A double-pipe heat exchanger with the dimensions shown in Fig. P2-9 is used to heat water (Tin = 50°F). Steam at 250’F is condensing on the outside with an ho = 2,500 Btu/ft2-hr-‘F. Sufficient steam is available. If the water flow rate is 3 ft/s, find the outlet temperature of the water. Neglect the thermal resistance of the pipe.