A rigid tank of volume 10 m3 contains superheated steam at 1 MPa and 400oC. Due to heat loss to the outside atmosphere, the tank gradually cools down to the atmospheric temperature of 25oC. Determine
(a) The heat transfer.
(b) The entropy generated in the system's universe during this cooling process.
(c) Plot how the pressure changes as temperature decreases during the process (pressure vs. temperature plot).
(d) Can you explain the discontinuity in the plot?