A certain refrigerant vapor enters a steady-flow, constant-pressure condenser at 150 kPa, 70◦C, at a rate of 1.5 kg/s, and it exits as saturated liquid. Calculate the rate of heat transfer from the condenser. It may be assumed that the vapor is an ideal gas and also that at saturation, v_f v_g. The following is known: ln P_g = 8.15 − 1000/T C_p0 = 0.7 kJ/kg K with pressure in kPa and temperature in K. The molecular mass is 100.