CIB2007-197 Integrating Ventilated Façades in Hot and Humid Climates Matthias Haase and Alex Amato ABSTRACT There is a need for sustainable building design in Hong Kong. The Hong Kong climate is sub-tropical with hot and humid weather from May to September and temperate climate for the remaining 7 months period. A mechanical ventilation and air conditioning (MVAC) system is usually operated to get rid of the high peak cooling loads. One of the most significant technologies for energy savings in an office building is the façade. This work evaluates different ventilated façade designs in respect to energy consumption savings. It further proposes a new type of airflow window with a solar chimney to control the exhaust airflow. It could be demonstrated that this façade design can play an important role in highly glazed buildings. An important factor was the development of a climate sensitive regulator that helps to take advantage of the hot and humid climate. Keywords: Double Skin Facade, Hot-and Humid Climate, Building Simulation. 1. INTRODUCTION There is a world-wide need for a sustainable development (Behling c1996.). 52% of the total energy in Hong Kong is used by buildings. Office and commercial buildings are using 37% total energy (emsd 2003). Several ways of reducing energy consumption by applying energy efficient technology in the built environment have been identified (Baker c2002.; CEC 2002; Goulding et al. 1992; Krishan c2001.; Lee et al. 1998). Thus it is important to develop buildings that consume less operational energy during its life cycle. Especially in moderate to cold climate like Europe new building concepts were tested. They took into account the outdoor CIB World Building Congress 2007 206