Page 139 - HVAC Pump Handbook
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HVAC Pump Performance
136 HVAC Pumps and Their Performance
Figure 6.1 Typical head-flow curves for most HVAC pumps.
is the head-flow curve for a medium-sized constant-speed pump, and
it is in the form normally found in pump manufacturers’ catalogs.
Included in this figure are the efficiency curves, the brake horsepower
curves, and a net positive suction head (NPSH) curve. The NPSH
required curve will be discussed later in this chapter.
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