Net ZEB Design Processes and Tools - Modeling, Design, and Optimization of Net-Zero Energy Buildings - page 175

into consideration previously, the false ceiling should be designed so that
this thermal inertia is still accessible. Determining the interior finishing
provides detailed geometry and reflectances and allows evaluation of the
daylighting potential with more precision. It will also help assess its impact
on acoustics. Figure 4.6 presents an example of an effective solution to
expose thermal mass while admitting daylight and absorbing sound. In this
figure, a gap was left between the false ceiling and the wall to allow for air to
reach the concrete deck above.
Fig. 4.6 Example of false ceiling that permits air circulation for thermal
activation of concrete ceilings (BC-EPFL Lausanne Switzerland, Architect:
R. Luscher Lausanne, Energy Concept: Sorane S.A, Ecublens)
Electric lighting optimization requires complex simulation tools, such as
Radiance or Relux, that take into account detailed geometry, internal
surface finishes, as well as internal partitions or objects. In the technical
design phase,resultsobtained withthesetypesoftoolswillallowoptimizing
the location of the lighting fixtures and refining the dimming and other
control strategies.
Somezonescannotbesimulatedaccuratelyusingstandardsimulationtools,
especially large glazed spaces like atria. CFD simulations can be used to
study the ventilation of atria and optimize the openings and the control
algorithm. CFD can also be used to optimize the location of terminals
because the draft caused by HVAC terminals can affect occupant comfort.
If considered critical, CFD can also be a useful tool for in-depth studies of