Two engineers are having an argument about the efficiency of a tube-side multi pass heat exchanger compared to a similar exchanger with a single tube-side pass. Smith claims that for a given number of tubes and rate of heat transfer, more area is required in a two-pass exchanger than in a one pass, because the effective temperature difference is less. Jones, on the other hand, claims that because the tube-side velocity and hence the heat transfer coefficient are higher, less area is required in a two-pass exchanger. With the conditions given below, which engineer is correct? Which case would you recommend, or what changes in the exchanger would you recommend? Exchanger specifications: 200 tube passes total 1-inch OD copper tubes, 16 BWG Tube-side fluid: water entering at 16°C, leaving at 28°C, at a rate of 225,000 kg/h Shell-side fluid: Mobil therm 600, entering at 50°C, leaving at 33°C shell-side coefficient 1700 W/m2 K