In modern, extensively glazed office buildings air conditioning is increasingly applied even in moderate and cold climates. Night-time ventilation is often seen as a promising passive cooling concept. However, due to uncertainties in the prediction of thermal comfort, architects and engineers are still hesitant to apply passive cooling techniques. The concept involves cooling the building structure overnight in order to provide a heat sink during the occupancy period. As this requires a sufficiently high temperature difference between the ambient air and the building structure, the efficiency...