Water at the rate of 30,000 lbm/h [3.783 kg/s] is heated from 100 to 130◦F [37.78...

Water at the rate of 30,000 lbm/h [3.783 kg/s] is heated from 100 to 130◦F [37.78 to 54.44◦C] in a shell-and-tube heat exchanger. On the shell side one pass is used with water as the heating fluid, 15,000 lbm/h [1.892 kg/s], entering the exchanger at 200◦F [93.33◦C]. The overall heat-transfer coefficient is 250 Btu/h · ft2 · ◦F [1419 W/m2 · ◦C], and the average water velocity in the 34 -in [1.905-cm] diameter tubes is 1.2 ft/s [0.366 m/s]. Because of space limitations, the tube length must not be longer than 8 ft [2.438 m]. Calculate the number of tube passes, the number of tubes per pass, and the length of the tubes, consistent with this restriction.

Expert Solution

Amanda K answered 5 hours ago

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