Parabolic trough solar collector systems made more energy efficient date. Design and development of an educational solar tracking. Collector the collector of a parabolic trough is an assembly of curved shaped reflectors arranged on a structural steel framework. Evacuated tubes absorb solar energy and convert it into heat for use in solar power applications. A detailed numerical simulation model that takes into account the geometry and the optical, thermal and fluid dynamic. The fundamental characteristics of the performance of a parabolic trough solar collector are its concentration ratio and its optical efficiency. The aim of the research project is to test the solartothermal energy efficiency of a tracking linefocus parabolic trough solar collector ptsc. The higher rim angles require more reflecting surface for same aperture area, consequently increased cost and weight of collector. Redressable parabolic trough solar collector back to home. For ls3 collectors normally electro hydraulic drives are. Parabolic trough collector cost update for the system advisor model sam parthiv kurup and craig s. Unesco eolss sample chapters solar energy conversion and photoenergy systems vol.
Solar tubular receiver in parabolic trough concentrators, j. The total aperture area was 1,200 m 7 the system was able to pump 27,000 litres of water per minute. Solar collector in the shape of a parabolic mirror reflects the incident solar energy on the longitudinal axis of the solar collector. Experimental study on the heat transfer characteristics of. Each sca is an independently tracking parabolic trough solar collector consisting of four major subsystems. Parabolic trough solar thermal system parabolic trough. A small rim angle makes relatively flat trough but with a longer focal length 9. Use of parabolic trough solar energy collectors for sea. 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.
While the economic aspect was addressed through the estimation of the levelized cost of electricity lcoe generated by a 50mw plant. This report updates the baseline cost for parabolic trough solar fields in the united states. 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. Patented parabolic trough reflectors, uses the latest technology. Parabolic trough technology is currently the most proven. Pdf comparison of two linear collectors in solar thermal. This is determined by measuring the temperature rise of water as it flows through the receiver of the collector when it is properly focused. Parabolic trough collector model designed in solidworks, a trough dimensions b evacuated tube dimensions. A multitude of the researches focus on the factors of the thermal efficiency of a parabolic trough solar collector, that is, the opticalthermal efficiency. Thermal assessment of selective solar troughs mdpi. 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.
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. 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 parabolic trough prepared by it power india. Numerical modelling of solar parabolic trough receiver. It reflects the solar radiation and transfers it to the receiver tube. No new experimental validation on the rest of the collector is required. Details of this type of collector are given in chapter 3, section 3. Medium temperature solar concentrators parabolictroughs. Parabolic trough collector an overview sciencedirect. Department of energy doe has adopted the planning method known as technology roadmapping for much of its program development. At present several projects are under development in spain, in the usa, egypt, morocco, mexico, algeria and iran.
The annual peak efficiency of each plant is 28% and average efficiency is 15%. Fluid temperature control for parabolic trough solar collectors. Parabolic trough power plants ptpp are thus far mostly developed csp thermal plants that are operating commercially. Heat transfer fluids for future parabolic trough solar. 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. This system incorporates a parabolic trough collector of 52 m2.
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. Solar thermal evacuated tube collector parabolic trough. Parabolic trough solar thermal power plants are at present the cheapest option for utility scale solar electricity production. The chosen trough for testing of receivers of 70100 mm diameter has an aperture width of 2. The parabolic trough solar collector is developed using easily and locally. Although minor variations of the parabolic trough have been introduced, the basic design remained relatively the same for the last 25 years. The parabolic trough system with storage tank the necessary instruments are attached to the apparatus. 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.
