but in fact this variable is very linked to the size of the collecting surface.
For example, if a too large tank is selected, the watertemperature achieved would be too low; in addition the tank size
could be conveniently selected for average days, but in this way the
water temperature would be penalized in cloudy days. On the
contrary, in this pulsed scheme the size of tank is fully independent
of the water temperature stored; thus we could select a larger tank
in order to gain more flexibility in the operation scheme meanwhile
the water temperature is function of the selected Tp. This key and
novel feature leads us to adopt a smart controller