A steam power plant is operated as a Rankine cycle. The steam turbine receives superheated steam at 50 bar and 340°C and discharges steam at 25 bar. The turbine has a power-generation isentropic efficiency of 60%. The flowrate of steam is 20,000 kg/h. The steam leaving the turbine is fed to a condenser to produce saturated liquid at 25 bar. The condensate is pumped isentropically to a subcooled liquid at 50 bar. The pump efficiency is 75%. The subcooled liquid leaving the pump is subsequently fed to an isobaric boiler that produces superheated steam at 50 bar and 340°C and the cycle continues. The thermal efficiency of the boiler is 70%. Using the steam tables, calculate: a. The power generated by the steam turbine b. The cooling duty of the condenser c. The power to be provided to the pump d. The heat to be generated from fuel combustion in the boiler
A steam power plant is operated as a Rankine cycle. The steam turbine receives superheated steam at 50 bar and 340°C and discharges steam at 25 bar. The turbine has a power-generation isentropic efficiency of 60%. The flowrate of steam is 20,000 kg/h. The steam leaving the turbine is fed to a condenser to produce saturated liquid at 25 bar. The condensate is pumped isentropically to a subcooled liquid at 50 bar. The pump efficiency is 75%. The subcooled liquid leaving the pump is subsequently fed to an isobaric boiler that produces superheated steam at 50 bar and 340°C and the cycle continues. The thermal efficiency of the boiler is 70%. Using the steam tables, calculate: a. The power generated by the steam turbine b. The cooling duty of the condenser c. The power to be provided to the pump d. The heat to be generated from fuel combustion in the boiler
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:A steam power plant is operated as a Rankine cycle. The steam turbine receives superheated steam at
50 bar and 340°C and discharges steam at 25 bar. The turbine has a power-generation isentropic efficiency
of 60%. The flowrate of steam is 20,000 kg/h. The steam leaving the turbine is fed to a condenser to
produce saturated liquid at 25 bar. The condensate is pumped isentropically to a subcooled liquid at
50 bar. The pump efficiency is 75%. The subcooled liquid leaving the pump is subsequently fed to an
isobaric boiler that produces superheated steam at 50 bar and 340°C and the cycle continues. The thermal
efficiency of the boiler is 70%. Using the steam tables, calculate:
a. The power generated by the steam turbine
b.
The cooling duty of the condenser
C. The power to be provided to the pump
d. The heat to be generated from fuel combustion in the boiler
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