PD763
Centrifugal Pumps: Testing, Design and Analysis
Day One
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Hydraulic Theory
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Hydraulics and fluid flow
Static head, velocity head
Friction losses through pipes and fittings
System Curve
Description of the various pump types
– Positive Displacement Pumps
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Dynamic Pumps
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Derivation of Euler’s Equation for Turbomachines
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Centrifugal Pump Description
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Performance Modeling of Centrifugal Pumps
– Pump Testing Methods
– Performance Map
– Dimensional Analysis for Pumps
– Dimensionless Ratios for Predicting Pump Performance
– Specific Speed
– Efficiency
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Velocity Diagrams for the Pump Impeller
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Calculations for the Impeller
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Interaction between Impeller and Power
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Effects of Various Changes on Power Output
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Impeller Design and Vane Layout Drawings
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Selecting Inlet and outlet Vane Angles
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Design of the Volute
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Suction Inlet Parameters
Centrifugal Pumps: Testing, Design and Analysis
PD763
Updated April 2015
1
Day Two
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Casing design
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Volute vs. diffuser designs
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Pressure and Velocity in the Diffuser
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Pump Application Theory
– Series operation
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Parallel operation
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Handling viscous liquids
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Other special applications
Criteria for Selection Pumps
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Type of head curve required
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NPSH
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Specific speed
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Pump type
Day Three
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Pump Shaft Critical Speed — Vibration issues
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Stresses in the Pump Shaft
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Sizing the Pump Shaft Diameter
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Special Design Considerations
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Sump design guidelines
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Suction design guidelines
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Other special considerations
Solving System Problems
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Pump Problems
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Process system problem
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Water system problem
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Viscous liquid pump problem
Centrifugal Pumps: Testing, Design and Analysis
PD763
Updated April 2015
2