When Do You Need To Buy A Solar Panel Stand When Installing Solar Power?
Sep 17, 2018
According to China's national conditions, it is mainly divided into three kinds of roofs: cement roof, color steel roof and tile roof. For photovoltaic installation systems solar panel stand, there are two main types: flat roofs and sloped roofs.
In addition to knowing what kind of roof you are, you need to know the orientation of your home and the area that you can use to install solar PV.
The orientation of the roof
The installation direction of the solar panel stand is required. It is best to install the PV panels in the south because we are in the Northern Hemisphere. When the power panels are facing south, they generate the highest power and can accept the best sun. radiation. In fact, in the clear summer, the maximum energy of solar radiation is after noon, when the direction is slightly westward, the maximum power generation is obtained; likewise, the maximum solar radiation direction in winter is slightly eastward. Therefore, as long as your roof is within ±10° of the south, it does not have much impact on power generation.
shadow part
Not all south-facing roofs can be tiled, we have to consider that the surrounding trees and other buildings will not block the PV modules. Obstructions can cause hot spots on solar panel stand, which not only affects the overall power generation, but also causes fatal damage to the panels.
Actual available area
Judging the direction of the roof is easy, but how to calculate the occlusion area of the obstacle? There is a simple algorithm. The width obscured by the obstruction can be approximated by the height of the obstruction × 2. Subtract this area from the total area of the roof of the installed component, which is the actual usable area of the roof.
Why are you divided into flat roofs and sloped roofs?
In general, the roof of the sloping surface (including the colored steel roof and tile roof) does not need to be paved. Instead, it is laid at the angle of inclination of the current roof during installation. Since there is no need to consider occlusion between components, the component can be completely covered and covered. Therefore, in the absence of roof attachments, the use of the beveled roof will be higher than the horizontal roof. The flat roof is the one that needs to buy a solar panel stand bracket.
