A thermally insulated piston-cylinder device contains 0.8 m³ of water vapor at 600 kPa and 200°C. The steam is compressed to 2 MPa and 500°C. a) Calculate the work done on the steam in this process in kJ. b) How much entropy is generated in this process in kJ/K? c) Calculate the isentropic efficiency of the process when the pressure at the end is 2 MPa. d) Draw a T-s diagram where you show both the actual and the isentropic process curves relative to the saturation curve. Also, draw the isobars that pass through the states at the beginning and end of both the actual and the corresponding isentropic process.

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A thermally insulated piston-cylinder device contains 0.8 m³ of water vapor at 600 kPa and 200°C. The steam is compressed to 2 MPa and 500°C.

a) Calculate the work done on the steam in this process in kJ.

b) How much entropy is generated in this process in kJ/K?

c) Calculate the isentropic efficiency of the process when the pressure at the end is 2 MPa.

d) Draw a T-s diagram where you show both the actual and the isentropic process curves relative to the saturation curve. Also, draw the isobars that pass through the states at the beginning and end of both the actual and the corresponding isentropic process.

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