A shell and tube heat exchanger with one shell pass and 20 tube passes uses hot water on the tube side to heat oil on the shell side. The single copper tube has inner and outer diameters of 20 and 24 mm and a length per pass of 3m. The water enters at 87 °C and 0.2 kg/s and leaves at 27 °C. Inlet and outlet temperature of the oil are 7 and 37 °C. What is the average convection coefficient for the tube outer surface?

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Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.