Water is the working fluid in a Rankine cycle. Steam enters the turbine at 10 MPa and 550°C. The condenser pressure is 20 kPa. Both the turbine and pump have isentropic efficiencies of 85%. The net power output of the cycle is 20 MW. Cooling water experiences a temperature increase from 16°C to 24°C. Determine for the cycle: a. the mass flow rate of steam, in kg/s. b. the rate of heat transfer, in kW, to the working fluid passing through the steam generator. c. the thermal efficiency.
Water is the working fluid in a Rankine cycle. Steam enters the turbine at 10 MPa and 550°C. The condenser pressure is 20 kPa. Both the turbine and pump have isentropic efficiencies of 85%. The net power output of the cycle is 20 MW. Cooling water experiences a temperature increase from 16°C to 24°C. Determine for the cycle: a. the mass flow rate of steam, in kg/s. b. the rate of heat transfer, in kW, to the working fluid passing through the steam generator. c. the thermal efficiency.
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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Water is the working fluid in a Rankine cycle. Steam enters the turbine at 10 MPa and 550°C. The
condenser pressure is 20 kPa. Both the turbine and pump have isentropic efficiencies of 85%. The
net power output of the cycle is 20 MW. Cooling water experiences a temperature increase from
16°C to 24°C. Determine for the cycle:
a. the mass flow rate of steam, in kg/s.
b. the rate of heat transfer, in kW, to the working fluid passing through the steam generator.
c. the thermal efficiency.
d. the mass flow rate of cooling water, in kg/s.
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