Optimal Design of a Secondary Optical Element for a Noncoplanar Two-Reflector Solar Concentrator

Table 1

Optical performance of the two-reflector solar concentrator with preliminary optimal SOEs from Phase I and Phase II.

Phase		SOE	(mm)	(mm)	(at 0°)	(at 1°)
I	Q1	Refractive pyramid	13	12	84.24%	75.64%	1.00	1.39
	Q2	Refractive pyramid	15	12	82.83%	75.00%	1.03	1.54
	Q3	Refractive cone	18	14	82.00%	74.82%	1.06	1.51
II	D1^*	Refractive pyramid	15	10	83.52%	80.88%	1.11	1.51
	D2	Refractive cone	18	12	83.26%	78.08%	0.97	1.63

The optimal design founded in this study.