A shell and tube heat exchanger is to be constructed. Hot syngas* is flowing at a flow rate of 500 kg/h in the heat exchanger, and it is cooled from 400C to 240C. The heat transfer oil* enters at 180 C and leaves 220C. a) Calculate the thermal oil flow rate and heat duty of the exchanger. b) Calculate the mean temperature difference and design the heat exchanger c) Calculate the area required and the overall heat-transfer coefficient. d) Check pressure drop (