Irreversibilities in a Real Boiler

Rankine Cycle

Heat added at constant pressure.
Process 1-2:
Isentropic expansion.
Process 2-3:
Heat rejected at constant pressure.
Process 3-4:
Isentropic compression.
Process 4-1:
Additional Sources of

Irreversibility :

  • Heat losses to the surroundings.
  • Frictional losses as the fluid moves through the boiler.
Process flow diagram of a Rankine Cycle with the boiler highlighted.
TS Diagram of a Rankine Cycle with a real boiler in which pressure drop due to fluid friction occurs.
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Ch 9, Lesson D, Page 2 - Irreversibilities in a Real Boiler