!\ Required information\ Problem 03.067 - A piston-cylinder device contains steam\ A piston-cylinder device initially contains steam at

3.5MPa

, superheated by

5\\\\deg C

. Now, steam loses 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

200.0\\\\deg C

. Use data from the steam tables.\ Problem 03.067.b - Enthalpy change in superheated steam\ Determine the enthalpy change per unit mass of the steam by the time the piston first hits the stops.\ The enthalpy change is

k(J)/(k)g

.

Required information Problem 03.067 - A piston-cylinder device contains steam A piston-cylinder device initially contains steam at 3.5MPa, superheated by 5C. Now, steam loses 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 200.0C. Use data from the steam tables. Problem 03.067.b - Enthalpy change in superheated steam Determine the enthalpy change per unit mass of the steam by the time the piston first hits the stops. The enthalpy change is kJ/kg