Question: A 3 - m - long, 0 . 3 - cm - diameter electrical wire extends across a room at 2 2 C . Heat

A 3-m-long, 0.3-cm-diameter electrical wire extends across a room at 22C. Heat is generated in the wire as a result of resistance heating, and the surface temperature of the wire is measured to be 160C in steady operation. Also, the voltage drop and electric current through the wire are measured to be 85+X1*X2(where X1=8, X2=0) and the current is measured to be 1.5 A, respectively. Disregarding any heat transfer by radiation, determine the convection heat transfer coefficient for heat transfer between the outer surface of the wire and the air in the room.

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