An air-conditioner with refrigerant- 134a as the working fluid is used to keep a room at 25C by rejecting the waste heat to the outdoor air at 35C. The room gains heat through the walls and the windows at a rate of 200kJ/min while the heat generated by the computer, TV, and lights amounts to 800W. The refrigerant enters the compressor at 425kPa as a saturated vapor at a rate of 80L/min and leaves at 1000kPa and 75 C. Determine (a) the actual COP, (b) the maximum COP, and (c) the minimum volume flow rate of the refrigerant at the compressor inlet for the same compressor inlet and exit conditions