It points out the types of situations where parabolictrough solar water heating is most likely to be cost effective and describes the espc process available to federal facilities for parabolictrough projects. This line is called the focal axis of the parabolic collector. A parabolictrough collector ptc is a linearfocus solar collector, basically composed of a parabolictroughshaped concentrator that reflects direct solar radiation onto a receiver or absorber tube located in the focal line of the parabola see fig. Continued from part 3 this is a series of articles on the various technologies that can be employed to trap the suns energy. The skytrough is a high performance parabolic trough concentrating solar collector for use in. Performance analysis for parabolic trough collector fields. A parabolic cylinder mirror is formed by stretching a flexible reflecting material between two parabolic end formers. Performance simulation comparison for parabolic trough. Parabolic trough collector parabolic trough is a device in a parabolic shape, having small focal length of. The fundamental characteristics of the performance of a parabolic trough solar collector are its concentration ratio and its optical efficiency. The collector field is made up of a large field of singleaxistracking parabolic trough solar collectors. Boelterheat transfer in automobile radiators of the tubular type. Stitutes renewable energy for conventional energy in water heating.
Parabolic trough collector application in egypt built in 19 source. The results of the software were validated with published works. Pdf performance of a parabolic trough solar collector. With respect to the user friendliness of the developed software, evaluation tests were performed with selected final year mechanical engineering students. In steam analysis, we have found steam flow rate, inlet temperature of collector, heat required per. A moltensalt heat storage system that allows it to supply electric power for up to seven hours when there is an absence of solar radiation. Pdf design and construction of a parabolic trough solar. Parabolic trough collector cost update for the system advisor model sam parthiv kurup and craig s. A parabolic trough solar collector uses stainless steel sheet in the shape of parabolic cylinder to reflect and concentrate sun radiations towards an absorber tube made of g. Parabolic trough collector free download as powerpoint presentation. Heat transfer analysis and modeling of a parabolic trough solar.
Solar collector in the shape of a parabolic mirror reflects the incident solar energy on the longitudinal axis of the solar collector. Design support system for parabolic trough solar collector. A design support system for parabolic trough collector design is presented in this study. Parabolic trough solar collector pdf basically a manual method to make high efficiency solar collectors against very low cost, which is. The solar option and solar collector solar energy is a very large, inexhaustible of energy, the power from the sun intercepted. Because of different expansion behavior of the absorber tube and the glass tube 15 during collector operation flexible unions 17 are foreseen between absorber tube.
Energy equations for computation of parabolictrough. Analytical expression of parabolic trough solar collector. Sams physical trough model to estimatewas used the 2010 and future year costs of the parabolic trough technology. Pdf an overview on parabolic trough solar collectors.
Design and fabrication of parabolic solar collector. The absorber is a tube, painted with solar radiation absorbing material, located at the focal length of the concentrator, usually covered with a totally or partially vacuumed glass tube to minimize the heat. Design, construction, and test of a miniature parabolic. The baseline 2010 plant is a wetcooled, superheated steam power blockthat uses synthetic oil. Next an attempt was made to attach two of the 2 by 4s to the outer edges of the parabolic frame pieces. Journal of renewable and alternative energy technologies, 1. Parabolic trough collector water heating efficient. A parabolic trough solar collector uses a mirror in the shape of a parabolic cylinder to reflect. 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. A simple parabolic trough collector is designed, fabricated and tested. A parabolic trough is a type of solar thermal energy collector used in csp plants concentrated solar power. Parabolic trough power plants are the only types of solar thermal power plant technology with existing commercial operating systems. Energetic and exergetic investigation of a parabolic trough collector.
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. Modeling and simulation of heat transfer in a parabolic solar through collector. Ragheb 2011 the interest in the parabolic trough technology did not rise again until 1977, when the us department of energy as well as the german federal ministry of research and technology began to fund the. The equipment which is made up of the reflector surface curved mirror, reflector support, absorber pipe and a stand. I pipe located at the focus line of the parabolic trough collector. To determine the optimum design and operation of the parabolic trough solar collector throughout the year, an accurate estimation of the daily performance is needed. Design and fabrication of parabolic solar collector mechanical project abstract solar energy is a renewable source of energy. Sensitive analysis for the efficiency of a parabolic. The resulting mirror is made to track the sun, focusing the suns rays on a receiver tube.
