1. The ideal Rankine cycle is shown below in schematic form and on a T-s diagram. The turbine power output of this cycle is 2 MW. Saturated liquid at 20 kPa leaves the condenser, and the vapor at the turbine exhaust has a quality of 95 percent. The boiler pressure is 1.4 MPa. Determine the mass flow rate of steam, the heat-transfer rate in the boiler, and the thermal efficiency of the cycle. 3

1. The ideal Rankine cycle is shown below in schematic form and on a T-s diagram. The turbine power output of this cycle is 2 MW. Saturated liquid at 20 kPa leaves the condenser, and the vapor at the turbine exhaust has a quality of 95 percent. The boiler pressure is 1.4 MPa. Determine the mass flow rate of steam, the heat-transfer rate in the boiler, and the thermal efficiency of the cycle. 3

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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Consider an ideal Rankine cycle with reheating as shown. Steam enters a high-pressure turbine at 6 MPa and 440°C and expands to 0.5 MPa then reheated to 400°C. The condenser pressure is 8 kPa. • Calculate the quality at the exit of the low-pressure turbine, x6 = • Calculate the work produced by the low-pressure turbine in kJ/kg • Calculate the heat transfer in reheating (greheat) in kJ/kg = Boiler Turbine 3 QH 5 Condenser 87.3% || 89.0%||| 91.1% | 94.3% || 95.9% || 99.0% 763 |805 || 832 || 851878 || 901 513 556| 581 665 | 697|| 758
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