A precision made parabolic trough can focus more solar on a receiver tube collector resulting in creating more solar energy. Pdf performance evaluation of nanofluid on parabolic trough solar. Thermal performance of a parabolic trough linear collector. 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. The ls3 reflectors are made from hotformed mirrored glass panels, supported by the truss system that gives the sca its structural integrity. Parabolictrough technology roadmap january 1999 page 2 introduction technology roadmapping the u. Ptcs are employed in a variety of application including industrial steam production for electricity, industrial steam production. Comparison of two linear collectors in solar thermal plants. Large collector fields supply the thermal energy, which is used to drive a steam turbine, which, on its part, drives the electric generator. Direct steam generation in parabolic trough collectors. Pdf in the present work, the performance of aluminum oxide and deionized. Parabolic trough power plants use parabolic trough collectors to concentrate the direct solar radiation onto a tubular receiver. This method proposed a design chart called storage sizing graph, which obtains the optimum collector area for certain locations. Main reflective materials that are used include silver and alluminium, which are normally placed on a glass plate.
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. Numerical simulation and design of a parabolic trough. Parabolic trough solar collector systems made more energy. Influences on shape accuracy of parabolic trough mirror panels mounted onto solar collectors simon schneider dlr, institute of solar research, cologne, germany. Kaxu solar one was the first power plant in operation that featured parabolic trough collector technology, a 100 mw output and 2. The biggest application of this type of system is the nine southern california power plants known as solar. Abstract the eurotrough solar concentrating parabolic trough collector has been developed by a consortium from industry and research during the last. Pdf abstractsolar collector in the shape of a parabolic mirror reflects the incident solar energy. 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 plants are operating with thermal storage of 7. Parabolic trough collector cost update for the system. Numerical modelling of a parabolic trough solar collector.
It is sold as a disassembled flat kit at very low prices. 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. In a solar cooker, for example, food is placed at the focal line. Acceptance test of solar collector fields models, measurement, evaluation, uncertainty. However, it is limited to a single or double factors for available system. Fluid temperature control for parabolic trough solar collectors schindwolf, rudolph on. Performance analysis of parabolic trough collector in hot.
Luz system three solar collector assembly ls3 sca 1. Pdf an overview on parabolic trough solar collector. Nrelpo55041424 march 2007 parabolic troughs solar power plants parabolic trough solar power plants. Heat transfer analysis and numerical simulation of a parabolic trough solar collector a. Material and component specifications single axis tracked. The tracking system must have sufficient torque to operate the collectors even at higher wind speeds. An air conditioning system using a parabolic trough collector was developed and used in educational building 4. The paper starts by looking at the changes currently in progress in the power industry, and then looks at the cost of power from. Pdf design and manufacturing of parabolic trough solar. Sensitive analysis for the efficiency of a parabolic. 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. Influences on shape accuracy of parabolic trough mirror. 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. Modelling of solar thermal power plant using parabolic.
Pdf an overview on parabolic trough solar collectors. Picture courtesy of ausra stalixs approach nearly all the parabolic solar plants in existence today have incorporated luz parabolic trough collector designs. Cnc precision is used in the process of making our parabolic troughs. The information contained in htis poster is subject to a government license. 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. Solar troughs are easy to assemble and takes 2 men approximately 1 week to assemble. Parabolic trough collector water heating efficient. 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. 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. They consist of a solar field filled with hundreds or thousands of solar collector assemblies sca. The parabolic trough collector designed in solidworks and after analyzed in flow simulation studio.
Fluid temperature control for parabolic trough solar. 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. Geometric data for the three parabolic trough collectors. A simplified numerical methodology for designing parabolic trough solar energy systems was proposed by stine and harrigan 17. Slope error measurement tool for solar parabolic trough. High performance solar collector is required for delivering high temperature fluid with high efficiency. The larger collector aperture area concentrates reflected direct solar radiation onto the smaller outer surface of the receiver 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. Parabolic trough power plants are the only types of solar thermal power plant technology with existing commercial operating systems. It generates chilled and heated water, depending on the season, for space cooling and heating. I medium temperature solar concentrators parabolic troughs collectors e. Use of a collector tube covered with an evacuated tube transparent to solar radiation would aid to develop thermally eff icient parabolic trough. Xina solar one, the third solar thermal plant in sa is. The global energy crisis is of great concern to us and we believe that a parabolic solar collector may be a possible immediate.