Ray tracing study to determine the characteristics of the solar. Cost data for parabolic trough and solar tower technology has been updated to values from. I know the zemax, it is a commonly used optical design program for microsoft. Suitable layer systems were deposited on the industrial strip coater. Heat transfer analysis and modeling of a parabolic trough solar receiver implemented in engineering equation solver abstract this report describes the development, validation, and use of a heat transfer model implemented in engineering equation solver ees. Design and fabrication of parabolic solar collector. 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.
Freeform lens design to achieve x solar concentration. This tube, frequently called a dewar tube, is usually filled with oil and carries the heated fluid to an engine similar to a. Advanced lowcost receiver for parabolic trough solar power. Design, simulation and manufacturing of an integrated. The csp parabolic trough technology applies suntracking curved mirrors called parabolic troughs to maximize the suns energy and consequently the efficiency of heat production. Parabolic trough mirrors for solar thermal generation cannot produce the high concentration required for cpv. Pdf optical simulation of a parabolic solar trough collector. The reflector is made of thick or thin glass with several layers of coating a silver reflectivity layer, a protective copper layer and additional three layer coating. The mathematical models allow the calculation of different parameters of the solar parabolic trough system, the angle of inclination of the collecting surface and the forces acting on. The objective of this study is to develop analytical expressions for the determination of the thermal performance of parabolic trough. Experimental verification of optical modeling of parabolic trough collectors by flux.
Pdf design analysis of solar parabolic trough thermal. The mathematical models allow the calculation of different parameters of the solar parabolic trough system, the angle of inclination of the collecting surface and the forces acting on the system. The parabolic trough has the highest optical performance among all. Optical coatings optiforms offtheshelf parabolic reflectors need a custom parabolic. Many researchers were working on designing trough to improve the efficiency of the collector. Furthermore, the design of the arrays is flexible, allowing for a direct. Geometric and optical efficiency study for solar parabolic. Design of a parabolic trough solar collector using a. The optical design of the solar parabolic thermal concentrator, and operation are presented. Cpv, dishstirling heliostat field control and aim point strategy software kinematic drive concepts for solar tracking concentrating systems for chemical hightemperature concepts. The site can be a bit of a challenge to find stuff on, but its worth the effort. Torque tube design able to achieve good optical accuracy easy to assemble good optical. Parabolic trough systems uses curved, parabolashaped reflectors that use mirror coating to concentrate sunlight on a tube filled with liquid.
The test facility design allows study of the optical performance independent of the receivers heat loss characteristics. Main input parameters table 3 shows input parameters for three of the cases. The software greenius is distributed free of charge. Raytracing software tools have been widely used in the optical design of. As per the literature serve carried out most of them are working on hightemperature applications. The design parameter of a parabolic trough collector can be classified as geometric and functional. The ptc is made of aluminium in such a way that both the manufacturing and assembly processes do not require complicated technology or skilled labour.
Simplified methodology for designing parabolic trough. Soltrace is a software tool developed at the national renewable energy. Collection element on the optical performance of a. In this paper detailed optical design of the solar parabolic dish concentrator is presented. First, different possible layer systems were simulated and optimised by an optical design software. Thermal modelling and simulation of parabolic trough. Duanes redrok site is information central for diy heliostats and concentrating solar collectors. Collection element on the optical performance of a parabolic trough concentrating collector majedul islam 1,2, prasad yarlagadda 1 and azharul karim 1. Solar dish concentrators are generally concentrators that concentrate solar energy in a small area known as focal point. Progress to develop an advanced solarselective coating. The parabolic trough collectors ptc consist of solar collectors mirrors, heat receivers and. Raytracing software comparison for linear focusing solar collectors.
This study presents a detailed optical comparison between three representative csp collector designs including linear fresnel, parabolic trough, and centralreceiver technologies. The overall efficiency can be determined by testing the collector under. Collimates a light source or focuses a collimated beam parabolic profile eliminates spherical aberration surface enhancements. Optical design of a solar parabolic concentrating collector based on trapezoidal reflective petals.
The purpose of this work is to evaluate the optical and thermal efficiencies of a solar parabolic trough concentrated ptc installed in the green energy. Generation of a parabolic trough collector efficiency. For information, i want to design a solar concentrator for cpv system where a pv. This work presents the optical simulation of a parabolic trough collector. This solar technology is applied in many applications and so its investigation is common. Research article by international journal of photoenergy. These new layer systems were optically characterised and. A new design method was used to evaluate the mirror efficiency, through the study of the influence of geometric parameter variation on optical efficiency. Study on the optical properties of triangular cavity. Analytical expression of parabolic trough solar collector. Design and optimization of elliptical cavity tube receivers in the parabolic trough solar collector. Design of parabolic through collectors and fields solar tower power plant concepts tower, heliostats, heliostat field layout design of pointfocusing systems.
The overall efficiency of a parabolic trough collector is a function of both the fraction of direct normal radiation absorbed by the receiver the optical efficiency and the heat lost to the environment when the receiver is at operating temperature. Optical design of a solar parabolic thermal concentrator. Thomas ruegamer molten salt for parabolic trough applications. A new optical evaluation approach for parabolic trough. Modeling and performance prediction of solar parabolic. 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. Our aim is to design a novel parabolic trough collector which is useful in lowtemperature applications like domestic water heating. Parabolic trough collector, a novel design for domestic. Development of a concrete parabolic trough collector.
