You decide to design a heating element using a piece of polished copper wire, 10mm in...

You decide to design a heating element using a piece of polished copper wire, 10mm in diameter with an emissivity of 0.08. It will maintain a constant surface temperature of 325°C when immersed inwater.

a. How did we know to apply film boiling to this scenario? (Hint–look at the boiling curve.)

b. What is the rate of heat transfer from the wire to the water per unit length ofwire?

Hint: The corrected total heat transfer due to a vapor film impeding radiation is: q(total) = q(film) + 3/4q(radiation)

Expert Solution

samet mamat answered 3 years ago

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