A 0.21cm Diameter Electrical Wire At 32oC Is Covered By 0.05cm Thick Plastic Insulation (k = 0.13 W/mK). The Wire Is Exposed To A Medium At 10oC With A Combined Convection And Radiation Heat Transfer Coefficient Of 14 W/m2K. A) Determine The Heat Transfer Rate Of The Wire. B) Determine If The Plastic Insulation On The Wire Will Increase Or Decrease Heat Transfer From The Wire. C) Determine The Heat Transfer Rate Of The Wire With An Added Thermal Contact Resistance Of 0.000176 M2K/W At The Interface Of The Wire And The Insulation.

A 0.21cm diameter electrical wire at 32oC is covered by 0.05cm thick plastic insulation (k = 0.13 W/mK). The wire is exposed to a medium at 10oC with a combined convection and radiation heat transfer coefficient of 14 w/m2K. a) Determine the heat transfer rate of the wire. b) Determine if the plastic insulation on the wire will increase or decrease heat transfer from the wire. c) Determine the heat transfer rate of the wire with an added thermal contact resistance of 0.000176 m2K/W at the interface of the wire and the insulation.

- November 14, 2022 - Edwin Tunner

A 0.21cm diameter electrical wire at 32^oC is covered by 0.05cm thick plastic insulation (k = 0.13 W/mK). The wire is exposed to a medium at 10^oC with a combined convection and radiation heat transfer coefficient of 14 w/m²K.

a) Determine the heat transfer rate of the wire.

b) Determine if the plastic insulation on the wire will increase or decrease heat transfer from the wire.

c) Determine the heat transfer rate of the wire with an added thermal contact resistance of 0.000176 m²K/W at the interface of the wire and the insulation.

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