The Rankine Cycle: Boiler

Rankine Cycle

Process 1-2:
Process 2-3:
Process 3-4:
Process 4-1:
Boiler
  • Heat added at constant pressure.
Turbine
Condenser
Pump
  • Isentropic expansion
  • Heat rejected at constant pressure.
  • Isentropic compression
1st Law: Boiler
  1. SISO, SS, Int. Rev. process
  2. ΔEkin = ΔEpot = 0
  3. No shaft work in the boiler
Assumptions:
Equation.
The boiler effluent can be superheated vapor in a

Rankine Cycle

.
When stream 2 is superheated, the quality of the turbine effluent increases and reduces the chances of damaging the turbine rotor.
Process flow diagram for a heatheat engine.
C10.
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Ch 9, Lesson B, Page 3 - The Rankine Cycle: Boiler