Thermodynamics I - Southern Polytechnic State University
Download
Report
Transcript Thermodynamics I - Southern Polytechnic State University
Example
Crude oil pipeline
Fire protection system iterative
approach
Parallel Pipelines
Flow
Head loss
System Head Curve
Fixed head
Variable head
Pump Curve
Discharge head vs discharge rate
Shut-off head
Free discharge
Operating Point
Intersection pump and system head
curves
Available flow rate
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
Positive Displacement Pumps
Fluid Power
Elevators
Front-end loaders
Dump trucks
Fork lifts
Aircraft control
surfaces
Landing gear
Dentist drill
Mining
Solvent coating
Agriculture
Radial pump
•
•
•
•
•
Centrifugal
Chemical manufacture
Petroleum refining
Pulp & paper
Water treatment
Chillers for A/C
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