b
a
43
FLAT ROOF
Chapter 6
INCLINATION OF THE PANELS
Panel inclination must be adjusted on the basis of the latitude and aim of the solar system. Three diff erent
inclinations can be obtained using the fl at roof fi xing kit: 34°, 45° and 60°.
The following table supplied the optimal inclination angle of the panel on the basis of the type of use.
Panel inclination
Type of use
34°
DHW only, mostly for summer use
45°
DHW only, year-round use
60°
DHW and integration to heating system
SHADOWING
The minimum distance between panel arrays to prevent reciprocal shading depends on the collectors’
angle of inclination and on the local characteristics (e.g., the lowest position of the sun during the year).
The fi gure below and the relative table supply the indications of the minimum distance of the arrays for
installations in Italy. For installations at other latitudes the system designer shall have to determine the
correct values to apply.
Inclination of the collectors
Distance b
34°
4,6 m
45°
5,3 m
60°
6,2 m
a
a
b
tan
tan
5
,
23
90
+
=
−
−
°
=
δ = latitude
fi gure 6.23
