In the framework of concentrator’s geometry, parameters like inclination angle and size of mirrors, height H and width D of concentrator, concentration factor C and mirror’s utilisation factor M have been laid under analyses. Necessary formulas have been derived and implemented to a software application that has been prepared under Excel environment utilizing the VBA programming techniques. Application is named „CLON Geom" (fig. 4). This application provides all the necessary tables and graphs for analyses. For illustration, in this paper some results for geometrical concentration factor, the most important parameter, is shown.

Three different definitions of geometrical concentration ratio are given for CLON type of concentrator:

Incremental concentration factor Ci is understood as a an addition of current zone to the total concentration factor or the cumulative concentration factor, respectively.

Cumulative concentration factor C is a factor that cumulates the contributions from separate zones up to the current zone.

C = Z Ci (9)

i=1

Total concentration factor C is, in fact, the cumulative concentration factor after the last, the nth zone.