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a .25 mm diameter wire .2 m long is to be held at 1035 deg...

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Mechanical Engineering

a .25 mm diameter wire .2 m long is to be held at 1035 deg C.The wires surface is black. how much electrical power is requiredto maintain it's temp? The surrounding air and room are both at 20deg C. The room is also assumed to be black . Find : Raleighnumber, nusselt number, HTC and power required to maintaintemperature.

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