invention to make parabolic trough solar collector. Troughs also work well for district space or water heating systems serving multiple buildings from a central steam or hotwater plant.
The parabolic trough collector is one of the most developed solar concentrating technologies for medium and high temperatures up to 800 k. Luz ls1, ls2, and ls3 parabolic trough collector technology segs demonstrated commercial nature of parabolic trough technology all plants still operating, many will likely operate past 30 year lifetime. 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. The parabolic mirror support structure and the absorber support structure are mechanically fastened in a fixed position relative to one another on a torsion tube that is arranged below the parabolic mirror. A parabolic trough is a p750 pdf type of solar thermal. Thermal and optical efficiency investigation of a parabolic. Analytical expression of parabolic trough solar collector. Parabolic trough collector parabolic trough is a device in a parabolic shape, having small focal length of.
Sensitive analysis for the efficiency of a parabolic trough. Nep solar is striving to make a difference in the emerging concentrating solar thermal energy sector. Main reflective materials that are used include silver and alluminium, which are normally placed on a glass plate. Brief introduction parabolic trough receiver is also known as heat collecting element hce. Note that the parabolic trough collector optical performance depends on the diameter of the hce, which was varied during optimization. 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. Parabolic trough solar collector usually consists of a parabolic solar energy concentrator, which reflects solar energy into an absorber. Heat losses from parabolic trough solar collectors mohamad. Then, an experimental ptc system setup is established with a concentration ratio of 9. Redressable parabolic trough solar collector back to home. The systems design as a modular system is cost effective at smaller scale, allowing us to serve customers with power generation needs. Pdf performance evaluation of nanofluid on parabolic trough solar.
However, it is limited to a single or double factors for available system. The parabolic trough operates at about 75% efficiency and at 495 square foot can collect approximately 270 kwh 10 hours on a clear day. Parabolic trough solar thermal system parabolic trough. Parabolic trough solar field cost drivers suntrap receiver incubator demonstration novel collector structures reduce framing simplify assembly highly accurate mirrors at competitive cost 0% 20%. It reflects the solar radiation and transfers it to the receiver tube.
Journal of renewable and alternative energy technologies, 1. A design support system for parabolic trough collector design is presented in this study. In a solar cooker, for example, food is placed at the focal line. Large collector fields supply the thermal energy, which is used to drive a steam turbine, which, on its part, drives the electric generator. Modeling parabolic trough systems system advisor model. A concentrating solar power csp plant with parabolic trough collector ptc using thermal oil as heat transfer fluid htf is the most commercially established technology. This heat can be stored in an insulated container and used during nighttime. Owned by torresol energy and located in the south of spain, the valle 1 and valle 2 parabolic trough plants have. Development and testing of a prototype parabolic trough solar collector for steam generation at nsukka, south east nigeria. On the other hand, linear fresnel reflectors lfrs with direct steam generation dsg are developed and proposed as cheaper alternative to ptc systems. Made from galvanized steel to support its torquetube structure, luz collector represents the standard design. Reliable parabolic trough technology sopogys microcsp solutions are based on parabolic trough technology the most commercialized, proven and bankable solar thermal technology. Photogremmetric test was conduct on the parabolic trough collector to determine the.
Parabolic trough receiver solar collector manufacturer. The htf will deliver 25 kw heat operate an unfired boiler to produce steam at 5 bar. Pdf design and manufacturing of parabolic trough solar. The single axis tracking system is provided with either north to south or east to west tracking.
The provision of electricity to rural areas derives important social and economic benefits to. The results signify that the solar parabolic trough collector is a promising option f or providing energy required to. Several sections can be ganged together to make a large parabolic solar water heater steam heating system. The objective of this study is to develop analytical expressions for the determination of the thermal performance of parabolic trough collectors. The researchers reach to the experimental thermal efficiency less than the theoretical thermal efficiency by six percent. Towards standardization of insite parabolic trough collector testing in solar thermal power plants aip conf.
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