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Hydraulic turbines
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Hydraulic turbines

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Transcript

  • 1. 09ME93 Yasir Hashmi QUEST Nawabshah
  • 2. HYDRAULIC TURBINES :• Designed to work under a condition that head ofwater should be above a certain minimum level.• Without a certain minimum level of water in thedam a turbine cannot be run.
  • 3. ADVANTAGES :• Simple construction• Easily controllable• Efficient• Ability to work at peak load or stand by plant
  • 4. CLASSIFICATION :a. Based on action of water on moving blades:1. Impulse turbines2. Reaction turbinesb. Direction of flow of water:1. Tangential flow turbine2. Radial flow turbine3. Axial flow turbine4. Mixed flow turbine
  • 5. c. Position of shaft:1. Vertical shaft turbines2. Horizontal shaft turbinesd. Head of water:1. High head turbines2. Medium head turbines3. Low head turbinese. Based on speed:f. Based on specific speed:
  • 6. IMPULSE TURBINES:• Wheel passages are not completely filled with water.• Water acts on buckets at atmospheric pressure.• Water is supplied on few points at the periphery ofwheel.• How does it works?
  • 7. REACTION TURBINES:• Water passages are completely filled with water.• Water acting on vanes is under pressure greaterthan atmospheric.• Water enters all round the periphery of wheel.• How does it works?
  • 8. THANKS