A steam power plant operates on a regenerative Rankine cycle with two open feedwater heaters. Steam enters the turbine at 10 MPa and 600°C and exhausts to the condenser at 5 kPa. Steam is extracted from the turbine at 0.6 and 0.2 MPa. Water leaves both feedwater heaters as a saturated liquid. The mass flow rate of steam through the boiler is 22 kg/s. Calculate (a) the amount of bled steam used for feedwater heating at each extraction points, in kg/hr, (b) the net power output of the power plant, in MW, (c) the plant thermal efficiency, and (d) the amount of fuel oil needed for 30 days continuous operation in gallons. Take fuel oil's heating value as 44 MJ/kg with a specific gravity of 0.90 and assume a boiler efficiency of 87%.

A steam power plant operates on a regenerative Rankine cycle with two open feedwater heaters. Steam enters the turbine at 10 MPa and 600°C and exhausts to the condenser at 5 kPa. Steam is extracted from the turbine at 0.6 and 0.2 MPa. Water leaves both feedwater heaters as a saturated liquid. The mass flow rate of steam through the boiler is 22 kg/s. Calculate (a) the amount of bled steam used for feedwater heating at each extraction points, in kg/hr, (b) the net power output of the power plant, in MW, (c) the plant thermal efficiency, and (d) the amount of fuel oil needed for 30 days continuous operation in gallons. Take fuel oil's heating value as 44 MJ/kg with a specific gravity of 0.90 and assume a boiler efficiency of 87%.

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

ANALYSIS
OF REGENERATIVE
RANKINE CYCLE
3. A steam power plant operates on a regenerative Rankine cycle with two open feedwater heaters.
Steam enters the turbine at 10 MPa and 600°C and exhausts to the condenser at 5 kPa. Steam is
extracted from the turbine at 0.6 and 0.2 MPa. Water leaves both feedwater heaters as a saturated
liquid. The mass flow rate of steam through the boiler is 22 kg/s. Calculate (a) the amount of bled
steam used for feedwater heating at each extraction points, in kg/hr, (b) the net power output of the
power plant, in MW, (c) the plant thermal efficiency, and (d) the amount of fuel oil needed for 30 days
continuous operation in gallons. Take fuel oil's heating value as 44 MJ/kg with a specific gravity of
0.90 and assume a boiler efficiency of 87%.

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