Cell Incidence Angle Distribution in the ArcSol CPV Element

The distribution of incidence angles on the receiver is measured by slicing the its reflector quadrant into a series of slices of increasing angular separation from the view axis. The upper right view shows the quadrant as seen from the receiver, wherin the slices appear as concentric rings. The other three views show the quadrant with no perspective from the three axes.

The ArcSol Iris^TM reflector focuses directed incident light onto the receiver cells with a low average angle of incidence. The following table shows the distribution of aperture area as a function of angle-of-incidence of light onto a receiver, where a reflector quadrant is sliced into a series of nested rings, each spanning five degrees of incidence angles. The aperture areas of the slices are computed by summing the areas of the projections of reflector faces within each ring onto the plane perpendicular to the reflector's normal direction.