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Analysis of Pumps

Analysis of Pumps. P M V Subbarao Professor Mechanical Engineering Department I I T Delhi. Machines to Convert Shaft Power to Micro Kinetic Power……. Major equipment in A Power Plant. Pump services in Main Steam Cycle. Turbogenerator and auxiliaries Condenser circulating pumps

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Analysis of Pumps

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

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

  24. NPSH NPSH

  25. Loss of NPSH

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

  27. Specific Speed Vs Suction Velocity Suction Velocity:

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