= Consider a long electrical resistance wire of radius r 0.35 cm has a thermal conductivity...

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= Consider a long electrical resistance wire of radius r₁ 0.35 cm has a thermal conductivity kwire = 28 W/m.K. Heat is generated uniformly in the wire as a result of resistance heating at a constant rate of 0.55 W/cm³. The wire is covered with plastic insulation with a thickness of 0.30 cm and thermal conductivity of kins = 0.30 W/m.K. The outer surface of the insulation is subjected to free convection in air at 18°C and a convection heat transfer coefficient of 5 W/m²K. Find the followings: a) the temperature profile for the wire b) the temperature profile for the plastic insulation. c) temperature at the center of the wire Wire Interface, T₁ Insulation h. To = Consider a long electrical resistance wire of radius r₁ 0.35 cm has a thermal conductivity kwire = 28 W/m.K. Heat is generated uniformly in the wire as a result of resistance heating at a constant rate of 0.55 W/cm³. The wire is covered with plastic insulation with a thickness of 0.30 cm and thermal conductivity of kins = 0.30 W/m.K. The outer surface of the insulation is subjected to free convection in air at 18°C and a convection heat transfer coefficient of 5 W/m²K. Find the followings: a) the temperature profile for the wire b) the temperature profile for the plastic insulation. c) temperature at the center of the wire Wire Interface, T₁ Insulation h. To

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SOLUTION To solve this problem well use the heat transfer equations for a rod undergoing resistance heating and the heat transfer equations for a flat plate undergoing free convection First lets defin... View the full answer