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 from 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 | 0.66 |
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
Installation Condition:
Ceiling Fan installation height ≥ 30 cm.
Height from floor 2.5 ~ 3.0M
Blade distance between wall side ≥ 1M
Recommendation:
To install small size ceiling fan (120cm / 48”).
Recommendation:
To increase the ceiling fan pipe > 30cm (minimum).
