One kg water at velocity 12.5 m/s and 30oC enters a 2.54 cm diameter horizontal pipe where  there is no heat or work exchange with the surroundings. The water suddenly flows through a  larger pipe with a diameter of 3.85cm. Calculate the following: a. Velocity of the water leaving the pipe in m/s b. The change in temperature of the water. Cpwater=4.18 ??

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.