A piston cylinder device contains 1 kg of steam at 500C and 2 MPa. The piston device is surrounded by a water vapor mixture with a quality of x=0.6.
If the piston is allowed to expand and transfer heat to the surroundings:
a) What is the maximum amount of heat that can be transferred between the piston cylinder device and the surroundings?
b) What is the minimum amount of heat that can be transferred between the piston cylinder device and the surroundings?