This model adds another element for the roof. Roofs commonly
exhibit the same excitations as exterior walls but have different
coefficients of heat transfer due to their orientation. Adding an
extra element for the roof might lead to a finer resolution of the
dynamic behaviour but increases calculation times. The roof is
parameterized via the length of the RC-chain nRoof,
the vector of capacities CRoof[nRoof], the vector of
resistances RRoof[nRoof] and remaining resistances
RRoofRem.
The image below shows the RC-network of this model.

massDynamics.nExt to nRoof for
RRoof and CRoofalphaRoof to hConRoof,
alphaRoofConst to hConRoof_const