Q1. Steam at 2 MPa and 600°C enters adiabatic turbine and undergoes irreversible ex to a saturated vapor condition at 0.01 MPa. The steam flowrate is 20 kg/min. a) Write the general entropy balance and explain how you come up with the final entropy balance for the turbine. b) What is the entropy generation (kJ/s.K) for this process? Is this process possible to occur? State your reason. What is the outlet temperature (°C) and enthalpy (kJ/kg)? c) d) Calculate the turbine work in kW. e) Explain whether the work produced in part (d) is an actual or ideal work. f) Draw this process on a T-s diagram.
Q1. Steam at 2 MPa and 600°C enters adiabatic turbine and undergoes irreversible ex to a saturated vapor condition at 0.01 MPa. The steam flowrate is 20 kg/min. a) Write the general entropy balance and explain how you come up with the final entropy balance for the turbine. b) What is the entropy generation (kJ/s.K) for this process? Is this process possible to occur? State your reason. What is the outlet temperature (°C) and enthalpy (kJ/kg)? c) d) Calculate the turbine work in kW. e) Explain whether the work produced in part (d) is an actual or ideal work. f) Draw this process on a T-s diagram.
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:Q1. Steam at 2 MPa and 600°C enters adiabatic turbine and undergoes irreversible expansion
to a saturated vapor condition at 0.01 MPa. The steam flowrate is 20 kg/min.
a)
Write the general entropy balance and explain how you come up with the final entropy
balance for the turbine.
b)
What is the entropy generation (kJ/s.K) for this process? Is this process possible to
occur? State your reason.
c) What is the outlet temperature (°C) and enthalpy (kJ/kg)?
d) Calculate the turbine work in kW.
e) Explain whether the work produced in part (d) is an actual or ideal work.
f) Draw this process on a T-s diagram.
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