Figure below shows an insulated co-current core-shell heat exchanger with air and water flowing through the inner and outer channels, respectively. The device is used to cool down the air stream. The known properties of each stream are listed on the figure. Air can be modeled as an ideal gas. Effect of potential and kinetic energy are neglected. P = 1.0 bar T = 20C Cooling water 3 P = 1.0 bar T = 280C m-145 kg/h P = 1.3 bar 4 air Ps = 1.0 bar T = 127C T. 527 C+ m4-1000 kg/h Cooling water Pz=1.0 bar 2 T = 50C (a) (15 pts) Find the mass flow rates for each water inlet (streams 1 and 2), in kg/h.