Blade forms
Whilst the variety of blade forms available for centrifugal fans is considerable, not nearly the same range is available in axial flow fans (Figures 1.86).
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Figure 1.86 Axial flow impellers — variety of blade forms |
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Forced vortex blade |
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Arbitrary vortex blade |
The blades may be designed to three principles:
Posted in Fans Ventilation A Practical Guide