Influence of Various Angles of the Venetian Blind on the Efficiency of a Double Skin Facade

The present study analyses the effect of solar protection arrangements on thermo-aeraulic regime inside a double-glazed facade coating (DFC), forced ventilated channel and under imposed working conditions. The facade has been considered being with “full South” guidance, exposed to normal solar radiation, with constant intensity. The “Venetian blinds” protection type has been investigated in optimum assumptions on the basis of previous researches [9], with regard to its positioning at 1/4th of the width of the channel, near exterior glazing and forced ventilation, under constant flow rate of 1260 m3/h. The opening angle of the blinds, as the sole variable parameter, has been amended in succession between 0° and 90°. Solar protection influence analysis has been carried out by numerical simulation, with the specialized computing program ANSYS-Fluent, laying down, for each opening angle of blinds, variation diagrams of air streams temperatures and velocity along the width and along front panel channels.