Determining The Collector Row Distance "Z - Viessmann VITOSOL-F Series Installation Instructions Manual

Determining the Collector Row Distance "z"

h
z
z
=
h
Legend:
z=Collector row distance
h=Collector height
α=Collector angle of inclination
β=Solar angle
h
Installation on Flat Roofs
or Freestanding Installation
IMPORTANT
When installing several collectors in
series, maintain a distance of "z".
Example:
Model SV
Toronto is located at approx. 43°
latitude.
1. Determine the angle of the sun β.
This should be chosen so that the
midday sun December 21 falls on the
second row of collectors without
being obstructed by shadows.
Solar angle β:
β= 90° - 23.5° - latitude
(23.5° should be accepted as
constant value for northern latitudes)
β=90° - 23.5° - 43°=23.5°
2. Calculating dimension "z":
h= 2380 mm (for model SH use
1056 mm)
α= 45°
β= 23.5°
2380 ⋅ sin(180° − (45° + 23.5°))
z=
sin 23.5°
2380mm ⋅ sin111.5°
z=
sin 23.5°
z=5553mm / 218.6"
Refer to Vitosol System Design
Guide for more information on
calculating "z".
Note:
Contact Viessmann Solar Tech Support
for assistance with calculating distance
"z".
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