Abstract:
Particular ventilation design can create effective natural air
movement into the indoor environment by flowing the outside wind.
The window, as a kind of ventilation, has various designs. It combines
three primary constructions: simple opening, vertical-pivot, and
horizontal-pivot opening. Each has a particular characteristic to
control air velocity and direction which flows through it. However, the
wind is not always certain in the mean of its velocity and direction,
which heavily relies on the season. This study is written to investigate
the single window’s performance by measuring its effectiveness to
control wind velocity in some directions. The effectiveness is
conceived as a percentage rate that a window could maintain the
outside wind velocity when it flows through the window. This
experimental study employs three factors that are wind direction,
window design and opening angle. This study operated 1:1 model of
ten window designs, a simulation wall, and an electric fan to generate
the Building Physics Laboratory's intended wind in the Department of
Architecture, Institut Teknologi Indonesia. The result shows that
maximum opening angle with perpendicular wind is the most
effective situation to flow wind through all window—except simple
casement window—with the rate ranging at 85,16% – 123,76%. The
wind could also be more speeded up 109,63% – 193,90% when it
aligned to all windows. Simple casement window even reaches
266,22% when the wind perpendicular.
