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SSSF Analysis of Devices Used in Power Generation - II

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Presentation on theme: "SSSF Analysis of Devices Used in Power Generation - II"— Presentation transcript:

1 SSSF Analysis of Devices Used in Power Generation - II
P M V Subbarao Professor Mechanical Engineering Department Sources of Work for Manufacturing Industry …..

2 Schematic of Rankine & Brayton cycles

3 Pump : Adiabatic Process
1 2 SSSF: Conservation of mass First Law : Liquids are incompressible, change in volume per unit change in Pressure is negligible.

4 Pumping of Incompressible Fluids
Adiabatic pumping of a liquid is almost an Isothermal process!!

5 Enthalpy Diagrams

6 2 – 3 : Steam Generation : Isobaric Heating
QCV No work transfer, change in kinetic and potential energies are negligible

7 Oil Fired Steam Boiler

8 Enthalpy Diagrams

9 The Turbine : Creator of Mechanical Torque & POwer
Stator Rotor

10 U Vr1 Va1 Inlet Velocity Triangle Va1 Vr1 U Exit Velocity Triangle U Vr2 Va2 Vr2 Kinematics of Flow Past A Rotor Blade

11 Axial Turbine Stator Exit/Rotor Inlet Velocity Triangle
Va1 Va1 Vw1 Vr1 a1 a1 Vw1 b1 Vf1 Vf1 Va0 Vf0

12 U Va2 a2 Vr2 b2 a1 Vr1 b1 Va1 Va1: Inlet Absolute Velocity Vr1: Inlet Relative Velocity Vr2: Exit Relative Velocity Va2:Exit Absolute Velocity a1: Inlet Nozzle Angle. b1: Inlet Blade Angle. b2: Exit Blade Angle. a2: inlet Nozzle Angle (next stage).

13 Turbine : Adiabatic Process
3 4 T No heat transfer. Change in kinetic and potential energies are negligible Assuming a single fluid entering and leaving…

14 Diagram of Large Power Plant Turbine

15 HP Turbine Rotor

16 LP Turbine Rotor

17 Highly compressible flow through Turbine

18 Steam Power Plant: A series of CVs in SSSF

19 4 – 1 : Condenser : Isobaric Cooling : p4 = p1
QCV 4 1 No work transfer, change in kinetic and potential energies are negligible Assuming a single fluid entering and leaving…

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22 Schematic for Power Plant with cooling Water from A River


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