Net ZEB Case Studies - Modeling, Design, and Optimization of Net-Zero Energy Buildings - page 388

To admit daylight, the LH has large south-facing windows; the rear part of
the house has solar tubes to increase daylight levels.
A building automation system (BAS) optimizes energy performance of the
LH (e.g., HVAC system stops if windows are opened, the inlet temperature
of the water in the radiant floors is regulated according to the external
temperature, the air flow rate is regulated according to the CO 2 level in each
apartment). Regarding the monitoring of the building (see Figure 7.30 ) ,
more than 1200 sensors and actuators have been integrated with drivers
that allow communication between devices and systems.
Fig. 7.30 Leaf House user interface
The sensors are classified in three main groups: (i) room sensors (CO 2 , air
temperature and humidity sensors, electricity and thermal energy meters),
(ii) mechanical plant sensors (temperature sensors, thermal energy meters,
water flow meters, etc.), and (iii) weather station sensors. All data are
normalized and stored in a database.