Consider a reheat Rankine cycle with a net power output of 100 MW. Steam enters the high pressure turbine at 10 MPa and 500°C and the low pressure turbine at 1 MPa and 500°C. The steam leaves the condenser at 10 kPa. The isentropic efficiencies of turbine and pump are 80% and 95%, respectively. Part 1 1. Show the cycle on a T-S diagram with respect to saturation lines. 2. Determine the mass flow rate of steam. 3. Determine the thermal efficiency for this cycle.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Task (1)
Consider a reheat Rankine cycle with a net power output of 100 MW. Steam enters the high pressure
turbine at 10 MPa and 500°C and the low pressure turbine at 1 MPa and 500°C. The steam leaves
the condenser at 10 kPa. The isentropic efficiencies of turbine and pump are 80% and 95%,
respectively.
Part 1
1. Show the cycle on a T-S diagram with respect to saturation lines.
2. Determine the mass flow rate of steam.
3. Determine the thermal efficiency for this cycle.
4. Determine the thermal efficiency for the equivalent Carnot cycle and compare it with the
Rankine cycle efficiency.
5. Now assume that both compression and expansion processes in the pump and turbine are
isentropic. Calculate the thermal efficiency of the ideal cycle.
Transcribed Image Text:Task (1) Consider a reheat Rankine cycle with a net power output of 100 MW. Steam enters the high pressure turbine at 10 MPa and 500°C and the low pressure turbine at 1 MPa and 500°C. The steam leaves the condenser at 10 kPa. The isentropic efficiencies of turbine and pump are 80% and 95%, respectively. Part 1 1. Show the cycle on a T-S diagram with respect to saturation lines. 2. Determine the mass flow rate of steam. 3. Determine the thermal efficiency for this cycle. 4. Determine the thermal efficiency for the equivalent Carnot cycle and compare it with the Rankine cycle efficiency. 5. Now assume that both compression and expansion processes in the pump and turbine are isentropic. Calculate the thermal efficiency of the ideal cycle.
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