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Axial fans

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AC axial<br />

A series<br />

Accessories EC-SYSTEMS ESM Q-motor<br />

Technology<br />

EC axial<br />

S series<br />

EC axial <strong>fans</strong><br />

AC axial<br />

K series<br />

AC axial<br />

S series<br />

AC axial <strong>fans</strong><br />

General<br />

information<br />

Effects with guard grilles<br />

Mounting a guard grille reduces the air performance of the axial fan.<br />

1<br />

Without guard grille<br />

Curve<br />

[Pa]<br />

1<br />

[%]<br />

2<br />

With guard grille<br />

2<br />

2 1<br />

0<br />

0<br />

[m³/h]<br />

The pressure drop in Pa can be roughly calculated according to the<br />

following equation:<br />

Δp GG = .<br />

GG 10 -8 . V 2 V in [m 3 /h]<br />

For the guard grilles used at ebm-papst, the correction factor GG can be<br />

used depending on the impeller diameter D from the table to the right.<br />

Diameter D<br />

130<br />

143<br />

180<br />

200<br />

250<br />

300<br />

315<br />

350<br />

400<br />

450<br />

500<br />

560<br />

630<br />

710<br />

800<br />

910<br />

990<br />

Correction factor<br />

10000<br />

6600<br />

2550<br />

1650<br />

650<br />

300<br />

240<br />

150<br />

90<br />

55<br />

35<br />

20<br />

11<br />

6<br />

3<br />

1.5<br />

0.9<br />

GG<br />

399<br />

Contacts

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