A piston€“cylinder device initially contains 0.6 kg of steam with a volume of 0.1 m3. The mass of the piston is such that it maintains a constant pressure of 800 kPa. The cylinder is connected through a valve to a supply line that carries steam at 5 MPa and 500°C. Now the valve is opened and steam is allowed to flow slowly into the cylinder until the volume of the cylinder doubles and the temperature in the cylinder reaches 250°C, at which point the valve is closed. Determine
(a) The mass of steam that has entered and
(b) The amount of heat transfer.

Transcribed Image Text:

0 Steam 0.6 k 0.1 m 800 kPa 0n2 Steam 5 kPa 500°C