Ecology Double Glass Facade - Case Study

The facade of the office levels has mechanically ventilated windows. The warm air in the room is extracted above the lighting units, so that the air also takes up their additional heat. Then this air is fed via specially shaped ducts at the level of the topmost transoms into the narrow cavity of the story-height ventilated windows. Here the air is warmed further by taking up heat from radiation of the glass; it is then taken out at the bottom of the window and drawn forward to the air conditioning system of the building. The aim in extracting the air via the lighting and then down from the top to the bottom of the cavity, is to utilize the internal heating loads as much as possible in achieving higher temperatures on the surface of the window during colder periods; this improves the thermal comfort in the office space near the windows.*