Parabolic trough solar concentrator pdf

Design and fabrication of parabolic solar concentrator with sole objective to define future projects to save natural gas 29jul08 2rizwan masood. Design, construction, and test of a miniature parabolic trough solar concentrator. Another important feature of designed project is the solar tracking of a parabolic mirror which increases the efficiency of a parabolic concentrator. Relative distance measurements to the concentrator rim to determine the lateral receiver deviation from the focal line in parabolic troughs ram. The economic and social signification of the method may be huge. It is widely used as a reflecting solar concentrator. The parabolic trough pt is the most used concentrator in csp concentrated solar power. Solar concentrators rensselaer polytechnic institute. This mirror was combined with a 30 oz vacuum tube and raised 70f water to 212f in 14 minutes. However, this concentrator technology is facing a significant challenge to increase its overall. Because of its singleaxis tracking, all the solar radiations fall parallel to its.

Module alignment measurement measurements in parabolic trough collectors to deter. John ericsson constructed in 1880 the first known parabolic trough collector. A simple stainless steel parabolic trough mirror that produces a near perfect linear beam. Designing a parabolic trough solar concentrator requires specifying. 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. 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. 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. Pdf abstractsolar collector in the shape of a parabolic mirror reflects the incident solar energy on the longitudinal axis of the solar collector. A 3d numerical model is developed to evaluate the performance of the receiver with various configurations of porous inserts of square, triangular. Parabolictrough solar concentrating systems are parabolic shaped collectors made of reflecting materials. Parabolic trough collectors ptc are frequently used for steam generation. 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. Fabrication of parabolictrough concentration for solar.

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. Geometric, optical and thermal analysis for solar parabolic trough. Pdf an overview on parabolic trough solar collectors. Solar collector concentrated solar power plant industrial process heat heat. Pdf design of a parabolic trough solar collector using a. Medium temperature solar concentrators parabolictroughs. Concentrator measurement and solar filed consulting services.