H2O as saturated liquid/vapor mixture enters a counterflow heat exchanger operating at steady state at 0.7 bar with a specific enthalpy of 2431.6 kJ/kg and exits at the same pressure as saturated liquid. The steam mass flow rate is 1.5 kg/min. A separate stream of air with a mass flow rate of 100 kg/min enters at 30 degree C and exits at 60 degree C. The ideal gas model, with a constant cp = 1.005 kJ/kg*K can be assumed for the air. Kinetic and potential energy effects are negligible. Determine a) the quality (x) of the entering H 2O and b) the rate of heat transfer (Q) between the heat exchanger and its surroundings, in kW.