Recent studies that analyze the deployment of solar parabolic trough collectors sptc in different. Parabolic trough solar water heating is one of several well proven solar energy technologies. 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. For the assessment, we adopted and simplified a previously developed mathematical model of. Introduction solar thermal solar photovoltaic in cold climate large amount of low grade thermal energy is used. Comparison of two linear collectors in solar thermal plants. Experimental investigation on a parabolic trough solar. There are good designs here that can be built on a budget and without exceptional mechanical skills. Pdf solar collector in the shape of a parabolic mirror reflects the incident solar energy on the longitudinal axis of the 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.
Large collector fields supply the thermal energy, which is used to drive a. Parabolic trough collector water heating efficient energy use. 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. Energy supply and solar resource potential each year, the united states is becoming more dependent on foreign sources of energy. 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. The site can be a bit of a challenge to find stuff on, but its worth the effort. It is mainly composed of a collector tube and a parabolic trough concentrator.
Pdf solar collector in the shape of a parabolic mirror reflects the incident solar energy. 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. Design of a parabolic trough solar collector using a. 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. The receiver absorbs the incoming radiations and transforms them into thermal energy. Despite the construction of trough plants such as nevada solar one and andasol 1, public cost data for trough systems are lacking. Sep 15, 20 we have completed the parabolic trough system. Parabolic trough solar collector an overview sciencedirect topics. 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. Pdf an overview on parabolic trough solar collector. Parabolic trough collector an overview sciencedirect. The outlet temperature of the fluid from the collector. Jan 28, 2010 developing solar thermal power technology in an effective manner is a great challenge in china.
Parabolic trough collector technology abengoa solar. 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 thermal electric power plants. One or more of said collectors are adapted to be joined end to end and. 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. Novel lowcost parabolic trough collector structures. The performance of this type of solar collector can be. Solar cells can provide some output even in diffused light, not so the case in solar parabolic troughs. The effect of incidence angle on performance is contained in the. 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. Performance evaluation of parabolic trough solar collector. Nowadays, parabolic trough solar thermal plants are prevalent around the world. Advanced lowcost receiver for parabolic trough solar power design for manufacturing sunshot solarmat award deee00068 2.
Parabolic trough collector cost update for the system. 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. Design, construction and evaluation of parabolic trough collector. 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. 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. Currently, the cost of power generation from ptsc is expensive as compared with conventional power generation. Nanomaterials free fulltext performance evaluation of a. Pdf parabolictrough solar collectors and their applications.
Table 2 shows the design characteristics of the acurex, single axis tracking m. In this study, the daily performance of a ptc is investigated. Parabolic trough collectors are frequently employed for solar steam generation because relatively high temperatures can be obtained without serious degradation in the collector efficiency. A parabolic trough is a one dimensional parabola that focuses solar energy onto a line. Parabolic trough collector ptc is the most mature concentrating technology which is used in a great variety of thermal applications. Especially, parabolic trough and dish solar collectors are capable of supplying the heat and electricity for the domestic and industrial needs. An innovative receiver design for a parabolic trough solar. Using the sun energy to heat water is not a new idea. Pdf design analysis of solar parabolic trough thermal. 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. Smallsized parabolic trough collector system for solar.
Enhancing the performance of parabolic trough collectors. Single axis collector performance cannot be significantly improved but there is a significant opportunity to reduce the cost problem statement. Parabolic trough solar collectors and their applications. Duanes redrok site is information central for diy heliostats and concentrating solar collectors. Parabolic trough collector cost update for the system advisor model sam parthiv kurup and craig s. A parabolic trough solar collector uses a mirror in the shape of a parabolic cylinder to reflect and concentrate sun radiations towards a receiver tube located at the focus line of the parabolic cylinder.
Initially, a thermodynamic model of ptc is developed using engineering equation solver ees having a capacity of around 3 kw. Parabolic trough and power tower systems in the us market preprint. Pdf daily performance of parabolic trough solar collectors. 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. 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. 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. Then, an experimental ptc system setup is established with a concentration ratio of 9. 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. Performance evaluation of flat plate collector watt the useful heat output of a flatplate solar collector is given by 18. 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. Performance enhancement of parabolic trough collectors by solar flux measurement in the focal region. Main reflective materials that are used include silver and alluminium, which are normally placed on a glass plate.
Certainly, the right size of the solar field is the first selection with regard to nominal electrical power. 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. Chapter 5 parabolic trough technology authors matthias gunther1 michael joemann1 simon csambor1. Parabolic trough plants require large amount of land while solar. Design and fabrication of parabolic trough solar water. Manual making of a parabolic solar collector internet archive. The sunlight which enters the mirror parallel to its plane of symmetry is focused along the focal line, where objects are. Parabolic solar trough parabolic trough collectors for. 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. 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. 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. 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 optimization of parabolic trough solar collector system. Department of energy laboratory operated by midwest research institute battelle bechtel contract no. Manual making of a parabolic solar collector gang xiao laboratoire j. Solar collector the energy of the solar radiation is in this case converted to heat with the use of solar panel. Parabolic trough power plants are the only types of solar thermal power plant technology with existing commercial operating systems. Pdf performance evaluation of solar parabolic trough. Parabolic trough collectors are frequently employed for solar steam generation because temperatures of about 300 can be obtained. A parabolic trough solar energy collector including an elongated support with a plurality of ribs secured thereto and extending outwardly therefrom. The capitalpower generation cost can be reduced by increasing aperture sizes of the collector.
