Dimana α1 adalah sudut azimuth norm

Dimana α1 adalah sudut azimuth normal ke permukaan kolektor, dan β2 adalah sudut kemiringan dari tanah, seperti ditunjukkan pada Gambar 5. Jika θ lebih besar dari 90◦, maka matahari berada di belakang kolektor

Results (English) 1:

Where α1 is the azimuth angle normal to the surface of the collector, and β2 is the angle of inclination of the ground, as shown in Figure 5. If θ is greater than 90◦, then the sun is behind the collector

Results (English) 2:

Where α1 is a normal azimuth angle to the collector surface, and β2 is the tilt angle of the ground, as shown in Figure 5. If θ is greater than 90 ◦, then the sun is behind the collector