Energy performance of shading devices for thermal and lighting comfort in offices
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In this paper, the effect of the windows shading systems both on visual and thermal comfort and on the total building energy needs (for heating, cooling and artificial lighting) has been analysed. An open-space office module with different window characteristics has been simulated with EnergyPlus 7.1, controlling the internal conditions with appropriate comfort setpoints. Different window distributions (on a single façade or on opposite façades), and two orientations have been analysed, varying the glazed area and the glazing type. Two moveable shading systems have been considered (roller shades and venetian blinds), controlled by two setpoint variables: the glare index and the total solar radiation incident on the windows.