The parabolic trough solar collector ptc technology is currently one of the most mature and widespread. The objective of the current study is to report recent progress on thermal efficiency enhancement in the parabolic solar trough collector using. Selection and evaluation of different tracking modes. Pdf heat transfer fluids for parabolic trough solar. A precision made parabolic trough can focus more solar on a receiver tube collector resulting in creating more solar energy. Figure 1 shows a typical parabolic trough concentrating solar collector for mediumtemperature solar heat collection. The parabolic trough collector is one of the most developed solar concentrating technologies for medium and high temperatures up to 800 k. In this paper, two different reflective surfaces are used to increase the optical efficiency of a parabolic trough solar collector. It reflects the solar radiation and transfers it to the receiver tube. Parabolic trough solar collector water heater 6 youtube. Parabolic trough collector an overview sciencedirect topics. Design of a 25 mwe solar thermal power plant in iran with. A wide variety of parabolic solar collector options are available to you, such as type, application, and pipe material. This report updates the baseline cost for parabolic trough solar fields in the united states within nrels system advisor model sam.
A vast area will be economically unreasonable whereas a small area will mainly cause. Design analysis of solar parabolic trough thermal collectors. The resulting mirror is made to track the sun, focusing the suns rays on a receiver tube. Thermal performance of parabolic trough solar collectors. Parabolic trough solar collector ptsc is one of the most proven technologies for large. In 1907, the germans wilhelm meier and adolf remshardt obtained the first patent of parabolic trough technology. Pdf an overview on parabolic trough solar collectors. In this work we compared three heat transfer fluids htfs for parabolic trough solar collectors ptcs, namely, syltherm 800, therminol vp1, and dowtherm q.
Solar receiver tube of the parabolic trough solar collector. 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. Assessment of parabolic trough and power tower solar. Us4372027a method of manufacturing parabolic trough. Bringing you a prosperous future where energy is clean, abundant, reliable and affordable u. Parabolic trough solar collector pdf basically a manual method to make high efficiency solar collectors against very low cost, which is. This parabolic trough 73% efficient solar power world. Collector is designed with simple parabolic equations.
Study of organic trust pdf a simple parabolic trough solar collector tested under the local. Feasibility study of freeze recovery options in parabolic trough. Manual making of a parabolic solar collector gang xiao. 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. In diffused light, there is an inability to focus sunlight efficiently and the output decreases dramatically. 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. A parabolic trough solar collector uses aluminium sheet in the shape of a parabolic cylinder to reflect and concentrate sun radiations. Pdf thermal efficiency enhancement of direct absorption. The current study presents a numerical and realtime performance analysis of a parabolic trough collector ptc system designed for solar airconditioning applications. This paper was concerned with an experimental study of parabolic trough collector designed and manufactured. The solar option and solar collector solar energy is a very large, inexhaustible of energy, the power from the sun intercepted. 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.
Csp program summit 2016 19 parabolic trough solar field cost drivers suntrap receiver incubator demonstration. Parabolic trough solar thermal system parabolic trough. More than one hundred years ago black painted water tanks were used as simple solar water heaters in a. Solar troughs are easy to assemble and takes 2 men approximately 1 week to assemble. Parabolic trough solar collector technology is currently the most proven solar thermal collector technology.
Pdf abstractsolar collector in the shape of a parabolic mirror reflects the incident solar energy on the longitudinal axis of the solar collector. Advanced lowcost receiver for parabolic trough solar power. All of these may influence whether the parabolic trough solar collector receives sufficient energy. Sep 03, 2010 it is used to predict the performance of a given parabolic trough and compare competing technologies. About 78% of these are solar collector, 5% are solar energy system. Parabolic trough solar thermal electric power plants parabolic trough solar collector technology offers an environmentally sound and increasingly costeffective energy source for the future. A solar thermal collector collects heat by absorbing sunlight.
In 2009, nrel undertook a detailed cost analysis to update the parabolic trough cost model. This solar technology is applied in many applications and so its investigation is common. Particularly for a closed system, this unfavorable weather condition leads to the variation in the outlet temperature of parabolic trough solar collectors. Solar collector concentrated solar power plant industrial process heat heat.
Patented new technology to make a parabolic solar tough better, less expensive and more accurate. Pdf parabolic trough solar collector design, construction and. The objective of this study is to develop analytical expressions for the determination of the thermal performance of parabolic trough collectors. Flat plate versus evacuated tube solar collectors pdf. In different areas concerning the amount of solar radiation, their standard size is approximately between 20 and 100 mwe. 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. A parabolic trough solar collector using reflective flexible materials is disclosed. Parabolic trough solar thermal electric power plants fact sheet. A parabolic cylinder mirror is formed by stretching a flexible reflecting material between two parabolic end formers. Especially, parabolic trough solar collectors ptscs are gaining popularity due to their increased efficiency as compared to photovoltaics. Parabolic trough collectors ptc are frequently used for steam generation.
Pdf comparison of two linear collectors in solar thermal. A parabolic trough solar collector uses a mirror in the shape of a parabolic cylinder to reflect. A threedimensional simulation of a parabolic trough solar. Novel optical efficiency formulas for parabolic trough solar collectors. Heat transfer analysis of receiver for large aperture. Parabolic trough power plants use parabolic trough collectors to concentrate the direct solar radiation onto a tubular receiver. 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. Analytical expression of parabolic trough solar collector. 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.
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