(A)
Interpretation:
The temperature of the nitrogen leaving the valve.
(B)
Interpretation:
The physical state of the nitrogen leaving the valve.
Concept Introduction:
Write the expression to calculate the specific enthalpy of the mixture.
Here, the physical state of the nitrogen leaving the valve is q, specific enthalpy of liquid and vapor are
(C)
Interpretation:
The entropy is generated in the valve.
Concept Introduction:
Write the entropy balance for an adiabatic, steady state process.
Here, mass flow rate for inlet and exit state are
(D)
Interpretation:
Irreversible features for this process.
(E)
Interpretation:
The physical state of the methane leaving the valve, quality, and the entropy is generated in the valve.
Concept Introduction:
The entropy balance for an adiabatic, steady state process.
Here, mass flow rate for inlet and exit state are
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