Parabolic collector pdf a parabolic trough solar collector uses a mirror in the shape of a parabolic cylinder to reflect and concentrate. It is a construction of a matrix of mirrors to form the. Pdf in this paper are presented the results of designing a parabolic trough solar collector ptsc, and. Parabolic trough collectors ptc are frequently used for steam generation. Parabolic trough collector an overview sciencedirect. Thermal energy produced by a solar field with ptcs whose axis is northsouth oriented varies a lot during the year. Modeling and simulation to determine the thermal efficiency of a. Abstract this work presents the design, construction and investigation of experimental study of a parabolic trough solar collector ptsc. Energy equations for the computation of parabolictrough collector efficiency using. Solarpaces conference, mexico, oaxaca 2004 luepfert227 1 towards standard performance analysis for parabolic trough collector fields e. This solar technology is applied in many applications and so its investigation is common. The reflector, which concentrates the sunlight to a focal line or focal point, has a parabolic shape. In parabolic trough collector, long, ucurved mirrors focus the rays of the sun into an absorber pipe.
Owned by torresol energy and located in the south of spain, the valle 1 and valle 2 parabolic trough plants have. The operating performance and optical efficiency of the parabolic trough solar collectors ptcs are different in different regions and different seasons. Parabolic trough solar collector usually consists of a parabolic solar energy concentrator, which reflects solar energy into an absorber. The following is the supplementary data to this article. A parabolic trough solar collector using reflective flexible materials is disclosed. Brief introduction parabolic trough receiver is also known as heat collecting element hce. 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. As a key component of a parabolic trough solar collector, its thermal and optical performance as well as performance reliability determines the efficiency and economy of a. Parabolic trough collectors ptc is the most mature technology for producing heat in medium and high temperature levels and this has been. The larger collector aperture area concentrates reflected direct solar radiation onto the smaller outer surface of the receiver tube. In addition, sidebars provide indicators that a system. The design and fabrication of parabolic trough solar water heater for water heating was executed.
Parabolic trough collector cost update for the system. This book provides a technical overview of lowcost parabolic trough collector ptcs prototypes for lowtemperature heat demand. Pdf parabolic trough solar collector design, construction and. For evaluation of this designed output have done thermal analysis of steam cycle. The procedure employed includes the design, construction and testing stages.
Design, construction and evaluation of parabolic trough collector. Experimental performance evaluation of a solar parabolictrough collector using solar topocentric coordinates of bauchi nigeria. The objective of this study is to develop analytical expressions for the determination of the thermal performance of parabolic trough collectors. Design and analysis for 1mwe parabolic trough solar. It begins with a comprehensive but concise summary of the stateoftheart in ptcs, and presents a detailed mathematical model of such systems.
It is sustainable since it cannot be depleted in a time relevant to the human race. Parabolic trough collector technology torresol energy. The pipe is seated above the mirror in the center along the focal line and has a heatabsorbent medium mineral oil, synthetic oil, molten salt etc. Recent studies on the potential of the nanofluids on the performance enhancement of the parabolic trough. Experimental study of parabolic trough collector ptc and. Parabolic trough systems are the most used concentrated solar power technology. Table 2 shows the design characteristics of th e acurex, single axis tracking m. The parabolic trough collector has a receiver formed by several single absorber tubes. Development and testing of a prototype parabolic trough solar collector for steam generation at nsukka, south east nigeria. The parabolic trough collector is one of the most developed solar concentrating technologies for medium and high temperatures up to 800 k. An improved solar parabolic trough collector model has been developed in this study, to overcome the weakness of. Design and fabrication of parabolic trough solar water. Its uses do not contribute to emission of greenhouse gases and other pollutants to the environment.
A half inch hole was drilled in each frame piece to serve as the point of rotation for angling of the trough, and the attachment to the base. Heat losses from parabolic trough solar collectors. Federal technology parabolictrough solar alert water heating. In 1907, the germans wilhelm meier and adolf remshardt obtained the first patent of parabolic trough technology. A solar thermal collector captures solar radiation hitting a surface, the absorber, to heat a fluid in a hydraulic circuit. Results show that the thermal efficiency of the parabolic trough collector is. 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 mirrors track the sun on one linear axis from north to south during the day. Abstract this paper was concerned with an experimental study of parabolic trough concentrator designed and constructed. Parabolic trough collector prototypes for lowtemperature. A parabolic trough employs parabolic mirrors that act as collectors can be coated silver or polished for more efficiency. The single absorber tubes are supported by absorber tube supports 14 and surrounded by a glass tube 15. However, it is limited to a single or double factors for available system.