There is an increasing demand for better environment and high performance of office buildings. A double skin facade (DSF) has advantages of energy saving, protection from external noise and wind load, daylighting control, reduction of asymmetric thermal discomfort, etc. However, there is too little information on control of the systems and its effect on their performances (energy, daylighting, thermal comfort, ventilation). Thus, this paper aims to investigate performance of the DSF with three different control strategies: 1) rule-based approach, 2) rule-based slat angle control + heuristic airflow control, 3) optimal control of slat angle and pseudo-optimal airflow control. It was found that the difference in energy performance between the aforementioned three control strategies is significant, especially in winter season. This is caused by dynamic airflow control that reduces cooling energy efficiently. Surprisingly, it was found that the effect of dynamic control of slat angles has little impact on energy use.
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