Steam enters a turbine with a pressure of 20 bar, a temperature of 300 ℃, and a velocity of 200m/s. Saturated vapor at 100℃ exits with a velocity of 100m/s. At steady state, the turbine develops work equal to 500 kJ/kg of steam flowing through the turbine. Heat transfer between the turbine and its surroundings occurs at an average outer surface temperature of 360 K. Determine the rate at which entropy is produced within the turbine per kg of steam flowing, in kJ/kg · K. Neglect the change in potential energy between inlet and exit.
Steam enters a turbine with a pressure of 20 bar, a temperature of 300 ℃, and a velocity of 200m/s. Saturated vapor at 100℃ exits with a velocity of 100m/s. At steady state, the turbine develops work equal to 500 kJ/kg of steam flowing through the turbine. Heat transfer between the turbine and its surroundings occurs at an average outer surface temperature of 360 K. Determine the rate at which entropy is produced within the turbine per kg of steam flowing, in kJ/kg · K. Neglect the change in potential energy between inlet and exit.
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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Steam enters a turbine with a pressure of 20 bar, a temperature of 300 ℃, and a velocity of 200m/s. Saturated vapor at 100℃ exits with a velocity of 100m/s. At steady state, the turbine develops work equal to 500 kJ/kg of steam flowing through the turbine. Heat transfer between the turbine and its surroundings occurs at an average outer surface temperature of 360 K. Determine the rate at which entropy is produced within the turbine per kg of steam flowing, in kJ/kg · K. Neglect the change in potential energy between inlet and exit.
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