Carbon dioxide gas at 1 atmosphere pressure it to be heated from 25?C to 75?C by pumping it through a tube bank at a velocity of 4 m/s. The tubes are heated by steam condensing within them at 200?C. The tubes are 10 mm outside diameter, are in an in??line arrangement, have a longitudinal spacing of 15 mm and a transverse spacing of 17 mm. If 13 tube rows are required, what is the average heat transfer coefficient and what is the pressure drop of the carbon dioxide?GIVENIn-line tube bank: condensing steam inside, CO2 outsideCO2 temperaturesIn: (Tg,in) = 25?COut: (Tg,out) = 75?CCO2 velocity (Us) = 4 m/sSteam temperature (Ts) = 200?CTube outside diameter (D) = 10 mm = 0.01 mLongitudinal spacing (SL) = 15 mm = 0.015 mTransverse spacing (ST) = 17 mm = 0.017 mNumber of tubes (N) = 13ASSUMPTIONSSteady stateThe thermal resistances of the condensing steam and the tube walls are negligible (tube wall temperature =Ts)

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S = 15 mm- CO2 Toin = 25°C U,= 4 m/s Sr- 17 mm Tgou = 75°C D= 10 mm