For solar applications, especially parabolic trough collector systems, heat transfer between the receptor tube and the fluid can be increased due to the enhancement of the thermal properties of the base fluid oil or water, thereby obtaining more available thermal power. Like the parabolic trough systems, htf is an integral part of the power tower system. These systems offer a wide range of opportunities to reduce costs of the energy supply. Concentrating solar power \ systems capture the suns thermal energy by using parabolic troughs, dishes and mirrors to fo\. Design of a parabolic trough solar collector using a. A thermal fluid or gas is used to receive the energy and then power a small piston, turbine or sterling. Large collector fields supply the thermal energy, which is used to drive a steam turbine, which, on its part, drives the electric generator. They consist of a solar field filled with hundreds or thousands of solar collector assemblies sca. The parabolic trough collectors ptc consist of solar collectors mirrors, heat receivers and support structures. It describes how to model a parabolic trough system with molten salt heat transfer fluid. In concentrating solar power technology, the optical efficiency of solar. In which parabolic trough systems are likely to be cost effective, and. Flowserve is the only pump manufacturer able to provide a solution for every application in parabolic trough solar power stations. Modeling parabolic trough systems, june 2014 youtube.
Csp systems use the sun as the thermal heat source as opposed to the photon energy of the sun as pv systems do. Flatplate collectors are not appropriate for these high temperatures. 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 power plants use parabolic trough collectors to concentrate the direct solar radiation onto a tubular receiver. A parabolic trough solar collector uses a mirror in the shape of a parabolic cylinder to reflect. I medium temperature solar concentrators parabolic troughs collectors e. Aron dobos all sessions last one hour and begin at 1 p. The initial installation cost of these parabolic trough solar collectors consti. Solar energy conversion and photoenergy systems vol. This report updates the baseline cost for parabolic trough solar fields in the united states within nrels system advisor model sam. The deployment, performance and operation of commercial, utilitygrade parabolic trough solar thermal power plants are wellunderstood and proven. Manual making of a parabolic solar collector gang xiao laboratoire j. The assumed solar field area in both cases was about 1. Concentrated solar power csp systems use very different technology than photovoltaic systems.
Optimization of parabolic trough solar collector system. This feature allows the parabolic concentrators to be integrated with solar thermal systems. The reflector, which concentrates the sunlight to a focal line or focal point, has a parabolic shape. Mountain time you must register to participate registration is free, but space is limited more details, registration information, and recordings of.
Parabolic troughs, which are a type of linear concentrator, are the most mature csp technology with over 500 megawatts mw operating worldwide. Parabolic trough collectors can also drive absorption cooling systems or other equipment that runs off a thermal load. Innovative technology solutions for sustainability. In a parabolic trough plant, a set of parabolicshaped mirrors is set on a structure so they can track the movement of the sun and concentrate solar radiation onto a. Parabolic trough solar thermal system parabolic trough. Solar parabolic trough 3d cad model library grabcad. On the csp side of the market, parabolic trough systems that have been operating in the u. Pdf optimization of parabolic trough solar collector. Dni, wind speed, ambient drybulb temperatureshould be the actual weather file with the time. Parabolic trough solar collector pdf basically a manual method to make high efficiency solar collectors against very low cost, which is.
For this task nrel contracted with worleyparsons group, inc. The oil flowing through the tube stores heat and then this heat is used to generate electricity in a conventional gener. A capacity factor figure for dishengine systems is not available. Pdf parabolic trough collector cost update for the system. Parabolic trough power plants constitute the biggest share of the installed concentrating solar power technology. The nearterm, 2015 case looks at two different configurations. This report documents this roadmapping effort and extends it to include a market assessment and a plan for the.
Jun 18, 2014 the modeling parabolic trough systems webinar was presented on june 18, 2014 by michael wagner of nrel. 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. The parabolic shaped mirrors are constructed by forming a sheet of reflective material into a parabolic shape that concentrates incoming sunlight onto a central receiver tube at the focal line of the collector. Survey of thermal storage for parabolic trough power plants.
