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Basic parameter for domestic fan selection

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DS 5x400х239

DS 5x400х239
DS 5x400х239
  • DS back view.

Color scheme

 Beige RAL 1015  Black RAL 9005  blue RAL 5005  Brown RAL 8017  Grey RAL 7001  White RAL 9016

ParameterValueUnit
Material
Aluminum
Form
Rectangular
Adjustment
Non-regulated
Air pass
0.045
m² 
Number of slits
5
DS 5x400х239
SizesLH
mm400239

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Calculation formula   Correction factor Кp
ΔPp = ΔP х Кp     22° 45°
  Кp 1 1.25 1.5
Calculation formula   Correction factor К
LWA = LWAO x K   Sap [m2] 0.01 0.02 0.05 0.1 0.2 0.4
  K [dB(A)] -9 -6 -3 0 +3 +6

Designation:

ΔPp - pressure loss at various vane positions [Pa];
ΔP - pressure loss [Pa];
Кp – correction factor for pressure loss calculation depending on louvre deflection angle;
LWA - sound power level [dB(A)];
LWAO - sound power level for air pass 0,1 m2 [dB(A)];
K - correction factor for sound power level calculation depending on air pass [dB(A)];
Sap - air pass [m2];
V - rated speed [m/s].