The purpose of this work is to evaluate the optical and thermal efficiencies of a solar parabolic trough concentrated ptc installed in the green energy park gep research platform in benguerir. How to include a dni file for optical performances simulation of a. An optical performance comparison of three concentrating solar. We study a design of closedbox parabolic trough concentrated solar collector. Effective parameters such as concentration ratio, incident angle correction factor, collector mass flow. The progress to develop a durable advanced solarselective coating will be described. Its uses do not contribute to emission of greenhouse gases and other pollutants to the environment.
Design and manufacturing of parabolic trough solar. Optical design is based on parabolic dish with 12 curvilinear trapezoidal petals. The functional parameters of a ptc are optical efficiency, instantaneous and all day. To evaluate performance of the ptc, four cities of iran with different weather conditions are chosen as case studies. There are good designs here that can be built on a budget and without exceptional mechanical skills. In this paper, an optical investigation study of a solar radiation collector has been treated through a precise model, which it has integrated all the geometrical characteristics of the concentrator to determine the optimal conditions of its. Optical models are implemented in soltrace, which is raytracing software. What is the most userfriendly raytracing simulation software for. Chapter 3 heat transfer analysis of parabolic trough solar receiver 50 3. They are mounted in the focal line of the collectors, absorb the concentrated solar irradiance and transfer the absorbed energy to the heat transfer fluid flowing through them.
By accepting an optical loss of a few percentages due to reflections by the cover, this design offers several advantages over the current open model, in particular a potential of significant cost reduction. Design and manufacturing of parabolic trough solar collector system for a developing country pakistan nusrat kamal raja 1, m. The multilayer glass construction ensures high optical accuracy, low. Parabolic solar collector ayush khare 1, sachin saxena, c h tyagi1. Freeform lens design to achieve x solar concentration with a parabolic trough reflector. The simulation tool of this analysis is the commercial software solidworks which simulates complicated problems with an easy way using the finite elements method.
Experimental verification of optical modeling of parabolic trough. It is sustainable since it cannot be depleted in a time relevant to the human race. Jie he et all have developed an optical design of a lfsc 16. A design support system for parabolic trough collector design is presented in this study. The model determines the performance of a parabolic trough solar. Optical design of twoaxes parabolic trough collector and. Design, construction, and testing of a parabolic trough. Heat transfer analysis and modeling of a parabolic trough. The parabolic trough collector is one of the most developed solar concentrating technologies for medium and high temperatures up to 800 k. Parabolic reflectors parabolic reflector diagram an electroformed parabolic reflector is a parabolashaped reflective surface used to collect and direct wave energy such as light.
Optical design of twoaxes parabolic trough collector and twosection fresnel lens for linetospot solar concentration carlos ramirez, noel leon, hector garcia, and humberto aguayo. For evaluation of this designed output have done thermal analysis of steam cycle. Optical and thermal analysis of a parabolic trough solar. With respect to the user friendliness of the developed software, evaluation tests were performed with selected final year mechanical engineering students. 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. Design support system for parabolic trough solar collector.
Study on the optical properties of triangular cavity absorber for parabolic trough solar concentrator a theoretical analytical method for optical properties of cavity absorber was proposed in this paper and the optical design software tracepro was used to analyze the optical properties of triangular cavity absorber. The optical performance of a concentrating solar power csp collector is critical to the overall efficiency of the system. Receiver tubes or heat collecting elements hce are a key component of parabolic trough solar thermal power plants. This study presents the most wellknown solar concentrating system, the parabolic trough collector, which is operating efficiently in high temperatures. Note that the parabolic trough collector optical performance depends on the diameter of the hce, which was varied during optimization. Optical efficiency is a direct gauge of the design elements that set the skytrough apart. Design and fabrication of parabolic solar collector mechanical project abstract solar energy is a renewable source of energy. Design and analysis for 1mwe parabolic trough solar. This paper provides a software simulation model for performance prediction of a parabolic trough collectors system ptcs, as a part of solar thermal power plants.
The results of the software were validated with published works. A new optical evaluation approach for parabolic trough collectors. Parabolic trough concentrating solar collector patent. Thermal efficiency of nt designs ptr 70 for temps 250c. Our objective to find the number of international standard size collector et100 for designed output 1mwe parabolic trough solar thermal power plant based on dsg method. We describe a freeform lens array with toroidal symmetry which intercepts the lowconcentration line focus to produce elongated highconcentration foci. The method makes it possible to carry out fast evaluation of trough collectors for design purposes. Parabolic trough solar field cost drivers suntrap receiver. Current parabolic trough collector development mainly aims at cost reduction. The suns rays are captured and reflected onto a receiver pipe filled with a heat transfer fluid water or thermal oil that is located in the central point of the. Trough solar systems use parabolic, singleaxis tracking mirrors to concentrate sunlight 3060 times onto an. The firstoptic techniques and analysis may be naturally extended to other types of csp technologies such as linearfresnel.
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