PV*SOL Expert 6.0 - Manual - Valentin Software

10.1.5 Installation Type
System > Technical Data > PV Array / Array i > Installation Type
The installation type influences the heating of the PV modules.
With a ”Free-Standing” mount the entire module surface (front and back) exchanges
radiation with its environment.
For a roof-top mount ”With Ventilation” only the upper module surface is available for
radiation exchange, and for roof-top or façade integration ”Without Ventilation” this is
reduced further. With roof or building integration the output is reduced further by a lack of
convection.
High module temperature leads to a drop in module efficiency. Yields for PV systems with
free-standing mounting are therefore higher than those for systems with ventilation space
which in turn have higher yields than systems without ventilation space.
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