Water flowing at a rate of 10 kg/s through 50 double-pass tubes in a shell and tube heat exchanger heats air that flows through the shell side. The length of the brass tubes is 6.7 m and they have an outside diameter of 2.6 cm and an inside diameter of 2.3 cm. The heat transfer coefficient of the water and air are 470 W/(m2 K) and 210 W/(m2 K), respectively. The air enters the shell at a temperature of 15?C and a flow rate of 1.6 kg/s. The temperature of the water as it enters the tubes is 75?C. Calculate(a) The heat exchanger effectiveness,(b) The heat transfer rate to the air, and(c) The outlet temperature of the air and water.GIVENShell-and-tube heat exchanger - one shell, two tube passesWater in brass tubes, air in shellWater flow rate (mw) = 10 kg/sNumber of double passes (N) = 50Tube length (L) = 6.7 mTube diametersDo = 2.6 cm = 0.026 mDi = 2.3 cm = 0.023 mHeat transfer coefficientWater (hi ) = 470 W/(m2 K)Air (ho ) = 210 W/(m2 K)Air inlet temperature (Ta,in) = 15?CAir flow rate (ma) = 1.6 kg/sWater inlet temperature (Tw,in) = 75?CASSUMPTIONSTube length includes bothpasses

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Alr,m,- 1.6 kg/s Tain- 15°C Twin = 75°C mw= 10 kg/s Water