Nibe PVK 10-10, Руководство по установке, Страница: 8 / 28

Installation and positioning
The diagram shows insolation as a percentage of global ra-
diation in relation to surfaces at various orientations and
angle.
100
112
107
90
107
850
900
1000
1000
1000
1050
1050
900
900
950
950
950
800
800
850
90
1200
South
Source: SMHI
The map shows lines with the same global radiant flux, i.e.
the insolation measured at horizontal surfaces. Source: SMHI.
Using the diagram and the map, one can estimate the
annual value of the solar radiation falling on those sur-
faces where the solar panels are located.
100% is the insolation at a horizontal surface, which in
southern Sweden is between 900 and 1200
kWh/m²/year. The angle of inclined surfaces is 45°.
1. Calculate the annual solar radiation using the map.
The specific solar radiation for the installation is ob-
tained as a percentage, based on the location of the
solar panel according to the diagram.
2. Multiply the result by the installation’s peak output
(e.g. 2.95 kW, 5.9 kW, 8.9 kW, 11.8 kW, 20.7 kW).
3. Multiply the result 2 by a constant 0.9 to calculate
the energy production in kWh/year (with a reserva-
tion for shade, dirt and snow coverage).
Example: Stockholm, 6 kW, 45°, installation south.
1000 x (112/100) x 5.9 x 0.9 = 5947 kWh/year
PV Solar package Chapter 3 | Installation 8