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Consider a pipe-pipe configuration consisting of concentric steel tubes with an intervening polyurethane foam insulating material with k=0.075 W/m·K. The inner tube is used to transport warm crude oil though ocean water. The inner steel pipe (k = 35 W/m·K) has an inside diameter of 150mm and wall thickness 10mm while the outer steel pipe has an inside diameter of 250mm and wall same wall thickness as the inside diameter. Determine the heat transfer in the temperature of the oil is 70°C while the ocean water temperature is at 5°C and provides an external convection heat transfer of 500 W/m2·K. The convection coefficient associated with the flowing crude oil is 450 W/m2·K.