Question: Reconsider Prob. 1647. Using an appropriate software, plot the convection heat transfer coefficient as a function of the wire surface temperature in the range of

Reconsider Prob. 16€“47. Using an appropriate software, plot the convection heat transfer coefficient as a function of the wire surface temperature in the range of 100°C to 300°C. Discuss the results.

Reconsider Prob. 16€“47.

A 2.1-m-long, 0.2-cm-diameter electrical wire extends across a room that is maintained at 20°C. Heat is generated in the wire as a result of resistance heating, and the surface temperature of the wire is measured to be 180°C in steady operation. Also, the voltage drop and electric current through the wire are measured to be 110 V and 3 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.

Room 20°C 180°C Electric resistance heater

Room 20C 180C Electric resistance heater

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