Water vapor is heated in a closed, rigid tank from saturated vapor at 160C to a final temperature of 400C. Determine the initial and final pressures, in bar, and sketch the process on T–v and p–v diagrams.

A two-phase liquid–vapor mixture of H2O is initially at a pressure of 30 bar. If on heating at fixed volume, the critical point is attained, determine the quality at the initial state.

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Three lb of saturated water vapor, contained in a closed rigid tank whose volume is 13.3 ft3 , is heated to a final temperature of 400F. Sketch the process on a T–v diagram. Determine the pressures at the initial and final states, each in lbf/in.


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