urbine at 800 kPa as a saturated vapor. The stea fore entering the second-stage turbine. At the e a and 50°C. The net power output of this cycle is sa saturated liquid. You may assume the pump pressure losses in the condenser and boiler. De cycle on a T-s diagram.
urbine at 800 kPa as a saturated vapor. The stea fore entering the second-stage turbine. At the e a and 50°C. The net power output of this cycle is sa saturated liquid. You may assume the pump pressure losses in the condenser and boiler. De cycle on a T-s diagram.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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**Reheat Rankine Cycle Analysis**
In this reheat Rankine cycle, steam enters the first-stage turbine at 8 MPa and 450°C. It exits the first turbine at 800 kPa as a saturated vapor. The steam is reheated isobarically back to 450°C before entering the second-stage turbine. Upon exiting the second turbine, the steam is at 10 kPa and 50°C. The cycle produces a net power output of 20 MW, with water leaving the condenser as a saturated liquid. Assume the pump operates isentropically, and there are no pressure losses in the condenser and boiler. Determine the following:
a. Draw this cycle on a T-s (Temperature-entropy) diagram.
b. Calculate the isentropic efficiencies of the first- and second-stage turbines.
c. Determine the thermal efficiency of the cycle.
d. Calculate the mass flow rate of steam, in kg/h.
e. Find the rate of heat transfer from the water as it passes through the condenser, in MW.
---
When drawing a T-s diagram, label all relevant state points including the turbines, reheater, and condenser. This visual representation will aid in understanding the thermodynamic processes involved.
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VIEWStep 2: Draw the T-S diagram:
VIEWStep 3: Determine all the state values:
VIEWStep 4: Determine all the state values:
VIEWStep 5: Determine the isentropic efficiency of the first stage and second stage turbine:
VIEWStep 6: Determine the thermal efficiency of the cycle:
VIEWStep 7: Determine the mass flow rate of the steam:
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