A piston-cylinder device initially contains 0.6 m3 of water vapor at 250 kPa. The specific volume and specific internal energy of water vapor at the initial condition are 0.72 m3/kg and 2537 kJ/kg, respectively. At this condition, the piston is resting on a set of stops and the mass of piston is such that a pressure of 300 kPa is required to move it. Heat transfer is allowed to occur slowly so that the water vapor volume doubles. The specific internal energy at the final condition is 3410 kJ/kg.
(a) Show the entire process on a P-V diagram.
(b) What is the work done (kJ) during the process?
(c) Determine the total amount of heat transfer (kJ) during the process.