Water is heated by air in a heat exchanger. The water enters at 150 C and 0.2 MPa and leaves at 300 C and 0.2 MPa. The mass flow rate of the water is 1 kg/s. The air enters at 350 C and 0.1 MPa at a rate of 2 kg/s. Determine the heat transfer rate between the two fluids (kW) and the exit temperature (C) of the air.