A crude oil stream available at 209◦C is to be used to cool a heavy gas oil stream from 319^◦C to 269^◦C in a shell-and-tube heat exchanger. The crude oil is on the shell side and the gas oil on the tube side. The flow rates of the streams are 105,700 kg/hr for the gas oil and 367,600 kg/hr for the crude oil. The physical properties vary somewhat with temperature, but you may take the heat capacities of the gas oil and crude oil to be 3.14 and 2.67 J/kg K, respectively. The heat transfer coefficient is 450W/m² K. What heat transfer area will be required? If the tube diameter is to be 15 cm, what size must the exchanger be?