Problem 1 (20 pts) An air-conditioning system uses refrigerant-134a as a working fluid. Air enters the system at 30C and 70 percent relative humidity at a rate of 4 m3/min. The refrigerant enters the cooling section at 700 kPa with a quality of 25 percent and leaves as saturated vapor; it is then further compressed to 1.4 MPa before entering the condenser. The air is cooled to 20C at a pressure of 1 atm. Determine (a, 4) the rate of dehumidification, (b, 4) the rate of heat transfer, (c, 4) the mass flow rate of the refrigerant, (d, 4) the power input to compressor of the refrigerator, (e, 2) COP of the refrigerator and (f, 2) the rate of the heat rejection of the refrigerator to the environment