A steam power plant operates on an ideal reheat- regenerative Rankine cycle and has a net power output of 80 MW. Steam enters the high-pressure turbine at 10 MPa and 450°C and leaves at 0.8 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 450°C and is expanded in the low-pressure turbine to the condenser pressure of 10 kPa. determine (a) the mass flow rate of steam through the boiler and (b) the thermal efficiency of the cycle.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A steam power plant operates on an ideal reheat-
regenerative Rankine cycle and has a net power output of
80 MW. Steam enters the high-pressure turbine at 10 MPa
and 450°C and leaves at 0.8 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 450°C and is
expanded in the low-pressure turbine to the condenser
pressure of 10 kPa. determine (a) the mass flow rate of
steam through the boiler and (b) the thermal efficiency of
the cycle.
Transcribed Image Text:A steam power plant operates on an ideal reheat- regenerative Rankine cycle and has a net power output of 80 MW. Steam enters the high-pressure turbine at 10 MPa and 450°C and leaves at 0.8 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 450°C and is expanded in the low-pressure turbine to the condenser pressure of 10 kPa. determine (a) the mass flow rate of steam through the boiler and (b) the thermal efficiency of the cycle.
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