This question requires the use of the Thermodynamic Property Tables supplied as additional material. In addition, for steam, the specific ideal gas constant = 461.5 J/kg K A closed system is comprised of pure water substance initially at a temperature of 500 C and a pressure of 20 MPa (state 1).

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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This question requires the use of the Thermodynamic Property Tables supplied as additional material.

In addition, for steam, the specific ideal gas constant = 461.5 J/kg K

A closed system is comprised of pure water substance initially at a temperature of 500 C and a pressure of 20 MPa (state 1).

The system undergoes an isochoric process whereby its pressure drops to 0.1 Mpa (state 2).

(a) Evaluate the specific entropy and specific volume of the system at state 1.

(b) Evaluate the specific entropy, specific volume and temperature of the system at state 2.

(c) Sketch the process on a Temperature-specific entropy plot, showing the lines of constant pressure which pass through steps 1 and 2.

(d) For state 1 evaluate the specific volume assuming the steam behaves as an ideal gas and comment on your result.

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