A trough shaped parabolic reflector concentrates solar radiation onto a central receiver tube. Highcapacity offgrid solar generator rev 4 wiring diagram, parts list, design worksheet duration. Heat transfer enhancement analysis of tube receiver for. Most electric power plants use some form of fossil fuel as the thermal heat source to boil water into steam. Pdf a simplified design procedure of parabolic trough solar field. Pdf this paper presents a stepwise approach for designing a parabolic trough solar collector.
A parabolic trough is a type of solar thermal energy collector used in csp plants concentrated solar power. The solar option and solar collector solar energy is a very large, inexhaustible of energy, the power from the sun intercepted. Parabolic trough technology as a solar power solution has matured over the time, ever since it was first developed in 1980s. 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.
Sep 03, 2010 it is used to predict the performance of a given parabolic trough and compare competing technologies. Parabolic trough design pdf for industrial production of elastic closed parabolic trough boxes will be described in another article later. High efficient utilisation of solar energy with newly. In the receiver tube, a hightemperature heat transfer fluid such as a synthetic oil absorbs the suns energy. The skytrough is a high performance parabolic trough concentrating solar collector for use in. Parabolic dish system a parabolic dishshaped mirror reflects sunlight onto the central focal point of the dish.
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. It describes how to model a parabolic trough system with molten salt heat transfer fluid using sams physical trough model. Parabolic trough1 is the most mature technology for large scale exploitation of solar. Application solution guide concentrated solar power. This tube, frequently called a dewar tube, is usually filled with oil and carries the heated fluid to an engine similar to a traditional power plant. Pdf this paper describes an energy system that is designed to meet the demands of rural population that currently have no access to. Parabolic trough collector ptc is one of the configurations of csp. Simplified methodology for designing parabolic trough solar. Parabolic trough power plants ptpp are thus far mostly developed csp thermal plants that are operating commercially. Pdf design and manufacturing of parabolic trough solar.
Parabolic trough systems have been in wide use for utilitygrade power generation since the mid 1980s. Pdf an overview on parabolic trough solar collectors. Basic facts costs development program and cost estimates for mass production heat. Parabolic trough development was also taking place in europe and culminated with the construction of the iea smal l solar pow er systems projectdistributed collector system sspsdcs in tabernas, spain, in 1981. The high temperature heat from parabolic trough collectors can be used for producing. This facilit y consisted of two parabolic trough solar fields with a total mirror aperture area of 7602 m 2. Pdf parabolic trough collector cost update for the. Medium temperature solar concentrators parabolictroughs. Parabolic trough collector cost update for the system. Distinguishing between parabolic trough power plants, fresnel power plants, solar tower power plants and dishstirling systems, the parabolic trough power plants provide over 90% of the. Despite the construction of trough plants such as nevada solar one and andasol 1, public cost data for trough systems are lacking. Parabolic trough csp stations require a broad range of pumps to handle applications, including hightemperature heat transfer fluids htf, superheated feedwater, condensate and cooling water. Parabolic trough plants are inherently modular and scalable. Parabolic trough collectors are able to deliver high temperature heat, which is a basic condition for the efficient utilisation of great amounts of solar heat in hotels.
The theoretic design principle of a closed parabolic trough box can be found in 1. Parabolic trough collector cost update for the system advisor. Numerical modelling of a parabolic trough solar collector. In 2009, nrel undertook a detailed cost analysis to update the parabolic trough cost model within sam. Parabolic trough systems uses curved, parabolashaped reflectors that use mirror coating to concentrate sunlight on a tube filled with liquid. About 450mw trough systems have so far been put into operation with 400mw projects still under construction and nearly 7gw projects under development. The performance of parabolic trough collector system is highly dependent on. It has accumulated substantial experience by means of establishment of a small commercial industry to produce and market these systems. 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. It is, therefore at the laser focus of thermosol glass. Each sca is an independently tracking parabolic trough solar collector consisting of four major subsystems.
Create pdf files without this message by purchasing novapdf printer. Thermal performance of a parabolic trough linear collector. Solar electric generating systems segs 9 plants, 14 to 80 mw, 354 mw total built between 1984 1990. Concentrated solar power environmental and energy study institute. A large mirrored dish also known as a solar collector.
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