Author : Sabah Auda Abdul Ameer and Haroun A.K Shahad

This study includes a comprehensive review of researchers related to optical concentrators. Parameters which affect their concentration levels are likewise talked about. Their properties, designations and mathematical formula are mentioned. Many designs have been set forth for concentrating collectors. Concentrators can be classified the reflectors or refractors, cylindrical or surfaces of revolution, and continuous or segmented. Receivers can be convex, flat, or concave and can be covered or uncovered. Many modes of tracking are possible. Concentration ratio (the ratio of the collector aperture area of absorber area, which is approximately the factors by which radiation flux on the energy-absorbing surface is increased) can vary over several orders of magnitude. With this wide range of inventions, it is difficult to develop general analyses applicable to all concentrators. Thus concentrators are treated in two groups: Non-imaging collectors with low concentration ratio and linear imaging collectors with intermediate concentration ratio. Some basic considerations of three-dimensional concentrators that can operate at the high end of the concentration ratio scale are also noted.

Keywords: Optical concentrator; non-imaging; CPC

Article published in International Journal of Current Engineering and Technology, Vol.7, No.1 (Feb-2017)