R-134a is contained in a vertical cylinder fitted with a frictionless piston and a set of stops and the volume is 0.05m^3 when the piston is against the upper stops. The pressure of R-134a must be 200kPa to support the piston when it is not pushed against the stops. Initially the R-134a is at 200kPa, 40% quality and occupies a volume of 0.03m^3. The R-134a is then heated to a final temperature of 30 degrees centigrade.
Find the work done by the r-134a during this process.
Find the heat transfer required for this process.