Steam is the working fluid in an ideal Rankine cycle with superheat and reheat. Steam enters the first-stage turbine at 8.0 MPa, 480°C, and expands to 0.7 MPa. It is then reheated to 440°C before entering the second-stage turbine, where it expands to the condenser pressure of 0.008 MPa. The net power output is 100 MW. Determine (i) the thermal efficiency of the cycle, (ii)the mass flow rate of steam, in kg/h, (iii) the rate of heat transfer from the condensing steam as it passes through the condenser, in MW.
Steam is the working fluid in an ideal Rankine cycle with superheat and reheat. Steam enters the first-stage turbine at 8.0 MPa, 480°C, and expands to 0.7 MPa. It is then reheated to 440°C before entering the second-stage turbine, where it expands to the condenser pressure of 0.008 MPa. The net power output is 100 MW. Determine (i) the thermal efficiency of the cycle, (ii)the mass flow rate of steam, in kg/h, (iii) the rate of heat transfer from the condensing steam as it passes through the condenser, in MW.
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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Steam is the working fluid in an ideal Rankine cycle with superheat and reheat. Steam enters
the first-stage turbine at 8.0 MPa, 480°C, and expands to 0.7 MPa. It is then reheated to 440°C
before entering the second-stage turbine, where it expands to the condenser pressure of 0.008
MPa. The net power output is 100 MW.
Determine
(i) the thermal efficiency of the cycle,
(ii)the mass flow rate of steam, in kg/h,
(iii) the rate of heat transfer from the condensing steam as
it passes through the condenser, in MW.
Transcribed Image Text:Steam
generator
T₁ = 480°C
P₁-8.0 MPa
2-0.7 MPa
Pa'
Turbine 1
T₂-440°C
Pend-0.008 MPa
Pump
-Turbine 2
Condenser
Saturated liquid
8.0 MPa
0.7 MPa 2
0.008 MPa
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