Consider a steel 9-in diameter, 30-mile long cylindrical pipeline with -in wall thickness, shown cross- sectional area below, exposed to an external crossflow seawater stream at 1 m/s speed with stream temperature of 4C. The pipeline carries oil [SG=0.8, k=0.16 W/(m.K),=3.7 cP] that enters the pipeline at 250 F with a volumetric flow rate of 1000 bbl/day. Determine the internal and external heat transfer coefficients of the pipeline. Show the temperature distribution of the oil along the pipeline. Detail the used analysis in calculating the energy balance within and across each longitudinal section the whole length is divided by.