A parabolic trough solar collector uses a mirror in the shape of a parabolic cylinder to reflect. The objective of this study is to develop analytical expressions for the determination of the thermal performance of parabolic trough collectors. Parabolic trough power plants are the only types of solar thermal power plant technology with existing commercial operating systems. This report updates the baseline cost for parabolic trough solar fields in the united states within nrels system advisor model sam. The parabolic trough collector is one of the most developed solar concentrating technologies for medium and high temperatures up to 800 k. Enhancing the performance of parabolic trough collectors. Design of a parabolic trough solar collector using a. Especially, parabolic trough solar collectors ptscs are gaining popularity due to their increased efficiency as compared to photovoltaics. Solar collector concentrated solar power plant industrial process heat heat. Parabolic trough solar collector water heater 6 youtube. In 1907, the germans wilhelm meier and adolf remshardt obtained the first patent of parabolic trough technology. In diffused light, there is an inability to focus sunlight efficiently and the output decreases dramatically.
Concentric solar collector solar collector solar collector types parabolic trough solar collector solar collector g d rai khanna publications parabolic trough solar collector design book of parabolic trough solar collector the collector fog collector bone collector cayde 6 collectors box death of an art collector coin collector. In concentrating solar power technology, the optical efficiency of solar collector influences collector performance significantly. Design and fabrication of parabolic trough solar water. Kalogirou, in solar energy engineering second edition, 2014. The sunlight which enters the mirror parallel to its plane of symmetry is focused along the focal line, where objects are. Using the sun energy to heat water is not a new idea. Parabolic trough solar thermal electric power plants.
Pdf comparison of two linear collectors in solar thermal. A parabolic cylinder mirror is formed by stretching a flexible reflecting material between two parabolic end formers. Pdf solar collector in the shape of a parabolic mirror reflects the incident solar energy on the longitudinal axis of the solar collector. One surface of said ribs is shaped to define a parabola and is adapted to receive and support a thin reflecting sheet which forms a parabolic trough reflecting surface.
Sep 03, 2010 it is used to predict the performance of a given parabolic trough and compare competing technologies. All of these may influence whether the parabolic trough solar collector receives sufficient energy. Parabolic trough collector ptc is the most mature concentrating technology which is used in a great variety of thermal applications. This paper was concerned with an experimental study of parabolic trough collector designed and manufactured. About 78% of these are solar collector, 5% are solar energy system. Pdf parabolictrough solar collectors and their applications. Design, construction and evaluation of parabolic trough collector.
Solar troughs are easy to assemble and takes 2 men approximately 1 week to assemble. It is being used on a commercial scale to produce high pressure steam for power generation, as well as on a small scale for commercial and residential applications. 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. I tried to show what a determined person can do with ordinary tools and materials, a good hardware store and a bit of perseverance a high performance do it. The current study presents a numerical and realtime performance analysis of a parabolic trough collector ptc system designed for solar airconditioning applications. Parabolic trough collector cost update for the system. The thermal enhancement of this collector concentrates a lot of interest and various techniques are tested in order for the thermal efficiency to be maximized with a reasonable penalty in the pressure drop. The solar option and solar collector solar energy is a very large, inexhaustible of energy, the power from the sun intercepted. What is described here is basically a manual method to make high efficiency solar collectors against very low cost. Design and construction of a parabolic trough solar collector for.
Introduction solar thermal solar photovoltaic in cold climate large amount of low grade thermal energy is used. A new technique was proposed and implemented through an experimental model to improve the absorber tube of a parabolic trough collector, which was connected to a twisted tube and resulted in a heat transfer enhancement. This article offers an illustrated description of a method to produce a closed parabolic trough solar energy collector box based on the elasticity of the material. Parabolic trough collector the energy of sunlight which enters the mirror parallel to its plane of symmetry is focused along the focal line, where objects are positioned that.
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. Assessment of parabolic trough and power tower solar technology cost and performance forecasts national renewable energy laboratory 1617 cole boulevard golden, colorado 8040393 nrel is a u. A parabolic trough solar collector using reflective flexible materials is disclosed. Pdf an overview on parabolic trough solar collector. Sep 15, 20 we have completed the parabolic trough system.
Experimental study of solar heat transfer in a parabolic trough solar collector ptsc recording to the iraq weather conditions in ad diwaniyah city 32o n, 45o e. In this paper are presented the results of designing a parabolic trough solar collector ptsc, and its application in a solar thermal system for the production of. Pdf parabolic trough solar collector design, construction and. 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. Experimental investigation on a parabolic trough solar. Parabolic trough collector technology abengoa solar. Parabolic trough solar collectors and their applications. Performance enhancement of parabolic trough collectors by solar flux measurement in the focal region. Pdf abstractsolar collector in the shape of a parabolic mirror reflects the incident solar energy on the longitudinal axis of the solar collector. A parabolic trough solar collector uses aluminium sheet in the shape of a parabolic cylinder to reflect and concentrate sun radiations.
