Thermodynamics%20I

1
(No Transcript)
2
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.

3
Moving gases

• Fans
• Blowers
• Compressors

4
Moving liquids

• Pump
• Positive displacement
• Kinetic/dynamic centrifugal pump

5
(No Transcript)
6
PD pump

• High discharge pressure PRV needed
• High viscosity
• Shear sensitive
• Relatively low volume flow
• Self- priming

7
Fluid Power

• Elevators
• Front-end loaders
• Dump trucks
• Fork lifts
• Aircraft control surfaces
• Landing gear
• Dentist drill

• Mining
• Solvent coating
• Agriculture

8
Positive Displacement Pumps
9
(No Transcript)
10
Positive displacement

• Rotary piston
• Swash plate

11
Fluid Power

• Mechanical efficiency
• Volumetric efficiency
• Conversion factors

12
(No Transcript)
13
Radial pump

• Centrifugal
• Chemical manufacture
• Petroleum refining
• Pulp paper
• Water treatment
• Chillers for A/C

14
(No Transcript)
15
(No Transcript)
16
(No Transcript)
17
Pump Curve

• Discharge head vs discharge rate
• Shut-off head
• Free discharge

18
System Head Curve

• Fixed head
• Variable head

19
(No Transcript)
20
Operating Point

• Intersection pump and system head curves
• Available flow rate

21
(No Transcript)
22
(No Transcript)
23
(No Transcript)
24
(No Transcript)
25
(No Transcript)
26
(No Transcript)
27
(No Transcript)
28
(No Transcript)
29
(No Transcript)
30
(No Transcript)
31
(No Transcript)
32
Assignment

• Chapter 13

33
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