The Energy Performance of Buildings' Window Systems

Buildings are responsible for over 30% of the heat loss in the building envelop. However, window creates a sense of spacious for the room and provides natural lighting, view and ventilation for the interior space. It is important to consider windows with the highest rate of energy consumption in the building envelop, being five times more than the other elements. With proper selection of window glazing and their design its help to minimize the energy consumption level. The limitation of this research is that it has only focused on vertical and fixed window plates without any shading devices; how they will minimize the heat loss by improving the glazing material or replacing the glass material to block the infrared radiation and prevent unwanted heat gain in summer period, in the Colored Building of the Faculty of Architecture at Eastern Mediterranean University, North Cyprus.