A shell-and-tube heat exchanger with 1-shell pass and 14-tube passes is used to heat water in the tubes with geothermal steam condensing at 120°C (h_fg= 2203 kJ/kg) on the shell side. The tubes are thin-walled and have a diameter of 2.4 cm and length of 3.2 m per pass. Water (c_p= 4180 J/kg·K) enters the tubes at 22°C at a rate of 3.9 kg/s. If the temperature difference between the two fluids at the exit is 46°C, determine

(a) The rate of heat transfer,

(b) The rate of condensation of steam,

(c) The overall heat transfer coefficient.

Transcribed Image Text:

Steam 120°C 22°C Water (14 tubes) 3.9 kg/s 120°C