Viessmann Vitosol100 - Page 22

2.4Selection of collector types
Vitosol 100
10203040506070
10203040506070
1615141312111098765
45
46
47
48
49
50
51
52
53
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55
Northern latitude in °
Eastern longitude in °
Angle of the
21.9. 21.6.
21.12.
Amsterdam
Hannover
Schwerin
Hamburg
Berlin
Magdeburg
Erfurt
Dresden
Cologne
Frankfurt
Nürnberg
Stuttgart
Munich
Zurich
Vienna
GERMANY
AUSTRIA
SWITZERLAND
21.6. 21.3.
21.12.
position of the sun º
22
VITOSOL
Calculating the distance between collector rows
Influence and consideration of shading
Initially, the angle of the sun is established,
accepting a partial shading of collector
rows arranged behind each other.
The following graphic allows you to check
the approximate values for this angle,
subject to the latitude and date.
Example
Determining the angle of the sun for Berlin at the beginning of September.
1. At the horizontal level, draw a line to
the right at the latitude of Berlin.
2. The diagonal stripes at the r.h. edge of
the map represent the individual
months (starting and ending on the
21
st
day respectively, counting from
21.12. to 21.6. from right to left
and
from 21.6. to 21.12. from left to right).
Mark an x on the map in accordance
with the date within the relevant stripe
on the horizontal level.
3. From this mark, draw a vertical line
downwards. The respective angle of
the sun can now be checked against
the scale (o).
The angle is approx. 42º (the same angle
of the sun also applies to early April in
Berlin).
5822135 GB