Q 10 Water at the rate of 3 8 kg s is heated from 38 to 55 C

Last updated: 7/2/2023

Q 10 Water at the rate of 3 8 kg s is heated from 38 to 55 C in a shell and tube heat exchanger On the shell side one pass is used with water as the heating fluid 1 9 kg s entering the exchanger at 93 C The overall heat transfer coefficient is 1419 W m C and the average water velocity in the 1 9 cm diameter tubes is 0 366 m s Because of space limitations the tube length must not be longer than 2 5 m Calculate the number of tube passes the number of tubes per pass and the length of the tubes consistent with this restriction Assume LMTD correction factor F 0 9 for two passes