Page 44 - Solar Power in Building Design The Engineer's Complete Design Resource

14 SOLAR POWER SYSTEM PHYSICS

Figure 1.6 Internal wiring of a solar power cell.

variations (due to the rotation of Earth about its axis), seasonal variation (due to the tilt of
Earth’s axis), annual variation (due to the elliptical orbit of Earth around the sun), solar
flares, solar sunspots, atmospheric pollution, dust, and haze. Figure 1.7 depicts a photo-
voltaic panel module assembly mounted on a galvanized Unistrut channel.
Photovoltaic solar array installation in the vicinity of trees and elevated structures,
which may cast a shadow on the panels, should be avoided. The geographic location
of the project site and seasonal changes are also significant factors that must be taken
into consideration.

Figure 1.7 Photovoltaic panel module assembly mounted on a
galvanized Unistrut channel.