In case if your are selecting three identical spaces one above the other, as you mentioned, it is better to decentralise the whole system for the given component of energy simulation. For example, if you are attempting to use Lighting Power Density by combining all three floors, it would not give appropriate value in terms of resultant power consumption. As you pointed out, you may want to keep the lighting system and related power requirement as per independent floor-wise for simulation purpose and design-wise.
On Tuesday, 24 December 2013 5:00 PM, GermÃ¡n Campos <ecoeficiente@xxxxxxxxx> wrote:
That's right, you should use adiabatic surfaces for the internal floors.
Your approach is joining the three spaces into one (and internal floors as internal mass or you obviate it?).
If the floor area is the same I don't think it is too hard to multiply the W/m2 by three or dupplicate the lights definition (3 times) and assign the three to the same zone...