Table 3. Impeller types used in bioreactorsa.
Impeller |
Flow |
NP |
Disk turbine |
radial |
6.0 |
Flat blade turbine |
radial |
2.8 |
Pitched blade turbine |
axial |
1.2 |
Curved blade turbine |
radial |
2.8 |
Hydrofoil |
axial |
0.3 |
Gas dispersing hydrofoil |
axial |
0.8 |
Marine helix |
axial |
0.3 |
Bar turbine |
radial |
0.7 |
a Dickey and Fenic, 1976; Kubera and Oldshue, 1992. |
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