2. A steam power plant operates on an ideal reheat-regenerative Rankine cycle and has a net power output of Wnet (MW). Steam enters the high-pressure turbine at Ps (MPa) and T; (°C) and leaves at Pô (MPa). Steam is then reheated to T7 (°C) and is expanded in the intermediate-pressure turbine to the pressure of Pg (MPa). Some steam is extracted at this pressure to heat the feedwater in an open feedwater heater. The rest of the steam is reheated to Tg (°C) and is expanded in the low-pressure turbine to the condenser pressure of Po (kPa). Show the cycle on a T-s diagram with respect to saturation lines, and determine the mass flow rate of steam through the boiler and the thermal efficiency of the cycle.

2. A steam power plant operates on an ideal reheat-regenerative Rankine cycle and has a net power output of Wnet (MW). Steam enters the high-pressure turbine at Ps (MPa) and T; (°C) and leaves at Pô (MPa). Steam is then reheated to T7 (°C) and is expanded in the intermediate-pressure turbine to the pressure of Pg (MPa). Some steam is extracted at this pressure to heat the feedwater in an open feedwater heater. The rest of the steam is reheated to Tg (°C) and is expanded in the low-pressure turbine to the condenser pressure of Po (kPa). Show the cycle on a T-s diagram with respect to saturation lines, and determine the mass flow rate of steam through the boiler and the thermal efficiency of the cycle.

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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Question

W net
P3
T5
P.
T7
Pg
T,
P10
160
12.5
600
3.5
550
0.45
550
10

2. A steam power plant operates on an ideal reheat-regenerative Rankine cycle and has a net power output of Wnet (MW).
Steam enters the high-pressure turbine at P3 (MPa) and T; (°C) and leaves at P6 (MPa). Steam is then reheated to
T7 (°C) and is expanded in the intermediate-pressure turbine to the pressure of Pg (MPa). Some steam is extracted
at this pressure to heat the feedwater in an open feedwater heater. The rest of the steam is reheated to T9 (°C) and
is expanded in the low-pressure turbine to the condenser pressure of P10 (kPa). Show the cycle on a T-s diagram with
respect to saturation lines, and determine the mass flow rate of steam through the boiler and the thermal efficiency of
the cycle.
High-pressure
Intermediate-pressure
Low-pressure
turbine
turbine
turbine
10
Open FWH
Boiler
4
3
Pump B
Pump A
MMMM
Condenser

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