Real-time optimization of a double-skin façade based on lumped modeling and occupant preference

Real-time optimization of a double-skin façade system is developed for the so-called smart façade systems. It optimizes the performance of the system by rotating a motorized louver slat in the cavity and ventilation dampers at the top and bottom of exterior and interior glazing. One prominent feature of the system is the capability of dynamically reacting to the environmental input data through real-time optimization in terms of energy, visual comfort and thermal comfort. Users interaction with the system is Web enabled. Current state variables, weather data and energy flows are posted on a web page and an occupant with given privileges can choose the preferred operation mode or override the devices (louvers, ventilation inlet/outlet).