Viessmann Vitosol100 - Page 23

2.4Selection of collector types
Vitosol 100
z
h



h
23
VITOSOL
z = Collector row distance
h = Collector height
 = Collector angle of inclination
 = Angle of the sun (see page22)
The following applies to these calculations:
z
h

sin(180°  (  ))
sin 
Example 1
Type w 2.5
h = 1105 mm
 = 45º
 = 42º (position of the sun at the
beginning of September, Berlin,
see page22)
z 
h  sin(180°  (  ))
sin 
z 
1105mm  sin(180°  87°)
sin 42°
z = 1649 mm
Example 2
Type s 2.5
h = 2.352 mm
 = 45º
 = 14º (position of the sun 21.12.,
Berlin, see page22)
z 
h  sin(180°  (  ))
sin 
z 
2352mm  sin(180°  59°)
sin 14°
z = 8.333 mm
Note
Select the angle of the sun so that, at noon
on the 21.12., the sun can hit the collector
surface without shade. Subject to latitude,
in Germany this angle lies between 12º
(Flensburg) and 20º (Freiburg).
5822135 GB