A liquid A is heated from 20°C to 60°C flowing on the tube side of a shell and tube heat exchanger at a flow rate of 44 kg/s. Another liquid B flowing on the shell side is cooled from 100°C to a to-be-determined temperature. The heat exchanger has one-shell pass and four-tube passes.

The shell inner diameter is 30 in. and contains 1,024 copper tubes ¾-in.

diameter 14 BWG, each 3.5 m long. The shell side heat transfer coefficient is 900 W/m² K. Using the data below, calculate the outlet temperature of the shell-side liquid and its flow rate in kg/h.

Data:

Heat capacity of liquid A = 1,990 J/kg K Heat capacity of liquid B = 1,700 J/kg K Viscosity of liquid A = 2.9 mPa s Thermal conductivity of liquid A = 0.137 W/m K Density of liquid A = 830 kg/m3 The above properties can be assumed to remain constant with temperature.