Hot oil (@ 2200 j/kg. "c) is to be cooled by water (c=4180 j/kg: °c) in a 2-shell-pass and 12- tube-pass heat exchanger. the tubes are thin-walled and are made of copper with a diameter of 1.8 cm. the length of each tube pass in the heat exchanger is 3 m, and the overall heat transfer coefficient is 340 w/ m °c. water flows through the tubes at a total rate of 0.1 kg/s, and the on through the shell at a rate of 0.2 kg/s. the water and the oil enter at temperatures 18°c and 160°c, respectively. determine the rate of heat transfer in the heat exchanger and the outlet temperatures of the water and the oil. ( 36.2 kw, 104.6°c, 77.7°c)