Water undergoes two processes in series: • 1 to 2: isentropic (internally reversible and adiabatic) compression from 0.1 MPa and the phase of water is “saturated vapor” to 0.5 MPa • 2 to 3: a reversible isothermal process to 1.5 MPa a) Draw the overall process on a T-s diagram. Clearly indicate all states and the values of the relevant intensive properties on your diagram. b) Is process 2 to 3 a compression, expansion, or isochoric process? How do you know? c) Determine the overall specific work (w13) and specific heat transfer (q13) for this complete process. (Hint: recall that Q int rev =∫ T ds2 1 for an internally reversible process between states 1 and 2.)

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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Water undergoes two processes in series:

• 1 to 2: isentropic (internally reversible and adiabatic) compression from 0.1 MPa and
the phase of water is “saturated vapor” to 0.5 MPa
• 2 to 3: a reversible isothermal process to 1.5 MPa

a) Draw the overall process on a T-s diagram. Clearly indicate all states and the values of
the relevant intensive properties on your diagram.
b) Is process 2 to 3 a compression, expansion, or isochoric process? How do you know?
c) Determine the overall specific work (w13) and specific heat transfer (q13) for this
complete process. (Hint: recall that Q int rev =∫ T ds2
1 for an internally reversible process
between states 1 and 2.)

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