Solar-supported heating networks in multi-storey residential buildings

Figure 27: The entire collector area mounted on the building roof with the shortest possible way to
the heating unit transfer station (picture source: Solution Solartechnik, Upper Austria, Austria).
The appropriate wind loads have to be taken into account when measuring and installing the frames
and the mountings. While only suction forces have to be taken into account for roof-integrated
collectors, collectors that are set up in the open are subject to wind forces (suction wind and wind
pressure) from all directions. Extensive calculations of wind loads and of the static requirements can
be found in the publication titled “Große Solaranlagen – Einstieg in Planung und Praxis” (Remmers,
1999). As shown in Figures 28 to 32, in practice structural engineers and solar technology companies
use different mounting techniques.
Figure 28: Each support construction break through the sealing surface of the flat roof. Because of
many breakthroughs and thereby a higher risk for leakage should this mounting technique be avoided
(picture source: AEE INTEC).
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