Figs. 7 and 8 show the pyranometers installed outside and inside the test room to measure the solar radiation.
The experiment is performed with a 6 mm clear glass window with a 25.4 mm (1 in.) venetian blind installed.
The blind is made of aluminum with a slat curvature radius of 71.5 mm and 0.3 mm thickness.
The slat color is cream.
The slat width is 25.4 mm.
The spacing between two consecutive slats is 20 mm.
The distance between the glass inner surface and the center of the blind width is kept at 40 mm.
The optical properties of the glass window and the slat properties are shown in Table 1.