Page 120 - HVAC Pump Handbook

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Physical Description of HVAC Pumps

Physical Description of HVAC Pumps 117

Figure 5.8 Turbine type, axial-flow pumps. (From Hydraulics Institute Standards.)

large cooling tower pump installations. These pumps have medium to
high specific speeds. The impellers are almost always semiopen type.
3. Propeller. These impellers, as the name implies, look like multi-
bladed propellers. They have high specific speeds and are designed for
very high capacity, low-head applications. They are not found very
often in the HVAC field.

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