Thermal performance of parabolic trough solar collectors. A solar thermal collector collects heat by absorbing sunlight. Parabolic trough solar thermal electric power plants parabolic trough solar collector technology offers an environmentally sound and increasingly costeffective energy source for the future. Heat transfer analysis of receiver for large aperture. Analytical expression of parabolic trough solar collector. Novel lowcost parabolic trough collector structures. Chapter 5 parabolic trough technology authors matthias gunther1 michael joemann1 simon csambor1. Smallsized parabolic trough collector system for solar. Solar collector the energy of the solar radiation is in this case converted to heat with the use of solar panel. Pdf an overview on parabolic trough solar collectors. Design analysis of solar parabolic trough thermal collectors. The effect of incidence angle on performance is contained in the. Currently, the cost of power generation from ptsc is expensive as compared with conventional power generation.
Csp program summit 2016 19 parabolic trough solar field cost drivers suntrap receiver incubator demonstration. A wide variety of parabolic solar collector options are available to you, such as type, application, and pipe material. Pdf heat transfer fluids for parabolic trough solar. Parabolic trough solar thermal electric power plants fact sheet. Parabolic trough collectors ptc are frequently used for steam generation. Pdf solar collector in the shape of a parabolic mirror reflects the incident solar energy. Manual making of a parabolic solar collector gang xiao laboratoire j. Parabolic trough collector an overview sciencedirect. In this paper an experiment platform of a parabolic trough solar collector system ptcs was developed for thermal power generation, and the performance of the ptcs was experimentally investigated with synthetic oil as the circulate heat transfer fluid htf. Parabolic trough collectors are frequently employed for solar steam generation because temperatures of about 300 can be obtained. Parabolic solar trough parabolic trough collectors for.
Design of a 25 mwe solar thermal power plant in iran with. The larger collector aperture area concentrates reflected direct solar radiation onto the smaller outer surface of the receiver tube. Pdf thermal efficiency enhancement of direct absorption. This parabolic trough 73% efficient solar power world. All four parabolic troughs together are heating our water heater tank to the maxallowed 155 degrees f 68c on a typical texas day and then the. Single axis collector performance cannot be significantly improved but there is a significant opportunity to reduce the cost problem statement. The current study represents the modification of parabolic trough solar collector, with the using of solar tracking tilt sensor with the continuous water circulation rate of 0. Performance evaluation of parabolic trough solar collector. Collector is designed with simple parabolic equations. Then, an experimental ptc system setup is established with a concentration ratio of 9. The outlet temperature of the fluid from the collector.
Study of organic trust pdf a simple parabolic trough solar collector tested under the local. In different areas concerning the amount of solar radiation, their standard size is approximately between 20 and 100 mwe. 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. More than one hundred years ago black painted water tanks were used as simple solar water heaters in a number of countries. Performance evaluation of flat plate collector watt the useful heat output of a flatplate solar collector is given by 18. Despite the construction of trough plants such as nevada solar one and andasol 1, public cost data for trough systems are lacking. The resulting mirror is made to track the sun, focusing the suns rays on a receiver tube. The initial installation cost of these parabolic trough solar collectors consti. The incident solar radiation is reflected to the collector tube placed in the focal line of the concentrator, and then heats the heat transfer fluid.
Duanes redrok site is information central for diy heliostats and concentrating solar collectors. An innovative receiver design for a parabolic trough solar. Parabolic trough solar collector pdf basically a manual method to make high efficiency solar collectors against very low cost, which is. Jan 28, 2010 developing solar thermal power technology in an effective manner is a great challenge in china. Parabolic trough solar collector ptsc is one of the most proven technologies for large. There are good designs here that can be built on a budget and without exceptional mechanical skills. Parabolic trough collectors are frequently employed for solar steam generation because relatively high temperatures can be obtained without serious degradation in the collector efficiency. Parabolic trough collector an overview sciencedirect topics. The term solar collector commonly refers to a device for solar hot water heating, but may refer to large power generating installations such as solar parabolic troughs and solar towers or. Novel optical efficiency formulas for parabolic trough solar collectors. Department of energy laboratory operated by midwest research institute battelle bechtel contract no.
