OUTDOOR LOUVER GRILL 210 TA INSTRUCTION

Example of selection
The following dimensions are normalised for overpressure
dampers. With respect to the width, it is possible to provide
intermediate dimensions.
For a known air flow rate which should pass through the
damper (e.g. 3000 m
3
/h), and setting, for example, the face
velocity at 4 m/s, the frontal area (A
f
) of the damper can be
obtained by using the following equation
:
A(
f
) = Q(m
3
/h) / V
f
(m/s) • 3600 = 3.000 /4 • 3600 = 0,21 m
2
W
ith which we obtain a damper 230 SP of 450 x 480 or
equivalent dimensions
To determine the pressure loss the following graph should be
used. In the damper of the above example the pressure loss
will be about 37 P
a.
Standard dimensions
18
Series 100-200