Net ZEB Case Studies - Modeling, Design, and Optimization of Net-Zero Energy Buildings - page 448

Fig. 7.70 Solar heat gain and daylight illuminance of thermal zones

Table 7.17 Space cooling energy of different design and operation
scenarios

Exterior
Reflector

Nighttime
Ventilation

Space Cooling Energy Consumption per
Meter Façade Width (kWh/m)

No no 7.10

Yes no 7.20

Yes 10 ACH 4.13

Yes 30 ACH 3.82

Nighttime building free cooling with outdoor cool air is adopted to reduce
the space cooling load. Whenever the room temperature is less than 3 °C
lower than the daytime room temperature setpoint and exterior air
temperature is lower than room air temperature, free cooling is activated.
Increasing the ventilation rate from 10 to 30 ACH results in a marginal
reduction(4.3%)incoolingenergyconsumption.Thereisalsonosignificant