The net work output and the thermal efficiency for the Carnot and the simple ideal Rankine cycles with steam as the working fluid are to be calculated and compared. Steam enters the turbine in both cases at 10 MPa as a saturated vapor, and the condenser pressure is 20 kPa. In the Rankine cycle, the condenser exit state is saturated liquid and in the Carnot cycle, the boiler inlet state is saturated liquid. Draw the T-s diagrams for both cycles.
Answers
Given:-
Boiler inlet stage is saturated liquid in carnot cycle and condenser exit stage is saturated liquid.
To draw:-
T-S diagram of carnot and rankine cycle.
Explanation:-
In case of rankine cycle, process 3-4 is an isobaric heat rejection process which occurs in condenser and condenser exit i.e., point 4 is at saturated liquid line.
In case of carnot cycle, process 1-2 is an isothermal heat addition process occurs in the boiler and boiler inlet i.e., point 1 is at saturated liquid line.
Answer:
Step-by-step explanation:
Determine the net work output and the thermal efficiency for the Carnot cycle with steam as the working fluid. Steam enters the turbine in both cases at 10 MPa as a saturated vapor, and the condenser pressure is 20 kPa. In the Carnot cycle, the boiler inlet state is saturated liquid. Draw the T-s diagrams for this cycle.
Answers: 565.4 kJ/kg , 43%