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Question 1: Superheated steam enters a turbine at 7 MPa, 550°C, and exits at 150kPa. a) Draw the system. b) If the process is reversible adiabatic (isentropic), find the final temperature (T2s), the final enthalpy (h2s) of the steam, and do the energy balance to calculate the turbine work (Ws). c) Using entropy balance, show that Sgen for the above process is 0. d) If the isentropic efficiency is 85%, find the actual final temperature (T2a) and calculate Sgen? e) Plot process (b) and (d) on a Ts diagram with proper labelling.

Question 1: Superheated steam enters a turbine at 7 MPa, 550°C, and exits at 150kPa. a) Draw the system. b) If the process is reversible adiabatic (isentropic), find the final temperature (T2s), the final enthalpy (h2s) of the steam, and do the energy balance to calculate the turbine work (Ws). c) Using entropy balance, show that Sgen for the above process is 0. d) If the isentropic efficiency is 85%, find the actual final temperature (T2a) and calculate Sgen? e) Plot process (b) and (d) on a Ts diagram with proper labelling.

Elements Of Electromagnetics
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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a b c d e

Question 1: Superheated steam enters a turbine at 7 MPa, 550°C, and exits at 150kPa. a) Draw the system. b) If the process is reversible adiabatic (isentropic), find the final temperature (T2s), the final enthalpy (h2s) of the steam, and do the energy balance to calculate the turbine work (Wt,s). c) Using entropy balance, show that Sgen for the above process is 0. d) If the isentropic efficiency is 85%, find the actual final temperature (T2a) and calculate Sgen? e) Plot process (b) and (d) on a Ts diagram with proper labelling.
Transcribed Image Text:Question 1: Superheated steam enters a turbine at 7 MPa, 550°C, and exits at 150kPa. a) Draw the system. b) If the process is reversible adiabatic (isentropic), find the final temperature (T2s), the final enthalpy (h2s) of the steam, and do the energy balance to calculate the turbine work (Wt,s). c) Using entropy balance, show that Sgen for the above process is 0. d) If the isentropic efficiency is 85%, find the actual final temperature (T2a) and calculate Sgen? e) Plot process (b) and (d) on a Ts diagram with proper labelling.
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