1. Machines to Convert Shaft Power to Micro Kinetic Power…….
Analysis of Pumps
P M V Subbarao
Professor
Mechanical Engineering Department
I I T Delhi
Machines to Convert Shaft Power to Micro Kinetic Power…….

2. Major equipment in A Power Plant

3. Pump services in Main Steam Cycle
Turbogenerator and auxiliaries
Condenser circulating pumps
Screen wash-water pumps
Cooling tower make-up pumps
Steam generator equipment
Condensate pumps
Condensate booster pumps
Boiler-feed pumps
Boiler-feed booster pumps
Deaerator make-up pumps
Heater drain pumps (low and high pressure)

4. Layout of Turbo-Generator Cycle

5. Expectations from A Condensate Pump
Duty: Generate Required Open Feed water Heater Conditions !
Condensate Pump
Hot Well
Rhyd,1
Rhyd,2
Rhyd,n
pOFWH+ploss
OFWH

6. Expectations from A Boiler Feed Pump
To Generate Required Live Steam Conditions !
plive steam
Steam Turbine
Rhyd,1
Rhyd,SG
Rhyd,n
ploss+plive water
BF Pump
OFWH / DA

7. Cross-section, single 48.5 MW boiler feed pump, 1300 MW fossil power plant

8. Power Losses in Pump
Head losses due to suction and delivery pipe fittings, entrance losses, impeller frictional losses and casing frictional losses.
Power loss due Leakages and recirculating fluid.
Disc Friction loss
Mechanical Losses

9. Machine-Fluid Matching Parameter
Design Parameter

10. SELECTION OF SPEED
A pump/fan with a given flow geometry and momentum transfer principle

11. Selection of Geometry Vs Specific Speed

12. Specific Speed Vs Flow Geometry& Principle of Momentum Transfer
Mixed
Axial Flow /
Airfoil Action
Radial Fow/ Centrifugal Action

13. Specific Speed Vs Pump Losses

14. Specific Speed Vs Total Power Loss

15. Anatomy of A Centrifugal Pump/Fan : Low Ns
Discharge Nozzle - K
Impeller - J
Shaft - C
Eye of Impeller - G
Casing - F

16. Basic Structure of Centrifugal Pump/Fan

17. High Flow Rates : Pumps in Parallel

18. Axial Flow Pump Stage

19. Multi-stage Pumps

20. Layout of A General Pump

21. Basic Erection of A Pump
STATIC
SUCTION
HEAD

22. Water Flow Path in A Pump
                                                                        

23. Variation of Absolute Pressure inside A Pump
pabsolute
Flow Path

25. NPSH
NPSH

26. Loss of NPSH

27. Available NPSH At Site Kinetic power mVs2/2
Frictional loss in suction piping

28. Specific Speed Vs Suction Velocity