ABSTRACT
This work describes the operation a non-imaging static concentrator lens utilising refraction and total internal reflection with a geometrical concentration ratio of 2. Analysis with computer ray-tracing indicates a lens efficiency of 94% for collection of the solar energy in Sydney, Australia. The annual averaged optical concentration ratio is 1.88 for direct insolation within ±60° in the East-West and ±25° in the North-South directions, referenced to the normal of the lens. Peak optical concentration ratio for an ideal lens is 1.91. Analysis modelling indicates that non-imaging static concentrators utilising refracting and total internal reflecting surfaces can exhibit high optical efficiency and concentrate solar radiation over large accentance angles.
