The main features of a ceiling
fan is to move the entire air in the room, not
creating a local wind as in other fans. To determine
the model and mounting position, consider the
condition below:
H : distance form blade to floor (M)
R : radius of effective floor space of wind spread
(M)
S : effective floor area (M2)
Calculation
Formula
R : coefficient x
H
S :hR2
, where
h
= 3.14
Size
of Blade
H
(M)
S
(M2)
Coefficient
120
cm
2.5
8.3
0.65
150
cm
3
12.5
0.65
2.
Calculation If More Than One Unit Required
L : Distance between ceiling Fan
to another (pitch in M)
A : Distance of overlapping air throw between fan
B : Distance between tip of fan to wall
BL : Blade length (M)
L : (RX2) - 0.4 , where 0.4 is maximum allowable
overlapping of air throw between fan
L : (RX2) - 0 , if minimum A = 0
To calculate B = R - BL
