Chapter 11, Problem 11.10P

Water at a rate of 45,500kg/h is heated from 80 to150°C in a heat exchanger having two shell passes andeight tube passes with a total surface area of $952{\text{ m}}^2$ .Hot exhaust gases having approximately the samethermophysical properties as air enter at 350°C andexit at 175°C. Determine the overall heat transfer coefficient.