Heating air by a steam heater. a total of 1361 kg/h Of air at 1 atm abs pressure and 20C is to be heated by passing over a bank of tubes in which steam at 100C is condensing.
the tube are 12.7mm OD, 0.7m long, and arranged inline in a square pattern with Sp=Sn=19mm.
The bank of tubes contains 6 transverse rows in the direction of flow and 19 rows normal to flow. Assume that the tube surface temperature is constant at 95C. Calculate the outlet air temteration.