A wind generator with a 9 m diameter blade span has a cut-in wind speed of 5 m/s. The cut-out wind speed is 2.5 m/s. Determine a) the power generated by the wind turbines? b) the horizontal force exerted by the wind on the supporting post of the wind turbine? The density of air is taken to be 1.225 kg/m3

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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.