Parabolic trough collectors are frequently employed for solar steamgeneration because temperatures of about 300 can be obtained without any serious degradation in the collector s efficiency. Kaxu solar one was the first power plant in operation that featured parabolic trough collector technology, a 100 mw output and 2. 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. This line is called the focal axis of the parabolic collector. Use of parabolic trough solar energy collectors for seawater desalination soteris kalogirou department of mechanical engineering, higher technical institute, po box 423, nicosia, cyprus abstract the various desalination methods are analysed with respect to their primary energy consumption, seawater treatment requirement and equipment cost. I medium temperature solar concentrators parabolic troughs collectors e. Pdf comparison of two linear collectors in solar thermal. 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. Comparison of two linear collectors in solar thermal plants. The parabolic trough linear collector ptlc is a solar technology employed to convert solar radiation into thermal energy for commercial and industrial processes. Therefore, in comparison to the current plant designs using oil, dsg requires experimental validation of the new receiver tube and interconnections between the collectors due to the increase in design operating pressure and temperature. Collector the collector of a parabolic trough is an assembly of curved shaped reflectors arranged on a structural steel framework. Acceptance test of solar collector fields models, measurement, evaluation, uncertainty. Design and development of an educational solar tracking.
Parabolic trough solar collectors utilize a heat transfer fluid htf that flows through the receiver collecting and transporting solar thermal energy to the power. The parabolic trough solar collector is developed using easily and locally. While the economic aspect was addressed through the estimation of the levelized cost of electricity lcoe generated by a 50mw plant. Thermal assessment of selective solar troughs mdpi. This method proposed a design chart called storage sizing graph, which obtains the optimum collector area for certain locations. A simplified numerical methodology for designing parabolic trough solar energy systems was proposed by stine and harrigan 17. The fundamental characteristics of the performance of a parabolic trough solar collector are its concentration ratio and its optical efficiency. Parabolic trough power plants are the only types of solar thermal power plant technology with existing commercial operating systems.
Large collector fields supply the thermal energy, which is used to drive a steam turbine, which, on its part, drives the electric generator. Parabolic trough technology is currently the most proven. Solar tubular receiver in parabolic trough concentrators, j. Solar collector in the shape of a parabolic mirror reflects the incident solar energy on the longitudinal axis of the solar collector.
The total aperture area was 1,200 m 7 the system was able to pump 27,000 litres of water per minute. Numerical modelling of solar parabolic trough receiver. Parabolic trough solar collector systems made more energy efficient date. Solar thermal evacuated tube collector parabolic trough. An evacuated tube consists of two glass tubes made from extremely strong borosilicate glass. Heat transfer analysis and numerical simulation of a parabolic trough solar collector a.
For ls3 collectors normally electro hydraulic drives are. 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. Pdf an overview on parabolic trough solar collectors. 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. The technical aspect was addressed by developing an empirical mathematical model for the performance of a parabolic trough demonstration plant installed in the dead sea area. The larger collector aperture area concentrates reflected direct solar radiation onto the smaller outer surface of the receiver tube.
This report updates the baseline cost for parabolic trough solar fields in the united states. Redressable parabolic trough solar collector back to home. This system incorporates a parabolic trough collector of 52 m2. Pdf performance evaluation of nanofluid on parabolic trough solar. Fluid temperature control for parabolic trough solar. Solar energy technologies have become more popular in recent decades, with concentrated solar power being one of the most used energy sources to provide thermal energy to applications operating at medium and high temperatures. Fluid temperature control for parabolic trough solar collectors schindwolf, rudolph on. The parabolic trough collector designed in solidworks and after analyzed in flow simulation studio. Use of parabolic trough solar energy collectors for sea.
Fluid temperature control for parabolic trough solar collectors. The ls3 reflectors are made from hotformed mirrored glass panels, supported by the truss system that gives the sca its structural integrity. Parabolic trough solar thermal system parabolic trough. Numerical simulation and design of a parabolic trough. Luz system three solar collector assembly ls3 sca 1. The chosen trough for testing of receivers of 70100 mm diameter has an aperture width of 2. The tracking system must have sufficient torque to operate the collectors even at higher wind speeds. It generates chilled and heated water, depending on the season, for space cooling and heating. The higher rim angles require more reflecting surface for same aperture area, consequently increased cost and weight of collector. Main reflective materials that are used include silver and alluminium, which are normally placed on a glass plate. Sensitive analysis for the efficiency of a parabolic.
Pdf design and manufacturing of parabolic trough solar. A detailed numerical simulation model that takes into account the geometry and the optical, thermal and fluid dynamic. Although minor variations of the parabolic trough have been introduced, the basic design remained relatively the same for the last 25 years. Parabolic trough power plants ptpp are thus far mostly developed csp thermal plants that are operating commercially. It is sold as a disassembled flat kit at very low prices. 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. High performance solar collector is required for delivering high temperature fluid with high efficiency. Geometric data for the three parabolic trough collectors.
