A rigid, insulated vessel contains superheated vapor steam at 3 MPa, 400◦C. A valve on the vessel is opened, allowing steam to escape, as shown in Fig. P6.57. The overall process is irreversible, but the steam remaining inside the vessel goes through a reversible adiabatic expansion. Determine the fraction of steam that has escaped when the final state inside is saturated vapor.

Transcribed Image Text:

FIGURE P6.57