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Applying the Entropy Balance: Closed Systems Five kg of
Chapter 6, Problem 39P(choose chapter or problem)
Five kg of water contained in a piston–cylinder assembly expand from an initial state where \(T_{1}=400^{\circ} \mathrm{C}, \ p_{1}=700\) kPa to a final state where \(T_{2}=200^{\circ} \mathrm{C}, \ p_{2}=300\) kPa, with no significant effects of kinetic and potential energy. The accompanying table provides additional data at the two states. It is claimed that the water undergoes an adiabatic process between these states, while developing work. Evaluate this claim.
Questions & Answers
QUESTION:
Five kg of water contained in a piston–cylinder assembly expand from an initial state where \(T_{1}=400^{\circ} \mathrm{C}, \ p_{1}=700\) kPa to a final state where \(T_{2}=200^{\circ} \mathrm{C}, \ p_{2}=300\) kPa, with no significant effects of kinetic and potential energy. The accompanying table provides additional data at the two states. It is claimed that the water undergoes an adiabatic process between these states, while developing work. Evaluate this claim.
ANSWER:
Solution 39P
Step 1 of 3
A 5 kg of water is contained in a piston cylinder, from the given table it is claimed that the water undergoes an adiabatic process between the initial and the final states, so for this we need to evaluate the claim.