Discrete Spectral Local Measurement Method for Testing Solar Concentrators

Table 3

The measured transmittance and the concentration efficiency of the concentration system.

Position (mm)	𝑥=−60	𝑥=−40	𝑥=−20	The center	𝑥=20	𝑥=40	𝑥=60	𝑦=−60	𝑦=−40	𝑦=−20	𝑦=20	𝑦=40	𝑦=60	Average
Transmittance %	88.46	90.16	86.36	92.50	87.88	89.68	86.72	89.84	89.26	85.25	86.05	90.52	87.50	88.51
Efficiency %	87.31	87.25	82.48	87.00	82.24	87.71	86.38	82.03	87.12	82.59	82.87	87.21	86.17	85.63