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

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Mechanical Engineering

You decide to design a heating element using a piece of polishedcopper wire, 10mm in diameter with an emissivity of 0.08. It willmaintain a constant surface temperature of 325°C when immersedinwater.

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 waterper unit length ofwire?

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

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