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. Each sca is an independently tracking parabolic trough solar collector consisting of four major subsystems. Parabolictrough technology roadmap january 1999 page 2 introduction technology roadmapping the u. Parabolic trough solar thermal power plants are at present the cheapest option for utility scale solar electricity production. A precision made parabolic trough can focus more solar on a receiver tube collector resulting in creating more solar energy. Experimental study on the heat transfer characteristics of. In this work, a solar parabolic trough collector ptc has been dimensioned and its technical feasibility has been evaluated in order to be used as ammonia direct vapor generator in an advanced absorption aircooled solargax cycle of 10.
Unesco eolss sample chapters solar energy conversion and photoenergy systems vol. 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 biggest application of this type of system is the nine southern california power plants known as solar. At present several projects are under development in spain, in the usa, egypt, morocco, mexico, algeria and iran. Design and manufacturing of parabolic trough solar collector system for a developing country pakistan article pdf available january 2011 with 1,980 reads how we measure reads.
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. Material and component specifications single axis tracked. Xina solar one, the third solar thermal plant in sa is. Thermal performance of a parabolic trough linear collector. The annual peak efficiency of each plant is 28% and average efficiency is 15%. The paper starts by looking at the changes currently in progress in the power industry, and then looks at the cost of power from.
Direct steam generation in parabolic trough collectors. Medium temperature solar concentrators parabolictroughs. Utilization of parabolic trough collector for generation. Parabolic trough collector cost update for the system advisor model sam parthiv kurup and craig s. Today, the concentration ratio of a parabolic trough collector of width between 1m and 2m is limited to about 50 times under industrial manufacturing conditions and with high cost, while our method can achieve an effective and efficient concentration ratio of over 80. Pdf abstractsolar collector in the shape of a parabolic mirror reflects the incident solar energy. Material and component specifications single axis tracked parabolic trough prepared by it power india. T d accepted manuscript 1 1 experimental study on the heat transfer characteristics of 2 a low melting point salt in a parabolic trough solar 3 collector system 4 yuting wu 1, shanwei liu 1, yaxuan xiong 2, chongfang ma 1, yulong ding 3 5 1 key laboratory of enhanced heat transfer and energy conservation, ministry of education and key 6 laboratory of heat transfer and energy. A small rim angle makes relatively flat trough but with a longer focal length 9. Modelling of solar thermal power plant using parabolic. 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. Parabolic trough solar collector systems made more energy. My interest is in using the glass evacuated tubes not as a component of a commercial collector, but as an insulated collector for a diy parabolic trough concentrating collector. Use of a collector tube covered with an evacuated tube transparent to solar radiation would aid to develop thermally eff icient parabolic trough.
Parabolic trough collector an overview sciencedirect. 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 information contained in htis poster is subject to a government license. In a solar cooker, for example, food is placed at the focal line. It reflects the solar radiation and transfers it to the receiver tube. Performance analysis of parabolic trough collector in hot. Patented parabolic trough reflectors, uses the latest technology. They consist of a solar field filled with hundreds or thousands of solar collector assemblies sca. No new experimental validation on the rest of the collector is required. Parabolic trough collector free download as powerpoint presentation.
The plants are operating with thermal storage of 7. With the addition of a rotatable tracking parabolic trough behind a single evacuated tube, it is possible to increase the heat capture significantly, up to 815x safely. Heat transfer fluids for future parabolic trough solar. Parabolic trough power plants use parabolic trough collectors to concentrate the direct solar radiation onto a tubular receiver.
Pdf an overview on parabolic trough solar collector. However, it is limited to a single or double factors for available system. Influences on shape accuracy of parabolic trough mirror panels mounted onto solar collectors simon schneider dlr, institute of solar research, cologne, germany. Numerical modelling of a parabolic trough solar collector.
The global energy crisis is of great concern to us and we believe that a parabolic solar collector may be a possible immediate. The aim of the research project is to test the solartothermal energy efficiency of a tracking linefocus parabolic trough solar collector ptsc. Parabolic trough collector water heating efficient. Department of energy doe has adopted the planning method known as technology roadmapping for much of its program development. Solar troughs are easy to assemble and takes 2 men approximately 1 week to assemble. Parabolic trough collector model designed in solidworks, a trough dimensions b evacuated tube dimensions. Slope error measurement tool for solar parabolic trough. A wide variety of vacuum tube for parabolic trough collector options are available to you, such as split. The parabolic trough system with storage tank the necessary instruments are attached to the apparatus. Parabolic trough collector cost update for the system. Pdf in the present work, the performance of aluminum oxide and deionized. Picture courtesy of ausra stalixs approach nearly all the parabolic solar plants in existence today have incorporated luz parabolic trough collector designs. An air conditioning system using a parabolic trough collector was developed and used in educational building 4.
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