An insulated tank containing 0.5 m3 of R-134a at 500 kPa and 90% quality is connected to an initially evacuated insulated piston-cylinder device as shown in the accompanying figure. The force balance on the piston is such that a pressure of 200 kPa is required to lift the piston. Now the valve is opened slightly and part of the refrigerant flows to the cylinder, pushing the piston up. The process ends when the pressure in the tank drops to 120 kPa. Assuming that the refrigerant in the tank undergoes an isentropic (reversible and adiabatic) process, determine the final quality in the.
(a) Tank.
(b) Cylinder. Also calculate.
(c) The boundary work.
(d) The entropy generated during the process.