Engine oils enters a 14 mm internal diameter thin aluminum tube of a heat exchanger at 20°C at a rate of 0.05 m³/min and is heated to 60°C. If the tube length is 58 cm, calculate the required pumping power, in W. Properties of engine oil: p=876 kg/m³, C,=1964 J/(kg®C), k=0.1444 W/(m°C), µ=0.2177 kg/(ms), Pr=2792

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Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.