An ideal gas with constant specific heats and cv=0.7 kj/kgk and r=0.3 kj/kgk is contained in a piston-cylinder device and undergoes a power cycle as follows: 1-2 isentropic compression from an initial temperature ti=20°c with a compression ratior=5. 2-3 constant pressure heat addition. 3-1 constant volume heat rejection a. sketch the p-v and t-s diagrams for the cycle b. determine the heat and work interactions for each process, in kj/kg c. determine the cycle thermal efficiency.

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.