Work Problem 19.27 for the case in which the flowing fluid is air at 15 fps.

Data From Problem 19.27

Water, at 60°F, enters a 1-in.-ID tube that is used to cool a nuclear reactor. The water flow rate is 30 gal/min. Determine the total heat transfer and the exiting water temperature for a 15-ft-long tube if the tube surface temperature is a constant value of 300°F. Compare the answer obtained using the Reynolds and Colburn analogies.