A piston-cylinder device initially contains steam at 3.5 MP, soperheated by 5 Nows
heat to the surroundings and the piston moves down hitting a set of stops at which point the
cylinder contains saturated liquid water. The cooling continues until the cylinder contains water at
200 °C: Determine
(1) The initial temperature
(i) the enthalpy change per unit mass of the steam by the tune the piston first hits
Stops and
(i) the final pressure and the quality of mixture)
the
W
