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Comprehensive Analysis of Pumps in Power Plants

Explore the role of pumps in power plants, including major equipment, expectations, losses, matching parameters, and anatomy of centrifugal pumps. Learn about the layout, static head, NPSH, and more. Study the selection process for pump design and speed optimization.

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Comprehensive Analysis of Pumps in Power Plants

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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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