2 shell, 4 tube pass heat exchanger heats a light oil from 20 c to 50 c using hot water that enters the thin walled, 2 cm diameter tubees at 80 c leaving at 40 there is a total length of 60 m of tubes in the hX. the oil side heat transfer coefficient Ho is 25 w/m^2-k, while the water side heat transfer coefficient hi is 160. What is the log mean temperature difference, T_LM, for the heat exchanger? determine U the overall heat transfer cofficient of the heat exchanger ignoring thermal resistance of the pipe. determine q, the rate of the heat transfer for the heat exchanger