Table 3

Impeller B3 and B4–geometric parameters.

  Impeller B3 Impeller B4 Description
D1 [mm] 50 Inlet diameter
D2 [mm] 138 Outlet diameter
β2 [°] 8.2 Outlet blade angle
ϕ2 [°] 486 Wrap angle
Balanced No Yes Dynamic balancing

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