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Turbomachinery
Rotating element connected to a shaft Turbine: device to extract energy from
fluid stream. Pressure decrease. Pump, fan, compressor: devices to add
energy to fluid stream. Pressure increase.
Steady state: rotational speed of rotor does not vary.
Moving gases
Fans Blowers Compressors
Moving liquids
Pump• Positive displacement• Kinetic/dynamic – centrifugal pump
PD pump
High discharge pressure : PRV needed High viscosity Shear sensitive Relatively low volume flow Self- priming
Fluid Power
Elevators Front-end loaders Dump trucks Fork lifts Aircraft control
surfaces Landing gear Dentist drill
Mining Solvent coating Agriculture
Positive Displacement Pumps
Positive displacement
Rotary piston Swash plate
Fluid Power
Mechanical efficiency Volumetric efficiency Conversion factors
Radial pump
Centrifugal • Chemical manufacture• Petroleum refining• Pulp & paper• Water treatment• Chillers for A/C
Pump Curve
Discharge head vs discharge rate Shut-off head Free discharge
System Head Curve Fixed head Variable head
Operating Point
Intersection pump and system head curves
Available flow rate
Assignment
Chapter 13
References
Images & examples• Mechanics of Fluids, 3rd Edition, Potter & Wiggert,
Brooks & Cole• Applied Fluid Mechanics, 6th Edition, Mott, Prentice Hall• Engineering Fluid Mechanics, 5th Edition Crowe, &
Roberson, Wiley• Fluid Mechanics Cengel & Cimbala McGraw Hill
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