Fig. 6 shows the layout and dimensions of the test room.
Two pyranometers ((Kipp & Zonen) model CM 6B) and a shading ring are installed outside the test room and are used to measure the incident global solar radiation and diffuse solar radiation.
Another pyranometer ((Kipp & Zonen) model CMP 6) is installed inside the test room and is used to measure the transmitted solar radiation through the glass window and a venetian blind.