A steam turbine operates with 2 MPa and 400°C steam at its inlet and saturated vapor at 40°C at its exit. The mass flow rate of the steam is 25 kg/s, and the turbine produces 12 MW of power. Determine the rate at which heat is lost through the casing of this turbine. (Answer: 4872.5 kW)

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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.