Overall rate of heat conduction for a fin

  • Thread starter theone
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  • #1
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Homework Statement


http://postimg.org/image/4ctgrkoop/
I don't understand the final bit, for the 'steady rate of heat transfer for the entire fin', how they went from Fourier's Law to that final expression.

Homework Equations




The Attempt at a Solution


I think it involves the previous expression but I really don't know
 

Answers and Replies

  • #2
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Do you at least understand the part of the expression involving dT/dx?

Chet
 

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