Solar receiver tube of the parabolic trough solar collector. Nanomaterials free fulltext performance evaluation of a. In this work we compared three heat transfer fluids htfs for parabolic trough solar collectors ptcs, namely, syltherm 800, therminol vp1, and dowtherm q. The performance of this type of solar collector can be. Nrel tests show the skytroughs thermal efficiency at 350 c 662 f to be over 73%, meaning that nearly three quarters of the solar radiation striking the trough surface is converted into thermal energy. Recent studies that analyze the deployment of solar parabolic trough collectors sptc in different. Assessment of parabolic trough and power tower solar. Parabolic trough power plants use parabolic trough collectors to concentrate the direct solar radiation onto a tubular receiver.
One or more of said collectors are adapted to be joined end to end and. It is mainly composed of a collector tube and a parabolic trough concentrator. A vast area will be economically unreasonable whereas a small area will mainly cause. Parabolic trough solar collector technology is currently the most proven solar thermal collector technology. What is described here is basically a manual method to make high efficiency solar collectors against very low cost, which is particularly suited for teaching, research or. The site can be a bit of a challenge to find stuff on, but its worth the effort. Pdf daily performance of parabolic trough solar collectors. This solar technology is applied in many applications and so its investigation is common. The present invention relates to reflective trough type solar collectors and more particularly to an improved monocoque construction process for making novel parabolic trough solar collectors. Bringing you a prosperous future where energy is clean, abundant, reliable and affordable u.
Figure 1 shows a typical parabolic trough concentrating solar collector for mediumtemperature solar heat collection. It reflects the solar radiation and transfers it to the receiver tube. The parabolic trough solar collector ptc technology is currently one of the most mature and widespread. The capitalpower generation cost can be reduced by increasing aperture sizes of the collector. Patented new technology to make a parabolic solar tough better, less expensive and more accurate. 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. More than one hundred years ago black painted water tanks were used as simple solar water heaters in a. Advanced lowcost receiver for parabolic trough solar power.
A parabolic trough solar energy collector including an elongated support with a plurality of ribs secured thereto and extending outwardly therefrom. Flat plate versus evacuated tube solar collectors pdf. Energy supply and solar resource potential each year, the united states is becoming more dependent on foreign sources of energy. A precision made parabolic trough can focus more solar on a receiver tube collector resulting in creating more solar energy. In 2009, nrel undertook a detailed cost analysis to update the parabolic trough cost model. Comparison of two linear collectors in solar thermal plants. Selection and evaluation of different tracking modes.
Parabolic trough plants require large amount of land while solar. Initially, a thermodynamic model of ptc is developed using engineering equation solver ees having a capacity of around 3 kw. In this study, the daily performance of a ptc is investigated. In this paper, two different reflective surfaces are used to increase the optical efficiency of a parabolic trough solar collector. A threedimensional simulation of a parabolic trough solar. According to another embodiment of the invention, a monocoque parabolic trough solar collector module is provided that comprises a plurality of panels of reflective material clamped to the surface of the interior parabolic mirror channels by a clamping means supported on the parabolic bows or edge channels. Large collector fields supply the thermal energy, which is used to drive a. 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 one dimensional parabola that focuses solar energy onto a line. Especially, parabolic trough and dish solar collectors are capable of supplying the heat and electricity for the domestic and industrial needs. Solar cells can provide some output even in diffused light, not so the case in solar parabolic troughs. Manual making of a parabolic solar collector gang xiao.
Parabolic trough solar thermal system parabolic trough. Incidence angles are generated by solar positions at different time points on the aperture of the parabolic trough solar collector, resulting in cosine effect, endloss effect, and so on. The objective of the current study is to report recent progress on thermal efficiency enhancement in the parabolic solar trough collector using. For the assessment, we adopted and simplified a previously developed mathematical model of. Particularly for a closed system, this unfavorable weather condition leads to the variation in the outlet temperature of parabolic trough solar collectors. 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 solar water heating is one of several well proven solar energy technologies. Certainly, the right size of the solar field is the first selection with regard to nominal electrical power. Us4372027a method of manufacturing parabolic trough. Parabolic trough and power tower systems in the us market preprint. Parabolic trough solar collector an overview sciencedirect topics. Advanced lowcost receiver for parabolic trough solar power design for manufacturing sunshot solarmat award deee00068 2.
Main reflective materials that are used include silver and alluminium, which are normally placed on a glass plate. Manual making of a parabolic solar collector internet archive. The enhancement increased the capacity of the tube to absorb solar energy by improving the convective transfer between the inner surface of the absorber tubes and the heat. Pdf performance evaluation of solar parabolic trough. Pdf design analysis of solar parabolic trough thermal.
Pdf optimization of parabolic trough solar collector system. Table 2 shows the design characteristics of the acurex, single axis tracking m. Feasibility study of freeze recovery options in parabolic trough. The receiver absorbs the incoming radiations and transforms them into thermal energy. Parabolic trough collector cost update for the system advisor model sam parthiv kurup and craig s. A parabolic trough 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. Parabolic trough collector water heating efficient energy use.
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