Page 129 - HVAC Pump Handbook
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Rishel_CH05.qxd 21/4/06 6:12 PM Page 126
Physical Description of HVAC Pumps
126 HVAC Pumps and Their Performance
LEAKAGE FROM
SEAL OR PACKING
AXIAL THRUST IS
DOWNTHRUST OR
UPTHRUST
LEAKAGE PAST
INNER STAGES
LEAKAGE PAST
IMPELLER TO SUCTION
Figure 5.16 Forces and leakages in an axial-flow (turbine) pump.
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