Parabolic trough solar concentrator pdf

Designing a parabolic trough solar concentrator requires specifying. Medium temperature solar concentrators parabolictroughs. In a parabola all of the incoming rays from a light source in this case the sun are reflected back to the focal point of the parabola. A 3d numerical model is developed to evaluate the performance of the receiver with various configurations of porous inserts of square, triangular. Because of its singleaxis tracking, all the solar radiations fall parallel to its. Can be performed in different elevation angles to detect receiver movement. However, this concentrator technology is facing a significant challenge to increase its overall. Parabolic concentrator, solar distillation, solar tracker, thermal efficiency, condenser. Fabrication of parabolictrough concentration for solar. Design, construction, and test of a miniature parabolic trough solar concentrator.

Solar concentrators rensselaer polytechnic institute. Parabolictrough solar concentrating systems are parabolic shaped collectors made of reflecting materials. Module alignment measurement measurements in parabolic trough collectors to deter. Pdf an overview on parabolic trough solar collectors. The basic design of the closed collector is given in section 2. A distinct property that it has is that it can focus all the parallel rays from the sun to a single focus point, f as shown in figure 2. The parabolic trough pt is the most used concentrator in csp concentrated solar power. Pdf abstractsolar collector in the shape of a parabolic mirror reflects the incident solar energy on the longitudinal axis of the solar collector. Pdf parabolictrough solar collectors and their applications. John ericsson constructed in 1880 the first known parabolic trough collector. It is widely used as a reflecting solar concentrator. Design and fabrication of parabolic solar concentrator with sole objective to define future projects to save natural gas 29jul08 2rizwan masood. The initial installation cost of these parabolic trough solar collectors consti. This paper reports the design, construction, and evaluation of a solar parabolic trough concentrator ptc with a rim angle of 45, a length of 4.

The collectors reflect the incident solar radiation onto its focal line toward a receiver that absorbs the concentrated solar energy to raise the temperature of the fluid inside it as shown in fig. This mirror was combined with a 30 oz vacuum tube and raised 70f water to 212f in 14 minutes. Not only the production cost drops to far blow the other manufacturing methods of parabolic troughs, but also it makes the solar energy collecting cost substantially lower than any fossil fuel. Parabolic trough collectors ptc are frequently used for steam generation. Solar collector concentrated solar power plant industrial process heat heat. The bending of a receiver tube in twophase flow under stratified conditions when water is first introduced to the hot steel receiver of a 14. Concentrator measurement and solar filed consulting services. Relative distance measurements to the concentrator rim to determine the lateral receiver deviation from the focal line in parabolic troughs ram. Pdf numerical study of porous finned receiver for solar. Pdf solar collector in the shape of a parabolic mirror reflects the incident solar energy on the longitudinal axis of the solar collector.

The economic and social signification of the method may be huge. Another important feature of designed project is the solar tracking of a parabolic mirror which increases the efficiency of a parabolic concentrator. Design, construction and evaluation of parabolic trough collector. In this article a new receiver for parabolic trough concentrator is proposed to enhance heat transfer. Geometric, optical and thermal analysis for solar parabolic trough. If the said parabola is extended along an axis becoming a trough the solar rays are concentrated along a line through the focal point of the trough. Pdf design of a parabolic trough solar collector using a. A simple stainless steel parabolic trough mirror that produces a near perfect linear beam.