Problem 3. . Water at 77°C is pumped at the rate of 2 gal/s from a reservoir at atmospheric pressure. The vapor pressure of water at 77°C is 6.1 psi. The gauge pressure at the end of the discharge line is 2327 mm Hg. The suction line of the pump is located 48 inches above the level of the reservoir, and the discharge point is 84 inches above the pump. The discharge line is a 2 inch nominal dimeter steel pipe with a schedule number of 80. The pressure drop due to friction in the suction line is 1.2 psi, and that in the discharge line is 9 psi. The mechanical efficiency of the pump is 65%. Calculate the total power input.

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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.