Q4: Consider a steam power plant that operates on an ideal reheat- regenerative Rankine cycle with one open feedwater heater, one closed feedwater heater, and one reheater. Steam enters the turbine at 15 MPa and 600°C and is condensed in the condenser at a pressure of 10 kPa. Some steam is extracted from the turbine at 4 MPa for the closed feedwater heater, and the remaining steam is reheated at the same pressure to 600°C. The extracted steam is completely condensed in the heater and is pumped to 15 MPa before it mixes with the feedwater at the same pressure. Steam for the open feedwater heater is extracted from the low-pressure turbine at a pressure of 0.5 MPa. Determine the fractions of steam extracted from the turbine as well as the thermal efficiency of the сycle. I kg T 15 MPa 600 C 9 11 High-P turbine Low-P turbine Boiler Reheater 10 kg 15 MPa P10 =P1 = 4 MPa 600°C 4 MPa 10 1-y -z (12 13 1-y 9. 1-y 4 MPa 0.5 MPa 10 kPa Closed 0.5 MPa 12 Open FWH FWH 1-y-z Mixing chamber 10 kPa 13 Condenser Pump III Pump II Pump I

Q4: Consider a steam power plant that operates on an ideal reheat- regenerative Rankine cycle with one open feedwater heater, one closed feedwater heater, and one reheater. Steam enters the turbine at 15 MPa and 600°C and is condensed in the condenser at a pressure of 10 kPa. Some steam is extracted from the turbine at 4 MPa for the closed feedwater heater, and the remaining steam is reheated at the same pressure to 600°C. The extracted steam is completely condensed in the heater and is pumped to 15 MPa before it mixes with the feedwater at the same pressure. Steam for the open feedwater heater is extracted from the low-pressure turbine at a pressure of 0.5 MPa. Determine the fractions of steam extracted from the turbine as well as the thermal efficiency of the сycle. I kg T 15 MPa 600 C 9 11 High-P turbine Low-P turbine Boiler Reheater 10 kg 15 MPa P10 =P1 = 4 MPa 600°C 4 MPa 10 1-y -z (12 13 1-y 9. 1-y 4 MPa 0.5 MPa 10 kPa Closed 0.5 MPa 12 Open FWH FWH 1-y-z Mixing chamber 10 kPa 13 Condenser Pump III Pump II Pump I

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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